1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * thinkpad_acpi.c - ThinkPad ACPI Extras 4 * 5 * Copyright (C) 2004-2005 Borislav Deianov <borislav@users.sf.net> 6 * Copyright (C) 2006-2009 Henrique de Moraes Holschuh <hmh@hmh.eng.br> 7 */ 8 9 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 10 11 #define TPACPI_VERSION "0.26" 12 #define TPACPI_SYSFS_VERSION 0x030000 13 14 /* 15 * Changelog: 16 * 2007-10-20 changelog trimmed down 17 * 18 * 2007-03-27 0.14 renamed to thinkpad_acpi and moved to 19 * drivers/misc. 20 * 21 * 2006-11-22 0.13 new maintainer 22 * changelog now lives in git commit history, and will 23 * not be updated further in-file. 24 * 25 * 2005-03-17 0.11 support for 600e, 770x 26 * thanks to Jamie Lentin <lentinj@dial.pipex.com> 27 * 28 * 2005-01-16 0.9 use MODULE_VERSION 29 * thanks to Henrik Brix Andersen <brix@gentoo.org> 30 * fix parameter passing on module loading 31 * thanks to Rusty Russell <rusty@rustcorp.com.au> 32 * thanks to Jim Radford <radford@blackbean.org> 33 * 2004-11-08 0.8 fix init error case, don't return from a macro 34 * thanks to Chris Wright <chrisw@osdl.org> 35 */ 36 37 #include <linux/acpi.h> 38 #include <linux/backlight.h> 39 #include <linux/bitops.h> 40 #include <linux/delay.h> 41 #include <linux/dmi.h> 42 #include <linux/freezer.h> 43 #include <linux/hwmon.h> 44 #include <linux/hwmon-sysfs.h> 45 #include <linux/init.h> 46 #include <linux/input.h> 47 #include <linux/input/sparse-keymap.h> 48 #include <linux/jiffies.h> 49 #include <linux/kernel.h> 50 #include <linux/kthread.h> 51 #include <linux/leds.h> 52 #include <linux/list.h> 53 #include <linux/lockdep.h> 54 #include <linux/module.h> 55 #include <linux/mutex.h> 56 #include <linux/nvram.h> 57 #include <linux/pci.h> 58 #include <linux/platform_device.h> 59 #include <linux/platform_profile.h> 60 #include <linux/power_supply.h> 61 #include <linux/proc_fs.h> 62 #include <linux/rfkill.h> 63 #include <linux/sched.h> 64 #include <linux/sched/signal.h> 65 #include <linux/seq_file.h> 66 #include <linux/slab.h> 67 #include <linux/string.h> 68 #include <linux/string_helpers.h> 69 #include <linux/sysfs.h> 70 #include <linux/types.h> 71 #include <linux/uaccess.h> 72 #include <linux/units.h> 73 #include <linux/workqueue.h> 74 75 #include <acpi/battery.h> 76 #include <acpi/video.h> 77 78 #include <drm/drm_privacy_screen_driver.h> 79 80 #include <sound/control.h> 81 #include <sound/core.h> 82 #include <sound/initval.h> 83 84 #include "dual_accel_detect.h" 85 86 /* ThinkPad CMOS commands */ 87 #define TP_CMOS_VOLUME_DOWN 0 88 #define TP_CMOS_VOLUME_UP 1 89 #define TP_CMOS_VOLUME_MUTE 2 90 #define TP_CMOS_BRIGHTNESS_UP 4 91 #define TP_CMOS_BRIGHTNESS_DOWN 5 92 #define TP_CMOS_THINKLIGHT_ON 12 93 #define TP_CMOS_THINKLIGHT_OFF 13 94 95 /* NVRAM Addresses */ 96 enum tp_nvram_addr { 97 TP_NVRAM_ADDR_HK2 = 0x57, 98 TP_NVRAM_ADDR_THINKLIGHT = 0x58, 99 TP_NVRAM_ADDR_VIDEO = 0x59, 100 TP_NVRAM_ADDR_BRIGHTNESS = 0x5e, 101 TP_NVRAM_ADDR_MIXER = 0x60, 102 }; 103 104 /* NVRAM bit masks */ 105 enum { 106 TP_NVRAM_MASK_HKT_THINKPAD = 0x08, 107 TP_NVRAM_MASK_HKT_ZOOM = 0x20, 108 TP_NVRAM_MASK_HKT_DISPLAY = 0x40, 109 TP_NVRAM_MASK_HKT_HIBERNATE = 0x80, 110 TP_NVRAM_MASK_THINKLIGHT = 0x10, 111 TP_NVRAM_MASK_HKT_DISPEXPND = 0x30, 112 TP_NVRAM_MASK_HKT_BRIGHTNESS = 0x20, 113 TP_NVRAM_MASK_LEVEL_BRIGHTNESS = 0x0f, 114 TP_NVRAM_POS_LEVEL_BRIGHTNESS = 0, 115 TP_NVRAM_MASK_MUTE = 0x40, 116 TP_NVRAM_MASK_HKT_VOLUME = 0x80, 117 TP_NVRAM_MASK_LEVEL_VOLUME = 0x0f, 118 TP_NVRAM_POS_LEVEL_VOLUME = 0, 119 }; 120 121 /* Misc NVRAM-related */ 122 enum { 123 TP_NVRAM_LEVEL_VOLUME_MAX = 14, 124 }; 125 126 /* ACPI HIDs */ 127 #define TPACPI_ACPI_IBM_HKEY_HID "IBM0068" 128 #define TPACPI_ACPI_LENOVO_HKEY_HID "LEN0068" 129 #define TPACPI_ACPI_LENOVO_HKEY_V2_HID "LEN0268" 130 #define TPACPI_ACPI_EC_HID "PNP0C09" 131 132 /* Input IDs */ 133 #define TPACPI_HKEY_INPUT_PRODUCT 0x5054 /* "TP" */ 134 #define TPACPI_HKEY_INPUT_VERSION 0x4101 135 136 /* ACPI \WGSV commands */ 137 enum { 138 TP_ACPI_WGSV_GET_STATE = 0x01, /* Get state information */ 139 TP_ACPI_WGSV_PWR_ON_ON_RESUME = 0x02, /* Resume WWAN powered on */ 140 TP_ACPI_WGSV_PWR_OFF_ON_RESUME = 0x03, /* Resume WWAN powered off */ 141 TP_ACPI_WGSV_SAVE_STATE = 0x04, /* Save state for S4/S5 */ 142 }; 143 144 /* TP_ACPI_WGSV_GET_STATE bits */ 145 enum { 146 TP_ACPI_WGSV_STATE_WWANEXIST = 0x0001, /* WWAN hw available */ 147 TP_ACPI_WGSV_STATE_WWANPWR = 0x0002, /* WWAN radio enabled */ 148 TP_ACPI_WGSV_STATE_WWANPWRRES = 0x0004, /* WWAN state at resume */ 149 TP_ACPI_WGSV_STATE_WWANBIOSOFF = 0x0008, /* WWAN disabled in BIOS */ 150 TP_ACPI_WGSV_STATE_BLTHEXIST = 0x0001, /* BLTH hw available */ 151 TP_ACPI_WGSV_STATE_BLTHPWR = 0x0002, /* BLTH radio enabled */ 152 TP_ACPI_WGSV_STATE_BLTHPWRRES = 0x0004, /* BLTH state at resume */ 153 TP_ACPI_WGSV_STATE_BLTHBIOSOFF = 0x0008, /* BLTH disabled in BIOS */ 154 TP_ACPI_WGSV_STATE_UWBEXIST = 0x0010, /* UWB hw available */ 155 TP_ACPI_WGSV_STATE_UWBPWR = 0x0020, /* UWB radio enabled */ 156 }; 157 158 /* HKEY events */ 159 enum tpacpi_hkey_event_t { 160 /* Original hotkeys */ 161 TP_HKEY_EV_ORIG_KEY_START = 0x1001, /* First hotkey (FN+F1) */ 162 TP_HKEY_EV_BRGHT_UP = 0x1010, /* Brightness up */ 163 TP_HKEY_EV_BRGHT_DOWN = 0x1011, /* Brightness down */ 164 TP_HKEY_EV_KBD_LIGHT = 0x1012, /* Thinklight/kbd backlight */ 165 TP_HKEY_EV_VOL_UP = 0x1015, /* Volume up or unmute */ 166 TP_HKEY_EV_VOL_DOWN = 0x1016, /* Volume down or unmute */ 167 TP_HKEY_EV_VOL_MUTE = 0x1017, /* Mixer output mute */ 168 TP_HKEY_EV_ORIG_KEY_END = 0x1020, /* Last original hotkey code */ 169 170 /* Adaptive keyboard (2014 X1 Carbon) */ 171 TP_HKEY_EV_DFR_CHANGE_ROW = 0x1101, /* Change adaptive kbd Fn row mode */ 172 TP_HKEY_EV_DFR_S_QUICKVIEW_ROW = 0x1102, /* Set adap. kbd Fn row to function mode */ 173 TP_HKEY_EV_ADAPTIVE_KEY_START = 0x1103, /* First hotkey code on adaptive kbd */ 174 TP_HKEY_EV_ADAPTIVE_KEY_END = 0x1116, /* Last hotkey code on adaptive kbd */ 175 176 /* Extended hotkey events in 2017+ models */ 177 TP_HKEY_EV_EXTENDED_KEY_START = 0x1300, /* First extended hotkey code */ 178 TP_HKEY_EV_PRIVACYGUARD_TOGGLE = 0x130f, /* Toggle priv.guard on/off */ 179 TP_HKEY_EV_EXTENDED_KEY_END = 0x1319, /* Last extended hotkey code using 180 * hkey -> scancode translation for 181 * compat. Later codes are entered 182 * directly in the sparse-keymap. 183 */ 184 TP_HKEY_EV_AMT_TOGGLE = 0x131a, /* Toggle AMT on/off */ 185 TP_HKEY_EV_CAMERASHUTTER_TOGGLE = 0x131b, /* Toggle Camera Shutter */ 186 TP_HKEY_EV_DOUBLETAP_TOGGLE = 0x131c, /* Toggle trackpoint doubletap on/off */ 187 TP_HKEY_EV_PROFILE_TOGGLE = 0x131f, /* Toggle platform profile in 2024 systems */ 188 TP_HKEY_EV_PROFILE_TOGGLE2 = 0x1401, /* Toggle platform profile in 2025 + systems */ 189 190 /* Reasons for waking up from S3/S4 */ 191 TP_HKEY_EV_WKUP_S3_UNDOCK = 0x2304, /* undock requested, S3 */ 192 TP_HKEY_EV_WKUP_S4_UNDOCK = 0x2404, /* undock requested, S4 */ 193 TP_HKEY_EV_WKUP_S3_BAYEJ = 0x2305, /* bay ejection req, S3 */ 194 TP_HKEY_EV_WKUP_S4_BAYEJ = 0x2405, /* bay ejection req, S4 */ 195 TP_HKEY_EV_WKUP_S3_BATLOW = 0x2313, /* battery empty, S3 */ 196 TP_HKEY_EV_WKUP_S4_BATLOW = 0x2413, /* battery empty, S4 */ 197 198 /* Auto-sleep after eject request */ 199 TP_HKEY_EV_BAYEJ_ACK = 0x3003, /* bay ejection complete */ 200 TP_HKEY_EV_UNDOCK_ACK = 0x4003, /* undock complete */ 201 202 /* Misc bay events */ 203 TP_HKEY_EV_OPTDRV_EJ = 0x3006, /* opt. drive tray ejected */ 204 TP_HKEY_EV_HOTPLUG_DOCK = 0x4010, /* docked into hotplug dock 205 or port replicator */ 206 TP_HKEY_EV_HOTPLUG_UNDOCK = 0x4011, /* undocked from hotplug 207 dock or port replicator */ 208 /* 209 * Thinkpad X1 Tablet series devices emit 0x4012 and 0x4013 210 * when keyboard cover is attached, detached or folded onto the back 211 */ 212 TP_HKEY_EV_KBD_COVER_ATTACH = 0x4012, /* keyboard cover attached */ 213 TP_HKEY_EV_KBD_COVER_DETACH = 0x4013, /* keyboard cover detached or folded back */ 214 215 /* User-interface events */ 216 TP_HKEY_EV_LID_CLOSE = 0x5001, /* laptop lid closed */ 217 TP_HKEY_EV_LID_OPEN = 0x5002, /* laptop lid opened */ 218 TP_HKEY_EV_TABLET_TABLET = 0x5009, /* tablet swivel up */ 219 TP_HKEY_EV_TABLET_NOTEBOOK = 0x500a, /* tablet swivel down */ 220 TP_HKEY_EV_TABLET_CHANGED = 0x60c0, /* X1 Yoga (2016): 221 * enter/leave tablet mode 222 */ 223 TP_HKEY_EV_PEN_INSERTED = 0x500b, /* tablet pen inserted */ 224 TP_HKEY_EV_PEN_REMOVED = 0x500c, /* tablet pen removed */ 225 TP_HKEY_EV_BRGHT_CHANGED = 0x5010, /* backlight control event */ 226 227 /* Key-related user-interface events */ 228 TP_HKEY_EV_KEY_NUMLOCK = 0x6000, /* NumLock key pressed */ 229 TP_HKEY_EV_KEY_FN = 0x6005, /* Fn key pressed? E420 */ 230 TP_HKEY_EV_KEY_FN_ESC = 0x6060, /* Fn+Esc key pressed X240 */ 231 232 /* Thermal events */ 233 TP_HKEY_EV_ALARM_BAT_HOT = 0x6011, /* battery too hot */ 234 TP_HKEY_EV_ALARM_BAT_XHOT = 0x6012, /* battery critically hot */ 235 TP_HKEY_EV_ALARM_BAT_LIM_CHANGE = 0x6013, /* battery charge limit changed*/ 236 TP_HKEY_EV_ALARM_SENSOR_HOT = 0x6021, /* sensor too hot */ 237 TP_HKEY_EV_ALARM_SENSOR_XHOT = 0x6022, /* sensor critically hot */ 238 TP_HKEY_EV_THM_TABLE_CHANGED = 0x6030, /* windows; thermal table changed */ 239 TP_HKEY_EV_THM_CSM_COMPLETED = 0x6032, /* windows; thermal control set 240 * command completed. Related to 241 * AML DYTC */ 242 TP_HKEY_EV_THM_TRANSFM_CHANGED = 0x60F0, /* windows; thermal transformation 243 * changed. Related to AML GMTS */ 244 245 /* AC-related events */ 246 TP_HKEY_EV_AC_CHANGED = 0x6040, /* AC status changed */ 247 248 /* Further user-interface events */ 249 TP_HKEY_EV_PALM_DETECTED = 0x60b0, /* palm hoveres keyboard */ 250 TP_HKEY_EV_PALM_UNDETECTED = 0x60b1, /* palm removed */ 251 252 /* Misc */ 253 TP_HKEY_EV_RFKILL_CHANGED = 0x7000, /* rfkill switch changed */ 254 255 /* Misc2 */ 256 TP_HKEY_EV_TRACK_DOUBLETAP = 0x8036, /* trackpoint doubletap */ 257 }; 258 259 /**************************************************************************** 260 * Main driver 261 */ 262 263 #define TPACPI_NAME "thinkpad" 264 #define TPACPI_DESC "ThinkPad ACPI Extras" 265 #define TPACPI_FILE TPACPI_NAME "_acpi" 266 #define TPACPI_URL "http://ibm-acpi.sf.net/" 267 #define TPACPI_MAIL "ibm-acpi-devel@lists.sourceforge.net" 268 269 #define TPACPI_PROC_DIR "ibm" 270 #define TPACPI_ACPI_EVENT_PREFIX "ibm" 271 #define TPACPI_DRVR_NAME TPACPI_FILE 272 #define TPACPI_DRVR_SHORTNAME "tpacpi" 273 #define TPACPI_HWMON_DRVR_NAME TPACPI_NAME "_hwmon" 274 275 #define TPACPI_NVRAM_KTHREAD_NAME "ktpacpi_nvramd" 276 #define TPACPI_WORKQUEUE_NAME "ktpacpid" 277 278 #define TPACPI_MAX_ACPI_ARGS 3 279 280 /* Debugging printk groups */ 281 #define TPACPI_DBG_ALL 0xffff 282 #define TPACPI_DBG_DISCLOSETASK 0x8000 283 #define TPACPI_DBG_INIT 0x0001 284 #define TPACPI_DBG_EXIT 0x0002 285 #define TPACPI_DBG_RFKILL 0x0004 286 #define TPACPI_DBG_HKEY 0x0008 287 #define TPACPI_DBG_FAN 0x0010 288 #define TPACPI_DBG_BRGHT 0x0020 289 #define TPACPI_DBG_MIXER 0x0040 290 291 #define FAN_NOT_PRESENT 65535 292 293 /**************************************************************************** 294 * Driver-wide structs and misc. variables 295 */ 296 297 struct ibm_struct; 298 299 struct tp_acpi_drv_struct { 300 const struct acpi_device_id *hid; 301 struct acpi_driver *driver; 302 303 void (*notify) (struct ibm_struct *, u32); 304 acpi_handle *handle; 305 u32 type; 306 struct acpi_device *device; 307 }; 308 309 struct ibm_struct { 310 char *name; 311 312 int (*read) (struct seq_file *); 313 int (*write) (char *); 314 void (*exit) (void); 315 void (*resume) (void); 316 void (*suspend) (void); 317 void (*shutdown) (void); 318 319 struct list_head all_drivers; 320 321 struct tp_acpi_drv_struct *acpi; 322 323 struct { 324 u8 acpi_driver_registered:1; 325 u8 acpi_notify_installed:1; 326 u8 proc_created:1; 327 u8 init_called:1; 328 u8 experimental:1; 329 } flags; 330 }; 331 332 struct ibm_init_struct { 333 char param[32]; 334 335 int (*init) (struct ibm_init_struct *); 336 umode_t base_procfs_mode; 337 struct ibm_struct *data; 338 }; 339 340 /* DMI Quirks */ 341 struct quirk_entry { 342 bool btusb_bug; 343 }; 344 345 static struct quirk_entry quirk_btusb_bug = { 346 .btusb_bug = true, 347 }; 348 349 static struct { 350 u32 bluetooth:1; 351 u32 hotkey:1; 352 u32 hotkey_mask:1; 353 u32 hotkey_wlsw:1; 354 enum { 355 TP_HOTKEY_TABLET_NONE = 0, 356 TP_HOTKEY_TABLET_USES_MHKG, 357 TP_HOTKEY_TABLET_USES_GMMS, 358 } hotkey_tablet; 359 u32 kbdlight:1; 360 u32 light:1; 361 u32 light_status:1; 362 u32 bright_acpimode:1; 363 u32 bright_unkfw:1; 364 u32 wan:1; 365 u32 uwb:1; 366 u32 fan_ctrl_status_undef:1; 367 u32 second_fan:1; 368 u32 second_fan_ctl:1; 369 u32 beep_needs_two_args:1; 370 u32 mixer_no_level_control:1; 371 u32 battery_force_primary:1; 372 u32 platform_drv_registered:1; 373 u32 hotkey_poll_active:1; 374 u32 has_adaptive_kbd:1; 375 u32 kbd_lang:1; 376 u32 trackpoint_doubletap:1; 377 struct quirk_entry *quirks; 378 } tp_features; 379 380 static struct { 381 u16 hotkey_mask_ff:1; 382 u16 volume_ctrl_forbidden:1; 383 } tp_warned; 384 385 struct thinkpad_id_data { 386 unsigned int vendor; /* ThinkPad vendor: 387 * PCI_VENDOR_ID_IBM/PCI_VENDOR_ID_LENOVO */ 388 389 char *bios_version_str; /* Something like 1ZET51WW (1.03z) */ 390 char *ec_version_str; /* Something like 1ZHT51WW-1.04a */ 391 392 u32 bios_model; /* 1Y = 0x3159, 0 = unknown */ 393 u32 ec_model; 394 u16 bios_release; /* 1ZETK1WW = 0x4b31, 0 = unknown */ 395 u16 ec_release; 396 397 char *model_str; /* ThinkPad T43 */ 398 char *nummodel_str; /* 9384A9C for a 9384-A9C model */ 399 }; 400 static struct thinkpad_id_data thinkpad_id; 401 402 static enum { 403 TPACPI_LIFE_INIT = 0, 404 TPACPI_LIFE_RUNNING, 405 TPACPI_LIFE_EXITING, 406 } tpacpi_lifecycle; 407 408 static int experimental; 409 static u32 dbg_level; 410 411 static struct workqueue_struct *tpacpi_wq; 412 413 enum led_status_t { 414 TPACPI_LED_OFF = 0, 415 TPACPI_LED_ON, 416 TPACPI_LED_BLINK, 417 }; 418 419 /* tpacpi LED class */ 420 struct tpacpi_led_classdev { 421 struct led_classdev led_classdev; 422 int led; 423 }; 424 425 /* brightness level capabilities */ 426 static unsigned int bright_maxlvl; /* 0 = unknown */ 427 428 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 429 static int dbg_wlswemul; 430 static bool tpacpi_wlsw_emulstate; 431 static int dbg_bluetoothemul; 432 static bool tpacpi_bluetooth_emulstate; 433 static int dbg_wwanemul; 434 static bool tpacpi_wwan_emulstate; 435 static int dbg_uwbemul; 436 static bool tpacpi_uwb_emulstate; 437 #endif 438 439 440 /************************************************************************* 441 * Debugging helpers 442 */ 443 444 #define dbg_printk(a_dbg_level, format, arg...) \ 445 do { \ 446 if (dbg_level & (a_dbg_level)) \ 447 printk(KERN_DEBUG pr_fmt("%s: " format), \ 448 __func__, ##arg); \ 449 } while (0) 450 451 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 452 #define vdbg_printk dbg_printk 453 static const char *str_supported(int is_supported); 454 #else 455 static inline const char *str_supported(int is_supported) { return ""; } 456 #define vdbg_printk(a_dbg_level, format, arg...) \ 457 do { if (0) no_printk(format, ##arg); } while (0) 458 #endif 459 460 static void tpacpi_log_usertask(const char * const what) 461 { 462 printk(KERN_DEBUG pr_fmt("%s: access by process with PID %d\n"), 463 what, task_tgid_vnr(current)); 464 } 465 466 #define tpacpi_disclose_usertask(what, format, arg...) \ 467 do { \ 468 if (unlikely((dbg_level & TPACPI_DBG_DISCLOSETASK) && \ 469 (tpacpi_lifecycle == TPACPI_LIFE_RUNNING))) { \ 470 printk(KERN_DEBUG pr_fmt("%s: PID %d: " format), \ 471 what, task_tgid_vnr(current), ## arg); \ 472 } \ 473 } while (0) 474 475 /* 476 * Quirk handling helpers 477 * 478 * ThinkPad IDs and versions seen in the field so far are 479 * two or three characters from the set [0-9A-Z], i.e. base 36. 480 * 481 * We use values well outside that range as specials. 482 */ 483 484 #define TPACPI_MATCH_ANY 0xffffffffU 485 #define TPACPI_MATCH_ANY_VERSION 0xffffU 486 #define TPACPI_MATCH_UNKNOWN 0U 487 488 /* TPID('1', 'Y') == 0x3159 */ 489 #define TPID(__c1, __c2) (((__c1) << 8) | (__c2)) 490 #define TPID3(__c1, __c2, __c3) (((__c1) << 16) | ((__c2) << 8) | (__c3)) 491 #define TPVER TPID 492 493 #define TPACPI_Q_IBM(__id1, __id2, __quirk) \ 494 { .vendor = PCI_VENDOR_ID_IBM, \ 495 .bios = TPID(__id1, __id2), \ 496 .ec = TPACPI_MATCH_ANY, \ 497 .quirks = (__quirk) } 498 499 #define TPACPI_Q_LNV(__id1, __id2, __quirk) \ 500 { .vendor = PCI_VENDOR_ID_LENOVO, \ 501 .bios = TPID(__id1, __id2), \ 502 .ec = TPACPI_MATCH_ANY, \ 503 .quirks = (__quirk) } 504 505 #define TPACPI_Q_LNV3(__id1, __id2, __id3, __quirk) \ 506 { .vendor = PCI_VENDOR_ID_LENOVO, \ 507 .bios = TPID3(__id1, __id2, __id3), \ 508 .ec = TPACPI_MATCH_ANY, \ 509 .quirks = (__quirk) } 510 511 #define TPACPI_QEC_IBM(__id1, __id2, __quirk) \ 512 { .vendor = PCI_VENDOR_ID_IBM, \ 513 .bios = TPACPI_MATCH_ANY, \ 514 .ec = TPID(__id1, __id2), \ 515 .quirks = (__quirk) } 516 517 #define TPACPI_QEC_LNV(__id1, __id2, __quirk) \ 518 { .vendor = PCI_VENDOR_ID_LENOVO, \ 519 .bios = TPACPI_MATCH_ANY, \ 520 .ec = TPID(__id1, __id2), \ 521 .quirks = (__quirk) } 522 523 struct tpacpi_quirk { 524 unsigned int vendor; 525 u32 bios; 526 u32 ec; 527 unsigned long quirks; 528 }; 529 530 /** 531 * tpacpi_check_quirks() - search BIOS/EC version on a list 532 * @qlist: array of &struct tpacpi_quirk 533 * @qlist_size: number of elements in @qlist 534 * 535 * Iterates over a quirks list until one is found that matches the 536 * ThinkPad's vendor, BIOS and EC model. 537 * 538 * Returns: %0 if nothing matches, otherwise returns the quirks field of 539 * the matching &struct tpacpi_quirk entry. 540 * 541 * The match criteria is: vendor, ec and bios must match. 542 */ 543 static unsigned long __init tpacpi_check_quirks( 544 const struct tpacpi_quirk *qlist, 545 unsigned int qlist_size) 546 { 547 while (qlist_size) { 548 if ((qlist->vendor == thinkpad_id.vendor || 549 qlist->vendor == TPACPI_MATCH_ANY) && 550 (qlist->bios == thinkpad_id.bios_model || 551 qlist->bios == TPACPI_MATCH_ANY) && 552 (qlist->ec == thinkpad_id.ec_model || 553 qlist->ec == TPACPI_MATCH_ANY)) 554 return qlist->quirks; 555 556 qlist_size--; 557 qlist++; 558 } 559 return 0; 560 } 561 562 static inline bool __pure __init tpacpi_is_lenovo(void) 563 { 564 return thinkpad_id.vendor == PCI_VENDOR_ID_LENOVO; 565 } 566 567 static inline bool __pure __init tpacpi_is_ibm(void) 568 { 569 return thinkpad_id.vendor == PCI_VENDOR_ID_IBM; 570 } 571 572 /**************************************************************************** 573 **************************************************************************** 574 * 575 * ACPI Helpers and device model 576 * 577 **************************************************************************** 578 ****************************************************************************/ 579 580 /************************************************************************* 581 * ACPI basic handles 582 */ 583 584 static acpi_handle root_handle; 585 static acpi_handle ec_handle; 586 587 #define TPACPI_HANDLE(object, parent, paths...) \ 588 static acpi_handle object##_handle; \ 589 static const acpi_handle * const object##_parent __initconst = \ 590 &parent##_handle; \ 591 static char *object##_paths[] __initdata = { paths } 592 593 TPACPI_HANDLE(ecrd, ec, "ECRD"); /* 570 */ 594 TPACPI_HANDLE(ecwr, ec, "ECWR"); /* 570 */ 595 596 TPACPI_HANDLE(cmos, root, "\\UCMS", /* R50, R50e, R50p, R51, */ 597 /* T4x, X31, X40 */ 598 "\\CMOS", /* A3x, G4x, R32, T23, T30, X22-24, X30 */ 599 "\\CMS", /* R40, R40e */ 600 ); /* all others */ 601 602 TPACPI_HANDLE(hkey, ec, "\\_SB.HKEY", /* 600e/x, 770e, 770x */ 603 "^HKEY", /* R30, R31 */ 604 "HKEY", /* all others */ 605 ); /* 570 */ 606 607 /************************************************************************* 608 * ACPI helpers 609 */ 610 611 static int acpi_evalf(acpi_handle handle, 612 int *res, char *method, char *fmt, ...) 613 { 614 char *fmt0 = fmt; 615 struct acpi_object_list params; 616 union acpi_object in_objs[TPACPI_MAX_ACPI_ARGS]; 617 struct acpi_buffer result, *resultp; 618 union acpi_object out_obj; 619 acpi_status status; 620 va_list ap; 621 char res_type; 622 int success; 623 int quiet; 624 625 if (!*fmt) { 626 pr_err("acpi_evalf() called with empty format\n"); 627 return 0; 628 } 629 630 if (*fmt == 'q') { 631 quiet = 1; 632 fmt++; 633 } else 634 quiet = 0; 635 636 res_type = *(fmt++); 637 638 params.count = 0; 639 params.pointer = &in_objs[0]; 640 641 va_start(ap, fmt); 642 while (*fmt) { 643 char c = *(fmt++); 644 switch (c) { 645 case 'd': /* int */ 646 in_objs[params.count].integer.value = va_arg(ap, int); 647 in_objs[params.count++].type = ACPI_TYPE_INTEGER; 648 break; 649 /* add more types as needed */ 650 default: 651 pr_err("acpi_evalf() called with invalid format character '%c'\n", 652 c); 653 va_end(ap); 654 return 0; 655 } 656 } 657 va_end(ap); 658 659 if (res_type != 'v') { 660 result.length = sizeof(out_obj); 661 result.pointer = &out_obj; 662 resultp = &result; 663 } else 664 resultp = NULL; 665 666 status = acpi_evaluate_object(handle, method, ¶ms, resultp); 667 668 switch (res_type) { 669 case 'd': /* int */ 670 success = (status == AE_OK && 671 out_obj.type == ACPI_TYPE_INTEGER); 672 if (success && res) 673 *res = out_obj.integer.value; 674 break; 675 case 'v': /* void */ 676 success = status == AE_OK; 677 break; 678 /* add more types as needed */ 679 default: 680 pr_err("acpi_evalf() called with invalid format character '%c'\n", 681 res_type); 682 return 0; 683 } 684 685 if (!success && !quiet) 686 pr_err("acpi_evalf(%s, %s, ...) failed: %s\n", 687 method, fmt0, acpi_format_exception(status)); 688 689 return success; 690 } 691 692 static int acpi_ec_read(int i, u8 *p) 693 { 694 int v; 695 696 if (ecrd_handle) { 697 if (!acpi_evalf(ecrd_handle, &v, NULL, "dd", i)) 698 return 0; 699 *p = v; 700 } else { 701 if (ec_read(i, p) < 0) 702 return 0; 703 } 704 705 return 1; 706 } 707 708 static int acpi_ec_write(int i, u8 v) 709 { 710 if (ecwr_handle) { 711 if (!acpi_evalf(ecwr_handle, NULL, NULL, "vdd", i, v)) 712 return 0; 713 } else { 714 if (ec_write(i, v) < 0) 715 return 0; 716 } 717 718 return 1; 719 } 720 721 static int issue_thinkpad_cmos_command(int cmos_cmd) 722 { 723 if (!cmos_handle) 724 return -ENXIO; 725 726 if (!acpi_evalf(cmos_handle, NULL, NULL, "vd", cmos_cmd)) 727 return -EIO; 728 729 return 0; 730 } 731 732 /************************************************************************* 733 * ACPI device model 734 */ 735 736 #define TPACPI_ACPIHANDLE_INIT(object) \ 737 drv_acpi_handle_init(#object, &object##_handle, *object##_parent, \ 738 object##_paths, ARRAY_SIZE(object##_paths)) 739 740 static void __init drv_acpi_handle_init(const char *name, 741 acpi_handle *handle, const acpi_handle parent, 742 char **paths, const int num_paths) 743 { 744 int i; 745 acpi_status status; 746 747 vdbg_printk(TPACPI_DBG_INIT, "trying to locate ACPI handle for %s\n", 748 name); 749 750 for (i = 0; i < num_paths; i++) { 751 status = acpi_get_handle(parent, paths[i], handle); 752 if (ACPI_SUCCESS(status)) { 753 dbg_printk(TPACPI_DBG_INIT, 754 "Found ACPI handle %s for %s\n", 755 paths[i], name); 756 return; 757 } 758 } 759 760 vdbg_printk(TPACPI_DBG_INIT, "ACPI handle for %s not found\n", 761 name); 762 *handle = NULL; 763 } 764 765 static acpi_status __init tpacpi_acpi_handle_locate_callback(acpi_handle handle, 766 u32 level, void *context, void **return_value) 767 { 768 if (!strcmp(context, "video")) { 769 struct acpi_device *dev = acpi_fetch_acpi_dev(handle); 770 771 if (!dev || strcmp(ACPI_VIDEO_HID, acpi_device_hid(dev))) 772 return AE_OK; 773 } 774 775 *(acpi_handle *)return_value = handle; 776 777 return AE_CTRL_TERMINATE; 778 } 779 780 static void __init tpacpi_acpi_handle_locate(const char *name, 781 const char *hid, 782 acpi_handle *handle) 783 { 784 acpi_status status; 785 acpi_handle device_found; 786 787 BUG_ON(!name || !handle); 788 vdbg_printk(TPACPI_DBG_INIT, 789 "trying to locate ACPI handle for %s, using HID %s\n", 790 name, hid ? hid : "NULL"); 791 792 memset(&device_found, 0, sizeof(device_found)); 793 status = acpi_get_devices(hid, tpacpi_acpi_handle_locate_callback, 794 (void *)name, &device_found); 795 796 *handle = NULL; 797 798 if (ACPI_SUCCESS(status)) { 799 *handle = device_found; 800 dbg_printk(TPACPI_DBG_INIT, 801 "Found ACPI handle for %s\n", name); 802 } else { 803 vdbg_printk(TPACPI_DBG_INIT, 804 "Could not locate an ACPI handle for %s: %s\n", 805 name, acpi_format_exception(status)); 806 } 807 } 808 809 static void dispatch_acpi_notify(acpi_handle handle, u32 event, void *data) 810 { 811 struct ibm_struct *ibm = data; 812 813 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 814 return; 815 816 if (!ibm || !ibm->acpi || !ibm->acpi->notify) 817 return; 818 819 ibm->acpi->notify(ibm, event); 820 } 821 822 static int __init setup_acpi_notify(struct ibm_struct *ibm) 823 { 824 acpi_status status; 825 826 BUG_ON(!ibm->acpi); 827 828 if (!*ibm->acpi->handle) 829 return 0; 830 831 vdbg_printk(TPACPI_DBG_INIT, 832 "setting up ACPI notify for %s\n", ibm->name); 833 834 ibm->acpi->device = acpi_fetch_acpi_dev(*ibm->acpi->handle); 835 if (!ibm->acpi->device) { 836 pr_err("acpi_fetch_acpi_dev(%s) failed\n", ibm->name); 837 return -ENODEV; 838 } 839 840 ibm->acpi->device->driver_data = ibm; 841 scnprintf(acpi_device_class(ibm->acpi->device), 842 sizeof(acpi_device_class(ibm->acpi->device)), 843 "%s/%s", TPACPI_ACPI_EVENT_PREFIX, ibm->name); 844 845 status = acpi_install_notify_handler(*ibm->acpi->handle, 846 ibm->acpi->type, dispatch_acpi_notify, ibm); 847 if (ACPI_FAILURE(status)) { 848 if (status == AE_ALREADY_EXISTS) { 849 pr_notice("another device driver is already handling %s events\n", 850 ibm->name); 851 } else { 852 pr_err("acpi_install_notify_handler(%s) failed: %s\n", 853 ibm->name, acpi_format_exception(status)); 854 } 855 return -ENODEV; 856 } 857 ibm->flags.acpi_notify_installed = 1; 858 return 0; 859 } 860 861 static int __init tpacpi_device_add(struct acpi_device *device) 862 { 863 return 0; 864 } 865 866 static int __init register_tpacpi_subdriver(struct ibm_struct *ibm) 867 { 868 int rc; 869 870 dbg_printk(TPACPI_DBG_INIT, 871 "registering %s as an ACPI driver\n", ibm->name); 872 873 BUG_ON(!ibm->acpi); 874 875 ibm->acpi->driver = kzalloc(sizeof(struct acpi_driver), GFP_KERNEL); 876 if (!ibm->acpi->driver) { 877 pr_err("failed to allocate memory for ibm->acpi->driver\n"); 878 return -ENOMEM; 879 } 880 881 sprintf(ibm->acpi->driver->name, "%s_%s", TPACPI_NAME, ibm->name); 882 ibm->acpi->driver->ids = ibm->acpi->hid; 883 884 ibm->acpi->driver->ops.add = &tpacpi_device_add; 885 886 rc = acpi_bus_register_driver(ibm->acpi->driver); 887 if (rc < 0) { 888 pr_err("acpi_bus_register_driver(%s) failed: %d\n", 889 ibm->name, rc); 890 kfree(ibm->acpi->driver); 891 ibm->acpi->driver = NULL; 892 } else if (!rc) 893 ibm->flags.acpi_driver_registered = 1; 894 895 return rc; 896 } 897 898 899 /**************************************************************************** 900 **************************************************************************** 901 * 902 * Procfs Helpers 903 * 904 **************************************************************************** 905 ****************************************************************************/ 906 907 static int dispatch_proc_show(struct seq_file *m, void *v) 908 { 909 struct ibm_struct *ibm = m->private; 910 911 if (!ibm || !ibm->read) 912 return -EINVAL; 913 return ibm->read(m); 914 } 915 916 static int dispatch_proc_open(struct inode *inode, struct file *file) 917 { 918 return single_open(file, dispatch_proc_show, pde_data(inode)); 919 } 920 921 static ssize_t dispatch_proc_write(struct file *file, 922 const char __user *userbuf, 923 size_t count, loff_t *pos) 924 { 925 struct ibm_struct *ibm = pde_data(file_inode(file)); 926 char *kernbuf; 927 int ret; 928 929 if (!ibm || !ibm->write) 930 return -EINVAL; 931 if (count > PAGE_SIZE - 1) 932 return -EINVAL; 933 934 kernbuf = memdup_user_nul(userbuf, count); 935 if (IS_ERR(kernbuf)) 936 return PTR_ERR(kernbuf); 937 ret = ibm->write(kernbuf); 938 if (ret == 0) 939 ret = count; 940 941 kfree(kernbuf); 942 943 return ret; 944 } 945 946 static const struct proc_ops dispatch_proc_ops = { 947 .proc_open = dispatch_proc_open, 948 .proc_read = seq_read, 949 .proc_lseek = seq_lseek, 950 .proc_release = single_release, 951 .proc_write = dispatch_proc_write, 952 }; 953 954 /**************************************************************************** 955 **************************************************************************** 956 * 957 * Device model: input, hwmon and platform 958 * 959 **************************************************************************** 960 ****************************************************************************/ 961 962 static struct platform_device *tpacpi_pdev; 963 static struct platform_device *tpacpi_sensors_pdev; 964 static struct device *tpacpi_hwmon; 965 static struct device *tpacpi_pprof; 966 static struct input_dev *tpacpi_inputdev; 967 static struct mutex tpacpi_inputdev_send_mutex; 968 static LIST_HEAD(tpacpi_all_drivers); 969 970 #ifdef CONFIG_PM_SLEEP 971 static int tpacpi_suspend_handler(struct device *dev) 972 { 973 struct ibm_struct *ibm, *itmp; 974 975 list_for_each_entry_safe(ibm, itmp, 976 &tpacpi_all_drivers, 977 all_drivers) { 978 if (ibm->suspend) 979 (ibm->suspend)(); 980 } 981 982 return 0; 983 } 984 985 static int tpacpi_resume_handler(struct device *dev) 986 { 987 struct ibm_struct *ibm, *itmp; 988 989 list_for_each_entry_safe(ibm, itmp, 990 &tpacpi_all_drivers, 991 all_drivers) { 992 if (ibm->resume) 993 (ibm->resume)(); 994 } 995 996 return 0; 997 } 998 #endif 999 1000 static SIMPLE_DEV_PM_OPS(tpacpi_pm, 1001 tpacpi_suspend_handler, tpacpi_resume_handler); 1002 1003 static void tpacpi_shutdown_handler(struct platform_device *pdev) 1004 { 1005 struct ibm_struct *ibm, *itmp; 1006 1007 list_for_each_entry_safe(ibm, itmp, 1008 &tpacpi_all_drivers, 1009 all_drivers) { 1010 if (ibm->shutdown) 1011 (ibm->shutdown)(); 1012 } 1013 } 1014 1015 /************************************************************************* 1016 * sysfs support helpers 1017 */ 1018 1019 static int parse_strtoul(const char *buf, 1020 unsigned long max, unsigned long *value) 1021 { 1022 char *endp; 1023 1024 *value = simple_strtoul(skip_spaces(buf), &endp, 0); 1025 endp = skip_spaces(endp); 1026 if (*endp || *value > max) 1027 return -EINVAL; 1028 1029 return 0; 1030 } 1031 1032 static void tpacpi_disable_brightness_delay(void) 1033 { 1034 if (acpi_evalf(hkey_handle, NULL, "PWMS", "qvd", 0)) 1035 pr_notice("ACPI backlight control delay disabled\n"); 1036 } 1037 1038 static void printk_deprecated_attribute(const char * const what, 1039 const char * const details) 1040 { 1041 tpacpi_log_usertask("deprecated sysfs attribute"); 1042 pr_warn("WARNING: sysfs attribute %s is deprecated and will be removed. %s\n", 1043 what, details); 1044 } 1045 1046 /************************************************************************* 1047 * rfkill and radio control support helpers 1048 */ 1049 1050 /* 1051 * ThinkPad-ACPI firmware handling model: 1052 * 1053 * WLSW (master wireless switch) is event-driven, and is common to all 1054 * firmware-controlled radios. It cannot be controlled, just monitored, 1055 * as expected. It overrides all radio state in firmware 1056 * 1057 * The kernel, a masked-off hotkey, and WLSW can change the radio state 1058 * (TODO: verify how WLSW interacts with the returned radio state). 1059 * 1060 * The only time there are shadow radio state changes, is when 1061 * masked-off hotkeys are used. 1062 */ 1063 1064 /* 1065 * Internal driver API for radio state: 1066 * 1067 * int: < 0 = error, otherwise enum tpacpi_rfkill_state 1068 * bool: true means radio blocked (off) 1069 */ 1070 enum tpacpi_rfkill_state { 1071 TPACPI_RFK_RADIO_OFF = 0, 1072 TPACPI_RFK_RADIO_ON 1073 }; 1074 1075 /* rfkill switches */ 1076 enum tpacpi_rfk_id { 1077 TPACPI_RFK_BLUETOOTH_SW_ID = 0, 1078 TPACPI_RFK_WWAN_SW_ID, 1079 TPACPI_RFK_UWB_SW_ID, 1080 TPACPI_RFK_SW_MAX 1081 }; 1082 1083 static const char *tpacpi_rfkill_names[] = { 1084 [TPACPI_RFK_BLUETOOTH_SW_ID] = "bluetooth", 1085 [TPACPI_RFK_WWAN_SW_ID] = "wwan", 1086 [TPACPI_RFK_UWB_SW_ID] = "uwb", 1087 [TPACPI_RFK_SW_MAX] = NULL 1088 }; 1089 1090 /* ThinkPad-ACPI rfkill subdriver */ 1091 struct tpacpi_rfk { 1092 struct rfkill *rfkill; 1093 enum tpacpi_rfk_id id; 1094 const struct tpacpi_rfk_ops *ops; 1095 }; 1096 1097 struct tpacpi_rfk_ops { 1098 /* firmware interface */ 1099 int (*get_status)(void); 1100 int (*set_status)(const enum tpacpi_rfkill_state); 1101 }; 1102 1103 static struct tpacpi_rfk *tpacpi_rfkill_switches[TPACPI_RFK_SW_MAX]; 1104 1105 /* Query FW and update rfkill sw state for a given rfkill switch */ 1106 static int tpacpi_rfk_update_swstate(const struct tpacpi_rfk *tp_rfk) 1107 { 1108 int status; 1109 1110 if (!tp_rfk) 1111 return -ENODEV; 1112 1113 status = (tp_rfk->ops->get_status)(); 1114 if (status < 0) 1115 return status; 1116 1117 rfkill_set_sw_state(tp_rfk->rfkill, 1118 (status == TPACPI_RFK_RADIO_OFF)); 1119 1120 return status; 1121 } 1122 1123 /* 1124 * Sync the HW-blocking state of all rfkill switches, 1125 * do notice it causes the rfkill core to schedule uevents 1126 */ 1127 static void tpacpi_rfk_update_hwblock_state(bool blocked) 1128 { 1129 unsigned int i; 1130 struct tpacpi_rfk *tp_rfk; 1131 1132 for (i = 0; i < TPACPI_RFK_SW_MAX; i++) { 1133 tp_rfk = tpacpi_rfkill_switches[i]; 1134 if (tp_rfk) { 1135 if (rfkill_set_hw_state(tp_rfk->rfkill, 1136 blocked)) { 1137 /* ignore -- we track sw block */ 1138 } 1139 } 1140 } 1141 } 1142 1143 /* Call to get the WLSW state from the firmware */ 1144 static int hotkey_get_wlsw(void); 1145 1146 /* Call to query WLSW state and update all rfkill switches */ 1147 static bool tpacpi_rfk_check_hwblock_state(void) 1148 { 1149 int res = hotkey_get_wlsw(); 1150 int hw_blocked; 1151 1152 /* When unknown or unsupported, we have to assume it is unblocked */ 1153 if (res < 0) 1154 return false; 1155 1156 hw_blocked = (res == TPACPI_RFK_RADIO_OFF); 1157 tpacpi_rfk_update_hwblock_state(hw_blocked); 1158 1159 return hw_blocked; 1160 } 1161 1162 static int tpacpi_rfk_hook_set_block(void *data, bool blocked) 1163 { 1164 struct tpacpi_rfk *tp_rfk = data; 1165 int res; 1166 1167 dbg_printk(TPACPI_DBG_RFKILL, 1168 "request to change radio state to %s\n", 1169 blocked ? "blocked" : "unblocked"); 1170 1171 /* try to set radio state */ 1172 res = (tp_rfk->ops->set_status)(blocked ? 1173 TPACPI_RFK_RADIO_OFF : TPACPI_RFK_RADIO_ON); 1174 1175 /* and update the rfkill core with whatever the FW really did */ 1176 tpacpi_rfk_update_swstate(tp_rfk); 1177 1178 return (res < 0) ? res : 0; 1179 } 1180 1181 static const struct rfkill_ops tpacpi_rfk_rfkill_ops = { 1182 .set_block = tpacpi_rfk_hook_set_block, 1183 }; 1184 1185 static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id, 1186 const struct tpacpi_rfk_ops *tp_rfkops, 1187 const enum rfkill_type rfktype, 1188 const char *name, 1189 const bool set_default) 1190 { 1191 struct tpacpi_rfk *atp_rfk; 1192 int res; 1193 bool sw_state = false; 1194 bool hw_state; 1195 int sw_status; 1196 1197 BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]); 1198 1199 atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL); 1200 if (atp_rfk) 1201 atp_rfk->rfkill = rfkill_alloc(name, 1202 &tpacpi_pdev->dev, 1203 rfktype, 1204 &tpacpi_rfk_rfkill_ops, 1205 atp_rfk); 1206 if (!atp_rfk || !atp_rfk->rfkill) { 1207 pr_err("failed to allocate memory for rfkill class\n"); 1208 kfree(atp_rfk); 1209 return -ENOMEM; 1210 } 1211 1212 atp_rfk->id = id; 1213 atp_rfk->ops = tp_rfkops; 1214 1215 sw_status = (tp_rfkops->get_status)(); 1216 if (sw_status < 0) { 1217 pr_err("failed to read initial state for %s, error %d\n", 1218 name, sw_status); 1219 } else { 1220 sw_state = (sw_status == TPACPI_RFK_RADIO_OFF); 1221 if (set_default) { 1222 /* try to keep the initial state, since we ask the 1223 * firmware to preserve it across S5 in NVRAM */ 1224 rfkill_init_sw_state(atp_rfk->rfkill, sw_state); 1225 } 1226 } 1227 hw_state = tpacpi_rfk_check_hwblock_state(); 1228 rfkill_set_hw_state(atp_rfk->rfkill, hw_state); 1229 1230 res = rfkill_register(atp_rfk->rfkill); 1231 if (res < 0) { 1232 pr_err("failed to register %s rfkill switch: %d\n", name, res); 1233 rfkill_destroy(atp_rfk->rfkill); 1234 kfree(atp_rfk); 1235 return res; 1236 } 1237 1238 tpacpi_rfkill_switches[id] = atp_rfk; 1239 1240 pr_info("rfkill switch %s: radio is %sblocked\n", 1241 name, (sw_state || hw_state) ? "" : "un"); 1242 return 0; 1243 } 1244 1245 static void tpacpi_destroy_rfkill(const enum tpacpi_rfk_id id) 1246 { 1247 struct tpacpi_rfk *tp_rfk; 1248 1249 BUG_ON(id >= TPACPI_RFK_SW_MAX); 1250 1251 tp_rfk = tpacpi_rfkill_switches[id]; 1252 if (tp_rfk) { 1253 rfkill_unregister(tp_rfk->rfkill); 1254 rfkill_destroy(tp_rfk->rfkill); 1255 tpacpi_rfkill_switches[id] = NULL; 1256 kfree(tp_rfk); 1257 } 1258 } 1259 1260 static void printk_deprecated_rfkill_attribute(const char * const what) 1261 { 1262 printk_deprecated_attribute(what, 1263 "Please switch to generic rfkill before year 2010"); 1264 } 1265 1266 /* sysfs <radio> enable ------------------------------------------------ */ 1267 static ssize_t tpacpi_rfk_sysfs_enable_show(const enum tpacpi_rfk_id id, 1268 struct device_attribute *attr, 1269 char *buf) 1270 { 1271 int status; 1272 1273 printk_deprecated_rfkill_attribute(attr->attr.name); 1274 1275 /* This is in the ABI... */ 1276 if (tpacpi_rfk_check_hwblock_state()) { 1277 status = TPACPI_RFK_RADIO_OFF; 1278 } else { 1279 status = tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1280 if (status < 0) 1281 return status; 1282 } 1283 1284 return sysfs_emit(buf, "%d\n", 1285 (status == TPACPI_RFK_RADIO_ON) ? 1 : 0); 1286 } 1287 1288 static ssize_t tpacpi_rfk_sysfs_enable_store(const enum tpacpi_rfk_id id, 1289 struct device_attribute *attr, 1290 const char *buf, size_t count) 1291 { 1292 unsigned long t; 1293 int res; 1294 1295 printk_deprecated_rfkill_attribute(attr->attr.name); 1296 1297 if (parse_strtoul(buf, 1, &t)) 1298 return -EINVAL; 1299 1300 tpacpi_disclose_usertask(attr->attr.name, "set to %ld\n", t); 1301 1302 /* This is in the ABI... */ 1303 if (tpacpi_rfk_check_hwblock_state() && !!t) 1304 return -EPERM; 1305 1306 res = tpacpi_rfkill_switches[id]->ops->set_status((!!t) ? 1307 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF); 1308 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1309 1310 return (res < 0) ? res : count; 1311 } 1312 1313 /* procfs -------------------------------------------------------------- */ 1314 static int tpacpi_rfk_procfs_read(const enum tpacpi_rfk_id id, struct seq_file *m) 1315 { 1316 if (id >= TPACPI_RFK_SW_MAX) 1317 seq_printf(m, "status:\t\tnot supported\n"); 1318 else { 1319 int status; 1320 1321 /* This is in the ABI... */ 1322 if (tpacpi_rfk_check_hwblock_state()) { 1323 status = TPACPI_RFK_RADIO_OFF; 1324 } else { 1325 status = tpacpi_rfk_update_swstate( 1326 tpacpi_rfkill_switches[id]); 1327 if (status < 0) 1328 return status; 1329 } 1330 1331 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status == TPACPI_RFK_RADIO_ON)); 1332 seq_printf(m, "commands:\tenable, disable\n"); 1333 } 1334 1335 return 0; 1336 } 1337 1338 static int tpacpi_rfk_procfs_write(const enum tpacpi_rfk_id id, char *buf) 1339 { 1340 char *cmd; 1341 int status = -1; 1342 int res = 0; 1343 1344 if (id >= TPACPI_RFK_SW_MAX) 1345 return -ENODEV; 1346 1347 while ((cmd = strsep(&buf, ","))) { 1348 if (strstarts(cmd, "enable")) 1349 status = TPACPI_RFK_RADIO_ON; 1350 else if (strstarts(cmd, "disable")) 1351 status = TPACPI_RFK_RADIO_OFF; 1352 else 1353 return -EINVAL; 1354 } 1355 1356 if (status != -1) { 1357 tpacpi_disclose_usertask("procfs", "attempt to %s %s\n", 1358 str_enable_disable(status == TPACPI_RFK_RADIO_ON), 1359 tpacpi_rfkill_names[id]); 1360 res = (tpacpi_rfkill_switches[id]->ops->set_status)(status); 1361 tpacpi_rfk_update_swstate(tpacpi_rfkill_switches[id]); 1362 } 1363 1364 return res; 1365 } 1366 1367 /************************************************************************* 1368 * thinkpad-acpi driver attributes 1369 */ 1370 1371 /* interface_version --------------------------------------------------- */ 1372 static ssize_t interface_version_show(struct device_driver *drv, char *buf) 1373 { 1374 return sysfs_emit(buf, "0x%08x\n", TPACPI_SYSFS_VERSION); 1375 } 1376 static DRIVER_ATTR_RO(interface_version); 1377 1378 /* debug_level --------------------------------------------------------- */ 1379 static ssize_t debug_level_show(struct device_driver *drv, char *buf) 1380 { 1381 return sysfs_emit(buf, "0x%04x\n", dbg_level); 1382 } 1383 1384 static ssize_t debug_level_store(struct device_driver *drv, const char *buf, 1385 size_t count) 1386 { 1387 unsigned long t; 1388 1389 if (parse_strtoul(buf, 0xffff, &t)) 1390 return -EINVAL; 1391 1392 dbg_level = t; 1393 1394 return count; 1395 } 1396 static DRIVER_ATTR_RW(debug_level); 1397 1398 /* version ------------------------------------------------------------- */ 1399 static ssize_t version_show(struct device_driver *drv, char *buf) 1400 { 1401 return sysfs_emit(buf, "%s v%s\n", 1402 TPACPI_DESC, TPACPI_VERSION); 1403 } 1404 static DRIVER_ATTR_RO(version); 1405 1406 /* --------------------------------------------------------------------- */ 1407 1408 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1409 1410 /* wlsw_emulstate ------------------------------------------------------ */ 1411 static ssize_t wlsw_emulstate_show(struct device_driver *drv, char *buf) 1412 { 1413 return sysfs_emit(buf, "%d\n", !!tpacpi_wlsw_emulstate); 1414 } 1415 1416 static ssize_t wlsw_emulstate_store(struct device_driver *drv, const char *buf, 1417 size_t count) 1418 { 1419 unsigned long t; 1420 1421 if (parse_strtoul(buf, 1, &t)) 1422 return -EINVAL; 1423 1424 if (tpacpi_wlsw_emulstate != !!t) { 1425 tpacpi_wlsw_emulstate = !!t; 1426 tpacpi_rfk_update_hwblock_state(!t); /* negative logic */ 1427 } 1428 1429 return count; 1430 } 1431 static DRIVER_ATTR_RW(wlsw_emulstate); 1432 1433 /* bluetooth_emulstate ------------------------------------------------- */ 1434 static ssize_t bluetooth_emulstate_show(struct device_driver *drv, char *buf) 1435 { 1436 return sysfs_emit(buf, "%d\n", !!tpacpi_bluetooth_emulstate); 1437 } 1438 1439 static ssize_t bluetooth_emulstate_store(struct device_driver *drv, 1440 const char *buf, size_t count) 1441 { 1442 unsigned long t; 1443 1444 if (parse_strtoul(buf, 1, &t)) 1445 return -EINVAL; 1446 1447 tpacpi_bluetooth_emulstate = !!t; 1448 1449 return count; 1450 } 1451 static DRIVER_ATTR_RW(bluetooth_emulstate); 1452 1453 /* wwan_emulstate ------------------------------------------------- */ 1454 static ssize_t wwan_emulstate_show(struct device_driver *drv, char *buf) 1455 { 1456 return sysfs_emit(buf, "%d\n", !!tpacpi_wwan_emulstate); 1457 } 1458 1459 static ssize_t wwan_emulstate_store(struct device_driver *drv, const char *buf, 1460 size_t count) 1461 { 1462 unsigned long t; 1463 1464 if (parse_strtoul(buf, 1, &t)) 1465 return -EINVAL; 1466 1467 tpacpi_wwan_emulstate = !!t; 1468 1469 return count; 1470 } 1471 static DRIVER_ATTR_RW(wwan_emulstate); 1472 1473 /* uwb_emulstate ------------------------------------------------- */ 1474 static ssize_t uwb_emulstate_show(struct device_driver *drv, char *buf) 1475 { 1476 return sysfs_emit(buf, "%d\n", !!tpacpi_uwb_emulstate); 1477 } 1478 1479 static ssize_t uwb_emulstate_store(struct device_driver *drv, const char *buf, 1480 size_t count) 1481 { 1482 unsigned long t; 1483 1484 if (parse_strtoul(buf, 1, &t)) 1485 return -EINVAL; 1486 1487 tpacpi_uwb_emulstate = !!t; 1488 1489 return count; 1490 } 1491 static DRIVER_ATTR_RW(uwb_emulstate); 1492 #endif 1493 1494 /************************************************************************* 1495 * Firmware Data 1496 */ 1497 1498 /* 1499 * Table of recommended minimum BIOS versions 1500 * 1501 * Reasons for listing: 1502 * 1. Stable BIOS, listed because the unknown amount of 1503 * bugs and bad ACPI behaviour on older versions 1504 * 1505 * 2. BIOS or EC fw with known bugs that trigger on Linux 1506 * 1507 * 3. BIOS with known reduced functionality in older versions 1508 * 1509 * We recommend the latest BIOS and EC version. 1510 * We only support the latest BIOS and EC fw version as a rule. 1511 * 1512 * Sources: IBM ThinkPad Public Web Documents (update changelogs), 1513 * Information from users in ThinkWiki 1514 * 1515 * WARNING: we use this table also to detect that the machine is 1516 * a ThinkPad in some cases, so don't remove entries lightly. 1517 */ 1518 1519 #define TPV_Q(__v, __id1, __id2, __bv1, __bv2) \ 1520 { .vendor = (__v), \ 1521 .bios = TPID(__id1, __id2), \ 1522 .ec = TPACPI_MATCH_ANY, \ 1523 .quirks = TPACPI_MATCH_ANY_VERSION << 16 \ 1524 | TPVER(__bv1, __bv2) } 1525 1526 #define TPV_Q_X(__v, __bid1, __bid2, __bv1, __bv2, \ 1527 __eid, __ev1, __ev2) \ 1528 { .vendor = (__v), \ 1529 .bios = TPID(__bid1, __bid2), \ 1530 .ec = __eid, \ 1531 .quirks = TPVER(__ev1, __ev2) << 16 \ 1532 | TPVER(__bv1, __bv2) } 1533 1534 #define TPV_QI0(__id1, __id2, __bv1, __bv2) \ 1535 TPV_Q(PCI_VENDOR_ID_IBM, __id1, __id2, __bv1, __bv2) 1536 1537 /* Outdated IBM BIOSes often lack the EC id string */ 1538 #define TPV_QI1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1539 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1540 __bv1, __bv2, TPID(__id1, __id2), \ 1541 __ev1, __ev2), \ 1542 TPV_Q_X(PCI_VENDOR_ID_IBM, __id1, __id2, \ 1543 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1544 __ev1, __ev2) 1545 1546 /* Outdated IBM BIOSes often lack the EC id string */ 1547 #define TPV_QI2(__bid1, __bid2, __bv1, __bv2, \ 1548 __eid1, __eid2, __ev1, __ev2) \ 1549 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1550 __bv1, __bv2, TPID(__eid1, __eid2), \ 1551 __ev1, __ev2), \ 1552 TPV_Q_X(PCI_VENDOR_ID_IBM, __bid1, __bid2, \ 1553 __bv1, __bv2, TPACPI_MATCH_UNKNOWN, \ 1554 __ev1, __ev2) 1555 1556 #define TPV_QL0(__id1, __id2, __bv1, __bv2) \ 1557 TPV_Q(PCI_VENDOR_ID_LENOVO, __id1, __id2, __bv1, __bv2) 1558 1559 #define TPV_QL1(__id1, __id2, __bv1, __bv2, __ev1, __ev2) \ 1560 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __id1, __id2, \ 1561 __bv1, __bv2, TPID(__id1, __id2), \ 1562 __ev1, __ev2) 1563 1564 #define TPV_QL2(__bid1, __bid2, __bv1, __bv2, \ 1565 __eid1, __eid2, __ev1, __ev2) \ 1566 TPV_Q_X(PCI_VENDOR_ID_LENOVO, __bid1, __bid2, \ 1567 __bv1, __bv2, TPID(__eid1, __eid2), \ 1568 __ev1, __ev2) 1569 1570 static const struct tpacpi_quirk tpacpi_bios_version_qtable[] __initconst = { 1571 /* Numeric models ------------------ */ 1572 /* FW MODEL BIOS VERS */ 1573 TPV_QI0('I', 'M', '6', '5'), /* 570 */ 1574 TPV_QI0('I', 'U', '2', '6'), /* 570E */ 1575 TPV_QI0('I', 'B', '5', '4'), /* 600 */ 1576 TPV_QI0('I', 'H', '4', '7'), /* 600E */ 1577 TPV_QI0('I', 'N', '3', '6'), /* 600E */ 1578 TPV_QI0('I', 'T', '5', '5'), /* 600X */ 1579 TPV_QI0('I', 'D', '4', '8'), /* 770, 770E, 770ED */ 1580 TPV_QI0('I', 'I', '4', '2'), /* 770X */ 1581 TPV_QI0('I', 'O', '2', '3'), /* 770Z */ 1582 1583 /* A-series ------------------------- */ 1584 /* FW MODEL BIOS VERS EC VERS */ 1585 TPV_QI0('I', 'W', '5', '9'), /* A20m */ 1586 TPV_QI0('I', 'V', '6', '9'), /* A20p */ 1587 TPV_QI0('1', '0', '2', '6'), /* A21e, A22e */ 1588 TPV_QI0('K', 'U', '3', '6'), /* A21e */ 1589 TPV_QI0('K', 'X', '3', '6'), /* A21m, A22m */ 1590 TPV_QI0('K', 'Y', '3', '8'), /* A21p, A22p */ 1591 TPV_QI0('1', 'B', '1', '7'), /* A22e */ 1592 TPV_QI0('1', '3', '2', '0'), /* A22m */ 1593 TPV_QI0('1', 'E', '7', '3'), /* A30/p (0) */ 1594 TPV_QI1('1', 'G', '4', '1', '1', '7'), /* A31/p (0) */ 1595 TPV_QI1('1', 'N', '1', '6', '0', '7'), /* A31/p (0) */ 1596 1597 /* G-series ------------------------- */ 1598 /* FW MODEL BIOS VERS */ 1599 TPV_QI0('1', 'T', 'A', '6'), /* G40 */ 1600 TPV_QI0('1', 'X', '5', '7'), /* G41 */ 1601 1602 /* R-series, T-series --------------- */ 1603 /* FW MODEL BIOS VERS EC VERS */ 1604 TPV_QI0('1', 'C', 'F', '0'), /* R30 */ 1605 TPV_QI0('1', 'F', 'F', '1'), /* R31 */ 1606 TPV_QI0('1', 'M', '9', '7'), /* R32 */ 1607 TPV_QI0('1', 'O', '6', '1'), /* R40 */ 1608 TPV_QI0('1', 'P', '6', '5'), /* R40 */ 1609 TPV_QI0('1', 'S', '7', '0'), /* R40e */ 1610 TPV_QI1('1', 'R', 'D', 'R', '7', '1'), /* R50/p, R51, 1611 T40/p, T41/p, T42/p (1) */ 1612 TPV_QI1('1', 'V', '7', '1', '2', '8'), /* R50e, R51 (1) */ 1613 TPV_QI1('7', '8', '7', '1', '0', '6'), /* R51e (1) */ 1614 TPV_QI1('7', '6', '6', '9', '1', '6'), /* R52 (1) */ 1615 TPV_QI1('7', '0', '6', '9', '2', '8'), /* R52, T43 (1) */ 1616 1617 TPV_QI0('I', 'Y', '6', '1'), /* T20 */ 1618 TPV_QI0('K', 'Z', '3', '4'), /* T21 */ 1619 TPV_QI0('1', '6', '3', '2'), /* T22 */ 1620 TPV_QI1('1', 'A', '6', '4', '2', '3'), /* T23 (0) */ 1621 TPV_QI1('1', 'I', '7', '1', '2', '0'), /* T30 (0) */ 1622 TPV_QI1('1', 'Y', '6', '5', '2', '9'), /* T43/p (1) */ 1623 1624 TPV_QL1('7', '9', 'E', '3', '5', '0'), /* T60/p */ 1625 TPV_QL1('7', 'C', 'D', '2', '2', '2'), /* R60, R60i */ 1626 TPV_QL1('7', 'E', 'D', '0', '1', '5'), /* R60e, R60i */ 1627 1628 /* BIOS FW BIOS VERS EC FW EC VERS */ 1629 TPV_QI2('1', 'W', '9', '0', '1', 'V', '2', '8'), /* R50e (1) */ 1630 TPV_QL2('7', 'I', '3', '4', '7', '9', '5', '0'), /* T60/p wide */ 1631 1632 /* X-series ------------------------- */ 1633 /* FW MODEL BIOS VERS EC VERS */ 1634 TPV_QI0('I', 'Z', '9', 'D'), /* X20, X21 */ 1635 TPV_QI0('1', 'D', '7', '0'), /* X22, X23, X24 */ 1636 TPV_QI1('1', 'K', '4', '8', '1', '8'), /* X30 (0) */ 1637 TPV_QI1('1', 'Q', '9', '7', '2', '3'), /* X31, X32 (0) */ 1638 TPV_QI1('1', 'U', 'D', '3', 'B', '2'), /* X40 (0) */ 1639 TPV_QI1('7', '4', '6', '4', '2', '7'), /* X41 (0) */ 1640 TPV_QI1('7', '5', '6', '0', '2', '0'), /* X41t (0) */ 1641 1642 TPV_QL1('7', 'B', 'D', '7', '4', '0'), /* X60/s */ 1643 TPV_QL1('7', 'J', '3', '0', '1', '3'), /* X60t */ 1644 1645 /* (0) - older versions lack DMI EC fw string and functionality */ 1646 /* (1) - older versions known to lack functionality */ 1647 }; 1648 1649 #undef TPV_QL1 1650 #undef TPV_QL0 1651 #undef TPV_QI2 1652 #undef TPV_QI1 1653 #undef TPV_QI0 1654 #undef TPV_Q_X 1655 #undef TPV_Q 1656 1657 static void __init tpacpi_check_outdated_fw(void) 1658 { 1659 unsigned long fwvers; 1660 u16 ec_version, bios_version; 1661 1662 fwvers = tpacpi_check_quirks(tpacpi_bios_version_qtable, 1663 ARRAY_SIZE(tpacpi_bios_version_qtable)); 1664 1665 if (!fwvers) 1666 return; 1667 1668 bios_version = fwvers & 0xffffU; 1669 ec_version = (fwvers >> 16) & 0xffffU; 1670 1671 /* note that unknown versions are set to 0x0000 and we use that */ 1672 if ((bios_version > thinkpad_id.bios_release) || 1673 (ec_version > thinkpad_id.ec_release && 1674 ec_version != TPACPI_MATCH_ANY_VERSION)) { 1675 /* 1676 * The changelogs would let us track down the exact 1677 * reason, but it is just too much of a pain to track 1678 * it. We only list BIOSes that are either really 1679 * broken, or really stable to begin with, so it is 1680 * best if the user upgrades the firmware anyway. 1681 */ 1682 pr_warn("WARNING: Outdated ThinkPad BIOS/EC firmware\n"); 1683 pr_warn("WARNING: This firmware may be missing critical bug fixes and/or important features\n"); 1684 } 1685 } 1686 1687 static bool __init tpacpi_is_fw_known(void) 1688 { 1689 return tpacpi_check_quirks(tpacpi_bios_version_qtable, 1690 ARRAY_SIZE(tpacpi_bios_version_qtable)) != 0; 1691 } 1692 1693 /**************************************************************************** 1694 **************************************************************************** 1695 * 1696 * Subdrivers 1697 * 1698 **************************************************************************** 1699 ****************************************************************************/ 1700 1701 /************************************************************************* 1702 * thinkpad-acpi metadata subdriver 1703 */ 1704 1705 static int thinkpad_acpi_driver_read(struct seq_file *m) 1706 { 1707 seq_printf(m, "driver:\t\t%s\n", TPACPI_DESC); 1708 seq_printf(m, "version:\t%s\n", TPACPI_VERSION); 1709 return 0; 1710 } 1711 1712 static struct ibm_struct thinkpad_acpi_driver_data = { 1713 .name = "driver", 1714 .read = thinkpad_acpi_driver_read, 1715 }; 1716 1717 /************************************************************************* 1718 * Hotkey subdriver 1719 */ 1720 1721 /* 1722 * ThinkPad firmware event model 1723 * 1724 * The ThinkPad firmware has two main event interfaces: normal ACPI 1725 * notifications (which follow the ACPI standard), and a private event 1726 * interface. 1727 * 1728 * The private event interface also issues events for the hotkeys. As 1729 * the driver gained features, the event handling code ended up being 1730 * built around the hotkey subdriver. This will need to be refactored 1731 * to a more formal event API eventually. 1732 * 1733 * Some "hotkeys" are actually supposed to be used as event reports, 1734 * such as "brightness has changed", "volume has changed", depending on 1735 * the ThinkPad model and how the firmware is operating. 1736 * 1737 * Unlike other classes, hotkey-class events have mask/unmask control on 1738 * non-ancient firmware. However, how it behaves changes a lot with the 1739 * firmware model and version. 1740 */ 1741 1742 enum { /* hot key scan codes (derived from ACPI DSDT) */ 1743 TP_ACPI_HOTKEYSCAN_FNF1 = 0, 1744 TP_ACPI_HOTKEYSCAN_FNF2, 1745 TP_ACPI_HOTKEYSCAN_FNF3, 1746 TP_ACPI_HOTKEYSCAN_FNF4, 1747 TP_ACPI_HOTKEYSCAN_FNF5, 1748 TP_ACPI_HOTKEYSCAN_FNF6, 1749 TP_ACPI_HOTKEYSCAN_FNF7, 1750 TP_ACPI_HOTKEYSCAN_FNF8, 1751 TP_ACPI_HOTKEYSCAN_FNF9, 1752 TP_ACPI_HOTKEYSCAN_FNF10, 1753 TP_ACPI_HOTKEYSCAN_FNF11, 1754 TP_ACPI_HOTKEYSCAN_FNF12, 1755 TP_ACPI_HOTKEYSCAN_FNBACKSPACE, 1756 TP_ACPI_HOTKEYSCAN_FNINSERT, 1757 TP_ACPI_HOTKEYSCAN_FNDELETE, 1758 TP_ACPI_HOTKEYSCAN_FNHOME, 1759 TP_ACPI_HOTKEYSCAN_FNEND, 1760 TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1761 TP_ACPI_HOTKEYSCAN_FNPAGEDOWN, 1762 TP_ACPI_HOTKEYSCAN_FNSPACE, 1763 TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1764 TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1765 TP_ACPI_HOTKEYSCAN_MUTE, 1766 TP_ACPI_HOTKEYSCAN_THINKPAD, 1767 TP_ACPI_HOTKEYSCAN_UNK1, 1768 TP_ACPI_HOTKEYSCAN_UNK2, 1769 TP_ACPI_HOTKEYSCAN_MICMUTE, 1770 TP_ACPI_HOTKEYSCAN_UNK4, 1771 TP_ACPI_HOTKEYSCAN_CONFIG, 1772 TP_ACPI_HOTKEYSCAN_SEARCH, 1773 TP_ACPI_HOTKEYSCAN_SCALE, 1774 TP_ACPI_HOTKEYSCAN_FILE, 1775 1776 /* Adaptive keyboard keycodes */ 1777 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, /* 32 / 0x20 */ 1778 TP_ACPI_HOTKEYSCAN_MUTE2 = TP_ACPI_HOTKEYSCAN_ADAPTIVE_START, 1779 TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, 1780 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, 1781 TP_ACPI_HOTKEYSCAN_CLOUD, 1782 TP_ACPI_HOTKEYSCAN_UNK9, 1783 TP_ACPI_HOTKEYSCAN_VOICE, 1784 TP_ACPI_HOTKEYSCAN_UNK10, 1785 TP_ACPI_HOTKEYSCAN_GESTURES, 1786 TP_ACPI_HOTKEYSCAN_UNK11, 1787 TP_ACPI_HOTKEYSCAN_UNK12, 1788 TP_ACPI_HOTKEYSCAN_UNK13, 1789 TP_ACPI_HOTKEYSCAN_CONFIG2, 1790 TP_ACPI_HOTKEYSCAN_NEW_TAB, 1791 TP_ACPI_HOTKEYSCAN_RELOAD, 1792 TP_ACPI_HOTKEYSCAN_BACK, 1793 TP_ACPI_HOTKEYSCAN_MIC_DOWN, 1794 TP_ACPI_HOTKEYSCAN_MIC_UP, 1795 TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, 1796 TP_ACPI_HOTKEYSCAN_CAMERA_MODE, 1797 TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, 1798 1799 /* Lenovo extended keymap, starting at 0x1300 */ 1800 TP_ACPI_HOTKEYSCAN_EXTENDED_START, /* 52 / 0x34 */ 1801 /* first new observed key (star, favorites) is 0x1311 */ 1802 TP_ACPI_HOTKEYSCAN_STAR = 69, 1803 TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, 1804 TP_ACPI_HOTKEYSCAN_CALCULATOR, 1805 TP_ACPI_HOTKEYSCAN_BLUETOOTH, 1806 TP_ACPI_HOTKEYSCAN_KEYBOARD, 1807 TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, /* Used by "Lenovo Quick Clean" */ 1808 TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, 1809 TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, 1810 TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, 1811 }; 1812 1813 enum { /* Keys/events available through NVRAM polling */ 1814 TPACPI_HKEY_NVRAM_KNOWN_MASK = 0x00fb88c0U, 1815 TPACPI_HKEY_NVRAM_GOOD_MASK = 0x00fb8000U, 1816 }; 1817 1818 enum { /* Positions of some of the keys in hotkey masks */ 1819 TP_ACPI_HKEY_DISPSWTCH_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF7, 1820 TP_ACPI_HKEY_DISPXPAND_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF8, 1821 TP_ACPI_HKEY_HIBERNATE_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNF12, 1822 TP_ACPI_HKEY_BRGHTUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNHOME, 1823 TP_ACPI_HKEY_BRGHTDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNEND, 1824 TP_ACPI_HKEY_KBD_LIGHT_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNPAGEUP, 1825 TP_ACPI_HKEY_ZOOM_MASK = 1 << TP_ACPI_HOTKEYSCAN_FNSPACE, 1826 TP_ACPI_HKEY_VOLUP_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEUP, 1827 TP_ACPI_HKEY_VOLDWN_MASK = 1 << TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, 1828 TP_ACPI_HKEY_MUTE_MASK = 1 << TP_ACPI_HOTKEYSCAN_MUTE, 1829 TP_ACPI_HKEY_THINKPAD_MASK = 1 << TP_ACPI_HOTKEYSCAN_THINKPAD, 1830 }; 1831 1832 enum { /* NVRAM to ACPI HKEY group map */ 1833 TP_NVRAM_HKEY_GROUP_HK2 = TP_ACPI_HKEY_THINKPAD_MASK | 1834 TP_ACPI_HKEY_ZOOM_MASK | 1835 TP_ACPI_HKEY_DISPSWTCH_MASK | 1836 TP_ACPI_HKEY_HIBERNATE_MASK, 1837 TP_NVRAM_HKEY_GROUP_BRIGHTNESS = TP_ACPI_HKEY_BRGHTUP_MASK | 1838 TP_ACPI_HKEY_BRGHTDWN_MASK, 1839 TP_NVRAM_HKEY_GROUP_VOLUME = TP_ACPI_HKEY_VOLUP_MASK | 1840 TP_ACPI_HKEY_VOLDWN_MASK | 1841 TP_ACPI_HKEY_MUTE_MASK, 1842 }; 1843 1844 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 1845 struct tp_nvram_state { 1846 u16 thinkpad_toggle:1; 1847 u16 zoom_toggle:1; 1848 u16 display_toggle:1; 1849 u16 thinklight_toggle:1; 1850 u16 hibernate_toggle:1; 1851 u16 displayexp_toggle:1; 1852 u16 display_state:1; 1853 u16 brightness_toggle:1; 1854 u16 volume_toggle:1; 1855 u16 mute:1; 1856 1857 u8 brightness_level; 1858 u8 volume_level; 1859 }; 1860 1861 /* kthread for the hotkey poller */ 1862 static struct task_struct *tpacpi_hotkey_task; 1863 1864 /* 1865 * Acquire mutex to write poller control variables as an 1866 * atomic block. 1867 * 1868 * Increment hotkey_config_change when changing them if you 1869 * want the kthread to forget old state. 1870 * 1871 * See HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1872 */ 1873 static struct mutex hotkey_thread_data_mutex; 1874 static unsigned int hotkey_config_change; 1875 1876 /* 1877 * hotkey poller control variables 1878 * 1879 * Must be atomic or readers will also need to acquire mutex 1880 * 1881 * HOTKEY_CONFIG_CRITICAL_START/HOTKEY_CONFIG_CRITICAL_END 1882 * should be used only when the changes need to be taken as 1883 * a block, OR when one needs to force the kthread to forget 1884 * old state. 1885 */ 1886 static u32 hotkey_source_mask; /* bit mask 0=ACPI,1=NVRAM */ 1887 static unsigned int hotkey_poll_freq = 10; /* Hz */ 1888 1889 #define HOTKEY_CONFIG_CRITICAL_START \ 1890 do { \ 1891 mutex_lock(&hotkey_thread_data_mutex); \ 1892 hotkey_config_change++; \ 1893 } while (0); 1894 #define HOTKEY_CONFIG_CRITICAL_END \ 1895 mutex_unlock(&hotkey_thread_data_mutex); 1896 1897 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1898 1899 #define hotkey_source_mask 0U 1900 #define HOTKEY_CONFIG_CRITICAL_START 1901 #define HOTKEY_CONFIG_CRITICAL_END 1902 1903 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 1904 1905 static struct mutex hotkey_mutex; 1906 1907 static enum { /* Reasons for waking up */ 1908 TP_ACPI_WAKEUP_NONE = 0, /* None or unknown */ 1909 TP_ACPI_WAKEUP_BAYEJ, /* Bay ejection request */ 1910 TP_ACPI_WAKEUP_UNDOCK, /* Undock request */ 1911 } hotkey_wakeup_reason; 1912 1913 static int hotkey_autosleep_ack; 1914 1915 static u32 hotkey_orig_mask; /* events the BIOS had enabled */ 1916 static u32 hotkey_all_mask; /* all events supported in fw */ 1917 static u32 hotkey_adaptive_all_mask; /* all adaptive events supported in fw */ 1918 static u32 hotkey_reserved_mask; /* events better left disabled */ 1919 static u32 hotkey_driver_mask; /* events needed by the driver */ 1920 static u32 hotkey_user_mask; /* events visible to userspace */ 1921 static u32 hotkey_acpi_mask; /* events enabled in firmware */ 1922 1923 static bool tpacpi_driver_event(const unsigned int hkey_event); 1924 static void hotkey_poll_setup(const bool may_warn); 1925 1926 /* HKEY.MHKG() return bits */ 1927 #define TP_HOTKEY_TABLET_MASK (1 << 3) 1928 enum { 1929 TP_ACPI_MULTI_MODE_INVALID = 0, 1930 TP_ACPI_MULTI_MODE_UNKNOWN = 1 << 0, 1931 TP_ACPI_MULTI_MODE_LAPTOP = 1 << 1, 1932 TP_ACPI_MULTI_MODE_TABLET = 1 << 2, 1933 TP_ACPI_MULTI_MODE_FLAT = 1 << 3, 1934 TP_ACPI_MULTI_MODE_STAND = 1 << 4, 1935 TP_ACPI_MULTI_MODE_TENT = 1 << 5, 1936 TP_ACPI_MULTI_MODE_STAND_TENT = 1 << 6, 1937 }; 1938 1939 enum { 1940 /* The following modes are considered tablet mode for the purpose of 1941 * reporting the status to userspace. i.e. in all these modes it makes 1942 * sense to disable the laptop input devices such as touchpad and 1943 * keyboard. 1944 */ 1945 TP_ACPI_MULTI_MODE_TABLET_LIKE = TP_ACPI_MULTI_MODE_TABLET | 1946 TP_ACPI_MULTI_MODE_STAND | 1947 TP_ACPI_MULTI_MODE_TENT | 1948 TP_ACPI_MULTI_MODE_STAND_TENT, 1949 }; 1950 1951 static int hotkey_get_wlsw(void) 1952 { 1953 int status; 1954 1955 if (!tp_features.hotkey_wlsw) 1956 return -ENODEV; 1957 1958 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 1959 if (dbg_wlswemul) 1960 return (tpacpi_wlsw_emulstate) ? 1961 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 1962 #endif 1963 1964 if (!acpi_evalf(hkey_handle, &status, "WLSW", "d")) 1965 return -EIO; 1966 1967 return (status) ? TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 1968 } 1969 1970 static int hotkey_gmms_get_tablet_mode(int s, int *has_tablet_mode) 1971 { 1972 int type = (s >> 16) & 0xffff; 1973 int value = s & 0xffff; 1974 int mode = TP_ACPI_MULTI_MODE_INVALID; 1975 int valid_modes = 0; 1976 1977 if (has_tablet_mode) 1978 *has_tablet_mode = 0; 1979 1980 switch (type) { 1981 case 1: 1982 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1983 TP_ACPI_MULTI_MODE_TABLET | 1984 TP_ACPI_MULTI_MODE_STAND_TENT; 1985 break; 1986 case 2: 1987 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1988 TP_ACPI_MULTI_MODE_FLAT | 1989 TP_ACPI_MULTI_MODE_TABLET | 1990 TP_ACPI_MULTI_MODE_STAND | 1991 TP_ACPI_MULTI_MODE_TENT; 1992 break; 1993 case 3: 1994 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 1995 TP_ACPI_MULTI_MODE_FLAT; 1996 break; 1997 case 4: 1998 case 5: 1999 /* In mode 4, FLAT is not specified as a valid mode. However, 2000 * it can be seen at least on the X1 Yoga 2nd Generation. 2001 */ 2002 valid_modes = TP_ACPI_MULTI_MODE_LAPTOP | 2003 TP_ACPI_MULTI_MODE_FLAT | 2004 TP_ACPI_MULTI_MODE_TABLET | 2005 TP_ACPI_MULTI_MODE_STAND | 2006 TP_ACPI_MULTI_MODE_TENT; 2007 break; 2008 default: 2009 pr_err("Unknown multi mode status type %d with value 0x%04X, please report this to %s\n", 2010 type, value, TPACPI_MAIL); 2011 return 0; 2012 } 2013 2014 if (has_tablet_mode && (valid_modes & TP_ACPI_MULTI_MODE_TABLET_LIKE)) 2015 *has_tablet_mode = 1; 2016 2017 switch (value) { 2018 case 1: 2019 mode = TP_ACPI_MULTI_MODE_LAPTOP; 2020 break; 2021 case 2: 2022 mode = TP_ACPI_MULTI_MODE_FLAT; 2023 break; 2024 case 3: 2025 mode = TP_ACPI_MULTI_MODE_TABLET; 2026 break; 2027 case 4: 2028 if (type == 1) 2029 mode = TP_ACPI_MULTI_MODE_STAND_TENT; 2030 else 2031 mode = TP_ACPI_MULTI_MODE_STAND; 2032 break; 2033 case 5: 2034 mode = TP_ACPI_MULTI_MODE_TENT; 2035 break; 2036 default: 2037 if (type == 5 && value == 0xffff) { 2038 pr_warn("Multi mode status is undetected, assuming laptop\n"); 2039 return 0; 2040 } 2041 } 2042 2043 if (!(mode & valid_modes)) { 2044 pr_err("Unknown/reserved multi mode value 0x%04X for type %d, please report this to %s\n", 2045 value, type, TPACPI_MAIL); 2046 return 0; 2047 } 2048 2049 return !!(mode & TP_ACPI_MULTI_MODE_TABLET_LIKE); 2050 } 2051 2052 static int hotkey_get_tablet_mode(int *status) 2053 { 2054 int s; 2055 2056 switch (tp_features.hotkey_tablet) { 2057 case TP_HOTKEY_TABLET_USES_MHKG: 2058 if (!acpi_evalf(hkey_handle, &s, "MHKG", "d")) 2059 return -EIO; 2060 2061 *status = ((s & TP_HOTKEY_TABLET_MASK) != 0); 2062 break; 2063 case TP_HOTKEY_TABLET_USES_GMMS: 2064 if (!acpi_evalf(hkey_handle, &s, "GMMS", "dd", 0)) 2065 return -EIO; 2066 2067 *status = hotkey_gmms_get_tablet_mode(s, NULL); 2068 break; 2069 default: 2070 break; 2071 } 2072 2073 return 0; 2074 } 2075 2076 /* 2077 * Reads current event mask from firmware, and updates 2078 * hotkey_acpi_mask accordingly. Also resets any bits 2079 * from hotkey_user_mask that are unavailable to be 2080 * delivered (shadow requirement of the userspace ABI). 2081 */ 2082 static int hotkey_mask_get(void) 2083 { 2084 lockdep_assert_held(&hotkey_mutex); 2085 2086 if (tp_features.hotkey_mask) { 2087 u32 m = 0; 2088 2089 if (!acpi_evalf(hkey_handle, &m, "DHKN", "d")) 2090 return -EIO; 2091 2092 hotkey_acpi_mask = m; 2093 } else { 2094 /* no mask support doesn't mean no event support... */ 2095 hotkey_acpi_mask = hotkey_all_mask; 2096 } 2097 2098 /* sync userspace-visible mask */ 2099 hotkey_user_mask &= (hotkey_acpi_mask | hotkey_source_mask); 2100 2101 return 0; 2102 } 2103 2104 static void hotkey_mask_warn_incomplete_mask(void) 2105 { 2106 /* log only what the user can fix... */ 2107 const u32 wantedmask = hotkey_driver_mask & 2108 ~(hotkey_acpi_mask | hotkey_source_mask) & 2109 (hotkey_all_mask | TPACPI_HKEY_NVRAM_KNOWN_MASK); 2110 2111 if (wantedmask) 2112 pr_notice("required events 0x%08x not enabled!\n", wantedmask); 2113 } 2114 2115 /* 2116 * Set the firmware mask when supported 2117 * 2118 * Also calls hotkey_mask_get to update hotkey_acpi_mask. 2119 * 2120 * NOTE: does not set bits in hotkey_user_mask, but may reset them. 2121 */ 2122 static int hotkey_mask_set(u32 mask) 2123 { 2124 int i; 2125 int rc = 0; 2126 2127 const u32 fwmask = mask & ~hotkey_source_mask; 2128 2129 lockdep_assert_held(&hotkey_mutex); 2130 2131 if (tp_features.hotkey_mask) { 2132 for (i = 0; i < 32; i++) { 2133 if (!acpi_evalf(hkey_handle, 2134 NULL, "MHKM", "vdd", i + 1, 2135 !!(mask & (1 << i)))) { 2136 rc = -EIO; 2137 break; 2138 } 2139 } 2140 } 2141 2142 /* 2143 * We *must* make an inconditional call to hotkey_mask_get to 2144 * refresh hotkey_acpi_mask and update hotkey_user_mask 2145 * 2146 * Take the opportunity to also log when we cannot _enable_ 2147 * a given event. 2148 */ 2149 if (!hotkey_mask_get() && !rc && (fwmask & ~hotkey_acpi_mask)) { 2150 pr_notice("asked for hotkey mask 0x%08x, but firmware forced it to 0x%08x\n", 2151 fwmask, hotkey_acpi_mask); 2152 } 2153 2154 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING) 2155 hotkey_mask_warn_incomplete_mask(); 2156 2157 return rc; 2158 } 2159 2160 /* 2161 * Sets hotkey_user_mask and tries to set the firmware mask 2162 */ 2163 static int hotkey_user_mask_set(const u32 mask) 2164 { 2165 int rc; 2166 2167 lockdep_assert_held(&hotkey_mutex); 2168 2169 /* Give people a chance to notice they are doing something that 2170 * is bound to go boom on their users sooner or later */ 2171 if (!tp_warned.hotkey_mask_ff && 2172 (mask == 0xffff || mask == 0xffffff || 2173 mask == 0xffffffff)) { 2174 tp_warned.hotkey_mask_ff = 1; 2175 pr_notice("setting the hotkey mask to 0x%08x is likely not the best way to go about it\n", 2176 mask); 2177 pr_notice("please consider using the driver defaults, and refer to up-to-date thinkpad-acpi documentation\n"); 2178 } 2179 2180 /* Try to enable what the user asked for, plus whatever we need. 2181 * this syncs everything but won't enable bits in hotkey_user_mask */ 2182 rc = hotkey_mask_set((mask | hotkey_driver_mask) & ~hotkey_source_mask); 2183 2184 /* Enable the available bits in hotkey_user_mask */ 2185 hotkey_user_mask = mask & (hotkey_acpi_mask | hotkey_source_mask); 2186 2187 return rc; 2188 } 2189 2190 /* 2191 * Sets the driver hotkey mask. 2192 * 2193 * Can be called even if the hotkey subdriver is inactive 2194 */ 2195 static int tpacpi_hotkey_driver_mask_set(const u32 mask) 2196 { 2197 int rc; 2198 2199 /* Do the right thing if hotkey_init has not been called yet */ 2200 if (!tp_features.hotkey) { 2201 hotkey_driver_mask = mask; 2202 return 0; 2203 } 2204 2205 mutex_lock(&hotkey_mutex); 2206 2207 HOTKEY_CONFIG_CRITICAL_START 2208 hotkey_driver_mask = mask; 2209 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2210 hotkey_source_mask |= (mask & ~hotkey_all_mask); 2211 #endif 2212 HOTKEY_CONFIG_CRITICAL_END 2213 2214 rc = hotkey_mask_set((hotkey_acpi_mask | hotkey_driver_mask) & 2215 ~hotkey_source_mask); 2216 hotkey_poll_setup(true); 2217 2218 mutex_unlock(&hotkey_mutex); 2219 2220 return rc; 2221 } 2222 2223 static int hotkey_status_get(int *status) 2224 { 2225 if (!acpi_evalf(hkey_handle, status, "DHKC", "d")) 2226 return -EIO; 2227 2228 return 0; 2229 } 2230 2231 static int hotkey_status_set(bool enable) 2232 { 2233 if (!acpi_evalf(hkey_handle, NULL, "MHKC", "vd", enable ? 1 : 0)) 2234 return -EIO; 2235 2236 return 0; 2237 } 2238 2239 static void tpacpi_input_send_tabletsw(void) 2240 { 2241 int state; 2242 2243 if (tp_features.hotkey_tablet && 2244 !hotkey_get_tablet_mode(&state)) { 2245 mutex_lock(&tpacpi_inputdev_send_mutex); 2246 2247 input_report_switch(tpacpi_inputdev, 2248 SW_TABLET_MODE, !!state); 2249 input_sync(tpacpi_inputdev); 2250 2251 mutex_unlock(&tpacpi_inputdev_send_mutex); 2252 } 2253 } 2254 2255 #define GCES_NO_SHUTTER_DEVICE BIT(31) 2256 2257 static int get_camera_shutter(void) 2258 { 2259 acpi_handle gces_handle; 2260 int output; 2261 2262 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GCES", &gces_handle))) 2263 return -ENODEV; 2264 2265 if (!acpi_evalf(gces_handle, &output, NULL, "dd", 0)) 2266 return -EIO; 2267 2268 if (output & GCES_NO_SHUTTER_DEVICE) 2269 return -ENODEV; 2270 2271 return output; 2272 } 2273 2274 static bool tpacpi_input_send_key(const u32 hkey, bool *send_acpi_ev) 2275 { 2276 bool known_ev; 2277 u32 scancode; 2278 2279 if (tpacpi_driver_event(hkey)) 2280 return true; 2281 2282 /* 2283 * Before the conversion to using the sparse-keymap helpers the driver used to 2284 * map the hkey event codes to 0x00 - 0x4d scancodes so that a straight scancode 2285 * indexed array could be used to map scancodes to keycodes: 2286 * 2287 * 0x1001 - 0x1020 -> 0x00 - 0x1f (Original ThinkPad events) 2288 * 0x1103 - 0x1116 -> 0x20 - 0x33 (Adaptive keyboard, 2014 X1 Carbon) 2289 * 0x1300 - 0x1319 -> 0x34 - 0x4d (Additional keys send in 2017+ models) 2290 * 2291 * The sparse-keymap tables still use these scancodes for these ranges to 2292 * preserve userspace API compatibility (e.g. hwdb keymappings). 2293 */ 2294 if (hkey >= TP_HKEY_EV_ORIG_KEY_START && 2295 hkey <= TP_HKEY_EV_ORIG_KEY_END) { 2296 scancode = hkey - TP_HKEY_EV_ORIG_KEY_START; 2297 if (!(hotkey_user_mask & (1 << scancode))) 2298 return true; /* Not reported but still a known code */ 2299 } else if (hkey >= TP_HKEY_EV_ADAPTIVE_KEY_START && 2300 hkey <= TP_HKEY_EV_ADAPTIVE_KEY_END) { 2301 scancode = hkey - TP_HKEY_EV_ADAPTIVE_KEY_START + 2302 TP_ACPI_HOTKEYSCAN_ADAPTIVE_START; 2303 } else if (hkey >= TP_HKEY_EV_EXTENDED_KEY_START && 2304 hkey <= TP_HKEY_EV_EXTENDED_KEY_END) { 2305 scancode = hkey - TP_HKEY_EV_EXTENDED_KEY_START + 2306 TP_ACPI_HOTKEYSCAN_EXTENDED_START; 2307 } else { 2308 /* 2309 * Do not send ACPI netlink events for unknown hotkeys, to 2310 * avoid userspace starting to rely on them. Instead these 2311 * should be added to the keymap to send evdev events. 2312 */ 2313 if (send_acpi_ev) 2314 *send_acpi_ev = false; 2315 2316 scancode = hkey; 2317 } 2318 2319 mutex_lock(&tpacpi_inputdev_send_mutex); 2320 known_ev = sparse_keymap_report_event(tpacpi_inputdev, scancode, 1, true); 2321 mutex_unlock(&tpacpi_inputdev_send_mutex); 2322 2323 return known_ev; 2324 } 2325 2326 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2327 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver; 2328 2329 /* Do NOT call without validating scancode first */ 2330 static void tpacpi_hotkey_send_key(unsigned int scancode) 2331 { 2332 tpacpi_input_send_key(TP_HKEY_EV_ORIG_KEY_START + scancode, NULL); 2333 } 2334 2335 static void hotkey_read_nvram(struct tp_nvram_state *n, const u32 m) 2336 { 2337 u8 d; 2338 2339 if (m & TP_NVRAM_HKEY_GROUP_HK2) { 2340 d = nvram_read_byte(TP_NVRAM_ADDR_HK2); 2341 n->thinkpad_toggle = !!(d & TP_NVRAM_MASK_HKT_THINKPAD); 2342 n->zoom_toggle = !!(d & TP_NVRAM_MASK_HKT_ZOOM); 2343 n->display_toggle = !!(d & TP_NVRAM_MASK_HKT_DISPLAY); 2344 n->hibernate_toggle = !!(d & TP_NVRAM_MASK_HKT_HIBERNATE); 2345 } 2346 if (m & TP_ACPI_HKEY_KBD_LIGHT_MASK) { 2347 d = nvram_read_byte(TP_NVRAM_ADDR_THINKLIGHT); 2348 n->thinklight_toggle = !!(d & TP_NVRAM_MASK_THINKLIGHT); 2349 } 2350 if (m & TP_ACPI_HKEY_DISPXPAND_MASK) { 2351 d = nvram_read_byte(TP_NVRAM_ADDR_VIDEO); 2352 n->displayexp_toggle = 2353 !!(d & TP_NVRAM_MASK_HKT_DISPEXPND); 2354 } 2355 if (m & TP_NVRAM_HKEY_GROUP_BRIGHTNESS) { 2356 d = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 2357 n->brightness_level = (d & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 2358 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 2359 n->brightness_toggle = 2360 !!(d & TP_NVRAM_MASK_HKT_BRIGHTNESS); 2361 } 2362 if (m & TP_NVRAM_HKEY_GROUP_VOLUME) { 2363 d = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 2364 n->volume_level = (d & TP_NVRAM_MASK_LEVEL_VOLUME) 2365 >> TP_NVRAM_POS_LEVEL_VOLUME; 2366 n->mute = !!(d & TP_NVRAM_MASK_MUTE); 2367 n->volume_toggle = !!(d & TP_NVRAM_MASK_HKT_VOLUME); 2368 } 2369 } 2370 2371 #define TPACPI_COMPARE_KEY(__scancode, __member) \ 2372 do { \ 2373 if ((event_mask & (1 << __scancode)) && \ 2374 oldn->__member != newn->__member) \ 2375 tpacpi_hotkey_send_key(__scancode); \ 2376 } while (0) 2377 2378 #define TPACPI_MAY_SEND_KEY(__scancode) \ 2379 do { \ 2380 if (event_mask & (1 << __scancode)) \ 2381 tpacpi_hotkey_send_key(__scancode); \ 2382 } while (0) 2383 2384 static void issue_volchange(const unsigned int oldvol, 2385 const unsigned int newvol, 2386 const u32 event_mask) 2387 { 2388 unsigned int i = oldvol; 2389 2390 while (i > newvol) { 2391 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2392 i--; 2393 } 2394 while (i < newvol) { 2395 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2396 i++; 2397 } 2398 } 2399 2400 static void issue_brightnesschange(const unsigned int oldbrt, 2401 const unsigned int newbrt, 2402 const u32 event_mask) 2403 { 2404 unsigned int i = oldbrt; 2405 2406 while (i > newbrt) { 2407 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2408 i--; 2409 } 2410 while (i < newbrt) { 2411 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2412 i++; 2413 } 2414 } 2415 2416 static void hotkey_compare_and_issue_event(struct tp_nvram_state *oldn, 2417 struct tp_nvram_state *newn, 2418 const u32 event_mask) 2419 { 2420 2421 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_THINKPAD, thinkpad_toggle); 2422 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNSPACE, zoom_toggle); 2423 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF7, display_toggle); 2424 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF12, hibernate_toggle); 2425 2426 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNPAGEUP, thinklight_toggle); 2427 2428 TPACPI_COMPARE_KEY(TP_ACPI_HOTKEYSCAN_FNF8, displayexp_toggle); 2429 2430 /* 2431 * Handle volume 2432 * 2433 * This code is supposed to duplicate the IBM firmware behaviour: 2434 * - Pressing MUTE issues mute hotkey message, even when already mute 2435 * - Pressing Volume up/down issues volume up/down hotkey messages, 2436 * even when already at maximum or minimum volume 2437 * - The act of unmuting issues volume up/down notification, 2438 * depending which key was used to unmute 2439 * 2440 * We are constrained to what the NVRAM can tell us, which is not much 2441 * and certainly not enough if more than one volume hotkey was pressed 2442 * since the last poll cycle. 2443 * 2444 * Just to make our life interesting, some newer Lenovo ThinkPads have 2445 * bugs in the BIOS and may fail to update volume_toggle properly. 2446 */ 2447 if (newn->mute) { 2448 /* muted */ 2449 if (!oldn->mute || 2450 oldn->volume_toggle != newn->volume_toggle || 2451 oldn->volume_level != newn->volume_level) { 2452 /* recently muted, or repeated mute keypress, or 2453 * multiple presses ending in mute */ 2454 issue_volchange(oldn->volume_level, newn->volume_level, 2455 event_mask); 2456 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_MUTE); 2457 } 2458 } else { 2459 /* unmute */ 2460 if (oldn->mute) { 2461 /* recently unmuted, issue 'unmute' keypress */ 2462 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2463 } 2464 if (oldn->volume_level != newn->volume_level) { 2465 issue_volchange(oldn->volume_level, newn->volume_level, 2466 event_mask); 2467 } else if (oldn->volume_toggle != newn->volume_toggle) { 2468 /* repeated vol up/down keypress at end of scale ? */ 2469 if (newn->volume_level == 0) 2470 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEDOWN); 2471 else if (newn->volume_level >= TP_NVRAM_LEVEL_VOLUME_MAX) 2472 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_VOLUMEUP); 2473 } 2474 } 2475 2476 /* handle brightness */ 2477 if (oldn->brightness_level != newn->brightness_level) { 2478 issue_brightnesschange(oldn->brightness_level, 2479 newn->brightness_level, event_mask); 2480 } else if (oldn->brightness_toggle != newn->brightness_toggle) { 2481 /* repeated key presses that didn't change state */ 2482 if (newn->brightness_level == 0) 2483 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNEND); 2484 else if (newn->brightness_level >= bright_maxlvl 2485 && !tp_features.bright_unkfw) 2486 TPACPI_MAY_SEND_KEY(TP_ACPI_HOTKEYSCAN_FNHOME); 2487 } 2488 2489 #undef TPACPI_COMPARE_KEY 2490 #undef TPACPI_MAY_SEND_KEY 2491 } 2492 2493 /* 2494 * Polling driver 2495 * 2496 * We track all events in hotkey_source_mask all the time, since 2497 * most of them are edge-based. We only issue those requested by 2498 * hotkey_user_mask or hotkey_driver_mask, though. 2499 */ 2500 static int hotkey_kthread(void *data) 2501 { 2502 struct tp_nvram_state s[2] = { 0 }; 2503 u32 poll_mask, event_mask; 2504 unsigned int si, so; 2505 unsigned long t; 2506 unsigned int change_detector; 2507 unsigned int poll_freq; 2508 bool was_frozen; 2509 2510 if (tpacpi_lifecycle == TPACPI_LIFE_EXITING) 2511 goto exit; 2512 2513 set_freezable(); 2514 2515 so = 0; 2516 si = 1; 2517 t = 0; 2518 2519 /* Initial state for compares */ 2520 mutex_lock(&hotkey_thread_data_mutex); 2521 change_detector = hotkey_config_change; 2522 poll_mask = hotkey_source_mask; 2523 event_mask = hotkey_source_mask & 2524 (hotkey_driver_mask | hotkey_user_mask); 2525 poll_freq = hotkey_poll_freq; 2526 mutex_unlock(&hotkey_thread_data_mutex); 2527 hotkey_read_nvram(&s[so], poll_mask); 2528 2529 while (!kthread_should_stop()) { 2530 if (t == 0) { 2531 if (likely(poll_freq)) 2532 t = 1000/poll_freq; 2533 else 2534 t = 100; /* should never happen... */ 2535 } 2536 t = msleep_interruptible(t); 2537 if (unlikely(kthread_freezable_should_stop(&was_frozen))) 2538 break; 2539 2540 if (t > 0 && !was_frozen) 2541 continue; 2542 2543 mutex_lock(&hotkey_thread_data_mutex); 2544 if (was_frozen || hotkey_config_change != change_detector) { 2545 /* forget old state on thaw or config change */ 2546 si = so; 2547 t = 0; 2548 change_detector = hotkey_config_change; 2549 } 2550 poll_mask = hotkey_source_mask; 2551 event_mask = hotkey_source_mask & 2552 (hotkey_driver_mask | hotkey_user_mask); 2553 poll_freq = hotkey_poll_freq; 2554 mutex_unlock(&hotkey_thread_data_mutex); 2555 2556 if (likely(poll_mask)) { 2557 hotkey_read_nvram(&s[si], poll_mask); 2558 if (likely(si != so)) { 2559 hotkey_compare_and_issue_event(&s[so], &s[si], 2560 event_mask); 2561 } 2562 } 2563 2564 so = si; 2565 si ^= 1; 2566 } 2567 2568 exit: 2569 return 0; 2570 } 2571 2572 static void hotkey_poll_stop_sync(void) 2573 { 2574 lockdep_assert_held(&hotkey_mutex); 2575 2576 if (tpacpi_hotkey_task) { 2577 kthread_stop(tpacpi_hotkey_task); 2578 tpacpi_hotkey_task = NULL; 2579 } 2580 } 2581 2582 static void hotkey_poll_setup(const bool may_warn) 2583 { 2584 const u32 poll_driver_mask = hotkey_driver_mask & hotkey_source_mask; 2585 const u32 poll_user_mask = hotkey_user_mask & hotkey_source_mask; 2586 2587 lockdep_assert_held(&hotkey_mutex); 2588 2589 if (hotkey_poll_freq > 0 && 2590 (poll_driver_mask || 2591 (poll_user_mask && tpacpi_inputdev->users > 0))) { 2592 if (!tpacpi_hotkey_task) { 2593 tpacpi_hotkey_task = kthread_run(hotkey_kthread, 2594 NULL, TPACPI_NVRAM_KTHREAD_NAME); 2595 if (IS_ERR(tpacpi_hotkey_task)) { 2596 tpacpi_hotkey_task = NULL; 2597 pr_err("could not create kernel thread for hotkey polling\n"); 2598 } 2599 } 2600 } else { 2601 hotkey_poll_stop_sync(); 2602 if (may_warn && (poll_driver_mask || poll_user_mask) && 2603 hotkey_poll_freq == 0) { 2604 pr_notice("hot keys 0x%08x and/or events 0x%08x require polling, which is currently disabled\n", 2605 poll_user_mask, poll_driver_mask); 2606 } 2607 } 2608 } 2609 2610 static void hotkey_poll_setup_safe(const bool may_warn) 2611 { 2612 mutex_lock(&hotkey_mutex); 2613 hotkey_poll_setup(may_warn); 2614 mutex_unlock(&hotkey_mutex); 2615 } 2616 2617 static void hotkey_poll_set_freq(unsigned int freq) 2618 { 2619 lockdep_assert_held(&hotkey_mutex); 2620 2621 if (!freq) 2622 hotkey_poll_stop_sync(); 2623 2624 hotkey_poll_freq = freq; 2625 } 2626 2627 #else /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2628 2629 static void hotkey_poll_setup(const bool __unused) 2630 { 2631 } 2632 2633 static void hotkey_poll_setup_safe(const bool __unused) 2634 { 2635 } 2636 2637 static void hotkey_poll_stop_sync(void) 2638 { 2639 } 2640 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2641 2642 static int hotkey_inputdev_open(struct input_dev *dev) 2643 { 2644 switch (tpacpi_lifecycle) { 2645 case TPACPI_LIFE_INIT: 2646 case TPACPI_LIFE_RUNNING: 2647 hotkey_poll_setup_safe(false); 2648 return 0; 2649 case TPACPI_LIFE_EXITING: 2650 return -EBUSY; 2651 } 2652 2653 /* Should only happen if tpacpi_lifecycle is corrupt */ 2654 BUG(); 2655 return -EBUSY; 2656 } 2657 2658 static void hotkey_inputdev_close(struct input_dev *dev) 2659 { 2660 /* disable hotkey polling when possible */ 2661 if (tpacpi_lifecycle != TPACPI_LIFE_EXITING && 2662 !(hotkey_source_mask & hotkey_driver_mask)) 2663 hotkey_poll_setup_safe(false); 2664 } 2665 2666 /* sysfs hotkey enable ------------------------------------------------- */ 2667 static ssize_t hotkey_enable_show(struct device *dev, 2668 struct device_attribute *attr, 2669 char *buf) 2670 { 2671 int res, status; 2672 2673 printk_deprecated_attribute("hotkey_enable", 2674 "Hotkey reporting is always enabled"); 2675 2676 res = hotkey_status_get(&status); 2677 if (res) 2678 return res; 2679 2680 return sysfs_emit(buf, "%d\n", status); 2681 } 2682 2683 static ssize_t hotkey_enable_store(struct device *dev, 2684 struct device_attribute *attr, 2685 const char *buf, size_t count) 2686 { 2687 unsigned long t; 2688 2689 printk_deprecated_attribute("hotkey_enable", 2690 "Hotkeys can be disabled through hotkey_mask"); 2691 2692 if (parse_strtoul(buf, 1, &t)) 2693 return -EINVAL; 2694 2695 if (t == 0) 2696 return -EPERM; 2697 2698 return count; 2699 } 2700 2701 static DEVICE_ATTR_RW(hotkey_enable); 2702 2703 /* sysfs hotkey mask --------------------------------------------------- */ 2704 static ssize_t hotkey_mask_show(struct device *dev, 2705 struct device_attribute *attr, 2706 char *buf) 2707 { 2708 return sysfs_emit(buf, "0x%08x\n", hotkey_user_mask); 2709 } 2710 2711 static ssize_t hotkey_mask_store(struct device *dev, 2712 struct device_attribute *attr, 2713 const char *buf, size_t count) 2714 { 2715 unsigned long t; 2716 int res; 2717 2718 if (parse_strtoul(buf, 0xffffffffUL, &t)) 2719 return -EINVAL; 2720 2721 if (mutex_lock_killable(&hotkey_mutex)) 2722 return -ERESTARTSYS; 2723 2724 res = hotkey_user_mask_set(t); 2725 2726 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2727 hotkey_poll_setup(true); 2728 #endif 2729 2730 mutex_unlock(&hotkey_mutex); 2731 2732 tpacpi_disclose_usertask("hotkey_mask", "set to 0x%08lx\n", t); 2733 2734 return (res) ? res : count; 2735 } 2736 2737 static DEVICE_ATTR_RW(hotkey_mask); 2738 2739 /* sysfs hotkey bios_enabled ------------------------------------------- */ 2740 static ssize_t hotkey_bios_enabled_show(struct device *dev, 2741 struct device_attribute *attr, 2742 char *buf) 2743 { 2744 return sysfs_emit(buf, "0\n"); 2745 } 2746 2747 static DEVICE_ATTR_RO(hotkey_bios_enabled); 2748 2749 /* sysfs hotkey bios_mask ---------------------------------------------- */ 2750 static ssize_t hotkey_bios_mask_show(struct device *dev, 2751 struct device_attribute *attr, 2752 char *buf) 2753 { 2754 printk_deprecated_attribute("hotkey_bios_mask", 2755 "This attribute is useless."); 2756 return sysfs_emit(buf, "0x%08x\n", hotkey_orig_mask); 2757 } 2758 2759 static DEVICE_ATTR_RO(hotkey_bios_mask); 2760 2761 /* sysfs hotkey all_mask ----------------------------------------------- */ 2762 static ssize_t hotkey_all_mask_show(struct device *dev, 2763 struct device_attribute *attr, 2764 char *buf) 2765 { 2766 return sysfs_emit(buf, "0x%08x\n", 2767 hotkey_all_mask | hotkey_source_mask); 2768 } 2769 2770 static DEVICE_ATTR_RO(hotkey_all_mask); 2771 2772 /* sysfs hotkey all_mask ----------------------------------------------- */ 2773 static ssize_t hotkey_adaptive_all_mask_show(struct device *dev, 2774 struct device_attribute *attr, 2775 char *buf) 2776 { 2777 return sysfs_emit(buf, "0x%08x\n", 2778 hotkey_adaptive_all_mask | hotkey_source_mask); 2779 } 2780 2781 static DEVICE_ATTR_RO(hotkey_adaptive_all_mask); 2782 2783 /* sysfs hotkey recommended_mask --------------------------------------- */ 2784 static ssize_t hotkey_recommended_mask_show(struct device *dev, 2785 struct device_attribute *attr, 2786 char *buf) 2787 { 2788 return sysfs_emit(buf, "0x%08x\n", 2789 (hotkey_all_mask | hotkey_source_mask) 2790 & ~hotkey_reserved_mask); 2791 } 2792 2793 static DEVICE_ATTR_RO(hotkey_recommended_mask); 2794 2795 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 2796 2797 /* sysfs hotkey hotkey_source_mask ------------------------------------- */ 2798 static ssize_t hotkey_source_mask_show(struct device *dev, 2799 struct device_attribute *attr, 2800 char *buf) 2801 { 2802 return sysfs_emit(buf, "0x%08x\n", hotkey_source_mask); 2803 } 2804 2805 static ssize_t hotkey_source_mask_store(struct device *dev, 2806 struct device_attribute *attr, 2807 const char *buf, size_t count) 2808 { 2809 unsigned long t; 2810 u32 r_ev; 2811 int rc; 2812 2813 if (parse_strtoul(buf, 0xffffffffUL, &t) || 2814 ((t & ~TPACPI_HKEY_NVRAM_KNOWN_MASK) != 0)) 2815 return -EINVAL; 2816 2817 if (mutex_lock_killable(&hotkey_mutex)) 2818 return -ERESTARTSYS; 2819 2820 HOTKEY_CONFIG_CRITICAL_START 2821 hotkey_source_mask = t; 2822 HOTKEY_CONFIG_CRITICAL_END 2823 2824 rc = hotkey_mask_set((hotkey_user_mask | hotkey_driver_mask) & 2825 ~hotkey_source_mask); 2826 hotkey_poll_setup(true); 2827 2828 /* check if events needed by the driver got disabled */ 2829 r_ev = hotkey_driver_mask & ~(hotkey_acpi_mask & hotkey_all_mask) 2830 & ~hotkey_source_mask & TPACPI_HKEY_NVRAM_KNOWN_MASK; 2831 2832 mutex_unlock(&hotkey_mutex); 2833 2834 if (rc < 0) 2835 pr_err("hotkey_source_mask: failed to update the firmware event mask!\n"); 2836 2837 if (r_ev) 2838 pr_notice("hotkey_source_mask: some important events were disabled: 0x%04x\n", 2839 r_ev); 2840 2841 tpacpi_disclose_usertask("hotkey_source_mask", "set to 0x%08lx\n", t); 2842 2843 return (rc < 0) ? rc : count; 2844 } 2845 2846 static DEVICE_ATTR_RW(hotkey_source_mask); 2847 2848 /* sysfs hotkey hotkey_poll_freq --------------------------------------- */ 2849 static ssize_t hotkey_poll_freq_show(struct device *dev, 2850 struct device_attribute *attr, 2851 char *buf) 2852 { 2853 return sysfs_emit(buf, "%d\n", hotkey_poll_freq); 2854 } 2855 2856 static ssize_t hotkey_poll_freq_store(struct device *dev, 2857 struct device_attribute *attr, 2858 const char *buf, size_t count) 2859 { 2860 unsigned long t; 2861 2862 if (parse_strtoul(buf, 25, &t)) 2863 return -EINVAL; 2864 2865 if (mutex_lock_killable(&hotkey_mutex)) 2866 return -ERESTARTSYS; 2867 2868 hotkey_poll_set_freq(t); 2869 hotkey_poll_setup(true); 2870 2871 mutex_unlock(&hotkey_mutex); 2872 2873 tpacpi_disclose_usertask("hotkey_poll_freq", "set to %lu\n", t); 2874 2875 return count; 2876 } 2877 2878 static DEVICE_ATTR_RW(hotkey_poll_freq); 2879 2880 #endif /* CONFIG_THINKPAD_ACPI_HOTKEY_POLL */ 2881 2882 /* sysfs hotkey radio_sw (pollable) ------------------------------------ */ 2883 static ssize_t hotkey_radio_sw_show(struct device *dev, 2884 struct device_attribute *attr, 2885 char *buf) 2886 { 2887 int res; 2888 res = hotkey_get_wlsw(); 2889 if (res < 0) 2890 return res; 2891 2892 /* Opportunistic update */ 2893 tpacpi_rfk_update_hwblock_state((res == TPACPI_RFK_RADIO_OFF)); 2894 2895 return sysfs_emit(buf, "%d\n", 2896 (res == TPACPI_RFK_RADIO_OFF) ? 0 : 1); 2897 } 2898 2899 static DEVICE_ATTR_RO(hotkey_radio_sw); 2900 2901 static void hotkey_radio_sw_notify_change(void) 2902 { 2903 if (tp_features.hotkey_wlsw) 2904 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2905 "hotkey_radio_sw"); 2906 } 2907 2908 /* sysfs hotkey tablet mode (pollable) --------------------------------- */ 2909 static ssize_t hotkey_tablet_mode_show(struct device *dev, 2910 struct device_attribute *attr, 2911 char *buf) 2912 { 2913 int res, s; 2914 res = hotkey_get_tablet_mode(&s); 2915 if (res < 0) 2916 return res; 2917 2918 return sysfs_emit(buf, "%d\n", !!s); 2919 } 2920 2921 static DEVICE_ATTR_RO(hotkey_tablet_mode); 2922 2923 static void hotkey_tablet_mode_notify_change(void) 2924 { 2925 if (tp_features.hotkey_tablet) 2926 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2927 "hotkey_tablet_mode"); 2928 } 2929 2930 /* sysfs wakeup reason (pollable) -------------------------------------- */ 2931 static ssize_t hotkey_wakeup_reason_show(struct device *dev, 2932 struct device_attribute *attr, 2933 char *buf) 2934 { 2935 return sysfs_emit(buf, "%d\n", hotkey_wakeup_reason); 2936 } 2937 2938 static DEVICE_ATTR(wakeup_reason, S_IRUGO, hotkey_wakeup_reason_show, NULL); 2939 2940 static void hotkey_wakeup_reason_notify_change(void) 2941 { 2942 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2943 "wakeup_reason"); 2944 } 2945 2946 /* sysfs wakeup hotunplug_complete (pollable) -------------------------- */ 2947 static ssize_t hotkey_wakeup_hotunplug_complete_show(struct device *dev, 2948 struct device_attribute *attr, 2949 char *buf) 2950 { 2951 return sysfs_emit(buf, "%d\n", hotkey_autosleep_ack); 2952 } 2953 2954 static DEVICE_ATTR(wakeup_hotunplug_complete, S_IRUGO, 2955 hotkey_wakeup_hotunplug_complete_show, NULL); 2956 2957 static void hotkey_wakeup_hotunplug_complete_notify_change(void) 2958 { 2959 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, 2960 "wakeup_hotunplug_complete"); 2961 } 2962 2963 /* sysfs adaptive kbd mode --------------------------------------------- */ 2964 2965 static int adaptive_keyboard_get_mode(void); 2966 static int adaptive_keyboard_set_mode(int new_mode); 2967 2968 enum ADAPTIVE_KEY_MODE { 2969 HOME_MODE, 2970 WEB_BROWSER_MODE, 2971 WEB_CONFERENCE_MODE, 2972 FUNCTION_MODE, 2973 LAYFLAT_MODE 2974 }; 2975 2976 static ssize_t adaptive_kbd_mode_show(struct device *dev, 2977 struct device_attribute *attr, 2978 char *buf) 2979 { 2980 int current_mode; 2981 2982 current_mode = adaptive_keyboard_get_mode(); 2983 if (current_mode < 0) 2984 return current_mode; 2985 2986 return sysfs_emit(buf, "%d\n", current_mode); 2987 } 2988 2989 static ssize_t adaptive_kbd_mode_store(struct device *dev, 2990 struct device_attribute *attr, 2991 const char *buf, size_t count) 2992 { 2993 unsigned long t; 2994 int res; 2995 2996 if (parse_strtoul(buf, LAYFLAT_MODE, &t)) 2997 return -EINVAL; 2998 2999 res = adaptive_keyboard_set_mode(t); 3000 return (res < 0) ? res : count; 3001 } 3002 3003 static DEVICE_ATTR_RW(adaptive_kbd_mode); 3004 3005 static struct attribute *adaptive_kbd_attributes[] = { 3006 &dev_attr_adaptive_kbd_mode.attr, 3007 NULL 3008 }; 3009 3010 static umode_t hadaptive_kbd_attr_is_visible(struct kobject *kobj, 3011 struct attribute *attr, int n) 3012 { 3013 return tp_features.has_adaptive_kbd ? attr->mode : 0; 3014 } 3015 3016 static const struct attribute_group adaptive_kbd_attr_group = { 3017 .is_visible = hadaptive_kbd_attr_is_visible, 3018 .attrs = adaptive_kbd_attributes, 3019 }; 3020 3021 /* --------------------------------------------------------------------- */ 3022 3023 static struct attribute *hotkey_attributes[] = { 3024 &dev_attr_hotkey_enable.attr, 3025 &dev_attr_hotkey_bios_enabled.attr, 3026 &dev_attr_hotkey_bios_mask.attr, 3027 &dev_attr_wakeup_reason.attr, 3028 &dev_attr_wakeup_hotunplug_complete.attr, 3029 &dev_attr_hotkey_mask.attr, 3030 &dev_attr_hotkey_all_mask.attr, 3031 &dev_attr_hotkey_adaptive_all_mask.attr, 3032 &dev_attr_hotkey_recommended_mask.attr, 3033 &dev_attr_hotkey_tablet_mode.attr, 3034 &dev_attr_hotkey_radio_sw.attr, 3035 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3036 &dev_attr_hotkey_source_mask.attr, 3037 &dev_attr_hotkey_poll_freq.attr, 3038 #endif 3039 NULL 3040 }; 3041 3042 static umode_t hotkey_attr_is_visible(struct kobject *kobj, 3043 struct attribute *attr, int n) 3044 { 3045 if (attr == &dev_attr_hotkey_tablet_mode.attr) { 3046 if (!tp_features.hotkey_tablet) 3047 return 0; 3048 } else if (attr == &dev_attr_hotkey_radio_sw.attr) { 3049 if (!tp_features.hotkey_wlsw) 3050 return 0; 3051 } 3052 3053 return attr->mode; 3054 } 3055 3056 static const struct attribute_group hotkey_attr_group = { 3057 .is_visible = hotkey_attr_is_visible, 3058 .attrs = hotkey_attributes, 3059 }; 3060 3061 /* 3062 * Sync both the hw and sw blocking state of all switches 3063 */ 3064 static void tpacpi_send_radiosw_update(void) 3065 { 3066 int wlsw; 3067 3068 /* 3069 * We must sync all rfkill controllers *before* issuing any 3070 * rfkill input events, or we will race the rfkill core input 3071 * handler. 3072 * 3073 * tpacpi_inputdev_send_mutex works as a synchronization point 3074 * for the above. 3075 * 3076 * We optimize to avoid numerous calls to hotkey_get_wlsw. 3077 */ 3078 3079 wlsw = hotkey_get_wlsw(); 3080 3081 /* Sync hw blocking state first if it is hw-blocked */ 3082 if (wlsw == TPACPI_RFK_RADIO_OFF) 3083 tpacpi_rfk_update_hwblock_state(true); 3084 3085 /* Sync hw blocking state last if it is hw-unblocked */ 3086 if (wlsw == TPACPI_RFK_RADIO_ON) 3087 tpacpi_rfk_update_hwblock_state(false); 3088 3089 /* Issue rfkill input event for WLSW switch */ 3090 if (!(wlsw < 0)) { 3091 mutex_lock(&tpacpi_inputdev_send_mutex); 3092 3093 input_report_switch(tpacpi_inputdev, 3094 SW_RFKILL_ALL, (wlsw > 0)); 3095 input_sync(tpacpi_inputdev); 3096 3097 mutex_unlock(&tpacpi_inputdev_send_mutex); 3098 } 3099 3100 /* 3101 * this can be unconditional, as we will poll state again 3102 * if userspace uses the notify to read data 3103 */ 3104 hotkey_radio_sw_notify_change(); 3105 } 3106 3107 static void hotkey_exit(void) 3108 { 3109 mutex_lock(&hotkey_mutex); 3110 hotkey_poll_stop_sync(); 3111 dbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_HKEY, 3112 "restoring original HKEY status and mask\n"); 3113 /* yes, there is a bitwise or below, we want the 3114 * functions to be called even if one of them fail */ 3115 if (((tp_features.hotkey_mask && 3116 hotkey_mask_set(hotkey_orig_mask)) | 3117 hotkey_status_set(false)) != 0) 3118 pr_err("failed to restore hot key mask to BIOS defaults\n"); 3119 3120 mutex_unlock(&hotkey_mutex); 3121 } 3122 3123 /* 3124 * HKEY quirks: 3125 * TPACPI_HK_Q_INIMASK: Supports FN+F3,FN+F4,FN+F12 3126 */ 3127 3128 #define TPACPI_HK_Q_INIMASK 0x0001 3129 3130 static const struct tpacpi_quirk tpacpi_hotkey_qtable[] __initconst = { 3131 TPACPI_Q_IBM('I', 'H', TPACPI_HK_Q_INIMASK), /* 600E */ 3132 TPACPI_Q_IBM('I', 'N', TPACPI_HK_Q_INIMASK), /* 600E */ 3133 TPACPI_Q_IBM('I', 'D', TPACPI_HK_Q_INIMASK), /* 770, 770E, 770ED */ 3134 TPACPI_Q_IBM('I', 'W', TPACPI_HK_Q_INIMASK), /* A20m */ 3135 TPACPI_Q_IBM('I', 'V', TPACPI_HK_Q_INIMASK), /* A20p */ 3136 TPACPI_Q_IBM('1', '0', TPACPI_HK_Q_INIMASK), /* A21e, A22e */ 3137 TPACPI_Q_IBM('K', 'U', TPACPI_HK_Q_INIMASK), /* A21e */ 3138 TPACPI_Q_IBM('K', 'X', TPACPI_HK_Q_INIMASK), /* A21m, A22m */ 3139 TPACPI_Q_IBM('K', 'Y', TPACPI_HK_Q_INIMASK), /* A21p, A22p */ 3140 TPACPI_Q_IBM('1', 'B', TPACPI_HK_Q_INIMASK), /* A22e */ 3141 TPACPI_Q_IBM('1', '3', TPACPI_HK_Q_INIMASK), /* A22m */ 3142 TPACPI_Q_IBM('1', 'E', TPACPI_HK_Q_INIMASK), /* A30/p (0) */ 3143 TPACPI_Q_IBM('1', 'C', TPACPI_HK_Q_INIMASK), /* R30 */ 3144 TPACPI_Q_IBM('1', 'F', TPACPI_HK_Q_INIMASK), /* R31 */ 3145 TPACPI_Q_IBM('I', 'Y', TPACPI_HK_Q_INIMASK), /* T20 */ 3146 TPACPI_Q_IBM('K', 'Z', TPACPI_HK_Q_INIMASK), /* T21 */ 3147 TPACPI_Q_IBM('1', '6', TPACPI_HK_Q_INIMASK), /* T22 */ 3148 TPACPI_Q_IBM('I', 'Z', TPACPI_HK_Q_INIMASK), /* X20, X21 */ 3149 TPACPI_Q_IBM('1', 'D', TPACPI_HK_Q_INIMASK), /* X22, X23, X24 */ 3150 }; 3151 3152 static int hotkey_init_tablet_mode(void) 3153 { 3154 int in_tablet_mode = 0, res; 3155 char *type = NULL; 3156 3157 if (acpi_evalf(hkey_handle, &res, "GMMS", "qdd", 0)) { 3158 int has_tablet_mode; 3159 3160 in_tablet_mode = hotkey_gmms_get_tablet_mode(res, 3161 &has_tablet_mode); 3162 /* 3163 * The Yoga 11e series has 2 accelerometers described by a 3164 * BOSC0200 ACPI node. This setup relies on a Windows service 3165 * which calls special ACPI methods on this node to report 3166 * the laptop/tent/tablet mode to the EC. The bmc150 iio driver 3167 * does not support this, so skip the hotkey on these models. 3168 */ 3169 if (has_tablet_mode && !dual_accel_detect()) 3170 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_GMMS; 3171 type = "GMMS"; 3172 } else if (acpi_evalf(hkey_handle, &res, "MHKG", "qd")) { 3173 /* For X41t, X60t, X61t Tablets... */ 3174 tp_features.hotkey_tablet = TP_HOTKEY_TABLET_USES_MHKG; 3175 in_tablet_mode = !!(res & TP_HOTKEY_TABLET_MASK); 3176 type = "MHKG"; 3177 } 3178 3179 if (!tp_features.hotkey_tablet) 3180 return 0; 3181 3182 pr_info("Tablet mode switch found (type: %s), currently in %s mode\n", 3183 type, in_tablet_mode ? "tablet" : "laptop"); 3184 3185 return in_tablet_mode; 3186 } 3187 3188 static const struct key_entry keymap_ibm[] __initconst = { 3189 /* Original hotkey mappings translated scancodes 0x00 - 0x1f */ 3190 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF1, { KEY_FN_F1 } }, 3191 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF2, { KEY_BATTERY } }, 3192 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF3, { KEY_COFFEE } }, 3193 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF4, { KEY_SLEEP } }, 3194 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF5, { KEY_WLAN } }, 3195 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF6, { KEY_FN_F6 } }, 3196 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF7, { KEY_SWITCHVIDEOMODE } }, 3197 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF8, { KEY_FN_F8 } }, 3198 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF9, { KEY_FN_F9 } }, 3199 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF10, { KEY_FN_F10 } }, 3200 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF11, { KEY_FN_F11 } }, 3201 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF12, { KEY_SUSPEND } }, 3202 /* Brightness: firmware always reacts, suppressed through hotkey_reserved_mask. */ 3203 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNHOME, { KEY_BRIGHTNESSUP } }, 3204 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNEND, { KEY_BRIGHTNESSDOWN } }, 3205 /* Thinklight: firmware always reacts, suppressed through hotkey_reserved_mask. */ 3206 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNPAGEUP, { KEY_KBDILLUMTOGGLE } }, 3207 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNSPACE, { KEY_ZOOM } }, 3208 /* 3209 * Volume: firmware always reacts and reprograms the built-in *extra* mixer. 3210 * Suppressed by default through hotkey_reserved_mask. 3211 */ 3212 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEUP, { KEY_VOLUMEUP } }, 3213 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, { KEY_VOLUMEDOWN } }, 3214 { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE, { KEY_MUTE } }, 3215 { KE_KEY, TP_ACPI_HOTKEYSCAN_THINKPAD, { KEY_VENDOR } }, 3216 { KE_END } 3217 }; 3218 3219 static const struct key_entry keymap_lenovo[] __initconst = { 3220 /* Original hotkey mappings translated scancodes 0x00 - 0x1f */ 3221 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF1, { KEY_FN_F1 } }, 3222 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF2, { KEY_COFFEE } }, 3223 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF3, { KEY_BATTERY } }, 3224 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF4, { KEY_SLEEP } }, 3225 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF5, { KEY_WLAN } }, 3226 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF6, { KEY_CAMERA, } }, 3227 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF7, { KEY_SWITCHVIDEOMODE } }, 3228 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF8, { KEY_FN_F8 } }, 3229 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF9, { KEY_FN_F9 } }, 3230 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF10, { KEY_FN_F10 } }, 3231 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF11, { KEY_FN_F11 } }, 3232 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNF12, { KEY_SUSPEND } }, 3233 /* 3234 * These should be enabled --only-- when ACPI video is disabled and 3235 * are handled in a special way by the init code. 3236 */ 3237 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNHOME, { KEY_BRIGHTNESSUP } }, 3238 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNEND, { KEY_BRIGHTNESSDOWN } }, 3239 /* Suppressed by default through hotkey_reserved_mask. */ 3240 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNPAGEUP, { KEY_KBDILLUMTOGGLE } }, 3241 { KE_KEY, TP_ACPI_HOTKEYSCAN_FNSPACE, { KEY_ZOOM } }, 3242 /* 3243 * Volume: z60/z61, T60 (BIOS version?): firmware always reacts and 3244 * reprograms the built-in *extra* mixer. 3245 * T60?, T61, R60?, R61: firmware and EC tries to send these over 3246 * the regular keyboard (not through tpacpi). There are still weird bugs 3247 * re. MUTE. May cause the BIOS to interfere with the HDA mixer. 3248 * Suppressed by default through hotkey_reserved_mask. 3249 */ 3250 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEUP, { KEY_VOLUMEUP } }, 3251 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOLUMEDOWN, { KEY_VOLUMEDOWN } }, 3252 { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE, { KEY_MUTE } }, 3253 { KE_KEY, TP_ACPI_HOTKEYSCAN_THINKPAD, { KEY_VENDOR } }, 3254 { KE_KEY, TP_ACPI_HOTKEYSCAN_MICMUTE, { KEY_MICMUTE } }, 3255 { KE_KEY, TP_ACPI_HOTKEYSCAN_CONFIG, { KEY_CONFIG } }, 3256 { KE_KEY, TP_ACPI_HOTKEYSCAN_SEARCH, { KEY_SEARCH } }, 3257 { KE_KEY, TP_ACPI_HOTKEYSCAN_SCALE, { KEY_SCALE } }, 3258 { KE_KEY, TP_ACPI_HOTKEYSCAN_FILE, { KEY_FILE } }, 3259 /* Adaptive keyboard mappings for Carbon X1 2014 translated scancodes 0x20 - 0x33 */ 3260 { KE_KEY, TP_ACPI_HOTKEYSCAN_MUTE2, { KEY_RESERVED } }, 3261 { KE_KEY, TP_ACPI_HOTKEYSCAN_BRIGHTNESS_ZERO, { KEY_BRIGHTNESS_MIN } }, 3262 { KE_KEY, TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL, { KEY_SELECTIVE_SCREENSHOT } }, 3263 { KE_KEY, TP_ACPI_HOTKEYSCAN_CLOUD, { KEY_XFER } }, 3264 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK9, { KEY_RESERVED } }, 3265 { KE_KEY, TP_ACPI_HOTKEYSCAN_VOICE, { KEY_VOICECOMMAND } }, 3266 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK10, { KEY_RESERVED } }, 3267 { KE_KEY, TP_ACPI_HOTKEYSCAN_GESTURES, { KEY_RESERVED } }, 3268 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK11, { KEY_RESERVED } }, 3269 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK12, { KEY_RESERVED } }, 3270 { KE_KEY, TP_ACPI_HOTKEYSCAN_UNK13, { KEY_RESERVED } }, 3271 { KE_KEY, TP_ACPI_HOTKEYSCAN_CONFIG2, { KEY_CONFIG } }, 3272 { KE_KEY, TP_ACPI_HOTKEYSCAN_NEW_TAB, { KEY_RESERVED } }, 3273 { KE_KEY, TP_ACPI_HOTKEYSCAN_RELOAD, { KEY_REFRESH } }, 3274 { KE_KEY, TP_ACPI_HOTKEYSCAN_BACK, { KEY_BACK } }, 3275 { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_DOWN, { KEY_RESERVED } }, 3276 { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_UP, { KEY_RESERVED } }, 3277 { KE_KEY, TP_ACPI_HOTKEYSCAN_MIC_CANCELLATION, { KEY_RESERVED } }, 3278 { KE_KEY, TP_ACPI_HOTKEYSCAN_CAMERA_MODE, { KEY_RESERVED } }, 3279 { KE_KEY, TP_ACPI_HOTKEYSCAN_ROTATE_DISPLAY, { KEY_RESERVED } }, 3280 /* Extended hotkeys mappings translated scancodes 0x34 - 0x4d */ 3281 { KE_KEY, TP_ACPI_HOTKEYSCAN_STAR, { KEY_BOOKMARKS } }, 3282 { KE_KEY, TP_ACPI_HOTKEYSCAN_CLIPPING_TOOL2, { KEY_SELECTIVE_SCREENSHOT } }, 3283 { KE_KEY, TP_ACPI_HOTKEYSCAN_CALCULATOR, { KEY_CALC } }, 3284 { KE_KEY, TP_ACPI_HOTKEYSCAN_BLUETOOTH, { KEY_BLUETOOTH } }, 3285 { KE_KEY, TP_ACPI_HOTKEYSCAN_KEYBOARD, { KEY_KEYBOARD } }, 3286 /* Used by "Lenovo Quick Clean" */ 3287 { KE_KEY, TP_ACPI_HOTKEYSCAN_FN_RIGHT_SHIFT, { KEY_FN_RIGHT_SHIFT } }, 3288 { KE_KEY, TP_ACPI_HOTKEYSCAN_NOTIFICATION_CENTER, { KEY_NOTIFICATION_CENTER } }, 3289 { KE_KEY, TP_ACPI_HOTKEYSCAN_PICKUP_PHONE, { KEY_PICKUP_PHONE } }, 3290 { KE_KEY, TP_ACPI_HOTKEYSCAN_HANGUP_PHONE, { KEY_HANGUP_PHONE } }, 3291 /* 3292 * All mapping below are for raw untranslated hkey event codes mapped directly 3293 * after switching to sparse keymap support. The mappings above use translated 3294 * scancodes to preserve uAPI compatibility, see tpacpi_input_send_key(). 3295 */ 3296 { KE_KEY, 0x131d, { KEY_VENDOR } }, /* System debug info, similar to old ThinkPad key */ 3297 { KE_KEY, 0x1320, { KEY_LINK_PHONE } }, 3298 { KE_KEY, TP_HKEY_EV_TRACK_DOUBLETAP /* 0x8036 */, { KEY_PROG4 } }, 3299 { KE_END } 3300 }; 3301 3302 static int __init hotkey_init(struct ibm_init_struct *iibm) 3303 { 3304 enum keymap_index { 3305 TPACPI_KEYMAP_IBM_GENERIC = 0, 3306 TPACPI_KEYMAP_LENOVO_GENERIC, 3307 }; 3308 3309 static const struct tpacpi_quirk tpacpi_keymap_qtable[] __initconst = { 3310 /* Generic maps (fallback) */ 3311 { 3312 .vendor = PCI_VENDOR_ID_IBM, 3313 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3314 .quirks = TPACPI_KEYMAP_IBM_GENERIC, 3315 }, 3316 { 3317 .vendor = PCI_VENDOR_ID_LENOVO, 3318 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 3319 .quirks = TPACPI_KEYMAP_LENOVO_GENERIC, 3320 }, 3321 }; 3322 3323 unsigned long keymap_id, quirks; 3324 const struct key_entry *keymap; 3325 bool radiosw_state = false; 3326 bool tabletsw_state = false; 3327 int hkeyv, res, status, camera_shutter_state; 3328 3329 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3330 "initializing hotkey subdriver\n"); 3331 3332 BUG_ON(!tpacpi_inputdev); 3333 BUG_ON(tpacpi_inputdev->open != NULL || 3334 tpacpi_inputdev->close != NULL); 3335 3336 TPACPI_ACPIHANDLE_INIT(hkey); 3337 mutex_init(&hotkey_mutex); 3338 3339 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3340 mutex_init(&hotkey_thread_data_mutex); 3341 #endif 3342 3343 /* hotkey not supported on 570 */ 3344 tp_features.hotkey = hkey_handle != NULL; 3345 3346 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3347 "hotkeys are %s\n", 3348 str_supported(tp_features.hotkey)); 3349 3350 if (!tp_features.hotkey) 3351 return -ENODEV; 3352 3353 quirks = tpacpi_check_quirks(tpacpi_hotkey_qtable, 3354 ARRAY_SIZE(tpacpi_hotkey_qtable)); 3355 3356 tpacpi_disable_brightness_delay(); 3357 3358 /* mask not supported on 600e/x, 770e, 770x, A21e, A2xm/p, 3359 A30, R30, R31, T20-22, X20-21, X22-24. Detected by checking 3360 for HKEY interface version 0x100 */ 3361 if (acpi_evalf(hkey_handle, &hkeyv, "MHKV", "qd")) { 3362 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3363 "firmware HKEY interface version: 0x%x\n", 3364 hkeyv); 3365 3366 switch (hkeyv >> 8) { 3367 case 1: 3368 /* 3369 * MHKV 0x100 in A31, R40, R40e, 3370 * T4x, X31, and later 3371 */ 3372 3373 /* Paranoia check AND init hotkey_all_mask */ 3374 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3375 "MHKA", "qd")) { 3376 pr_err("missing MHKA handler, please report this to %s\n", 3377 TPACPI_MAIL); 3378 /* Fallback: pre-init for FN+F3,F4,F12 */ 3379 hotkey_all_mask = 0x080cU; 3380 } else { 3381 tp_features.hotkey_mask = 1; 3382 } 3383 break; 3384 3385 case 2: 3386 /* 3387 * MHKV 0x200 in X1, T460s, X260, T560, X1 Tablet (2016) 3388 */ 3389 3390 /* Paranoia check AND init hotkey_all_mask */ 3391 if (!acpi_evalf(hkey_handle, &hotkey_all_mask, 3392 "MHKA", "dd", 1)) { 3393 pr_err("missing MHKA handler, please report this to %s\n", 3394 TPACPI_MAIL); 3395 /* Fallback: pre-init for FN+F3,F4,F12 */ 3396 hotkey_all_mask = 0x080cU; 3397 } else { 3398 tp_features.hotkey_mask = 1; 3399 } 3400 3401 /* 3402 * Check if we have an adaptive keyboard, like on the 3403 * Lenovo Carbon X1 2014 (2nd Gen). 3404 */ 3405 if (acpi_evalf(hkey_handle, &hotkey_adaptive_all_mask, 3406 "MHKA", "dd", 2)) { 3407 if (hotkey_adaptive_all_mask != 0) 3408 tp_features.has_adaptive_kbd = true; 3409 } else { 3410 tp_features.has_adaptive_kbd = false; 3411 hotkey_adaptive_all_mask = 0x0U; 3412 } 3413 break; 3414 3415 default: 3416 pr_err("unknown version of the HKEY interface: 0x%x\n", 3417 hkeyv); 3418 pr_err("please report this to %s\n", TPACPI_MAIL); 3419 break; 3420 } 3421 } 3422 3423 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3424 "hotkey masks are %s\n", 3425 str_supported(tp_features.hotkey_mask)); 3426 3427 /* Init hotkey_all_mask if not initialized yet */ 3428 if (!tp_features.hotkey_mask && !hotkey_all_mask && 3429 (quirks & TPACPI_HK_Q_INIMASK)) 3430 hotkey_all_mask = 0x080cU; /* FN+F12, FN+F4, FN+F3 */ 3431 3432 /* Init hotkey_acpi_mask and hotkey_orig_mask */ 3433 if (tp_features.hotkey_mask) { 3434 /* hotkey_source_mask *must* be zero for 3435 * the first hotkey_mask_get to return hotkey_orig_mask */ 3436 mutex_lock(&hotkey_mutex); 3437 res = hotkey_mask_get(); 3438 mutex_unlock(&hotkey_mutex); 3439 if (res) 3440 return res; 3441 3442 hotkey_orig_mask = hotkey_acpi_mask; 3443 } else { 3444 hotkey_orig_mask = hotkey_all_mask; 3445 hotkey_acpi_mask = hotkey_all_mask; 3446 } 3447 3448 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 3449 if (dbg_wlswemul) { 3450 tp_features.hotkey_wlsw = 1; 3451 radiosw_state = !!tpacpi_wlsw_emulstate; 3452 pr_info("radio switch emulation enabled\n"); 3453 } else 3454 #endif 3455 /* Not all thinkpads have a hardware radio switch */ 3456 if (acpi_evalf(hkey_handle, &status, "WLSW", "qd")) { 3457 tp_features.hotkey_wlsw = 1; 3458 radiosw_state = !!status; 3459 pr_info("radio switch found; radios are %s\n", str_enabled_disabled(status & BIT(0))); 3460 } 3461 3462 tabletsw_state = hotkey_init_tablet_mode(); 3463 3464 /* Set up key map */ 3465 keymap_id = tpacpi_check_quirks(tpacpi_keymap_qtable, 3466 ARRAY_SIZE(tpacpi_keymap_qtable)); 3467 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3468 "using keymap number %lu\n", keymap_id); 3469 3470 /* Keys which should be reserved on both IBM and Lenovo models */ 3471 hotkey_reserved_mask = TP_ACPI_HKEY_KBD_LIGHT_MASK | 3472 TP_ACPI_HKEY_VOLUP_MASK | 3473 TP_ACPI_HKEY_VOLDWN_MASK | 3474 TP_ACPI_HKEY_MUTE_MASK; 3475 /* 3476 * Reserve brightness up/down unconditionally on IBM models, on Lenovo 3477 * models these are disabled based on acpi_video_get_backlight_type(). 3478 */ 3479 if (keymap_id == TPACPI_KEYMAP_IBM_GENERIC) { 3480 hotkey_reserved_mask |= TP_ACPI_HKEY_BRGHTUP_MASK | 3481 TP_ACPI_HKEY_BRGHTDWN_MASK; 3482 keymap = keymap_ibm; 3483 } else { 3484 keymap = keymap_lenovo; 3485 } 3486 3487 res = sparse_keymap_setup(tpacpi_inputdev, keymap, NULL); 3488 if (res) 3489 return res; 3490 3491 camera_shutter_state = get_camera_shutter(); 3492 if (camera_shutter_state >= 0) { 3493 input_set_capability(tpacpi_inputdev, EV_SW, SW_CAMERA_LENS_COVER); 3494 input_report_switch(tpacpi_inputdev, SW_CAMERA_LENS_COVER, camera_shutter_state); 3495 } 3496 3497 if (tp_features.hotkey_wlsw) { 3498 input_set_capability(tpacpi_inputdev, EV_SW, SW_RFKILL_ALL); 3499 input_report_switch(tpacpi_inputdev, 3500 SW_RFKILL_ALL, radiosw_state); 3501 } 3502 if (tp_features.hotkey_tablet) { 3503 input_set_capability(tpacpi_inputdev, EV_SW, SW_TABLET_MODE); 3504 input_report_switch(tpacpi_inputdev, 3505 SW_TABLET_MODE, tabletsw_state); 3506 } 3507 3508 /* Do not issue duplicate brightness change events to 3509 * userspace. tpacpi_detect_brightness_capabilities() must have 3510 * been called before this point */ 3511 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 3512 pr_info("This ThinkPad has standard ACPI backlight brightness control, supported by the ACPI video driver\n"); 3513 pr_notice("Disabling thinkpad-acpi brightness events by default...\n"); 3514 3515 /* Disable brightness up/down on Lenovo thinkpads when 3516 * ACPI is handling them, otherwise it is plain impossible 3517 * for userspace to do something even remotely sane */ 3518 hotkey_reserved_mask |= TP_ACPI_HKEY_BRGHTUP_MASK | 3519 TP_ACPI_HKEY_BRGHTDWN_MASK; 3520 } 3521 3522 #ifdef CONFIG_THINKPAD_ACPI_HOTKEY_POLL 3523 hotkey_source_mask = TPACPI_HKEY_NVRAM_GOOD_MASK 3524 & ~hotkey_all_mask 3525 & ~hotkey_reserved_mask; 3526 3527 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3528 "hotkey source mask 0x%08x, polling freq %u\n", 3529 hotkey_source_mask, hotkey_poll_freq); 3530 #endif 3531 3532 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3533 "enabling firmware HKEY event interface...\n"); 3534 res = hotkey_status_set(true); 3535 if (res) { 3536 hotkey_exit(); 3537 return res; 3538 } 3539 mutex_lock(&hotkey_mutex); 3540 res = hotkey_mask_set(((hotkey_all_mask & ~hotkey_reserved_mask) 3541 | hotkey_driver_mask) 3542 & ~hotkey_source_mask); 3543 mutex_unlock(&hotkey_mutex); 3544 if (res < 0 && res != -ENXIO) { 3545 hotkey_exit(); 3546 return res; 3547 } 3548 hotkey_user_mask = (hotkey_acpi_mask | hotkey_source_mask) 3549 & ~hotkey_reserved_mask; 3550 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_HKEY, 3551 "initial masks: user=0x%08x, fw=0x%08x, poll=0x%08x\n", 3552 hotkey_user_mask, hotkey_acpi_mask, hotkey_source_mask); 3553 3554 tpacpi_inputdev->open = &hotkey_inputdev_open; 3555 tpacpi_inputdev->close = &hotkey_inputdev_close; 3556 3557 hotkey_poll_setup_safe(true); 3558 3559 /* Enable doubletap by default */ 3560 tp_features.trackpoint_doubletap = 1; 3561 3562 return 0; 3563 } 3564 3565 /* Thinkpad X1 Carbon support 5 modes including Home mode, Web browser 3566 * mode, Web conference mode, Function mode and Lay-flat mode. 3567 * We support Home mode and Function mode currently. 3568 * 3569 * Will consider support rest of modes in future. 3570 * 3571 */ 3572 static const int adaptive_keyboard_modes[] = { 3573 HOME_MODE, 3574 /* WEB_BROWSER_MODE = 2, 3575 WEB_CONFERENCE_MODE = 3, */ 3576 FUNCTION_MODE 3577 }; 3578 3579 /* press Fn key a while second, it will switch to Function Mode. Then 3580 * release Fn key, previous mode be restored. 3581 */ 3582 static bool adaptive_keyboard_mode_is_saved; 3583 static int adaptive_keyboard_prev_mode; 3584 3585 static int adaptive_keyboard_get_mode(void) 3586 { 3587 int mode = 0; 3588 3589 if (!acpi_evalf(hkey_handle, &mode, "GTRW", "dd", 0)) { 3590 pr_err("Cannot read adaptive keyboard mode\n"); 3591 return -EIO; 3592 } 3593 3594 return mode; 3595 } 3596 3597 static int adaptive_keyboard_set_mode(int new_mode) 3598 { 3599 if (new_mode < 0 || 3600 new_mode > LAYFLAT_MODE) 3601 return -EINVAL; 3602 3603 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", new_mode)) { 3604 pr_err("Cannot set adaptive keyboard mode\n"); 3605 return -EIO; 3606 } 3607 3608 return 0; 3609 } 3610 3611 static int adaptive_keyboard_get_next_mode(int mode) 3612 { 3613 size_t i; 3614 size_t max_mode = ARRAY_SIZE(adaptive_keyboard_modes) - 1; 3615 3616 for (i = 0; i <= max_mode; i++) { 3617 if (adaptive_keyboard_modes[i] == mode) 3618 break; 3619 } 3620 3621 if (i >= max_mode) 3622 i = 0; 3623 else 3624 i++; 3625 3626 return adaptive_keyboard_modes[i]; 3627 } 3628 3629 static void adaptive_keyboard_change_row(void) 3630 { 3631 int mode; 3632 3633 if (adaptive_keyboard_mode_is_saved) { 3634 mode = adaptive_keyboard_prev_mode; 3635 adaptive_keyboard_mode_is_saved = false; 3636 } else { 3637 mode = adaptive_keyboard_get_mode(); 3638 if (mode < 0) 3639 return; 3640 mode = adaptive_keyboard_get_next_mode(mode); 3641 } 3642 3643 adaptive_keyboard_set_mode(mode); 3644 } 3645 3646 static void adaptive_keyboard_s_quickview_row(void) 3647 { 3648 int mode; 3649 3650 mode = adaptive_keyboard_get_mode(); 3651 if (mode < 0) 3652 return; 3653 3654 adaptive_keyboard_prev_mode = mode; 3655 adaptive_keyboard_mode_is_saved = true; 3656 3657 adaptive_keyboard_set_mode(FUNCTION_MODE); 3658 } 3659 3660 /* 0x1000-0x1FFF: key presses */ 3661 static bool hotkey_notify_hotkey(const u32 hkey, bool *send_acpi_ev) 3662 { 3663 /* Never send ACPI netlink events for original hotkeys (hkey: 0x1001 - 0x1020) */ 3664 if (hkey >= TP_HKEY_EV_ORIG_KEY_START && hkey <= TP_HKEY_EV_ORIG_KEY_END) { 3665 *send_acpi_ev = false; 3666 3667 /* Original hotkeys may be polled from NVRAM instead */ 3668 unsigned int scancode = hkey - TP_HKEY_EV_ORIG_KEY_START; 3669 if (hotkey_source_mask & (1 << scancode)) 3670 return true; 3671 } 3672 3673 return tpacpi_input_send_key(hkey, send_acpi_ev); 3674 } 3675 3676 /* 0x2000-0x2FFF: Wakeup reason */ 3677 static bool hotkey_notify_wakeup(const u32 hkey, bool *send_acpi_ev) 3678 { 3679 switch (hkey) { 3680 case TP_HKEY_EV_WKUP_S3_UNDOCK: /* suspend, undock */ 3681 case TP_HKEY_EV_WKUP_S4_UNDOCK: /* hibernation, undock */ 3682 hotkey_wakeup_reason = TP_ACPI_WAKEUP_UNDOCK; 3683 *send_acpi_ev = false; 3684 break; 3685 3686 case TP_HKEY_EV_WKUP_S3_BAYEJ: /* suspend, bay eject */ 3687 case TP_HKEY_EV_WKUP_S4_BAYEJ: /* hibernation, bay eject */ 3688 hotkey_wakeup_reason = TP_ACPI_WAKEUP_BAYEJ; 3689 *send_acpi_ev = false; 3690 break; 3691 3692 case TP_HKEY_EV_WKUP_S3_BATLOW: /* Battery on critical low level/S3 */ 3693 case TP_HKEY_EV_WKUP_S4_BATLOW: /* Battery on critical low level/S4 */ 3694 pr_alert("EMERGENCY WAKEUP: battery almost empty\n"); 3695 /* how to auto-heal: */ 3696 /* 2313: woke up from S3, go to S4/S5 */ 3697 /* 2413: woke up from S4, go to S5 */ 3698 break; 3699 3700 default: 3701 return false; 3702 } 3703 3704 if (hotkey_wakeup_reason != TP_ACPI_WAKEUP_NONE) { 3705 pr_info("woke up due to a hot-unplug request...\n"); 3706 hotkey_wakeup_reason_notify_change(); 3707 } 3708 return true; 3709 } 3710 3711 /* 0x4000-0x4FFF: dock-related events */ 3712 static bool hotkey_notify_dockevent(const u32 hkey, bool *send_acpi_ev) 3713 { 3714 switch (hkey) { 3715 case TP_HKEY_EV_UNDOCK_ACK: 3716 /* ACPI undock operation completed after wakeup */ 3717 hotkey_autosleep_ack = 1; 3718 pr_info("undocked\n"); 3719 hotkey_wakeup_hotunplug_complete_notify_change(); 3720 return true; 3721 3722 case TP_HKEY_EV_HOTPLUG_DOCK: /* docked to port replicator */ 3723 pr_info("docked into hotplug port replicator\n"); 3724 return true; 3725 case TP_HKEY_EV_HOTPLUG_UNDOCK: /* undocked from port replicator */ 3726 pr_info("undocked from hotplug port replicator\n"); 3727 return true; 3728 3729 /* 3730 * Deliberately ignore attaching and detaching the keybord cover to avoid 3731 * duplicates from intel-vbtn, which already emits SW_TABLET_MODE events 3732 * to userspace. 3733 * 3734 * Please refer to the following thread for more information and a preliminary 3735 * implementation using the GTOP ("Get Tablet OPtions") interface that could be 3736 * extended to other attachment options of the ThinkPad X1 Tablet series, such as 3737 * the Pico cartridge dock module: 3738 * https://lore.kernel.org/platform-driver-x86/38cb8265-1e30-d547-9e12-b4ae290be737@a-kobel.de/ 3739 */ 3740 case TP_HKEY_EV_KBD_COVER_ATTACH: 3741 case TP_HKEY_EV_KBD_COVER_DETACH: 3742 *send_acpi_ev = false; 3743 return true; 3744 3745 default: 3746 return false; 3747 } 3748 } 3749 3750 /* 0x5000-0x5FFF: human interface helpers */ 3751 static bool hotkey_notify_usrevent(const u32 hkey, bool *send_acpi_ev) 3752 { 3753 switch (hkey) { 3754 case TP_HKEY_EV_PEN_INSERTED: /* X61t: tablet pen inserted into bay */ 3755 case TP_HKEY_EV_PEN_REMOVED: /* X61t: tablet pen removed from bay */ 3756 return true; 3757 3758 case TP_HKEY_EV_TABLET_TABLET: /* X41t-X61t: tablet mode */ 3759 case TP_HKEY_EV_TABLET_NOTEBOOK: /* X41t-X61t: normal mode */ 3760 tpacpi_input_send_tabletsw(); 3761 hotkey_tablet_mode_notify_change(); 3762 *send_acpi_ev = false; 3763 return true; 3764 3765 case TP_HKEY_EV_LID_CLOSE: /* Lid closed */ 3766 case TP_HKEY_EV_LID_OPEN: /* Lid opened */ 3767 case TP_HKEY_EV_BRGHT_CHANGED: /* brightness changed */ 3768 /* do not propagate these events */ 3769 *send_acpi_ev = false; 3770 return true; 3771 3772 default: 3773 return false; 3774 } 3775 } 3776 3777 static void thermal_dump_all_sensors(void); 3778 static void palmsensor_refresh(void); 3779 3780 /* 0x6000-0x6FFF: thermal alarms/notices and keyboard events */ 3781 static bool hotkey_notify_6xxx(const u32 hkey, bool *send_acpi_ev) 3782 { 3783 switch (hkey) { 3784 case TP_HKEY_EV_THM_TABLE_CHANGED: 3785 pr_debug("EC reports: Thermal Table has changed\n"); 3786 /* recommended action: do nothing, we don't have 3787 * Lenovo ATM information */ 3788 return true; 3789 case TP_HKEY_EV_THM_CSM_COMPLETED: 3790 pr_debug("EC reports: Thermal Control Command set completed (DYTC)\n"); 3791 /* Thermal event - pass on to event handler */ 3792 tpacpi_driver_event(hkey); 3793 return true; 3794 case TP_HKEY_EV_THM_TRANSFM_CHANGED: 3795 pr_debug("EC reports: Thermal Transformation changed (GMTS)\n"); 3796 /* recommended action: do nothing, we don't have 3797 * Lenovo ATM information */ 3798 return true; 3799 case TP_HKEY_EV_ALARM_BAT_HOT: 3800 pr_crit("THERMAL ALARM: battery is too hot!\n"); 3801 /* recommended action: warn user through gui */ 3802 break; 3803 case TP_HKEY_EV_ALARM_BAT_XHOT: 3804 pr_alert("THERMAL EMERGENCY: battery is extremely hot!\n"); 3805 /* recommended action: immediate sleep/hibernate */ 3806 break; 3807 case TP_HKEY_EV_ALARM_BAT_LIM_CHANGE: 3808 pr_debug("Battery Info: battery charge threshold changed\n"); 3809 /* User changed charging threshold. No action needed */ 3810 return true; 3811 case TP_HKEY_EV_ALARM_SENSOR_HOT: 3812 pr_crit("THERMAL ALARM: a sensor reports something is too hot!\n"); 3813 /* recommended action: warn user through gui, that */ 3814 /* some internal component is too hot */ 3815 break; 3816 case TP_HKEY_EV_ALARM_SENSOR_XHOT: 3817 pr_alert("THERMAL EMERGENCY: a sensor reports something is extremely hot!\n"); 3818 /* recommended action: immediate sleep/hibernate */ 3819 break; 3820 case TP_HKEY_EV_AC_CHANGED: 3821 /* X120e, X121e, X220, X220i, X220t, X230, T420, T420s, W520: 3822 * AC status changed; can be triggered by plugging or 3823 * unplugging AC adapter, docking or undocking. */ 3824 3825 fallthrough; 3826 3827 case TP_HKEY_EV_KEY_NUMLOCK: 3828 case TP_HKEY_EV_KEY_FN: 3829 /* key press events, we just ignore them as long as the EC 3830 * is still reporting them in the normal keyboard stream */ 3831 *send_acpi_ev = false; 3832 return true; 3833 3834 case TP_HKEY_EV_KEY_FN_ESC: 3835 /* Get the media key status to force the status LED to update */ 3836 acpi_evalf(hkey_handle, NULL, "GMKS", "v"); 3837 *send_acpi_ev = false; 3838 return true; 3839 3840 case TP_HKEY_EV_TABLET_CHANGED: 3841 tpacpi_input_send_tabletsw(); 3842 hotkey_tablet_mode_notify_change(); 3843 *send_acpi_ev = false; 3844 return true; 3845 3846 case TP_HKEY_EV_PALM_DETECTED: 3847 case TP_HKEY_EV_PALM_UNDETECTED: 3848 /* palm detected - pass on to event handler */ 3849 palmsensor_refresh(); 3850 return true; 3851 3852 default: 3853 /* report simply as unknown, no sensor dump */ 3854 return false; 3855 } 3856 3857 thermal_dump_all_sensors(); 3858 return true; 3859 } 3860 3861 static bool hotkey_notify_8xxx(const u32 hkey, bool *send_acpi_ev) 3862 { 3863 switch (hkey) { 3864 case TP_HKEY_EV_TRACK_DOUBLETAP: 3865 if (tp_features.trackpoint_doubletap) 3866 tpacpi_input_send_key(hkey, send_acpi_ev); 3867 3868 return true; 3869 default: 3870 return false; 3871 } 3872 } 3873 3874 static void hotkey_notify(struct ibm_struct *ibm, u32 event) 3875 { 3876 u32 hkey; 3877 bool send_acpi_ev; 3878 bool known_ev; 3879 3880 if (event != 0x80) { 3881 pr_err("unknown HKEY notification event %d\n", event); 3882 /* forward it to userspace, maybe it knows how to handle it */ 3883 acpi_bus_generate_netlink_event( 3884 ibm->acpi->device->pnp.device_class, 3885 dev_name(&ibm->acpi->device->dev), 3886 event, 0); 3887 return; 3888 } 3889 3890 while (1) { 3891 if (!acpi_evalf(hkey_handle, &hkey, "MHKP", "d")) { 3892 pr_err("failed to retrieve HKEY event\n"); 3893 return; 3894 } 3895 3896 if (hkey == 0) { 3897 /* queue empty */ 3898 return; 3899 } 3900 3901 send_acpi_ev = true; 3902 known_ev = false; 3903 3904 switch (hkey >> 12) { 3905 case 1: 3906 /* 0x1000-0x1FFF: key presses */ 3907 known_ev = hotkey_notify_hotkey(hkey, &send_acpi_ev); 3908 break; 3909 case 2: 3910 /* 0x2000-0x2FFF: Wakeup reason */ 3911 known_ev = hotkey_notify_wakeup(hkey, &send_acpi_ev); 3912 break; 3913 case 3: 3914 /* 0x3000-0x3FFF: bay-related wakeups */ 3915 switch (hkey) { 3916 case TP_HKEY_EV_BAYEJ_ACK: 3917 hotkey_autosleep_ack = 1; 3918 pr_info("bay ejected\n"); 3919 hotkey_wakeup_hotunplug_complete_notify_change(); 3920 known_ev = true; 3921 break; 3922 case TP_HKEY_EV_OPTDRV_EJ: 3923 /* FIXME: kick libata if SATA link offline */ 3924 known_ev = true; 3925 break; 3926 } 3927 break; 3928 case 4: 3929 /* 0x4000-0x4FFF: dock-related events */ 3930 known_ev = hotkey_notify_dockevent(hkey, &send_acpi_ev); 3931 break; 3932 case 5: 3933 /* 0x5000-0x5FFF: human interface helpers */ 3934 known_ev = hotkey_notify_usrevent(hkey, &send_acpi_ev); 3935 break; 3936 case 6: 3937 /* 0x6000-0x6FFF: thermal alarms/notices and 3938 * keyboard events */ 3939 known_ev = hotkey_notify_6xxx(hkey, &send_acpi_ev); 3940 break; 3941 case 7: 3942 /* 0x7000-0x7FFF: misc */ 3943 if (tp_features.hotkey_wlsw && 3944 hkey == TP_HKEY_EV_RFKILL_CHANGED) { 3945 tpacpi_send_radiosw_update(); 3946 send_acpi_ev = false; 3947 known_ev = true; 3948 } 3949 break; 3950 case 8: 3951 /* 0x8000-0x8FFF: misc2 */ 3952 known_ev = hotkey_notify_8xxx(hkey, &send_acpi_ev); 3953 break; 3954 } 3955 if (!known_ev) { 3956 pr_notice("unhandled HKEY event 0x%04x\n", hkey); 3957 pr_notice("please report the conditions when this event happened to %s\n", 3958 TPACPI_MAIL); 3959 } 3960 3961 /* netlink events */ 3962 if (send_acpi_ev) { 3963 acpi_bus_generate_netlink_event( 3964 ibm->acpi->device->pnp.device_class, 3965 dev_name(&ibm->acpi->device->dev), 3966 event, hkey); 3967 } 3968 } 3969 } 3970 3971 static void hotkey_suspend(void) 3972 { 3973 /* Do these on suspend, we get the events on early resume! */ 3974 hotkey_wakeup_reason = TP_ACPI_WAKEUP_NONE; 3975 hotkey_autosleep_ack = 0; 3976 3977 /* save previous mode of adaptive keyboard of X1 Carbon */ 3978 if (tp_features.has_adaptive_kbd) { 3979 if (!acpi_evalf(hkey_handle, &adaptive_keyboard_prev_mode, 3980 "GTRW", "dd", 0)) { 3981 pr_err("Cannot read adaptive keyboard mode.\n"); 3982 } 3983 } 3984 } 3985 3986 static void hotkey_resume(void) 3987 { 3988 tpacpi_disable_brightness_delay(); 3989 3990 mutex_lock(&hotkey_mutex); 3991 if (hotkey_status_set(true) < 0 || 3992 hotkey_mask_set(hotkey_acpi_mask) < 0) 3993 pr_err("error while attempting to reset the event firmware interface\n"); 3994 mutex_unlock(&hotkey_mutex); 3995 3996 tpacpi_send_radiosw_update(); 3997 tpacpi_input_send_tabletsw(); 3998 hotkey_tablet_mode_notify_change(); 3999 hotkey_wakeup_reason_notify_change(); 4000 hotkey_wakeup_hotunplug_complete_notify_change(); 4001 hotkey_poll_setup_safe(false); 4002 4003 /* restore previous mode of adapive keyboard of X1 Carbon */ 4004 if (tp_features.has_adaptive_kbd) { 4005 if (!acpi_evalf(hkey_handle, NULL, "STRW", "vd", 4006 adaptive_keyboard_prev_mode)) { 4007 pr_err("Cannot set adaptive keyboard mode.\n"); 4008 } 4009 } 4010 } 4011 4012 /* procfs -------------------------------------------------------------- */ 4013 static int hotkey_read(struct seq_file *m) 4014 { 4015 int res, status; 4016 4017 if (!tp_features.hotkey) { 4018 seq_printf(m, "status:\t\tnot supported\n"); 4019 return 0; 4020 } 4021 4022 if (mutex_lock_killable(&hotkey_mutex)) 4023 return -ERESTARTSYS; 4024 res = hotkey_status_get(&status); 4025 if (!res) 4026 res = hotkey_mask_get(); 4027 mutex_unlock(&hotkey_mutex); 4028 if (res) 4029 return res; 4030 4031 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status & BIT(0))); 4032 if (hotkey_all_mask) { 4033 seq_printf(m, "mask:\t\t0x%08x\n", hotkey_user_mask); 4034 seq_printf(m, "commands:\tenable, disable, reset, <mask>\n"); 4035 } else { 4036 seq_printf(m, "mask:\t\tnot supported\n"); 4037 seq_printf(m, "commands:\tenable, disable, reset\n"); 4038 } 4039 4040 return 0; 4041 } 4042 4043 static void hotkey_enabledisable_warn(bool enable) 4044 { 4045 tpacpi_log_usertask("procfs hotkey enable/disable"); 4046 if (!WARN((tpacpi_lifecycle == TPACPI_LIFE_RUNNING || !enable), 4047 pr_fmt("hotkey enable/disable functionality has been removed from the driver. Hotkeys are always enabled.\n"))) 4048 pr_err("Please remove the hotkey=enable module parameter, it is deprecated. Hotkeys are always enabled.\n"); 4049 } 4050 4051 static int hotkey_write(char *buf) 4052 { 4053 int res; 4054 u32 mask; 4055 char *cmd; 4056 4057 if (!tp_features.hotkey) 4058 return -ENODEV; 4059 4060 if (mutex_lock_killable(&hotkey_mutex)) 4061 return -ERESTARTSYS; 4062 4063 mask = hotkey_user_mask; 4064 4065 res = 0; 4066 while ((cmd = strsep(&buf, ","))) { 4067 if (strstarts(cmd, "enable")) { 4068 hotkey_enabledisable_warn(1); 4069 } else if (strstarts(cmd, "disable")) { 4070 hotkey_enabledisable_warn(0); 4071 res = -EPERM; 4072 } else if (strstarts(cmd, "reset")) { 4073 mask = (hotkey_all_mask | hotkey_source_mask) 4074 & ~hotkey_reserved_mask; 4075 } else if (sscanf(cmd, "0x%x", &mask) == 1) { 4076 /* mask set */ 4077 } else if (sscanf(cmd, "%x", &mask) == 1) { 4078 /* mask set */ 4079 } else { 4080 res = -EINVAL; 4081 goto errexit; 4082 } 4083 } 4084 4085 if (!res) { 4086 tpacpi_disclose_usertask("procfs hotkey", 4087 "set mask to 0x%08x\n", mask); 4088 res = hotkey_user_mask_set(mask); 4089 } 4090 4091 errexit: 4092 mutex_unlock(&hotkey_mutex); 4093 return res; 4094 } 4095 4096 static const struct acpi_device_id ibm_htk_device_ids[] = { 4097 {TPACPI_ACPI_IBM_HKEY_HID, 0}, 4098 {TPACPI_ACPI_LENOVO_HKEY_HID, 0}, 4099 {TPACPI_ACPI_LENOVO_HKEY_V2_HID, 0}, 4100 {"", 0}, 4101 }; 4102 4103 static struct tp_acpi_drv_struct ibm_hotkey_acpidriver = { 4104 .hid = ibm_htk_device_ids, 4105 .notify = hotkey_notify, 4106 .handle = &hkey_handle, 4107 .type = ACPI_DEVICE_NOTIFY, 4108 }; 4109 4110 static struct ibm_struct hotkey_driver_data = { 4111 .name = "hotkey", 4112 .read = hotkey_read, 4113 .write = hotkey_write, 4114 .exit = hotkey_exit, 4115 .resume = hotkey_resume, 4116 .suspend = hotkey_suspend, 4117 .acpi = &ibm_hotkey_acpidriver, 4118 }; 4119 4120 /************************************************************************* 4121 * Bluetooth subdriver 4122 */ 4123 4124 enum { 4125 /* ACPI GBDC/SBDC bits */ 4126 TP_ACPI_BLUETOOTH_HWPRESENT = 0x01, /* Bluetooth hw available */ 4127 TP_ACPI_BLUETOOTH_RADIOSSW = 0x02, /* Bluetooth radio enabled */ 4128 TP_ACPI_BLUETOOTH_RESUMECTRL = 0x04, /* Bluetooth state at resume: 4129 0 = disable, 1 = enable */ 4130 }; 4131 4132 enum { 4133 /* ACPI \BLTH commands */ 4134 TP_ACPI_BLTH_GET_ULTRAPORT_ID = 0x00, /* Get Ultraport BT ID */ 4135 TP_ACPI_BLTH_GET_PWR_ON_RESUME = 0x01, /* Get power-on-resume state */ 4136 TP_ACPI_BLTH_PWR_ON_ON_RESUME = 0x02, /* Resume powered on */ 4137 TP_ACPI_BLTH_PWR_OFF_ON_RESUME = 0x03, /* Resume powered off */ 4138 TP_ACPI_BLTH_SAVE_STATE = 0x05, /* Save state for S4/S5 */ 4139 }; 4140 4141 #define TPACPI_RFK_BLUETOOTH_SW_NAME "tpacpi_bluetooth_sw" 4142 4143 static int bluetooth_get_status(void) 4144 { 4145 int status; 4146 4147 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4148 if (dbg_bluetoothemul) 4149 return (tpacpi_bluetooth_emulstate) ? 4150 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4151 #endif 4152 4153 if (!acpi_evalf(hkey_handle, &status, "GBDC", "d")) 4154 return -EIO; 4155 4156 return ((status & TP_ACPI_BLUETOOTH_RADIOSSW) != 0) ? 4157 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4158 } 4159 4160 static int bluetooth_set_status(enum tpacpi_rfkill_state state) 4161 { 4162 int status; 4163 4164 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s bluetooth\n", 4165 str_enable_disable(state == TPACPI_RFK_RADIO_ON)); 4166 4167 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4168 if (dbg_bluetoothemul) { 4169 tpacpi_bluetooth_emulstate = (state == TPACPI_RFK_RADIO_ON); 4170 return 0; 4171 } 4172 #endif 4173 4174 if (state == TPACPI_RFK_RADIO_ON) 4175 status = TP_ACPI_BLUETOOTH_RADIOSSW 4176 | TP_ACPI_BLUETOOTH_RESUMECTRL; 4177 else 4178 status = 0; 4179 4180 if (!acpi_evalf(hkey_handle, NULL, "SBDC", "vd", status)) 4181 return -EIO; 4182 4183 return 0; 4184 } 4185 4186 /* sysfs bluetooth enable ---------------------------------------------- */ 4187 static ssize_t bluetooth_enable_show(struct device *dev, 4188 struct device_attribute *attr, 4189 char *buf) 4190 { 4191 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_BLUETOOTH_SW_ID, 4192 attr, buf); 4193 } 4194 4195 static ssize_t bluetooth_enable_store(struct device *dev, 4196 struct device_attribute *attr, 4197 const char *buf, size_t count) 4198 { 4199 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_BLUETOOTH_SW_ID, 4200 attr, buf, count); 4201 } 4202 4203 static DEVICE_ATTR_RW(bluetooth_enable); 4204 4205 /* --------------------------------------------------------------------- */ 4206 4207 static struct attribute *bluetooth_attributes[] = { 4208 &dev_attr_bluetooth_enable.attr, 4209 NULL 4210 }; 4211 4212 static umode_t bluetooth_attr_is_visible(struct kobject *kobj, 4213 struct attribute *attr, int n) 4214 { 4215 return tp_features.bluetooth ? attr->mode : 0; 4216 } 4217 4218 static const struct attribute_group bluetooth_attr_group = { 4219 .is_visible = bluetooth_attr_is_visible, 4220 .attrs = bluetooth_attributes, 4221 }; 4222 4223 static const struct tpacpi_rfk_ops bluetooth_tprfk_ops = { 4224 .get_status = bluetooth_get_status, 4225 .set_status = bluetooth_set_status, 4226 }; 4227 4228 static void bluetooth_shutdown(void) 4229 { 4230 /* Order firmware to save current state to NVRAM */ 4231 if (!acpi_evalf(NULL, NULL, "\\BLTH", "vd", 4232 TP_ACPI_BLTH_SAVE_STATE)) 4233 pr_notice("failed to save bluetooth state to NVRAM\n"); 4234 else 4235 vdbg_printk(TPACPI_DBG_RFKILL, 4236 "bluetooth state saved to NVRAM\n"); 4237 } 4238 4239 static void bluetooth_exit(void) 4240 { 4241 tpacpi_destroy_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID); 4242 bluetooth_shutdown(); 4243 } 4244 4245 static const struct dmi_system_id fwbug_list[] __initconst = { 4246 { 4247 .ident = "ThinkPad E485", 4248 .driver_data = &quirk_btusb_bug, 4249 .matches = { 4250 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4251 DMI_MATCH(DMI_BOARD_NAME, "20KU"), 4252 }, 4253 }, 4254 { 4255 .ident = "ThinkPad E585", 4256 .driver_data = &quirk_btusb_bug, 4257 .matches = { 4258 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4259 DMI_MATCH(DMI_BOARD_NAME, "20KV"), 4260 }, 4261 }, 4262 { 4263 .ident = "ThinkPad A285 - 20MW", 4264 .driver_data = &quirk_btusb_bug, 4265 .matches = { 4266 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4267 DMI_MATCH(DMI_BOARD_NAME, "20MW"), 4268 }, 4269 }, 4270 { 4271 .ident = "ThinkPad A285 - 20MX", 4272 .driver_data = &quirk_btusb_bug, 4273 .matches = { 4274 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4275 DMI_MATCH(DMI_BOARD_NAME, "20MX"), 4276 }, 4277 }, 4278 { 4279 .ident = "ThinkPad A485 - 20MU", 4280 .driver_data = &quirk_btusb_bug, 4281 .matches = { 4282 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4283 DMI_MATCH(DMI_BOARD_NAME, "20MU"), 4284 }, 4285 }, 4286 { 4287 .ident = "ThinkPad A485 - 20MV", 4288 .driver_data = &quirk_btusb_bug, 4289 .matches = { 4290 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), 4291 DMI_MATCH(DMI_BOARD_NAME, "20MV"), 4292 }, 4293 }, 4294 {} 4295 }; 4296 4297 static const struct pci_device_id fwbug_cards_ids[] __initconst = { 4298 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24F3) }, 4299 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x24FD) }, 4300 { PCI_DEVICE(PCI_VENDOR_ID_INTEL, 0x2526) }, 4301 {} 4302 }; 4303 4304 4305 static int __init have_bt_fwbug(void) 4306 { 4307 /* 4308 * Some AMD based ThinkPads have a firmware bug that calling 4309 * "GBDC" will cause bluetooth on Intel wireless cards blocked 4310 */ 4311 if (tp_features.quirks && tp_features.quirks->btusb_bug && 4312 pci_dev_present(fwbug_cards_ids)) { 4313 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4314 FW_BUG "disable bluetooth subdriver for Intel cards\n"); 4315 return 1; 4316 } else 4317 return 0; 4318 } 4319 4320 static int __init bluetooth_init(struct ibm_init_struct *iibm) 4321 { 4322 int res; 4323 int status = 0; 4324 4325 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4326 "initializing bluetooth subdriver\n"); 4327 4328 TPACPI_ACPIHANDLE_INIT(hkey); 4329 4330 /* bluetooth not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 4331 G4x, R30, R31, R40e, R50e, T20-22, X20-21 */ 4332 tp_features.bluetooth = !have_bt_fwbug() && hkey_handle && 4333 acpi_evalf(hkey_handle, &status, "GBDC", "qd"); 4334 4335 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4336 "bluetooth is %s, status 0x%02x\n", 4337 str_supported(tp_features.bluetooth), 4338 status); 4339 4340 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4341 if (dbg_bluetoothemul) { 4342 tp_features.bluetooth = 1; 4343 pr_info("bluetooth switch emulation enabled\n"); 4344 } else 4345 #endif 4346 if (tp_features.bluetooth && 4347 !(status & TP_ACPI_BLUETOOTH_HWPRESENT)) { 4348 /* no bluetooth hardware present in system */ 4349 tp_features.bluetooth = 0; 4350 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4351 "bluetooth hardware not installed\n"); 4352 } 4353 4354 if (!tp_features.bluetooth) 4355 return -ENODEV; 4356 4357 res = tpacpi_new_rfkill(TPACPI_RFK_BLUETOOTH_SW_ID, 4358 &bluetooth_tprfk_ops, 4359 RFKILL_TYPE_BLUETOOTH, 4360 TPACPI_RFK_BLUETOOTH_SW_NAME, 4361 true); 4362 return res; 4363 } 4364 4365 /* procfs -------------------------------------------------------------- */ 4366 static int bluetooth_read(struct seq_file *m) 4367 { 4368 return tpacpi_rfk_procfs_read(TPACPI_RFK_BLUETOOTH_SW_ID, m); 4369 } 4370 4371 static int bluetooth_write(char *buf) 4372 { 4373 return tpacpi_rfk_procfs_write(TPACPI_RFK_BLUETOOTH_SW_ID, buf); 4374 } 4375 4376 static struct ibm_struct bluetooth_driver_data = { 4377 .name = "bluetooth", 4378 .read = bluetooth_read, 4379 .write = bluetooth_write, 4380 .exit = bluetooth_exit, 4381 .shutdown = bluetooth_shutdown, 4382 }; 4383 4384 /************************************************************************* 4385 * Wan subdriver 4386 */ 4387 4388 enum { 4389 /* ACPI GWAN/SWAN bits */ 4390 TP_ACPI_WANCARD_HWPRESENT = 0x01, /* Wan hw available */ 4391 TP_ACPI_WANCARD_RADIOSSW = 0x02, /* Wan radio enabled */ 4392 TP_ACPI_WANCARD_RESUMECTRL = 0x04, /* Wan state at resume: 4393 0 = disable, 1 = enable */ 4394 }; 4395 4396 #define TPACPI_RFK_WWAN_SW_NAME "tpacpi_wwan_sw" 4397 4398 static int wan_get_status(void) 4399 { 4400 int status; 4401 4402 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4403 if (dbg_wwanemul) 4404 return (tpacpi_wwan_emulstate) ? 4405 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4406 #endif 4407 4408 if (!acpi_evalf(hkey_handle, &status, "GWAN", "d")) 4409 return -EIO; 4410 4411 return ((status & TP_ACPI_WANCARD_RADIOSSW) != 0) ? 4412 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4413 } 4414 4415 static int wan_set_status(enum tpacpi_rfkill_state state) 4416 { 4417 int status; 4418 4419 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s wwan\n", 4420 str_enable_disable(state == TPACPI_RFK_RADIO_ON)); 4421 4422 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4423 if (dbg_wwanemul) { 4424 tpacpi_wwan_emulstate = (state == TPACPI_RFK_RADIO_ON); 4425 return 0; 4426 } 4427 #endif 4428 4429 if (state == TPACPI_RFK_RADIO_ON) 4430 status = TP_ACPI_WANCARD_RADIOSSW 4431 | TP_ACPI_WANCARD_RESUMECTRL; 4432 else 4433 status = 0; 4434 4435 if (!acpi_evalf(hkey_handle, NULL, "SWAN", "vd", status)) 4436 return -EIO; 4437 4438 return 0; 4439 } 4440 4441 /* sysfs wan enable ---------------------------------------------------- */ 4442 static ssize_t wan_enable_show(struct device *dev, 4443 struct device_attribute *attr, 4444 char *buf) 4445 { 4446 return tpacpi_rfk_sysfs_enable_show(TPACPI_RFK_WWAN_SW_ID, 4447 attr, buf); 4448 } 4449 4450 static ssize_t wan_enable_store(struct device *dev, 4451 struct device_attribute *attr, 4452 const char *buf, size_t count) 4453 { 4454 return tpacpi_rfk_sysfs_enable_store(TPACPI_RFK_WWAN_SW_ID, 4455 attr, buf, count); 4456 } 4457 4458 static DEVICE_ATTR(wwan_enable, S_IWUSR | S_IRUGO, 4459 wan_enable_show, wan_enable_store); 4460 4461 /* --------------------------------------------------------------------- */ 4462 4463 static struct attribute *wan_attributes[] = { 4464 &dev_attr_wwan_enable.attr, 4465 NULL 4466 }; 4467 4468 static umode_t wan_attr_is_visible(struct kobject *kobj, struct attribute *attr, 4469 int n) 4470 { 4471 return tp_features.wan ? attr->mode : 0; 4472 } 4473 4474 static const struct attribute_group wan_attr_group = { 4475 .is_visible = wan_attr_is_visible, 4476 .attrs = wan_attributes, 4477 }; 4478 4479 static const struct tpacpi_rfk_ops wan_tprfk_ops = { 4480 .get_status = wan_get_status, 4481 .set_status = wan_set_status, 4482 }; 4483 4484 static void wan_shutdown(void) 4485 { 4486 /* Order firmware to save current state to NVRAM */ 4487 if (!acpi_evalf(NULL, NULL, "\\WGSV", "vd", 4488 TP_ACPI_WGSV_SAVE_STATE)) 4489 pr_notice("failed to save WWAN state to NVRAM\n"); 4490 else 4491 vdbg_printk(TPACPI_DBG_RFKILL, 4492 "WWAN state saved to NVRAM\n"); 4493 } 4494 4495 static void wan_exit(void) 4496 { 4497 tpacpi_destroy_rfkill(TPACPI_RFK_WWAN_SW_ID); 4498 wan_shutdown(); 4499 } 4500 4501 static int __init wan_init(struct ibm_init_struct *iibm) 4502 { 4503 int res; 4504 int status = 0; 4505 4506 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4507 "initializing wan subdriver\n"); 4508 4509 TPACPI_ACPIHANDLE_INIT(hkey); 4510 4511 tp_features.wan = hkey_handle && 4512 acpi_evalf(hkey_handle, &status, "GWAN", "qd"); 4513 4514 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4515 "wan is %s, status 0x%02x\n", 4516 str_supported(tp_features.wan), 4517 status); 4518 4519 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4520 if (dbg_wwanemul) { 4521 tp_features.wan = 1; 4522 pr_info("wwan switch emulation enabled\n"); 4523 } else 4524 #endif 4525 if (tp_features.wan && 4526 !(status & TP_ACPI_WANCARD_HWPRESENT)) { 4527 /* no wan hardware present in system */ 4528 tp_features.wan = 0; 4529 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4530 "wan hardware not installed\n"); 4531 } 4532 4533 if (!tp_features.wan) 4534 return -ENODEV; 4535 4536 res = tpacpi_new_rfkill(TPACPI_RFK_WWAN_SW_ID, 4537 &wan_tprfk_ops, 4538 RFKILL_TYPE_WWAN, 4539 TPACPI_RFK_WWAN_SW_NAME, 4540 true); 4541 return res; 4542 } 4543 4544 /* procfs -------------------------------------------------------------- */ 4545 static int wan_read(struct seq_file *m) 4546 { 4547 return tpacpi_rfk_procfs_read(TPACPI_RFK_WWAN_SW_ID, m); 4548 } 4549 4550 static int wan_write(char *buf) 4551 { 4552 return tpacpi_rfk_procfs_write(TPACPI_RFK_WWAN_SW_ID, buf); 4553 } 4554 4555 static struct ibm_struct wan_driver_data = { 4556 .name = "wan", 4557 .read = wan_read, 4558 .write = wan_write, 4559 .exit = wan_exit, 4560 .shutdown = wan_shutdown, 4561 }; 4562 4563 /************************************************************************* 4564 * UWB subdriver 4565 */ 4566 4567 enum { 4568 /* ACPI GUWB/SUWB bits */ 4569 TP_ACPI_UWB_HWPRESENT = 0x01, /* UWB hw available */ 4570 TP_ACPI_UWB_RADIOSSW = 0x02, /* UWB radio enabled */ 4571 }; 4572 4573 #define TPACPI_RFK_UWB_SW_NAME "tpacpi_uwb_sw" 4574 4575 static int uwb_get_status(void) 4576 { 4577 int status; 4578 4579 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4580 if (dbg_uwbemul) 4581 return (tpacpi_uwb_emulstate) ? 4582 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4583 #endif 4584 4585 if (!acpi_evalf(hkey_handle, &status, "GUWB", "d")) 4586 return -EIO; 4587 4588 return ((status & TP_ACPI_UWB_RADIOSSW) != 0) ? 4589 TPACPI_RFK_RADIO_ON : TPACPI_RFK_RADIO_OFF; 4590 } 4591 4592 static int uwb_set_status(enum tpacpi_rfkill_state state) 4593 { 4594 int status; 4595 4596 vdbg_printk(TPACPI_DBG_RFKILL, "will attempt to %s UWB\n", 4597 str_enable_disable(state == TPACPI_RFK_RADIO_ON)); 4598 4599 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4600 if (dbg_uwbemul) { 4601 tpacpi_uwb_emulstate = (state == TPACPI_RFK_RADIO_ON); 4602 return 0; 4603 } 4604 #endif 4605 4606 if (state == TPACPI_RFK_RADIO_ON) 4607 status = TP_ACPI_UWB_RADIOSSW; 4608 else 4609 status = 0; 4610 4611 if (!acpi_evalf(hkey_handle, NULL, "SUWB", "vd", status)) 4612 return -EIO; 4613 4614 return 0; 4615 } 4616 4617 /* --------------------------------------------------------------------- */ 4618 4619 static const struct tpacpi_rfk_ops uwb_tprfk_ops = { 4620 .get_status = uwb_get_status, 4621 .set_status = uwb_set_status, 4622 }; 4623 4624 static void uwb_exit(void) 4625 { 4626 tpacpi_destroy_rfkill(TPACPI_RFK_UWB_SW_ID); 4627 } 4628 4629 static int __init uwb_init(struct ibm_init_struct *iibm) 4630 { 4631 int res; 4632 int status = 0; 4633 4634 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4635 "initializing uwb subdriver\n"); 4636 4637 TPACPI_ACPIHANDLE_INIT(hkey); 4638 4639 tp_features.uwb = hkey_handle && 4640 acpi_evalf(hkey_handle, &status, "GUWB", "qd"); 4641 4642 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_RFKILL, 4643 "uwb is %s, status 0x%02x\n", 4644 str_supported(tp_features.uwb), 4645 status); 4646 4647 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 4648 if (dbg_uwbemul) { 4649 tp_features.uwb = 1; 4650 pr_info("uwb switch emulation enabled\n"); 4651 } else 4652 #endif 4653 if (tp_features.uwb && 4654 !(status & TP_ACPI_UWB_HWPRESENT)) { 4655 /* no uwb hardware present in system */ 4656 tp_features.uwb = 0; 4657 dbg_printk(TPACPI_DBG_INIT, 4658 "uwb hardware not installed\n"); 4659 } 4660 4661 if (!tp_features.uwb) 4662 return -ENODEV; 4663 4664 res = tpacpi_new_rfkill(TPACPI_RFK_UWB_SW_ID, 4665 &uwb_tprfk_ops, 4666 RFKILL_TYPE_UWB, 4667 TPACPI_RFK_UWB_SW_NAME, 4668 false); 4669 return res; 4670 } 4671 4672 static struct ibm_struct uwb_driver_data = { 4673 .name = "uwb", 4674 .exit = uwb_exit, 4675 .flags.experimental = 1, 4676 }; 4677 4678 /************************************************************************* 4679 * Video subdriver 4680 */ 4681 4682 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 4683 4684 enum video_access_mode { 4685 TPACPI_VIDEO_NONE = 0, 4686 TPACPI_VIDEO_570, /* 570 */ 4687 TPACPI_VIDEO_770, /* 600e/x, 770e, 770x */ 4688 TPACPI_VIDEO_NEW, /* all others */ 4689 }; 4690 4691 enum { /* video status flags, based on VIDEO_570 */ 4692 TP_ACPI_VIDEO_S_LCD = 0x01, /* LCD output enabled */ 4693 TP_ACPI_VIDEO_S_CRT = 0x02, /* CRT output enabled */ 4694 TP_ACPI_VIDEO_S_DVI = 0x08, /* DVI output enabled */ 4695 }; 4696 4697 enum { /* TPACPI_VIDEO_570 constants */ 4698 TP_ACPI_VIDEO_570_PHSCMD = 0x87, /* unknown magic constant :( */ 4699 TP_ACPI_VIDEO_570_PHSMASK = 0x03, /* PHS bits that map to 4700 * video_status_flags */ 4701 TP_ACPI_VIDEO_570_PHS2CMD = 0x8b, /* unknown magic constant :( */ 4702 TP_ACPI_VIDEO_570_PHS2SET = 0x80, /* unknown magic constant :( */ 4703 }; 4704 4705 static enum video_access_mode video_supported; 4706 static int video_orig_autosw; 4707 4708 static int video_autosw_get(void); 4709 static int video_autosw_set(int enable); 4710 4711 TPACPI_HANDLE(vid, root, 4712 "\\_SB.PCI.AGP.VGA", /* 570 */ 4713 "\\_SB.PCI0.AGP0.VID0", /* 600e/x, 770x */ 4714 "\\_SB.PCI0.VID0", /* 770e */ 4715 "\\_SB.PCI0.VID", /* A21e, G4x, R50e, X30, X40 */ 4716 "\\_SB.PCI0.AGP.VGA", /* X100e and a few others */ 4717 "\\_SB.PCI0.AGP.VID", /* all others */ 4718 ); /* R30, R31 */ 4719 4720 TPACPI_HANDLE(vid2, root, "\\_SB.PCI0.AGPB.VID"); /* G41 */ 4721 4722 static int __init video_init(struct ibm_init_struct *iibm) 4723 { 4724 int ivga; 4725 4726 vdbg_printk(TPACPI_DBG_INIT, "initializing video subdriver\n"); 4727 4728 TPACPI_ACPIHANDLE_INIT(vid); 4729 if (tpacpi_is_ibm()) 4730 TPACPI_ACPIHANDLE_INIT(vid2); 4731 4732 if (vid2_handle && acpi_evalf(NULL, &ivga, "\\IVGA", "d") && ivga) 4733 /* G41, assume IVGA doesn't change */ 4734 vid_handle = vid2_handle; 4735 4736 if (!vid_handle) 4737 /* video switching not supported on R30, R31 */ 4738 video_supported = TPACPI_VIDEO_NONE; 4739 else if (tpacpi_is_ibm() && 4740 acpi_evalf(vid_handle, &video_orig_autosw, "SWIT", "qd")) 4741 /* 570 */ 4742 video_supported = TPACPI_VIDEO_570; 4743 else if (tpacpi_is_ibm() && 4744 acpi_evalf(vid_handle, &video_orig_autosw, "^VADL", "qd")) 4745 /* 600e/x, 770e, 770x */ 4746 video_supported = TPACPI_VIDEO_770; 4747 else 4748 /* all others */ 4749 video_supported = TPACPI_VIDEO_NEW; 4750 4751 vdbg_printk(TPACPI_DBG_INIT, "video is %s, mode %d\n", 4752 str_supported(video_supported != TPACPI_VIDEO_NONE), 4753 video_supported); 4754 4755 return (video_supported != TPACPI_VIDEO_NONE) ? 0 : -ENODEV; 4756 } 4757 4758 static void video_exit(void) 4759 { 4760 dbg_printk(TPACPI_DBG_EXIT, 4761 "restoring original video autoswitch mode\n"); 4762 if (video_autosw_set(video_orig_autosw)) 4763 pr_err("error while trying to restore original video autoswitch mode\n"); 4764 } 4765 4766 static int video_outputsw_get(void) 4767 { 4768 int status = 0; 4769 int i; 4770 4771 switch (video_supported) { 4772 case TPACPI_VIDEO_570: 4773 if (!acpi_evalf(NULL, &i, "\\_SB.PHS", "dd", 4774 TP_ACPI_VIDEO_570_PHSCMD)) 4775 return -EIO; 4776 status = i & TP_ACPI_VIDEO_570_PHSMASK; 4777 break; 4778 case TPACPI_VIDEO_770: 4779 if (!acpi_evalf(NULL, &i, "\\VCDL", "d")) 4780 return -EIO; 4781 if (i) 4782 status |= TP_ACPI_VIDEO_S_LCD; 4783 if (!acpi_evalf(NULL, &i, "\\VCDC", "d")) 4784 return -EIO; 4785 if (i) 4786 status |= TP_ACPI_VIDEO_S_CRT; 4787 break; 4788 case TPACPI_VIDEO_NEW: 4789 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 1) || 4790 !acpi_evalf(NULL, &i, "\\VCDC", "d")) 4791 return -EIO; 4792 if (i) 4793 status |= TP_ACPI_VIDEO_S_CRT; 4794 4795 if (!acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0) || 4796 !acpi_evalf(NULL, &i, "\\VCDL", "d")) 4797 return -EIO; 4798 if (i) 4799 status |= TP_ACPI_VIDEO_S_LCD; 4800 if (!acpi_evalf(NULL, &i, "\\VCDD", "d")) 4801 return -EIO; 4802 if (i) 4803 status |= TP_ACPI_VIDEO_S_DVI; 4804 break; 4805 default: 4806 return -ENOSYS; 4807 } 4808 4809 return status; 4810 } 4811 4812 static int video_outputsw_set(int status) 4813 { 4814 int autosw; 4815 int res = 0; 4816 4817 switch (video_supported) { 4818 case TPACPI_VIDEO_570: 4819 res = acpi_evalf(NULL, NULL, 4820 "\\_SB.PHS2", "vdd", 4821 TP_ACPI_VIDEO_570_PHS2CMD, 4822 status | TP_ACPI_VIDEO_570_PHS2SET); 4823 break; 4824 case TPACPI_VIDEO_770: 4825 autosw = video_autosw_get(); 4826 if (autosw < 0) 4827 return autosw; 4828 4829 res = video_autosw_set(1); 4830 if (res) 4831 return res; 4832 res = acpi_evalf(vid_handle, NULL, 4833 "ASWT", "vdd", status * 0x100, 0); 4834 if (!autosw && video_autosw_set(autosw)) { 4835 pr_err("video auto-switch left enabled due to error\n"); 4836 return -EIO; 4837 } 4838 break; 4839 case TPACPI_VIDEO_NEW: 4840 res = acpi_evalf(NULL, NULL, "\\VUPS", "vd", 0x80) && 4841 acpi_evalf(NULL, NULL, "\\VSDS", "vdd", status, 1); 4842 break; 4843 default: 4844 return -ENOSYS; 4845 } 4846 4847 return (res) ? 0 : -EIO; 4848 } 4849 4850 static int video_autosw_get(void) 4851 { 4852 int autosw = 0; 4853 4854 switch (video_supported) { 4855 case TPACPI_VIDEO_570: 4856 if (!acpi_evalf(vid_handle, &autosw, "SWIT", "d")) 4857 return -EIO; 4858 break; 4859 case TPACPI_VIDEO_770: 4860 case TPACPI_VIDEO_NEW: 4861 if (!acpi_evalf(vid_handle, &autosw, "^VDEE", "d")) 4862 return -EIO; 4863 break; 4864 default: 4865 return -ENOSYS; 4866 } 4867 4868 return autosw & 1; 4869 } 4870 4871 static int video_autosw_set(int enable) 4872 { 4873 if (!acpi_evalf(vid_handle, NULL, "_DOS", "vd", (enable) ? 1 : 0)) 4874 return -EIO; 4875 return 0; 4876 } 4877 4878 static int video_outputsw_cycle(void) 4879 { 4880 int autosw = video_autosw_get(); 4881 int res; 4882 4883 if (autosw < 0) 4884 return autosw; 4885 4886 switch (video_supported) { 4887 case TPACPI_VIDEO_570: 4888 res = video_autosw_set(1); 4889 if (res) 4890 return res; 4891 res = acpi_evalf(ec_handle, NULL, "_Q16", "v"); 4892 break; 4893 case TPACPI_VIDEO_770: 4894 case TPACPI_VIDEO_NEW: 4895 res = video_autosw_set(1); 4896 if (res) 4897 return res; 4898 res = acpi_evalf(vid_handle, NULL, "VSWT", "v"); 4899 break; 4900 default: 4901 return -ENOSYS; 4902 } 4903 if (!autosw && video_autosw_set(autosw)) { 4904 pr_err("video auto-switch left enabled due to error\n"); 4905 return -EIO; 4906 } 4907 4908 return (res) ? 0 : -EIO; 4909 } 4910 4911 static int video_expand_toggle(void) 4912 { 4913 switch (video_supported) { 4914 case TPACPI_VIDEO_570: 4915 return acpi_evalf(ec_handle, NULL, "_Q17", "v") ? 4916 0 : -EIO; 4917 case TPACPI_VIDEO_770: 4918 return acpi_evalf(vid_handle, NULL, "VEXP", "v") ? 4919 0 : -EIO; 4920 case TPACPI_VIDEO_NEW: 4921 return acpi_evalf(NULL, NULL, "\\VEXP", "v") ? 4922 0 : -EIO; 4923 default: 4924 return -ENOSYS; 4925 } 4926 /* not reached */ 4927 } 4928 4929 static int video_read(struct seq_file *m) 4930 { 4931 int status, autosw; 4932 4933 if (video_supported == TPACPI_VIDEO_NONE) { 4934 seq_printf(m, "status:\t\tnot supported\n"); 4935 return 0; 4936 } 4937 4938 /* Even reads can crash X.org, so... */ 4939 if (!capable(CAP_SYS_ADMIN)) 4940 return -EPERM; 4941 4942 status = video_outputsw_get(); 4943 if (status < 0) 4944 return status; 4945 4946 autosw = video_autosw_get(); 4947 if (autosw < 0) 4948 return autosw; 4949 4950 seq_printf(m, "status:\t\tsupported\n"); 4951 seq_printf(m, "lcd:\t\t%s\n", str_enabled_disabled(status & BIT(0))); 4952 seq_printf(m, "crt:\t\t%s\n", str_enabled_disabled(status & BIT(1))); 4953 if (video_supported == TPACPI_VIDEO_NEW) 4954 seq_printf(m, "dvi:\t\t%s\n", str_enabled_disabled(status & BIT(3))); 4955 seq_printf(m, "auto:\t\t%s\n", str_enabled_disabled(autosw & BIT(0))); 4956 seq_printf(m, "commands:\tlcd_enable, lcd_disable\n"); 4957 seq_printf(m, "commands:\tcrt_enable, crt_disable\n"); 4958 if (video_supported == TPACPI_VIDEO_NEW) 4959 seq_printf(m, "commands:\tdvi_enable, dvi_disable\n"); 4960 seq_printf(m, "commands:\tauto_enable, auto_disable\n"); 4961 seq_printf(m, "commands:\tvideo_switch, expand_toggle\n"); 4962 4963 return 0; 4964 } 4965 4966 static int video_write(char *buf) 4967 { 4968 char *cmd; 4969 int enable, disable, status; 4970 int res; 4971 4972 if (video_supported == TPACPI_VIDEO_NONE) 4973 return -ENODEV; 4974 4975 /* Even reads can crash X.org, let alone writes... */ 4976 if (!capable(CAP_SYS_ADMIN)) 4977 return -EPERM; 4978 4979 enable = 0; 4980 disable = 0; 4981 4982 while ((cmd = strsep(&buf, ","))) { 4983 if (strstarts(cmd, "lcd_enable")) { 4984 enable |= TP_ACPI_VIDEO_S_LCD; 4985 } else if (strstarts(cmd, "lcd_disable")) { 4986 disable |= TP_ACPI_VIDEO_S_LCD; 4987 } else if (strstarts(cmd, "crt_enable")) { 4988 enable |= TP_ACPI_VIDEO_S_CRT; 4989 } else if (strstarts(cmd, "crt_disable")) { 4990 disable |= TP_ACPI_VIDEO_S_CRT; 4991 } else if (video_supported == TPACPI_VIDEO_NEW && 4992 strstarts(cmd, "dvi_enable")) { 4993 enable |= TP_ACPI_VIDEO_S_DVI; 4994 } else if (video_supported == TPACPI_VIDEO_NEW && 4995 strstarts(cmd, "dvi_disable")) { 4996 disable |= TP_ACPI_VIDEO_S_DVI; 4997 } else if (strstarts(cmd, "auto_enable")) { 4998 res = video_autosw_set(1); 4999 if (res) 5000 return res; 5001 } else if (strstarts(cmd, "auto_disable")) { 5002 res = video_autosw_set(0); 5003 if (res) 5004 return res; 5005 } else if (strstarts(cmd, "video_switch")) { 5006 res = video_outputsw_cycle(); 5007 if (res) 5008 return res; 5009 } else if (strstarts(cmd, "expand_toggle")) { 5010 res = video_expand_toggle(); 5011 if (res) 5012 return res; 5013 } else 5014 return -EINVAL; 5015 } 5016 5017 if (enable || disable) { 5018 status = video_outputsw_get(); 5019 if (status < 0) 5020 return status; 5021 res = video_outputsw_set((status & ~disable) | enable); 5022 if (res) 5023 return res; 5024 } 5025 5026 return 0; 5027 } 5028 5029 static struct ibm_struct video_driver_data = { 5030 .name = "video", 5031 .read = video_read, 5032 .write = video_write, 5033 .exit = video_exit, 5034 }; 5035 5036 #endif /* CONFIG_THINKPAD_ACPI_VIDEO */ 5037 5038 /************************************************************************* 5039 * Keyboard backlight subdriver 5040 */ 5041 5042 static enum led_brightness kbdlight_brightness; 5043 static DEFINE_MUTEX(kbdlight_mutex); 5044 5045 static int kbdlight_set_level(int level) 5046 { 5047 int ret = 0; 5048 5049 if (!hkey_handle) 5050 return -ENXIO; 5051 5052 mutex_lock(&kbdlight_mutex); 5053 5054 if (!acpi_evalf(hkey_handle, NULL, "MLCS", "dd", level)) 5055 ret = -EIO; 5056 else 5057 kbdlight_brightness = level; 5058 5059 mutex_unlock(&kbdlight_mutex); 5060 5061 return ret; 5062 } 5063 5064 static int kbdlight_get_level(void) 5065 { 5066 int status = 0; 5067 5068 if (!hkey_handle) 5069 return -ENXIO; 5070 5071 if (!acpi_evalf(hkey_handle, &status, "MLCG", "dd", 0)) 5072 return -EIO; 5073 5074 if (status < 0) 5075 return status; 5076 5077 return status & 0x3; 5078 } 5079 5080 static bool kbdlight_is_supported(void) 5081 { 5082 int status = 0; 5083 5084 if (!hkey_handle) 5085 return false; 5086 5087 if (!acpi_has_method(hkey_handle, "MLCG")) { 5088 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG is unavailable\n"); 5089 return false; 5090 } 5091 5092 if (!acpi_evalf(hkey_handle, &status, "MLCG", "qdd", 0)) { 5093 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG failed\n"); 5094 return false; 5095 } 5096 5097 if (status < 0) { 5098 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG err: %d\n", status); 5099 return false; 5100 } 5101 5102 vdbg_printk(TPACPI_DBG_INIT, "kbdlight MLCG returned 0x%x\n", status); 5103 /* 5104 * Guessed test for keyboard backlight: 5105 * 5106 * Machines with backlight keyboard return: 5107 * b010100000010000000XX - ThinkPad X1 Carbon 3rd 5108 * b110100010010000000XX - ThinkPad x230 5109 * b010100000010000000XX - ThinkPad x240 5110 * b010100000010000000XX - ThinkPad W541 5111 * (XX is current backlight level) 5112 * 5113 * Machines without backlight keyboard return: 5114 * b10100001000000000000 - ThinkPad x230 5115 * b10110001000000000000 - ThinkPad E430 5116 * b00000000000000000000 - ThinkPad E450 5117 * 5118 * Candidate BITs for detection test (XOR): 5119 * b01000000001000000000 5120 * ^ 5121 */ 5122 return status & BIT(9); 5123 } 5124 5125 static int kbdlight_sysfs_set(struct led_classdev *led_cdev, 5126 enum led_brightness brightness) 5127 { 5128 return kbdlight_set_level(brightness); 5129 } 5130 5131 static enum led_brightness kbdlight_sysfs_get(struct led_classdev *led_cdev) 5132 { 5133 int level; 5134 5135 level = kbdlight_get_level(); 5136 if (level < 0) 5137 return 0; 5138 5139 return level; 5140 } 5141 5142 static struct tpacpi_led_classdev tpacpi_led_kbdlight = { 5143 .led_classdev = { 5144 .name = "tpacpi::kbd_backlight", 5145 .max_brightness = 2, 5146 .flags = LED_BRIGHT_HW_CHANGED, 5147 .brightness_set_blocking = &kbdlight_sysfs_set, 5148 .brightness_get = &kbdlight_sysfs_get, 5149 } 5150 }; 5151 5152 static int __init kbdlight_init(struct ibm_init_struct *iibm) 5153 { 5154 int rc; 5155 5156 vdbg_printk(TPACPI_DBG_INIT, "initializing kbdlight subdriver\n"); 5157 5158 TPACPI_ACPIHANDLE_INIT(hkey); 5159 5160 if (!kbdlight_is_supported()) { 5161 tp_features.kbdlight = 0; 5162 vdbg_printk(TPACPI_DBG_INIT, "kbdlight is unsupported\n"); 5163 return -ENODEV; 5164 } 5165 5166 kbdlight_brightness = kbdlight_sysfs_get(NULL); 5167 tp_features.kbdlight = 1; 5168 5169 rc = led_classdev_register(&tpacpi_pdev->dev, 5170 &tpacpi_led_kbdlight.led_classdev); 5171 if (rc < 0) { 5172 tp_features.kbdlight = 0; 5173 return rc; 5174 } 5175 5176 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask | 5177 TP_ACPI_HKEY_KBD_LIGHT_MASK); 5178 return 0; 5179 } 5180 5181 static void kbdlight_exit(void) 5182 { 5183 led_classdev_unregister(&tpacpi_led_kbdlight.led_classdev); 5184 } 5185 5186 static int kbdlight_set_level_and_update(int level) 5187 { 5188 int ret; 5189 struct led_classdev *led_cdev; 5190 5191 ret = kbdlight_set_level(level); 5192 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5193 5194 if (ret == 0 && !(led_cdev->flags & LED_SUSPENDED)) 5195 led_cdev->brightness = level; 5196 5197 return ret; 5198 } 5199 5200 static int kbdlight_read(struct seq_file *m) 5201 { 5202 int level; 5203 5204 if (!tp_features.kbdlight) { 5205 seq_printf(m, "status:\t\tnot supported\n"); 5206 } else { 5207 level = kbdlight_get_level(); 5208 if (level < 0) 5209 seq_printf(m, "status:\t\terror %d\n", level); 5210 else 5211 seq_printf(m, "status:\t\t%d\n", level); 5212 seq_printf(m, "commands:\t0, 1, 2\n"); 5213 } 5214 5215 return 0; 5216 } 5217 5218 static int kbdlight_write(char *buf) 5219 { 5220 char *cmd; 5221 int res, level = -EINVAL; 5222 5223 if (!tp_features.kbdlight) 5224 return -ENODEV; 5225 5226 while ((cmd = strsep(&buf, ","))) { 5227 res = kstrtoint(cmd, 10, &level); 5228 if (res < 0) 5229 return res; 5230 } 5231 5232 if (level >= 3 || level < 0) 5233 return -EINVAL; 5234 5235 return kbdlight_set_level_and_update(level); 5236 } 5237 5238 static void kbdlight_suspend(void) 5239 { 5240 struct led_classdev *led_cdev; 5241 5242 if (!tp_features.kbdlight) 5243 return; 5244 5245 led_cdev = &tpacpi_led_kbdlight.led_classdev; 5246 led_update_brightness(led_cdev); 5247 led_classdev_suspend(led_cdev); 5248 } 5249 5250 static void kbdlight_resume(void) 5251 { 5252 if (!tp_features.kbdlight) 5253 return; 5254 5255 led_classdev_resume(&tpacpi_led_kbdlight.led_classdev); 5256 } 5257 5258 static struct ibm_struct kbdlight_driver_data = { 5259 .name = "kbdlight", 5260 .read = kbdlight_read, 5261 .write = kbdlight_write, 5262 .suspend = kbdlight_suspend, 5263 .resume = kbdlight_resume, 5264 .exit = kbdlight_exit, 5265 }; 5266 5267 /************************************************************************* 5268 * Light (thinklight) subdriver 5269 */ 5270 5271 TPACPI_HANDLE(lght, root, "\\LGHT"); /* A21e, A2xm/p, T20-22, X20-21 */ 5272 TPACPI_HANDLE(ledb, ec, "LEDB"); /* G4x */ 5273 5274 static int light_get_status(void) 5275 { 5276 int status = 0; 5277 5278 if (tp_features.light_status) { 5279 if (!acpi_evalf(ec_handle, &status, "KBLT", "d")) 5280 return -EIO; 5281 return (!!status); 5282 } 5283 5284 return -ENXIO; 5285 } 5286 5287 static int light_set_status(int status) 5288 { 5289 int rc; 5290 5291 if (tp_features.light) { 5292 if (cmos_handle) { 5293 rc = acpi_evalf(cmos_handle, NULL, NULL, "vd", 5294 (status) ? 5295 TP_CMOS_THINKLIGHT_ON : 5296 TP_CMOS_THINKLIGHT_OFF); 5297 } else { 5298 rc = acpi_evalf(lght_handle, NULL, NULL, "vd", 5299 (status) ? 1 : 0); 5300 } 5301 return (rc) ? 0 : -EIO; 5302 } 5303 5304 return -ENXIO; 5305 } 5306 5307 static int light_sysfs_set(struct led_classdev *led_cdev, 5308 enum led_brightness brightness) 5309 { 5310 return light_set_status((brightness != LED_OFF) ? 5311 TPACPI_LED_ON : TPACPI_LED_OFF); 5312 } 5313 5314 static enum led_brightness light_sysfs_get(struct led_classdev *led_cdev) 5315 { 5316 return (light_get_status() == 1) ? LED_ON : LED_OFF; 5317 } 5318 5319 static struct tpacpi_led_classdev tpacpi_led_thinklight = { 5320 .led_classdev = { 5321 .name = "tpacpi::thinklight", 5322 .max_brightness = 1, 5323 .brightness_set_blocking = &light_sysfs_set, 5324 .brightness_get = &light_sysfs_get, 5325 } 5326 }; 5327 5328 static int __init light_init(struct ibm_init_struct *iibm) 5329 { 5330 int rc; 5331 5332 vdbg_printk(TPACPI_DBG_INIT, "initializing light subdriver\n"); 5333 5334 if (tpacpi_is_ibm()) { 5335 TPACPI_ACPIHANDLE_INIT(ledb); 5336 TPACPI_ACPIHANDLE_INIT(lght); 5337 } 5338 TPACPI_ACPIHANDLE_INIT(cmos); 5339 5340 /* light not supported on 570, 600e/x, 770e, 770x, G4x, R30, R31 */ 5341 tp_features.light = (cmos_handle || lght_handle) && !ledb_handle; 5342 5343 if (tp_features.light) 5344 /* light status not supported on 5345 570, 600e/x, 770e, 770x, G4x, R30, R31, R32, X20 */ 5346 tp_features.light_status = 5347 acpi_evalf(ec_handle, NULL, "KBLT", "qv"); 5348 5349 vdbg_printk(TPACPI_DBG_INIT, "light is %s, light status is %s\n", 5350 str_supported(tp_features.light), 5351 str_supported(tp_features.light_status)); 5352 5353 if (!tp_features.light) 5354 return -ENODEV; 5355 5356 rc = led_classdev_register(&tpacpi_pdev->dev, 5357 &tpacpi_led_thinklight.led_classdev); 5358 5359 if (rc < 0) { 5360 tp_features.light = 0; 5361 tp_features.light_status = 0; 5362 } else { 5363 rc = 0; 5364 } 5365 5366 return rc; 5367 } 5368 5369 static void light_exit(void) 5370 { 5371 led_classdev_unregister(&tpacpi_led_thinklight.led_classdev); 5372 } 5373 5374 static int light_read(struct seq_file *m) 5375 { 5376 int status; 5377 5378 if (!tp_features.light) { 5379 seq_printf(m, "status:\t\tnot supported\n"); 5380 } else if (!tp_features.light_status) { 5381 seq_printf(m, "status:\t\tunknown\n"); 5382 seq_printf(m, "commands:\ton, off\n"); 5383 } else { 5384 status = light_get_status(); 5385 if (status < 0) 5386 return status; 5387 seq_printf(m, "status:\t\t%s\n", str_on_off(status & BIT(0))); 5388 seq_printf(m, "commands:\ton, off\n"); 5389 } 5390 5391 return 0; 5392 } 5393 5394 static int light_write(char *buf) 5395 { 5396 char *cmd; 5397 int newstatus = 0; 5398 5399 if (!tp_features.light) 5400 return -ENODEV; 5401 5402 while ((cmd = strsep(&buf, ","))) { 5403 if (strstarts(cmd, "on")) { 5404 newstatus = 1; 5405 } else if (strstarts(cmd, "off")) { 5406 newstatus = 0; 5407 } else 5408 return -EINVAL; 5409 } 5410 5411 return light_set_status(newstatus); 5412 } 5413 5414 static struct ibm_struct light_driver_data = { 5415 .name = "light", 5416 .read = light_read, 5417 .write = light_write, 5418 .exit = light_exit, 5419 }; 5420 5421 /************************************************************************* 5422 * CMOS subdriver 5423 */ 5424 5425 /* sysfs cmos_command -------------------------------------------------- */ 5426 static ssize_t cmos_command_store(struct device *dev, 5427 struct device_attribute *attr, 5428 const char *buf, size_t count) 5429 { 5430 unsigned long cmos_cmd; 5431 int res; 5432 5433 if (parse_strtoul(buf, 21, &cmos_cmd)) 5434 return -EINVAL; 5435 5436 res = issue_thinkpad_cmos_command(cmos_cmd); 5437 return (res) ? res : count; 5438 } 5439 5440 static DEVICE_ATTR_WO(cmos_command); 5441 5442 static struct attribute *cmos_attributes[] = { 5443 &dev_attr_cmos_command.attr, 5444 NULL 5445 }; 5446 5447 static umode_t cmos_attr_is_visible(struct kobject *kobj, 5448 struct attribute *attr, int n) 5449 { 5450 return cmos_handle ? attr->mode : 0; 5451 } 5452 5453 static const struct attribute_group cmos_attr_group = { 5454 .is_visible = cmos_attr_is_visible, 5455 .attrs = cmos_attributes, 5456 }; 5457 5458 /* --------------------------------------------------------------------- */ 5459 5460 static int __init cmos_init(struct ibm_init_struct *iibm) 5461 { 5462 vdbg_printk(TPACPI_DBG_INIT, 5463 "initializing cmos commands subdriver\n"); 5464 5465 TPACPI_ACPIHANDLE_INIT(cmos); 5466 5467 vdbg_printk(TPACPI_DBG_INIT, "cmos commands are %s\n", 5468 str_supported(cmos_handle != NULL)); 5469 5470 return cmos_handle ? 0 : -ENODEV; 5471 } 5472 5473 static int cmos_read(struct seq_file *m) 5474 { 5475 /* cmos not supported on 570, 600e/x, 770e, 770x, A21e, A2xm/p, 5476 R30, R31, T20-22, X20-21 */ 5477 if (!cmos_handle) 5478 seq_printf(m, "status:\t\tnot supported\n"); 5479 else { 5480 seq_printf(m, "status:\t\tsupported\n"); 5481 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-21)\n"); 5482 } 5483 5484 return 0; 5485 } 5486 5487 static int cmos_write(char *buf) 5488 { 5489 char *cmd; 5490 int cmos_cmd, res; 5491 5492 while ((cmd = strsep(&buf, ","))) { 5493 if (sscanf(cmd, "%u", &cmos_cmd) == 1 && 5494 cmos_cmd >= 0 && cmos_cmd <= 21) { 5495 /* cmos_cmd set */ 5496 } else 5497 return -EINVAL; 5498 5499 res = issue_thinkpad_cmos_command(cmos_cmd); 5500 if (res) 5501 return res; 5502 } 5503 5504 return 0; 5505 } 5506 5507 static struct ibm_struct cmos_driver_data = { 5508 .name = "cmos", 5509 .read = cmos_read, 5510 .write = cmos_write, 5511 }; 5512 5513 /************************************************************************* 5514 * LED subdriver 5515 */ 5516 5517 enum led_access_mode { 5518 TPACPI_LED_NONE = 0, 5519 TPACPI_LED_570, /* 570 */ 5520 TPACPI_LED_OLD, /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5521 TPACPI_LED_NEW, /* all others */ 5522 }; 5523 5524 enum { /* For TPACPI_LED_OLD */ 5525 TPACPI_LED_EC_HLCL = 0x0c, /* EC reg to get led to power on */ 5526 TPACPI_LED_EC_HLBL = 0x0d, /* EC reg to blink a lit led */ 5527 TPACPI_LED_EC_HLMS = 0x0e, /* EC reg to select led to command */ 5528 }; 5529 5530 static enum led_access_mode led_supported; 5531 5532 static acpi_handle led_handle; 5533 5534 #define TPACPI_LED_NUMLEDS 16 5535 static struct tpacpi_led_classdev *tpacpi_leds; 5536 static enum led_status_t tpacpi_led_state_cache[TPACPI_LED_NUMLEDS]; 5537 static const char * const tpacpi_led_names[TPACPI_LED_NUMLEDS] = { 5538 /* there's a limit of 19 chars + NULL before 2.6.26 */ 5539 "tpacpi::power", 5540 "tpacpi:orange:batt", 5541 "tpacpi:green:batt", 5542 "tpacpi::dock_active", 5543 "tpacpi::bay_active", 5544 "tpacpi::dock_batt", 5545 "tpacpi::unknown_led", 5546 "tpacpi::standby", 5547 "tpacpi::dock_status1", 5548 "tpacpi::dock_status2", 5549 "tpacpi::lid_logo_dot", 5550 "tpacpi::unknown_led3", 5551 "tpacpi::thinkvantage", 5552 }; 5553 #define TPACPI_SAFE_LEDS 0x1481U 5554 5555 static inline bool tpacpi_is_led_restricted(const unsigned int led) 5556 { 5557 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5558 return false; 5559 #else 5560 return (1U & (TPACPI_SAFE_LEDS >> led)) == 0; 5561 #endif 5562 } 5563 5564 static int led_get_status(const unsigned int led) 5565 { 5566 int status; 5567 enum led_status_t led_s; 5568 5569 switch (led_supported) { 5570 case TPACPI_LED_570: 5571 if (!acpi_evalf(ec_handle, 5572 &status, "GLED", "dd", 1 << led)) 5573 return -EIO; 5574 led_s = (status == 0) ? 5575 TPACPI_LED_OFF : 5576 ((status == 1) ? 5577 TPACPI_LED_ON : 5578 TPACPI_LED_BLINK); 5579 tpacpi_led_state_cache[led] = led_s; 5580 return led_s; 5581 default: 5582 return -ENXIO; 5583 } 5584 5585 /* not reached */ 5586 } 5587 5588 static int led_set_status(const unsigned int led, 5589 const enum led_status_t ledstatus) 5590 { 5591 /* off, on, blink. Index is led_status_t */ 5592 static const unsigned int led_sled_arg1[] = { 0, 1, 3 }; 5593 static const unsigned int led_led_arg1[] = { 0, 0x80, 0xc0 }; 5594 5595 int rc = 0; 5596 5597 switch (led_supported) { 5598 case TPACPI_LED_570: 5599 /* 570 */ 5600 if (unlikely(led > 7)) 5601 return -EINVAL; 5602 if (unlikely(tpacpi_is_led_restricted(led))) 5603 return -EPERM; 5604 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5605 (1 << led), led_sled_arg1[ledstatus])) 5606 return -EIO; 5607 break; 5608 case TPACPI_LED_OLD: 5609 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20 */ 5610 if (unlikely(led > 7)) 5611 return -EINVAL; 5612 if (unlikely(tpacpi_is_led_restricted(led))) 5613 return -EPERM; 5614 rc = ec_write(TPACPI_LED_EC_HLMS, (1 << led)); 5615 if (rc >= 0) 5616 rc = ec_write(TPACPI_LED_EC_HLBL, 5617 (ledstatus == TPACPI_LED_BLINK) << led); 5618 if (rc >= 0) 5619 rc = ec_write(TPACPI_LED_EC_HLCL, 5620 (ledstatus != TPACPI_LED_OFF) << led); 5621 break; 5622 case TPACPI_LED_NEW: 5623 /* all others */ 5624 if (unlikely(led >= TPACPI_LED_NUMLEDS)) 5625 return -EINVAL; 5626 if (unlikely(tpacpi_is_led_restricted(led))) 5627 return -EPERM; 5628 if (!acpi_evalf(led_handle, NULL, NULL, "vdd", 5629 led, led_led_arg1[ledstatus])) 5630 return -EIO; 5631 break; 5632 default: 5633 return -ENXIO; 5634 } 5635 5636 if (!rc) 5637 tpacpi_led_state_cache[led] = ledstatus; 5638 5639 return rc; 5640 } 5641 5642 static int led_sysfs_set(struct led_classdev *led_cdev, 5643 enum led_brightness brightness) 5644 { 5645 struct tpacpi_led_classdev *data = container_of(led_cdev, 5646 struct tpacpi_led_classdev, led_classdev); 5647 enum led_status_t new_state; 5648 5649 if (brightness == LED_OFF) 5650 new_state = TPACPI_LED_OFF; 5651 else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK) 5652 new_state = TPACPI_LED_ON; 5653 else 5654 new_state = TPACPI_LED_BLINK; 5655 5656 return led_set_status(data->led, new_state); 5657 } 5658 5659 static int led_sysfs_blink_set(struct led_classdev *led_cdev, 5660 unsigned long *delay_on, unsigned long *delay_off) 5661 { 5662 struct tpacpi_led_classdev *data = container_of(led_cdev, 5663 struct tpacpi_led_classdev, led_classdev); 5664 5665 /* Can we choose the flash rate? */ 5666 if (*delay_on == 0 && *delay_off == 0) { 5667 /* yes. set them to the hardware blink rate (1 Hz) */ 5668 *delay_on = 500; /* ms */ 5669 *delay_off = 500; /* ms */ 5670 } else if ((*delay_on != 500) || (*delay_off != 500)) 5671 return -EINVAL; 5672 5673 return led_set_status(data->led, TPACPI_LED_BLINK); 5674 } 5675 5676 static enum led_brightness led_sysfs_get(struct led_classdev *led_cdev) 5677 { 5678 int rc; 5679 5680 struct tpacpi_led_classdev *data = container_of(led_cdev, 5681 struct tpacpi_led_classdev, led_classdev); 5682 5683 rc = led_get_status(data->led); 5684 5685 if (rc == TPACPI_LED_OFF || rc < 0) 5686 rc = LED_OFF; /* no error handling in led class :( */ 5687 else 5688 rc = LED_FULL; 5689 5690 return rc; 5691 } 5692 5693 static void led_exit(void) 5694 { 5695 unsigned int i; 5696 5697 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) 5698 led_classdev_unregister(&tpacpi_leds[i].led_classdev); 5699 5700 kfree(tpacpi_leds); 5701 } 5702 5703 static int __init tpacpi_init_led(unsigned int led) 5704 { 5705 /* LEDs with no name don't get registered */ 5706 if (!tpacpi_led_names[led]) 5707 return 0; 5708 5709 tpacpi_leds[led].led_classdev.brightness_set_blocking = &led_sysfs_set; 5710 tpacpi_leds[led].led_classdev.blink_set = &led_sysfs_blink_set; 5711 if (led_supported == TPACPI_LED_570) 5712 tpacpi_leds[led].led_classdev.brightness_get = &led_sysfs_get; 5713 5714 tpacpi_leds[led].led_classdev.name = tpacpi_led_names[led]; 5715 tpacpi_leds[led].led_classdev.flags = LED_RETAIN_AT_SHUTDOWN; 5716 tpacpi_leds[led].led = led; 5717 5718 return led_classdev_register(&tpacpi_pdev->dev, &tpacpi_leds[led].led_classdev); 5719 } 5720 5721 static const struct tpacpi_quirk led_useful_qtable[] __initconst = { 5722 TPACPI_Q_IBM('1', 'E', 0x009f), /* A30 */ 5723 TPACPI_Q_IBM('1', 'N', 0x009f), /* A31 */ 5724 TPACPI_Q_IBM('1', 'G', 0x009f), /* A31 */ 5725 5726 TPACPI_Q_IBM('1', 'I', 0x0097), /* T30 */ 5727 TPACPI_Q_IBM('1', 'R', 0x0097), /* T40, T41, T42, R50, R51 */ 5728 TPACPI_Q_IBM('7', '0', 0x0097), /* T43, R52 */ 5729 TPACPI_Q_IBM('1', 'Y', 0x0097), /* T43 */ 5730 TPACPI_Q_IBM('1', 'W', 0x0097), /* R50e */ 5731 TPACPI_Q_IBM('1', 'V', 0x0097), /* R51 */ 5732 TPACPI_Q_IBM('7', '8', 0x0097), /* R51e */ 5733 TPACPI_Q_IBM('7', '6', 0x0097), /* R52 */ 5734 5735 TPACPI_Q_IBM('1', 'K', 0x00bf), /* X30 */ 5736 TPACPI_Q_IBM('1', 'Q', 0x00bf), /* X31, X32 */ 5737 TPACPI_Q_IBM('1', 'U', 0x00bf), /* X40 */ 5738 TPACPI_Q_IBM('7', '4', 0x00bf), /* X41 */ 5739 TPACPI_Q_IBM('7', '5', 0x00bf), /* X41t */ 5740 5741 TPACPI_Q_IBM('7', '9', 0x1f97), /* T60 (1) */ 5742 TPACPI_Q_IBM('7', '7', 0x1f97), /* Z60* (1) */ 5743 TPACPI_Q_IBM('7', 'F', 0x1f97), /* Z61* (1) */ 5744 TPACPI_Q_IBM('7', 'B', 0x1fb7), /* X60 (1) */ 5745 5746 /* (1) - may have excess leds enabled on MSB */ 5747 5748 /* Defaults (order matters, keep last, don't reorder!) */ 5749 { /* Lenovo */ 5750 .vendor = PCI_VENDOR_ID_LENOVO, 5751 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5752 .quirks = 0x1fffU, 5753 }, 5754 { /* IBM ThinkPads with no EC version string */ 5755 .vendor = PCI_VENDOR_ID_IBM, 5756 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_UNKNOWN, 5757 .quirks = 0x00ffU, 5758 }, 5759 { /* IBM ThinkPads with EC version string */ 5760 .vendor = PCI_VENDOR_ID_IBM, 5761 .bios = TPACPI_MATCH_ANY, .ec = TPACPI_MATCH_ANY, 5762 .quirks = 0x00bfU, 5763 }, 5764 }; 5765 5766 static enum led_access_mode __init led_init_detect_mode(void) 5767 { 5768 acpi_status status; 5769 5770 if (tpacpi_is_ibm()) { 5771 /* 570 */ 5772 status = acpi_get_handle(ec_handle, "SLED", &led_handle); 5773 if (ACPI_SUCCESS(status)) 5774 return TPACPI_LED_570; 5775 5776 /* 600e/x, 770e, 770x, A21e, A2xm/p, T20-22, X20-21 */ 5777 status = acpi_get_handle(ec_handle, "SYSL", &led_handle); 5778 if (ACPI_SUCCESS(status)) 5779 return TPACPI_LED_OLD; 5780 } 5781 5782 /* most others */ 5783 status = acpi_get_handle(ec_handle, "LED", &led_handle); 5784 if (ACPI_SUCCESS(status)) 5785 return TPACPI_LED_NEW; 5786 5787 /* R30, R31, and unknown firmwares */ 5788 led_handle = NULL; 5789 return TPACPI_LED_NONE; 5790 } 5791 5792 static int __init led_init(struct ibm_init_struct *iibm) 5793 { 5794 unsigned int i; 5795 int rc; 5796 unsigned long useful_leds; 5797 5798 vdbg_printk(TPACPI_DBG_INIT, "initializing LED subdriver\n"); 5799 5800 led_supported = led_init_detect_mode(); 5801 5802 if (led_supported != TPACPI_LED_NONE) { 5803 useful_leds = tpacpi_check_quirks(led_useful_qtable, 5804 ARRAY_SIZE(led_useful_qtable)); 5805 5806 if (!useful_leds) { 5807 led_handle = NULL; 5808 led_supported = TPACPI_LED_NONE; 5809 } 5810 } 5811 5812 vdbg_printk(TPACPI_DBG_INIT, "LED commands are %s, mode %d\n", 5813 str_supported(led_supported), led_supported); 5814 5815 if (led_supported == TPACPI_LED_NONE) 5816 return -ENODEV; 5817 5818 tpacpi_leds = kcalloc(TPACPI_LED_NUMLEDS, sizeof(*tpacpi_leds), 5819 GFP_KERNEL); 5820 if (!tpacpi_leds) { 5821 pr_err("Out of memory for LED data\n"); 5822 return -ENOMEM; 5823 } 5824 5825 for (i = 0; i < TPACPI_LED_NUMLEDS; i++) { 5826 tpacpi_leds[i].led = -1; 5827 5828 if (!tpacpi_is_led_restricted(i) && test_bit(i, &useful_leds)) { 5829 rc = tpacpi_init_led(i); 5830 if (rc < 0) { 5831 led_exit(); 5832 return rc; 5833 } 5834 } 5835 } 5836 5837 #ifdef CONFIG_THINKPAD_ACPI_UNSAFE_LEDS 5838 pr_notice("warning: userspace override of important firmware LEDs is enabled\n"); 5839 #endif 5840 return 0; 5841 } 5842 5843 #define str_led_status(s) ((s) >= TPACPI_LED_BLINK ? "blinking" : str_on_off(s)) 5844 5845 static int led_read(struct seq_file *m) 5846 { 5847 if (!led_supported) { 5848 seq_printf(m, "status:\t\tnot supported\n"); 5849 return 0; 5850 } 5851 seq_printf(m, "status:\t\tsupported\n"); 5852 5853 if (led_supported == TPACPI_LED_570) { 5854 /* 570 */ 5855 int i, status; 5856 for (i = 0; i < 8; i++) { 5857 status = led_get_status(i); 5858 if (status < 0) 5859 return -EIO; 5860 seq_printf(m, "%d:\t\t%s\n", i, str_led_status(status)); 5861 } 5862 } 5863 5864 seq_printf(m, "commands:\t<led> on, <led> off, <led> blink (<led> is 0-15)\n"); 5865 5866 return 0; 5867 } 5868 5869 static int led_write(char *buf) 5870 { 5871 char *cmd; 5872 int led, rc; 5873 enum led_status_t s; 5874 5875 if (!led_supported) 5876 return -ENODEV; 5877 5878 while ((cmd = strsep(&buf, ","))) { 5879 if (sscanf(cmd, "%d", &led) != 1) 5880 return -EINVAL; 5881 5882 if (led < 0 || led > (TPACPI_LED_NUMLEDS - 1)) 5883 return -ENODEV; 5884 5885 if (tpacpi_leds[led].led < 0) 5886 return -ENODEV; 5887 5888 if (strstr(cmd, "off")) { 5889 s = TPACPI_LED_OFF; 5890 } else if (strstr(cmd, "on")) { 5891 s = TPACPI_LED_ON; 5892 } else if (strstr(cmd, "blink")) { 5893 s = TPACPI_LED_BLINK; 5894 } else { 5895 return -EINVAL; 5896 } 5897 5898 rc = led_set_status(led, s); 5899 if (rc < 0) 5900 return rc; 5901 } 5902 5903 return 0; 5904 } 5905 5906 static struct ibm_struct led_driver_data = { 5907 .name = "led", 5908 .read = led_read, 5909 .write = led_write, 5910 .exit = led_exit, 5911 }; 5912 5913 /************************************************************************* 5914 * Beep subdriver 5915 */ 5916 5917 TPACPI_HANDLE(beep, ec, "BEEP"); /* all except R30, R31 */ 5918 5919 #define TPACPI_BEEP_Q1 0x0001 5920 5921 static const struct tpacpi_quirk beep_quirk_table[] __initconst = { 5922 TPACPI_Q_IBM('I', 'M', TPACPI_BEEP_Q1), /* 570 */ 5923 TPACPI_Q_IBM('I', 'U', TPACPI_BEEP_Q1), /* 570E - unverified */ 5924 }; 5925 5926 static int __init beep_init(struct ibm_init_struct *iibm) 5927 { 5928 unsigned long quirks; 5929 5930 vdbg_printk(TPACPI_DBG_INIT, "initializing beep subdriver\n"); 5931 5932 TPACPI_ACPIHANDLE_INIT(beep); 5933 5934 vdbg_printk(TPACPI_DBG_INIT, "beep is %s\n", 5935 str_supported(beep_handle != NULL)); 5936 5937 quirks = tpacpi_check_quirks(beep_quirk_table, 5938 ARRAY_SIZE(beep_quirk_table)); 5939 5940 tp_features.beep_needs_two_args = !!(quirks & TPACPI_BEEP_Q1); 5941 5942 return (beep_handle) ? 0 : -ENODEV; 5943 } 5944 5945 static int beep_read(struct seq_file *m) 5946 { 5947 if (!beep_handle) 5948 seq_printf(m, "status:\t\tnot supported\n"); 5949 else { 5950 seq_printf(m, "status:\t\tsupported\n"); 5951 seq_printf(m, "commands:\t<cmd> (<cmd> is 0-17)\n"); 5952 } 5953 5954 return 0; 5955 } 5956 5957 static int beep_write(char *buf) 5958 { 5959 char *cmd; 5960 int beep_cmd; 5961 5962 if (!beep_handle) 5963 return -ENODEV; 5964 5965 while ((cmd = strsep(&buf, ","))) { 5966 if (sscanf(cmd, "%u", &beep_cmd) == 1 && 5967 beep_cmd >= 0 && beep_cmd <= 17) { 5968 /* beep_cmd set */ 5969 } else 5970 return -EINVAL; 5971 if (tp_features.beep_needs_two_args) { 5972 if (!acpi_evalf(beep_handle, NULL, NULL, "vdd", 5973 beep_cmd, 0)) 5974 return -EIO; 5975 } else { 5976 if (!acpi_evalf(beep_handle, NULL, NULL, "vd", 5977 beep_cmd)) 5978 return -EIO; 5979 } 5980 } 5981 5982 return 0; 5983 } 5984 5985 static struct ibm_struct beep_driver_data = { 5986 .name = "beep", 5987 .read = beep_read, 5988 .write = beep_write, 5989 }; 5990 5991 /************************************************************************* 5992 * Thermal subdriver 5993 */ 5994 5995 enum thermal_access_mode { 5996 TPACPI_THERMAL_NONE = 0, /* No thermal support */ 5997 TPACPI_THERMAL_ACPI_TMP07, /* Use ACPI TMP0-7 */ 5998 TPACPI_THERMAL_ACPI_UPDT, /* Use ACPI TMP0-7 with UPDT */ 5999 TPACPI_THERMAL_TPEC_8, /* Use ACPI EC regs, 8 sensors */ 6000 TPACPI_THERMAL_TPEC_12, /* Use ACPI EC regs, 12 sensors */ 6001 TPACPI_THERMAL_TPEC_16, /* Use ACPI EC regs, 16 sensors */ 6002 }; 6003 6004 enum { /* TPACPI_THERMAL_TPEC_* */ 6005 TP_EC_THERMAL_TMP0 = 0x78, /* ACPI EC regs TMP 0..7 */ 6006 TP_EC_THERMAL_TMP8 = 0xC0, /* ACPI EC regs TMP 8..15 */ 6007 TP_EC_THERMAL_TMP0_NS = 0xA8, /* ACPI EC Non-Standard regs TMP 0..7 */ 6008 TP_EC_THERMAL_TMP8_NS = 0xB8, /* ACPI EC Non-standard regs TMP 8..11 */ 6009 TP_EC_FUNCREV = 0xEF, /* ACPI EC Functional revision */ 6010 TP_EC_THERMAL_TMP_NA = -128, /* ACPI EC sensor not available */ 6011 6012 TPACPI_THERMAL_SENSOR_NA = -128000, /* Sensor not available */ 6013 }; 6014 6015 6016 #define TPACPI_MAX_THERMAL_SENSORS 16 /* Max thermal sensors supported */ 6017 struct ibm_thermal_sensors_struct { 6018 s32 temp[TPACPI_MAX_THERMAL_SENSORS]; 6019 }; 6020 6021 static const struct tpacpi_quirk thermal_quirk_table[] __initconst = { 6022 /* Non-standard address for thermal registers on some ThinkPads */ 6023 TPACPI_Q_LNV3('R', '1', 'F', true), /* L13 Yoga Gen 2 */ 6024 TPACPI_Q_LNV3('N', '2', 'U', true), /* X13 Yoga Gen 2*/ 6025 TPACPI_Q_LNV3('R', '0', 'R', true), /* L380 */ 6026 TPACPI_Q_LNV3('R', '1', '5', true), /* L13 Yoga Gen 1*/ 6027 TPACPI_Q_LNV3('R', '1', '0', true), /* L390 */ 6028 TPACPI_Q_LNV3('N', '2', 'L', true), /* X13 Yoga Gen 1*/ 6029 TPACPI_Q_LNV3('R', '0', 'T', true), /* 11e Gen5 GL*/ 6030 TPACPI_Q_LNV3('R', '1', 'D', true), /* 11e Gen5 GL-R*/ 6031 TPACPI_Q_LNV3('R', '0', 'V', true), /* 11e Gen5 KL-Y*/ 6032 }; 6033 6034 static enum thermal_access_mode thermal_read_mode; 6035 static bool thermal_use_labels; 6036 static bool thermal_with_ns_address; /* Non-standard thermal reg address */ 6037 6038 /* Function to check thermal read mode */ 6039 static enum thermal_access_mode __init thermal_read_mode_check(void) 6040 { 6041 u8 t, ta1, ta2, ver = 0; 6042 int i; 6043 int acpi_tmp7; 6044 6045 acpi_tmp7 = acpi_evalf(ec_handle, NULL, "TMP7", "qv"); 6046 6047 if (thinkpad_id.ec_model) { 6048 /* 6049 * Direct EC access mode: sensors at registers 0x78-0x7F, 6050 * 0xC0-0xC7. Registers return 0x00 for non-implemented, 6051 * thermal sensors return 0x80 when not available. 6052 * 6053 * In some special cases (when Power Supply ID is 0xC2) 6054 * above rule causes thermal control issues. Offset 0xEF 6055 * determines EC version. 0xC0-0xC7 are not thermal registers 6056 * in Ver 3. 6057 */ 6058 if (!acpi_ec_read(TP_EC_FUNCREV, &ver)) 6059 pr_warn("Thinkpad ACPI EC unable to access EC version\n"); 6060 6061 /* Quirks to check non-standard EC */ 6062 thermal_with_ns_address = tpacpi_check_quirks(thermal_quirk_table, 6063 ARRAY_SIZE(thermal_quirk_table)); 6064 6065 /* Support for Thinkpads with non-standard address */ 6066 if (thermal_with_ns_address) { 6067 pr_info("ECFW with non-standard thermal registers found\n"); 6068 return TPACPI_THERMAL_TPEC_12; 6069 } 6070 6071 ta1 = ta2 = 0; 6072 for (i = 0; i < 8; i++) { 6073 if (acpi_ec_read(TP_EC_THERMAL_TMP0 + i, &t)) { 6074 ta1 |= t; 6075 } else { 6076 ta1 = 0; 6077 break; 6078 } 6079 if (ver < 3) { 6080 if (acpi_ec_read(TP_EC_THERMAL_TMP8 + i, &t)) { 6081 ta2 |= t; 6082 } else { 6083 ta1 = 0; 6084 break; 6085 } 6086 } 6087 } 6088 6089 if (ta1 == 0) { 6090 /* This is sheer paranoia, but we handle it anyway */ 6091 if (acpi_tmp7) { 6092 pr_err("ThinkPad ACPI EC access misbehaving, falling back to ACPI TMPx access mode\n"); 6093 return TPACPI_THERMAL_ACPI_TMP07; 6094 } 6095 pr_err("ThinkPad ACPI EC access misbehaving, disabling thermal sensors access\n"); 6096 return TPACPI_THERMAL_NONE; 6097 } 6098 6099 if (ver >= 3) { 6100 thermal_use_labels = true; 6101 return TPACPI_THERMAL_TPEC_8; 6102 } 6103 6104 return (ta2 != 0) ? TPACPI_THERMAL_TPEC_16 : TPACPI_THERMAL_TPEC_8; 6105 } 6106 6107 if (acpi_tmp7) { 6108 if (tpacpi_is_ibm() && acpi_evalf(ec_handle, NULL, "UPDT", "qv")) { 6109 /* 600e/x, 770e, 770x */ 6110 return TPACPI_THERMAL_ACPI_UPDT; 6111 } 6112 /* IBM/LENOVO DSDT EC.TMPx access, max 8 sensors */ 6113 return TPACPI_THERMAL_ACPI_TMP07; 6114 } 6115 6116 /* temperatures not supported on 570, G4x, R30, R31, R32 */ 6117 return TPACPI_THERMAL_NONE; 6118 } 6119 6120 /* idx is zero-based */ 6121 static int thermal_get_sensor(int idx, s32 *value) 6122 { 6123 int t; 6124 s8 tmp; 6125 char tmpi[5]; 6126 6127 t = TP_EC_THERMAL_TMP0; 6128 6129 switch (thermal_read_mode) { 6130 #if TPACPI_MAX_THERMAL_SENSORS >= 16 6131 case TPACPI_THERMAL_TPEC_16: 6132 if (idx >= 8 && idx <= 15) { 6133 t = TP_EC_THERMAL_TMP8; 6134 idx -= 8; 6135 } 6136 #endif 6137 fallthrough; 6138 case TPACPI_THERMAL_TPEC_8: 6139 if (idx <= 7) { 6140 if (!acpi_ec_read(t + idx, &tmp)) 6141 return -EIO; 6142 *value = tmp * 1000; 6143 return 0; 6144 } 6145 break; 6146 6147 /* The Non-standard EC uses 12 Thermal areas */ 6148 case TPACPI_THERMAL_TPEC_12: 6149 if (idx >= 12) 6150 return -EINVAL; 6151 6152 t = idx < 8 ? TP_EC_THERMAL_TMP0_NS + idx : 6153 TP_EC_THERMAL_TMP8_NS + (idx - 8); 6154 6155 if (!acpi_ec_read(t, &tmp)) 6156 return -EIO; 6157 6158 *value = tmp * MILLIDEGREE_PER_DEGREE; 6159 return 0; 6160 6161 case TPACPI_THERMAL_ACPI_UPDT: 6162 if (idx <= 7) { 6163 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6164 if (!acpi_evalf(ec_handle, NULL, "UPDT", "v")) 6165 return -EIO; 6166 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6167 return -EIO; 6168 *value = (t - 2732) * 100; 6169 return 0; 6170 } 6171 break; 6172 6173 case TPACPI_THERMAL_ACPI_TMP07: 6174 if (idx <= 7) { 6175 snprintf(tmpi, sizeof(tmpi), "TMP%c", '0' + idx); 6176 if (!acpi_evalf(ec_handle, &t, tmpi, "d")) 6177 return -EIO; 6178 if (t > 127 || t < -127) 6179 t = TP_EC_THERMAL_TMP_NA; 6180 *value = t * 1000; 6181 return 0; 6182 } 6183 break; 6184 6185 case TPACPI_THERMAL_NONE: 6186 default: 6187 return -ENOSYS; 6188 } 6189 6190 return -EINVAL; 6191 } 6192 6193 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s) 6194 { 6195 int res, i, n; 6196 6197 if (!s) 6198 return -EINVAL; 6199 6200 if (thermal_read_mode == TPACPI_THERMAL_TPEC_16) 6201 n = 16; 6202 else if (thermal_read_mode == TPACPI_THERMAL_TPEC_12) 6203 n = 12; 6204 else 6205 n = 8; 6206 6207 for (i = 0 ; i < n; i++) { 6208 res = thermal_get_sensor(i, &s->temp[i]); 6209 if (res) 6210 return res; 6211 } 6212 6213 return n; 6214 } 6215 6216 static void thermal_dump_all_sensors(void) 6217 { 6218 int n, i; 6219 struct ibm_thermal_sensors_struct t; 6220 6221 n = thermal_get_sensors(&t); 6222 if (n <= 0) 6223 return; 6224 6225 pr_notice("temperatures (Celsius):"); 6226 6227 for (i = 0; i < n; i++) { 6228 if (t.temp[i] != TPACPI_THERMAL_SENSOR_NA) 6229 pr_cont(" %d", (int)(t.temp[i] / 1000)); 6230 else 6231 pr_cont(" N/A"); 6232 } 6233 6234 pr_cont("\n"); 6235 } 6236 6237 /* sysfs temp##_input -------------------------------------------------- */ 6238 6239 static ssize_t thermal_temp_input_show(struct device *dev, 6240 struct device_attribute *attr, 6241 char *buf) 6242 { 6243 struct sensor_device_attribute *sensor_attr = 6244 to_sensor_dev_attr(attr); 6245 int idx = sensor_attr->index; 6246 s32 value; 6247 int res; 6248 6249 res = thermal_get_sensor(idx, &value); 6250 if (res) 6251 return res; 6252 if (value == TPACPI_THERMAL_SENSOR_NA) 6253 return -ENXIO; 6254 6255 return sysfs_emit(buf, "%d\n", value); 6256 } 6257 6258 #define THERMAL_SENSOR_ATTR_TEMP(_idxA, _idxB) \ 6259 SENSOR_ATTR(temp##_idxA##_input, S_IRUGO, \ 6260 thermal_temp_input_show, NULL, _idxB) 6261 6262 static struct sensor_device_attribute sensor_dev_attr_thermal_temp_input[] = { 6263 THERMAL_SENSOR_ATTR_TEMP(1, 0), 6264 THERMAL_SENSOR_ATTR_TEMP(2, 1), 6265 THERMAL_SENSOR_ATTR_TEMP(3, 2), 6266 THERMAL_SENSOR_ATTR_TEMP(4, 3), 6267 THERMAL_SENSOR_ATTR_TEMP(5, 4), 6268 THERMAL_SENSOR_ATTR_TEMP(6, 5), 6269 THERMAL_SENSOR_ATTR_TEMP(7, 6), 6270 THERMAL_SENSOR_ATTR_TEMP(8, 7), 6271 THERMAL_SENSOR_ATTR_TEMP(9, 8), 6272 THERMAL_SENSOR_ATTR_TEMP(10, 9), 6273 THERMAL_SENSOR_ATTR_TEMP(11, 10), 6274 THERMAL_SENSOR_ATTR_TEMP(12, 11), 6275 THERMAL_SENSOR_ATTR_TEMP(13, 12), 6276 THERMAL_SENSOR_ATTR_TEMP(14, 13), 6277 THERMAL_SENSOR_ATTR_TEMP(15, 14), 6278 THERMAL_SENSOR_ATTR_TEMP(16, 15), 6279 }; 6280 6281 #define THERMAL_ATTRS(X) \ 6282 &sensor_dev_attr_thermal_temp_input[X].dev_attr.attr 6283 6284 static struct attribute *thermal_temp_input_attr[] = { 6285 THERMAL_ATTRS(0), 6286 THERMAL_ATTRS(1), 6287 THERMAL_ATTRS(2), 6288 THERMAL_ATTRS(3), 6289 THERMAL_ATTRS(4), 6290 THERMAL_ATTRS(5), 6291 THERMAL_ATTRS(6), 6292 THERMAL_ATTRS(7), 6293 THERMAL_ATTRS(8), 6294 THERMAL_ATTRS(9), 6295 THERMAL_ATTRS(10), 6296 THERMAL_ATTRS(11), 6297 THERMAL_ATTRS(12), 6298 THERMAL_ATTRS(13), 6299 THERMAL_ATTRS(14), 6300 THERMAL_ATTRS(15), 6301 NULL 6302 }; 6303 6304 #define to_dev_attr(_attr) container_of(_attr, struct device_attribute, attr) 6305 6306 static umode_t thermal_attr_is_visible(struct kobject *kobj, 6307 struct attribute *attr, int n) 6308 { 6309 struct device_attribute *dev_attr = to_dev_attr(attr); 6310 struct sensor_device_attribute *sensor_attr = 6311 to_sensor_dev_attr(dev_attr); 6312 6313 int idx = sensor_attr->index; 6314 6315 switch (thermal_read_mode) { 6316 case TPACPI_THERMAL_NONE: 6317 return 0; 6318 6319 case TPACPI_THERMAL_ACPI_TMP07: 6320 case TPACPI_THERMAL_ACPI_UPDT: 6321 case TPACPI_THERMAL_TPEC_8: 6322 if (idx >= 8) 6323 return 0; 6324 break; 6325 6326 case TPACPI_THERMAL_TPEC_12: 6327 if (idx >= 12) 6328 return 0; 6329 break; 6330 6331 default: 6332 break; 6333 6334 } 6335 6336 return attr->mode; 6337 } 6338 6339 static const struct attribute_group thermal_attr_group = { 6340 .is_visible = thermal_attr_is_visible, 6341 .attrs = thermal_temp_input_attr, 6342 }; 6343 6344 #undef THERMAL_SENSOR_ATTR_TEMP 6345 #undef THERMAL_ATTRS 6346 6347 static ssize_t temp1_label_show(struct device *dev, struct device_attribute *attr, char *buf) 6348 { 6349 return sysfs_emit(buf, "CPU\n"); 6350 } 6351 static DEVICE_ATTR_RO(temp1_label); 6352 6353 static ssize_t temp2_label_show(struct device *dev, struct device_attribute *attr, char *buf) 6354 { 6355 return sysfs_emit(buf, "GPU\n"); 6356 } 6357 static DEVICE_ATTR_RO(temp2_label); 6358 6359 static struct attribute *temp_label_attributes[] = { 6360 &dev_attr_temp1_label.attr, 6361 &dev_attr_temp2_label.attr, 6362 NULL 6363 }; 6364 6365 static umode_t temp_label_attr_is_visible(struct kobject *kobj, 6366 struct attribute *attr, int n) 6367 { 6368 return thermal_use_labels ? attr->mode : 0; 6369 } 6370 6371 static const struct attribute_group temp_label_attr_group = { 6372 .is_visible = temp_label_attr_is_visible, 6373 .attrs = temp_label_attributes, 6374 }; 6375 6376 /* --------------------------------------------------------------------- */ 6377 6378 static int __init thermal_init(struct ibm_init_struct *iibm) 6379 { 6380 vdbg_printk(TPACPI_DBG_INIT, "initializing thermal subdriver\n"); 6381 6382 thermal_read_mode = thermal_read_mode_check(); 6383 6384 vdbg_printk(TPACPI_DBG_INIT, "thermal is %s, mode %d\n", 6385 str_supported(thermal_read_mode != TPACPI_THERMAL_NONE), 6386 thermal_read_mode); 6387 6388 return thermal_read_mode != TPACPI_THERMAL_NONE ? 0 : -ENODEV; 6389 } 6390 6391 static int thermal_read(struct seq_file *m) 6392 { 6393 int n, i; 6394 struct ibm_thermal_sensors_struct t; 6395 6396 n = thermal_get_sensors(&t); 6397 if (unlikely(n < 0)) 6398 return n; 6399 6400 seq_printf(m, "temperatures:\t"); 6401 6402 if (n > 0) { 6403 for (i = 0; i < (n - 1); i++) 6404 seq_printf(m, "%d ", t.temp[i] / 1000); 6405 seq_printf(m, "%d\n", t.temp[i] / 1000); 6406 } else 6407 seq_printf(m, "not supported\n"); 6408 6409 return 0; 6410 } 6411 6412 static struct ibm_struct thermal_driver_data = { 6413 .name = "thermal", 6414 .read = thermal_read, 6415 }; 6416 6417 /************************************************************************* 6418 * Backlight/brightness subdriver 6419 */ 6420 6421 #define TPACPI_BACKLIGHT_DEV_NAME "thinkpad_screen" 6422 6423 /* 6424 * ThinkPads can read brightness from two places: EC HBRV (0x31), or 6425 * CMOS NVRAM byte 0x5E, bits 0-3. 6426 * 6427 * EC HBRV (0x31) has the following layout 6428 * Bit 7: unknown function 6429 * Bit 6: unknown function 6430 * Bit 5: Z: honour scale changes, NZ: ignore scale changes 6431 * Bit 4: must be set to zero to avoid problems 6432 * Bit 3-0: backlight brightness level 6433 * 6434 * brightness_get_raw returns status data in the HBRV layout 6435 * 6436 * WARNING: The X61 has been verified to use HBRV for something else, so 6437 * this should be used _only_ on IBM ThinkPads, and maybe with some careful 6438 * testing on the very early *60 Lenovo models... 6439 */ 6440 6441 enum { 6442 TP_EC_BACKLIGHT = 0x31, 6443 6444 /* TP_EC_BACKLIGHT bitmasks */ 6445 TP_EC_BACKLIGHT_LVLMSK = 0x1F, 6446 TP_EC_BACKLIGHT_CMDMSK = 0xE0, 6447 TP_EC_BACKLIGHT_MAPSW = 0x20, 6448 }; 6449 6450 enum tpacpi_brightness_access_mode { 6451 TPACPI_BRGHT_MODE_AUTO = 0, /* Not implemented yet */ 6452 TPACPI_BRGHT_MODE_EC, /* EC control */ 6453 TPACPI_BRGHT_MODE_UCMS_STEP, /* UCMS step-based control */ 6454 TPACPI_BRGHT_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 6455 TPACPI_BRGHT_MODE_MAX 6456 }; 6457 6458 static struct backlight_device *ibm_backlight_device; 6459 6460 static enum tpacpi_brightness_access_mode brightness_mode = 6461 TPACPI_BRGHT_MODE_MAX; 6462 6463 static unsigned int brightness_enable = 2; /* 2 = auto, 0 = no, 1 = yes */ 6464 6465 static struct mutex brightness_mutex; 6466 6467 /* NVRAM brightness access */ 6468 static unsigned int tpacpi_brightness_nvram_get(void) 6469 { 6470 u8 lnvram; 6471 6472 lockdep_assert_held(&brightness_mutex); 6473 6474 lnvram = (nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS) 6475 & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6476 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS; 6477 lnvram &= bright_maxlvl; 6478 6479 return lnvram; 6480 } 6481 6482 static void tpacpi_brightness_checkpoint_nvram(void) 6483 { 6484 u8 lec = 0; 6485 u8 b_nvram; 6486 6487 if (brightness_mode != TPACPI_BRGHT_MODE_ECNVRAM) 6488 return; 6489 6490 vdbg_printk(TPACPI_DBG_BRGHT, 6491 "trying to checkpoint backlight level to NVRAM...\n"); 6492 6493 if (mutex_lock_killable(&brightness_mutex) < 0) 6494 return; 6495 6496 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6497 goto unlock; 6498 lec &= TP_EC_BACKLIGHT_LVLMSK; 6499 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_BRIGHTNESS); 6500 6501 if (lec != ((b_nvram & TP_NVRAM_MASK_LEVEL_BRIGHTNESS) 6502 >> TP_NVRAM_POS_LEVEL_BRIGHTNESS)) { 6503 /* NVRAM needs update */ 6504 b_nvram &= ~(TP_NVRAM_MASK_LEVEL_BRIGHTNESS << 6505 TP_NVRAM_POS_LEVEL_BRIGHTNESS); 6506 b_nvram |= lec; 6507 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_BRIGHTNESS); 6508 dbg_printk(TPACPI_DBG_BRGHT, 6509 "updated NVRAM backlight level to %u (0x%02x)\n", 6510 (unsigned int) lec, (unsigned int) b_nvram); 6511 } else 6512 vdbg_printk(TPACPI_DBG_BRGHT, 6513 "NVRAM backlight level already is %u (0x%02x)\n", 6514 (unsigned int) lec, (unsigned int) b_nvram); 6515 6516 unlock: 6517 mutex_unlock(&brightness_mutex); 6518 } 6519 6520 6521 static int tpacpi_brightness_get_raw(int *status) 6522 { 6523 u8 lec = 0; 6524 6525 lockdep_assert_held(&brightness_mutex); 6526 6527 switch (brightness_mode) { 6528 case TPACPI_BRGHT_MODE_UCMS_STEP: 6529 *status = tpacpi_brightness_nvram_get(); 6530 return 0; 6531 case TPACPI_BRGHT_MODE_EC: 6532 case TPACPI_BRGHT_MODE_ECNVRAM: 6533 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6534 return -EIO; 6535 *status = lec; 6536 return 0; 6537 default: 6538 return -ENXIO; 6539 } 6540 } 6541 6542 /* do NOT call with illegal backlight level value */ 6543 static int tpacpi_brightness_set_ec(unsigned int value) 6544 { 6545 u8 lec = 0; 6546 6547 lockdep_assert_held(&brightness_mutex); 6548 6549 if (unlikely(!acpi_ec_read(TP_EC_BACKLIGHT, &lec))) 6550 return -EIO; 6551 6552 if (unlikely(!acpi_ec_write(TP_EC_BACKLIGHT, 6553 (lec & TP_EC_BACKLIGHT_CMDMSK) | 6554 (value & TP_EC_BACKLIGHT_LVLMSK)))) 6555 return -EIO; 6556 6557 return 0; 6558 } 6559 6560 static int tpacpi_brightness_set_ucmsstep(unsigned int value) 6561 { 6562 int cmos_cmd, inc; 6563 unsigned int current_value, i; 6564 6565 lockdep_assert_held(&brightness_mutex); 6566 6567 current_value = tpacpi_brightness_nvram_get(); 6568 6569 if (value == current_value) 6570 return 0; 6571 6572 cmos_cmd = (value > current_value) ? 6573 TP_CMOS_BRIGHTNESS_UP : 6574 TP_CMOS_BRIGHTNESS_DOWN; 6575 inc = (value > current_value) ? 1 : -1; 6576 6577 for (i = current_value; i != value; i += inc) 6578 if (issue_thinkpad_cmos_command(cmos_cmd)) 6579 return -EIO; 6580 6581 return 0; 6582 } 6583 6584 /* May return EINTR which can always be mapped to ERESTARTSYS */ 6585 static int brightness_set(unsigned int value) 6586 { 6587 int res; 6588 6589 if (value > bright_maxlvl) 6590 return -EINVAL; 6591 6592 vdbg_printk(TPACPI_DBG_BRGHT, 6593 "set backlight level to %d\n", value); 6594 6595 res = mutex_lock_killable(&brightness_mutex); 6596 if (res < 0) 6597 return res; 6598 6599 switch (brightness_mode) { 6600 case TPACPI_BRGHT_MODE_EC: 6601 case TPACPI_BRGHT_MODE_ECNVRAM: 6602 res = tpacpi_brightness_set_ec(value); 6603 break; 6604 case TPACPI_BRGHT_MODE_UCMS_STEP: 6605 res = tpacpi_brightness_set_ucmsstep(value); 6606 break; 6607 default: 6608 res = -ENXIO; 6609 } 6610 6611 mutex_unlock(&brightness_mutex); 6612 return res; 6613 } 6614 6615 /* sysfs backlight class ----------------------------------------------- */ 6616 6617 static int brightness_update_status(struct backlight_device *bd) 6618 { 6619 int level = backlight_get_brightness(bd); 6620 6621 dbg_printk(TPACPI_DBG_BRGHT, 6622 "backlight: attempt to set level to %d\n", 6623 level); 6624 6625 /* it is the backlight class's job (caller) to handle 6626 * EINTR and other errors properly */ 6627 return brightness_set(level); 6628 } 6629 6630 static int brightness_get(struct backlight_device *bd) 6631 { 6632 int status, res; 6633 6634 res = mutex_lock_killable(&brightness_mutex); 6635 if (res < 0) 6636 return 0; 6637 6638 res = tpacpi_brightness_get_raw(&status); 6639 6640 mutex_unlock(&brightness_mutex); 6641 6642 if (res < 0) 6643 return 0; 6644 6645 return status & TP_EC_BACKLIGHT_LVLMSK; 6646 } 6647 6648 static void tpacpi_brightness_notify_change(void) 6649 { 6650 backlight_force_update(ibm_backlight_device, 6651 BACKLIGHT_UPDATE_HOTKEY); 6652 } 6653 6654 static const struct backlight_ops ibm_backlight_data = { 6655 .get_brightness = brightness_get, 6656 .update_status = brightness_update_status, 6657 }; 6658 6659 /* --------------------------------------------------------------------- */ 6660 6661 static int __init tpacpi_evaluate_bcl(struct acpi_device *adev, void *not_used) 6662 { 6663 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 6664 union acpi_object *obj; 6665 acpi_status status; 6666 int rc; 6667 6668 status = acpi_evaluate_object(adev->handle, "_BCL", NULL, &buffer); 6669 if (ACPI_FAILURE(status)) 6670 return 0; 6671 6672 obj = buffer.pointer; 6673 if (!obj || obj->type != ACPI_TYPE_PACKAGE) { 6674 acpi_handle_info(adev->handle, 6675 "Unknown _BCL data, please report this to %s\n", 6676 TPACPI_MAIL); 6677 rc = 0; 6678 } else { 6679 rc = obj->package.count; 6680 } 6681 kfree(obj); 6682 6683 return rc; 6684 } 6685 6686 /* 6687 * Call _BCL method of video device. On some ThinkPads this will 6688 * switch the firmware to the ACPI brightness control mode. 6689 */ 6690 6691 static int __init tpacpi_query_bcl_levels(acpi_handle handle) 6692 { 6693 struct acpi_device *device; 6694 6695 device = acpi_fetch_acpi_dev(handle); 6696 if (!device) 6697 return 0; 6698 6699 return acpi_dev_for_each_child(device, tpacpi_evaluate_bcl, NULL); 6700 } 6701 6702 6703 /* 6704 * Returns 0 (no ACPI _BCL or _BCL invalid), or size of brightness map 6705 */ 6706 static unsigned int __init tpacpi_check_std_acpi_brightness_support(void) 6707 { 6708 acpi_handle video_device; 6709 int bcl_levels = 0; 6710 6711 tpacpi_acpi_handle_locate("video", NULL, &video_device); 6712 if (video_device) 6713 bcl_levels = tpacpi_query_bcl_levels(video_device); 6714 6715 tp_features.bright_acpimode = (bcl_levels > 0); 6716 6717 return (bcl_levels > 2) ? (bcl_levels - 2) : 0; 6718 } 6719 6720 /* 6721 * These are only useful for models that have only one possibility 6722 * of GPU. If the BIOS model handles both ATI and Intel, don't use 6723 * these quirks. 6724 */ 6725 #define TPACPI_BRGHT_Q_NOEC 0x0001 /* Must NOT use EC HBRV */ 6726 #define TPACPI_BRGHT_Q_EC 0x0002 /* Should or must use EC HBRV */ 6727 #define TPACPI_BRGHT_Q_ASK 0x8000 /* Ask for user report */ 6728 6729 static const struct tpacpi_quirk brightness_quirk_table[] __initconst = { 6730 /* Models with ATI GPUs known to require ECNVRAM mode */ 6731 TPACPI_Q_IBM('1', 'Y', TPACPI_BRGHT_Q_EC), /* T43/p ATI */ 6732 6733 /* Models with ATI GPUs that can use ECNVRAM */ 6734 TPACPI_Q_IBM('1', 'R', TPACPI_BRGHT_Q_EC), /* R50,51 T40-42 */ 6735 TPACPI_Q_IBM('1', 'Q', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6736 TPACPI_Q_IBM('7', '6', TPACPI_BRGHT_Q_EC), /* R52 */ 6737 TPACPI_Q_IBM('7', '8', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6738 6739 /* Models with Intel Extreme Graphics 2 */ 6740 TPACPI_Q_IBM('1', 'U', TPACPI_BRGHT_Q_NOEC), /* X40 */ 6741 TPACPI_Q_IBM('1', 'V', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6742 TPACPI_Q_IBM('1', 'W', TPACPI_BRGHT_Q_ASK|TPACPI_BRGHT_Q_EC), 6743 6744 /* Models with Intel GMA900 */ 6745 TPACPI_Q_IBM('7', '0', TPACPI_BRGHT_Q_NOEC), /* T43, R52 */ 6746 TPACPI_Q_IBM('7', '4', TPACPI_BRGHT_Q_NOEC), /* X41 */ 6747 TPACPI_Q_IBM('7', '5', TPACPI_BRGHT_Q_NOEC), /* X41 Tablet */ 6748 }; 6749 6750 /* 6751 * Returns < 0 for error, otherwise sets tp_features.bright_* 6752 * and bright_maxlvl. 6753 */ 6754 static void __init tpacpi_detect_brightness_capabilities(void) 6755 { 6756 unsigned int b; 6757 6758 vdbg_printk(TPACPI_DBG_INIT, 6759 "detecting firmware brightness interface capabilities\n"); 6760 6761 /* we could run a quirks check here (same table used by 6762 * brightness_init) if needed */ 6763 6764 /* 6765 * We always attempt to detect acpi support, so as to switch 6766 * Lenovo Vista BIOS to ACPI brightness mode even if we are not 6767 * going to publish a backlight interface 6768 */ 6769 b = tpacpi_check_std_acpi_brightness_support(); 6770 switch (b) { 6771 case 16: 6772 bright_maxlvl = 15; 6773 break; 6774 case 8: 6775 case 0: 6776 bright_maxlvl = 7; 6777 break; 6778 default: 6779 tp_features.bright_unkfw = 1; 6780 bright_maxlvl = b - 1; 6781 } 6782 pr_debug("detected %u brightness levels\n", bright_maxlvl + 1); 6783 } 6784 6785 static int __init brightness_init(struct ibm_init_struct *iibm) 6786 { 6787 struct backlight_properties props; 6788 int b; 6789 unsigned long quirks; 6790 6791 vdbg_printk(TPACPI_DBG_INIT, "initializing brightness subdriver\n"); 6792 6793 mutex_init(&brightness_mutex); 6794 6795 quirks = tpacpi_check_quirks(brightness_quirk_table, 6796 ARRAY_SIZE(brightness_quirk_table)); 6797 6798 /* tpacpi_detect_brightness_capabilities() must have run already */ 6799 6800 /* if it is unknown, we don't handle it: it wouldn't be safe */ 6801 if (tp_features.bright_unkfw) 6802 return -ENODEV; 6803 6804 if (!brightness_enable) { 6805 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6806 "brightness support disabled by module parameter\n"); 6807 return -ENODEV; 6808 } 6809 6810 if (acpi_video_get_backlight_type() != acpi_backlight_vendor) { 6811 if (brightness_enable > 1) { 6812 pr_info("Standard ACPI backlight interface available, not loading native one\n"); 6813 return -ENODEV; 6814 } else if (brightness_enable == 1) { 6815 pr_warn("Cannot enable backlight brightness support, ACPI is already handling it. Refer to the acpi_backlight kernel parameter.\n"); 6816 return -ENODEV; 6817 } 6818 } else if (!tp_features.bright_acpimode) { 6819 pr_notice("ACPI backlight interface not available\n"); 6820 return -ENODEV; 6821 } 6822 6823 pr_notice("ACPI native brightness control enabled\n"); 6824 6825 /* 6826 * Check for module parameter bogosity, note that we 6827 * init brightness_mode to TPACPI_BRGHT_MODE_MAX in order to be 6828 * able to detect "unspecified" 6829 */ 6830 if (brightness_mode > TPACPI_BRGHT_MODE_MAX) 6831 return -EINVAL; 6832 6833 /* TPACPI_BRGHT_MODE_AUTO not implemented yet, just use default */ 6834 if (brightness_mode == TPACPI_BRGHT_MODE_AUTO || 6835 brightness_mode == TPACPI_BRGHT_MODE_MAX) { 6836 if (quirks & TPACPI_BRGHT_Q_EC) 6837 brightness_mode = TPACPI_BRGHT_MODE_ECNVRAM; 6838 else 6839 brightness_mode = TPACPI_BRGHT_MODE_UCMS_STEP; 6840 6841 dbg_printk(TPACPI_DBG_BRGHT, 6842 "driver auto-selected brightness_mode=%d\n", 6843 brightness_mode); 6844 } 6845 6846 /* Safety */ 6847 if (!tpacpi_is_ibm() && 6848 (brightness_mode == TPACPI_BRGHT_MODE_ECNVRAM || 6849 brightness_mode == TPACPI_BRGHT_MODE_EC)) 6850 return -EINVAL; 6851 6852 if (tpacpi_brightness_get_raw(&b) < 0) 6853 return -ENODEV; 6854 6855 memset(&props, 0, sizeof(struct backlight_properties)); 6856 props.type = BACKLIGHT_PLATFORM; 6857 props.max_brightness = bright_maxlvl; 6858 props.brightness = b & TP_EC_BACKLIGHT_LVLMSK; 6859 ibm_backlight_device = backlight_device_register(TPACPI_BACKLIGHT_DEV_NAME, 6860 NULL, NULL, 6861 &ibm_backlight_data, 6862 &props); 6863 if (IS_ERR(ibm_backlight_device)) { 6864 int rc = PTR_ERR(ibm_backlight_device); 6865 ibm_backlight_device = NULL; 6866 pr_err("Could not register backlight device\n"); 6867 return rc; 6868 } 6869 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6870 "brightness is supported\n"); 6871 6872 if (quirks & TPACPI_BRGHT_Q_ASK) { 6873 pr_notice("brightness: will use unverified default: brightness_mode=%d\n", 6874 brightness_mode); 6875 pr_notice("brightness: please report to %s whether it works well or not on your ThinkPad\n", 6876 TPACPI_MAIL); 6877 } 6878 6879 /* Added by mistake in early 2007. Probably useless, but it could 6880 * be working around some unknown firmware problem where the value 6881 * read at startup doesn't match the real hardware state... so leave 6882 * it in place just in case */ 6883 backlight_update_status(ibm_backlight_device); 6884 6885 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_BRGHT, 6886 "brightness: registering brightness hotkeys as change notification\n"); 6887 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 6888 | TP_ACPI_HKEY_BRGHTUP_MASK 6889 | TP_ACPI_HKEY_BRGHTDWN_MASK); 6890 return 0; 6891 } 6892 6893 static void brightness_suspend(void) 6894 { 6895 tpacpi_brightness_checkpoint_nvram(); 6896 } 6897 6898 static void brightness_shutdown(void) 6899 { 6900 tpacpi_brightness_checkpoint_nvram(); 6901 } 6902 6903 static void brightness_exit(void) 6904 { 6905 if (ibm_backlight_device) { 6906 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_BRGHT, 6907 "calling backlight_device_unregister()\n"); 6908 backlight_device_unregister(ibm_backlight_device); 6909 } 6910 6911 tpacpi_brightness_checkpoint_nvram(); 6912 } 6913 6914 static int brightness_read(struct seq_file *m) 6915 { 6916 int level; 6917 6918 level = brightness_get(NULL); 6919 if (level < 0) { 6920 seq_printf(m, "level:\t\tunreadable\n"); 6921 } else { 6922 seq_printf(m, "level:\t\t%d\n", level); 6923 seq_printf(m, "commands:\tup, down\n"); 6924 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 6925 bright_maxlvl); 6926 } 6927 6928 return 0; 6929 } 6930 6931 static int brightness_write(char *buf) 6932 { 6933 int level; 6934 int rc; 6935 char *cmd; 6936 6937 level = brightness_get(NULL); 6938 if (level < 0) 6939 return level; 6940 6941 while ((cmd = strsep(&buf, ","))) { 6942 if (strstarts(cmd, "up")) { 6943 if (level < bright_maxlvl) 6944 level++; 6945 } else if (strstarts(cmd, "down")) { 6946 if (level > 0) 6947 level--; 6948 } else if (sscanf(cmd, "level %d", &level) == 1 && 6949 level >= 0 && level <= bright_maxlvl) { 6950 /* new level set */ 6951 } else 6952 return -EINVAL; 6953 } 6954 6955 tpacpi_disclose_usertask("procfs brightness", 6956 "set level to %d\n", level); 6957 6958 /* 6959 * Now we know what the final level should be, so we try to set it. 6960 * Doing it this way makes the syscall restartable in case of EINTR 6961 */ 6962 rc = brightness_set(level); 6963 if (!rc && ibm_backlight_device) 6964 backlight_force_update(ibm_backlight_device, 6965 BACKLIGHT_UPDATE_SYSFS); 6966 return (rc == -EINTR) ? -ERESTARTSYS : rc; 6967 } 6968 6969 static struct ibm_struct brightness_driver_data = { 6970 .name = "brightness", 6971 .read = brightness_read, 6972 .write = brightness_write, 6973 .exit = brightness_exit, 6974 .suspend = brightness_suspend, 6975 .shutdown = brightness_shutdown, 6976 }; 6977 6978 /************************************************************************* 6979 * Volume subdriver 6980 */ 6981 6982 /* 6983 * IBM ThinkPads have a simple volume controller with MUTE gating. 6984 * Very early Lenovo ThinkPads follow the IBM ThinkPad spec. 6985 * 6986 * Since the *61 series (and probably also the later *60 series), Lenovo 6987 * ThinkPads only implement the MUTE gate. 6988 * 6989 * EC register 0x30 6990 * Bit 6: MUTE (1 mutes sound) 6991 * Bit 3-0: Volume 6992 * Other bits should be zero as far as we know. 6993 * 6994 * This is also stored in CMOS NVRAM, byte 0x60, bit 6 (MUTE), and 6995 * bits 3-0 (volume). Other bits in NVRAM may have other functions, 6996 * such as bit 7 which is used to detect repeated presses of MUTE, 6997 * and we leave them unchanged. 6998 * 6999 * On newer Lenovo ThinkPads, the EC can automatically change the volume 7000 * in response to user input. Unfortunately, this rarely works well. 7001 * The laptop changes the state of its internal MUTE gate and, on some 7002 * models, sends KEY_MUTE, causing any user code that responds to the 7003 * mute button to get confused. The hardware MUTE gate is also 7004 * unnecessary, since user code can handle the mute button without 7005 * kernel or EC help. 7006 * 7007 * To avoid confusing userspace, we simply disable all EC-based mute 7008 * and volume controls when possible. 7009 */ 7010 7011 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 7012 7013 #define TPACPI_ALSA_DRVNAME "ThinkPad EC" 7014 #define TPACPI_ALSA_SHRTNAME "ThinkPad Console Audio Control" 7015 #define TPACPI_ALSA_MIXERNAME TPACPI_ALSA_SHRTNAME 7016 7017 #if SNDRV_CARDS <= 32 7018 #define DEFAULT_ALSA_IDX ~((1 << (SNDRV_CARDS - 3)) - 1) 7019 #else 7020 #define DEFAULT_ALSA_IDX ~((1 << (32 - 3)) - 1) 7021 #endif 7022 static int alsa_index = DEFAULT_ALSA_IDX; /* last three slots */ 7023 static char *alsa_id = "ThinkPadEC"; 7024 static bool alsa_enable = SNDRV_DEFAULT_ENABLE1; 7025 7026 struct tpacpi_alsa_data { 7027 struct snd_card *card; 7028 struct snd_ctl_elem_id *ctl_mute_id; 7029 struct snd_ctl_elem_id *ctl_vol_id; 7030 }; 7031 7032 static struct snd_card *alsa_card; 7033 7034 enum { 7035 TP_EC_AUDIO = 0x30, 7036 7037 /* TP_EC_AUDIO bits */ 7038 TP_EC_AUDIO_MUTESW = 6, 7039 7040 /* TP_EC_AUDIO bitmasks */ 7041 TP_EC_AUDIO_LVL_MSK = 0x0F, 7042 TP_EC_AUDIO_MUTESW_MSK = (1 << TP_EC_AUDIO_MUTESW), 7043 7044 /* Maximum volume */ 7045 TP_EC_VOLUME_MAX = 14, 7046 }; 7047 7048 enum tpacpi_volume_access_mode { 7049 TPACPI_VOL_MODE_AUTO = 0, /* Not implemented yet */ 7050 TPACPI_VOL_MODE_EC, /* Pure EC control */ 7051 TPACPI_VOL_MODE_UCMS_STEP, /* UCMS step-based control: N/A */ 7052 TPACPI_VOL_MODE_ECNVRAM, /* EC control w/ NVRAM store */ 7053 TPACPI_VOL_MODE_MAX 7054 }; 7055 7056 enum tpacpi_volume_capabilities { 7057 TPACPI_VOL_CAP_AUTO = 0, /* Use white/blacklist */ 7058 TPACPI_VOL_CAP_VOLMUTE, /* Output vol and mute */ 7059 TPACPI_VOL_CAP_MUTEONLY, /* Output mute only */ 7060 TPACPI_VOL_CAP_MAX 7061 }; 7062 7063 enum tpacpi_mute_btn_mode { 7064 TP_EC_MUTE_BTN_LATCH = 0, /* Mute mutes; up/down unmutes */ 7065 /* We don't know what mode 1 is. */ 7066 TP_EC_MUTE_BTN_NONE = 2, /* Mute and up/down are just keys */ 7067 TP_EC_MUTE_BTN_TOGGLE = 3, /* Mute toggles; up/down unmutes */ 7068 }; 7069 7070 static enum tpacpi_volume_access_mode volume_mode = 7071 TPACPI_VOL_MODE_MAX; 7072 7073 static enum tpacpi_volume_capabilities volume_capabilities; 7074 static bool volume_control_allowed; 7075 static bool software_mute_requested = true; 7076 static bool software_mute_active; 7077 static int software_mute_orig_mode; 7078 7079 /* 7080 * Used to syncronize writers to TP_EC_AUDIO and 7081 * TP_NVRAM_ADDR_MIXER, as we need to do read-modify-write 7082 */ 7083 static struct mutex volume_mutex; 7084 7085 static void tpacpi_volume_checkpoint_nvram(void) 7086 { 7087 u8 lec = 0; 7088 u8 b_nvram; 7089 u8 ec_mask; 7090 7091 if (volume_mode != TPACPI_VOL_MODE_ECNVRAM) 7092 return; 7093 if (!volume_control_allowed) 7094 return; 7095 if (software_mute_active) 7096 return; 7097 7098 vdbg_printk(TPACPI_DBG_MIXER, 7099 "trying to checkpoint mixer state to NVRAM...\n"); 7100 7101 if (tp_features.mixer_no_level_control) 7102 ec_mask = TP_EC_AUDIO_MUTESW_MSK; 7103 else 7104 ec_mask = TP_EC_AUDIO_MUTESW_MSK | TP_EC_AUDIO_LVL_MSK; 7105 7106 if (mutex_lock_killable(&volume_mutex) < 0) 7107 return; 7108 7109 if (unlikely(!acpi_ec_read(TP_EC_AUDIO, &lec))) 7110 goto unlock; 7111 lec &= ec_mask; 7112 b_nvram = nvram_read_byte(TP_NVRAM_ADDR_MIXER); 7113 7114 if (lec != (b_nvram & ec_mask)) { 7115 /* NVRAM needs update */ 7116 b_nvram &= ~ec_mask; 7117 b_nvram |= lec; 7118 nvram_write_byte(b_nvram, TP_NVRAM_ADDR_MIXER); 7119 dbg_printk(TPACPI_DBG_MIXER, 7120 "updated NVRAM mixer status to 0x%02x (0x%02x)\n", 7121 (unsigned int) lec, (unsigned int) b_nvram); 7122 } else { 7123 vdbg_printk(TPACPI_DBG_MIXER, 7124 "NVRAM mixer status already is 0x%02x (0x%02x)\n", 7125 (unsigned int) lec, (unsigned int) b_nvram); 7126 } 7127 7128 unlock: 7129 mutex_unlock(&volume_mutex); 7130 } 7131 7132 static int volume_get_status_ec(u8 *status) 7133 { 7134 u8 s; 7135 7136 if (!acpi_ec_read(TP_EC_AUDIO, &s)) 7137 return -EIO; 7138 7139 *status = s; 7140 7141 dbg_printk(TPACPI_DBG_MIXER, "status 0x%02x\n", s); 7142 7143 return 0; 7144 } 7145 7146 static int volume_get_status(u8 *status) 7147 { 7148 return volume_get_status_ec(status); 7149 } 7150 7151 static int volume_set_status_ec(const u8 status) 7152 { 7153 if (!acpi_ec_write(TP_EC_AUDIO, status)) 7154 return -EIO; 7155 7156 dbg_printk(TPACPI_DBG_MIXER, "set EC mixer to 0x%02x\n", status); 7157 7158 /* 7159 * On X200s, and possibly on others, it can take a while for 7160 * reads to become correct. 7161 */ 7162 msleep(1); 7163 7164 return 0; 7165 } 7166 7167 static int volume_set_status(const u8 status) 7168 { 7169 return volume_set_status_ec(status); 7170 } 7171 7172 /* returns < 0 on error, 0 on no change, 1 on change */ 7173 static int __volume_set_mute_ec(const bool mute) 7174 { 7175 int rc; 7176 u8 s, n; 7177 7178 if (mutex_lock_killable(&volume_mutex) < 0) 7179 return -EINTR; 7180 7181 rc = volume_get_status_ec(&s); 7182 if (rc) 7183 goto unlock; 7184 7185 n = (mute) ? s | TP_EC_AUDIO_MUTESW_MSK : 7186 s & ~TP_EC_AUDIO_MUTESW_MSK; 7187 7188 if (n != s) { 7189 rc = volume_set_status_ec(n); 7190 if (!rc) 7191 rc = 1; 7192 } 7193 7194 unlock: 7195 mutex_unlock(&volume_mutex); 7196 return rc; 7197 } 7198 7199 static int volume_alsa_set_mute(const bool mute) 7200 { 7201 dbg_printk(TPACPI_DBG_MIXER, "ALSA: trying to %smute\n", 7202 (mute) ? "" : "un"); 7203 return __volume_set_mute_ec(mute); 7204 } 7205 7206 static int volume_set_mute(const bool mute) 7207 { 7208 int rc; 7209 7210 dbg_printk(TPACPI_DBG_MIXER, "trying to %smute\n", 7211 (mute) ? "" : "un"); 7212 7213 rc = __volume_set_mute_ec(mute); 7214 return (rc < 0) ? rc : 0; 7215 } 7216 7217 /* returns < 0 on error, 0 on no change, 1 on change */ 7218 static int __volume_set_volume_ec(const u8 vol) 7219 { 7220 int rc; 7221 u8 s, n; 7222 7223 if (vol > TP_EC_VOLUME_MAX) 7224 return -EINVAL; 7225 7226 if (mutex_lock_killable(&volume_mutex) < 0) 7227 return -EINTR; 7228 7229 rc = volume_get_status_ec(&s); 7230 if (rc) 7231 goto unlock; 7232 7233 n = (s & ~TP_EC_AUDIO_LVL_MSK) | vol; 7234 7235 if (n != s) { 7236 rc = volume_set_status_ec(n); 7237 if (!rc) 7238 rc = 1; 7239 } 7240 7241 unlock: 7242 mutex_unlock(&volume_mutex); 7243 return rc; 7244 } 7245 7246 static int volume_set_software_mute(bool startup) 7247 { 7248 int result; 7249 7250 if (!tpacpi_is_lenovo()) 7251 return -ENODEV; 7252 7253 if (startup) { 7254 if (!acpi_evalf(ec_handle, &software_mute_orig_mode, 7255 "HAUM", "qd")) 7256 return -EIO; 7257 7258 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7259 "Initial HAUM setting was %d\n", 7260 software_mute_orig_mode); 7261 } 7262 7263 if (!acpi_evalf(ec_handle, &result, "SAUM", "qdd", 7264 (int)TP_EC_MUTE_BTN_NONE)) 7265 return -EIO; 7266 7267 if (result != TP_EC_MUTE_BTN_NONE) 7268 pr_warn("Unexpected SAUM result %d\n", 7269 result); 7270 7271 /* 7272 * In software mute mode, the standard codec controls take 7273 * precendence, so we unmute the ThinkPad HW switch at 7274 * startup. Just on case there are SAUM-capable ThinkPads 7275 * with level controls, set max HW volume as well. 7276 */ 7277 if (tp_features.mixer_no_level_control) 7278 result = volume_set_mute(false); 7279 else 7280 result = volume_set_status(TP_EC_VOLUME_MAX); 7281 7282 if (result != 0) 7283 pr_warn("Failed to unmute the HW mute switch\n"); 7284 7285 return 0; 7286 } 7287 7288 static void volume_exit_software_mute(void) 7289 { 7290 int r; 7291 7292 if (!acpi_evalf(ec_handle, &r, "SAUM", "qdd", software_mute_orig_mode) 7293 || r != software_mute_orig_mode) 7294 pr_warn("Failed to restore mute mode\n"); 7295 } 7296 7297 static int volume_alsa_set_volume(const u8 vol) 7298 { 7299 dbg_printk(TPACPI_DBG_MIXER, 7300 "ALSA: trying to set volume level to %hu\n", vol); 7301 return __volume_set_volume_ec(vol); 7302 } 7303 7304 static void volume_alsa_notify_change(void) 7305 { 7306 struct tpacpi_alsa_data *d; 7307 7308 if (alsa_card && alsa_card->private_data) { 7309 d = alsa_card->private_data; 7310 if (d->ctl_mute_id) 7311 snd_ctl_notify(alsa_card, 7312 SNDRV_CTL_EVENT_MASK_VALUE, 7313 d->ctl_mute_id); 7314 if (d->ctl_vol_id) 7315 snd_ctl_notify(alsa_card, 7316 SNDRV_CTL_EVENT_MASK_VALUE, 7317 d->ctl_vol_id); 7318 } 7319 } 7320 7321 static int volume_alsa_vol_info(struct snd_kcontrol *kcontrol, 7322 struct snd_ctl_elem_info *uinfo) 7323 { 7324 uinfo->type = SNDRV_CTL_ELEM_TYPE_INTEGER; 7325 uinfo->count = 1; 7326 uinfo->value.integer.min = 0; 7327 uinfo->value.integer.max = TP_EC_VOLUME_MAX; 7328 return 0; 7329 } 7330 7331 static int volume_alsa_vol_get(struct snd_kcontrol *kcontrol, 7332 struct snd_ctl_elem_value *ucontrol) 7333 { 7334 u8 s; 7335 int rc; 7336 7337 rc = volume_get_status(&s); 7338 if (rc < 0) 7339 return rc; 7340 7341 ucontrol->value.integer.value[0] = s & TP_EC_AUDIO_LVL_MSK; 7342 return 0; 7343 } 7344 7345 static int volume_alsa_vol_put(struct snd_kcontrol *kcontrol, 7346 struct snd_ctl_elem_value *ucontrol) 7347 { 7348 tpacpi_disclose_usertask("ALSA", "set volume to %ld\n", 7349 ucontrol->value.integer.value[0]); 7350 return volume_alsa_set_volume(ucontrol->value.integer.value[0]); 7351 } 7352 7353 #define volume_alsa_mute_info snd_ctl_boolean_mono_info 7354 7355 static int volume_alsa_mute_get(struct snd_kcontrol *kcontrol, 7356 struct snd_ctl_elem_value *ucontrol) 7357 { 7358 u8 s; 7359 int rc; 7360 7361 rc = volume_get_status(&s); 7362 if (rc < 0) 7363 return rc; 7364 7365 ucontrol->value.integer.value[0] = 7366 (s & TP_EC_AUDIO_MUTESW_MSK) ? 0 : 1; 7367 return 0; 7368 } 7369 7370 static int volume_alsa_mute_put(struct snd_kcontrol *kcontrol, 7371 struct snd_ctl_elem_value *ucontrol) 7372 { 7373 tpacpi_disclose_usertask("ALSA", "%smute\n", 7374 ucontrol->value.integer.value[0] ? 7375 "un" : ""); 7376 return volume_alsa_set_mute(!ucontrol->value.integer.value[0]); 7377 } 7378 7379 static struct snd_kcontrol_new volume_alsa_control_vol __initdata = { 7380 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7381 .name = "Console Playback Volume", 7382 .index = 0, 7383 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7384 .info = volume_alsa_vol_info, 7385 .get = volume_alsa_vol_get, 7386 }; 7387 7388 static struct snd_kcontrol_new volume_alsa_control_mute __initdata = { 7389 .iface = SNDRV_CTL_ELEM_IFACE_MIXER, 7390 .name = "Console Playback Switch", 7391 .index = 0, 7392 .access = SNDRV_CTL_ELEM_ACCESS_READ, 7393 .info = volume_alsa_mute_info, 7394 .get = volume_alsa_mute_get, 7395 }; 7396 7397 static void volume_suspend(void) 7398 { 7399 tpacpi_volume_checkpoint_nvram(); 7400 } 7401 7402 static void volume_resume(void) 7403 { 7404 if (software_mute_active) { 7405 if (volume_set_software_mute(false) < 0) 7406 pr_warn("Failed to restore software mute\n"); 7407 } else { 7408 volume_alsa_notify_change(); 7409 } 7410 } 7411 7412 static void volume_shutdown(void) 7413 { 7414 tpacpi_volume_checkpoint_nvram(); 7415 } 7416 7417 static void volume_exit(void) 7418 { 7419 if (alsa_card) { 7420 snd_card_free(alsa_card); 7421 alsa_card = NULL; 7422 } 7423 7424 tpacpi_volume_checkpoint_nvram(); 7425 7426 if (software_mute_active) 7427 volume_exit_software_mute(); 7428 } 7429 7430 static int __init volume_create_alsa_mixer(void) 7431 { 7432 struct snd_card *card; 7433 struct tpacpi_alsa_data *data; 7434 struct snd_kcontrol *ctl_vol; 7435 struct snd_kcontrol *ctl_mute; 7436 int rc; 7437 7438 rc = snd_card_new(&tpacpi_pdev->dev, 7439 alsa_index, alsa_id, THIS_MODULE, 7440 sizeof(struct tpacpi_alsa_data), &card); 7441 if (rc < 0 || !card) { 7442 pr_err("Failed to create ALSA card structures: %d\n", rc); 7443 return -ENODEV; 7444 } 7445 7446 BUG_ON(!card->private_data); 7447 data = card->private_data; 7448 data->card = card; 7449 7450 strscpy(card->driver, TPACPI_ALSA_DRVNAME); 7451 strscpy(card->shortname, TPACPI_ALSA_SHRTNAME); 7452 snprintf(card->mixername, sizeof(card->mixername), "ThinkPad EC %s", 7453 (thinkpad_id.ec_version_str) ? 7454 thinkpad_id.ec_version_str : "(unknown)"); 7455 snprintf(card->longname, sizeof(card->longname), 7456 "%s at EC reg 0x%02x, fw %s", card->shortname, TP_EC_AUDIO, 7457 (thinkpad_id.ec_version_str) ? 7458 thinkpad_id.ec_version_str : "unknown"); 7459 7460 if (volume_control_allowed) { 7461 volume_alsa_control_vol.put = volume_alsa_vol_put; 7462 volume_alsa_control_vol.access = 7463 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7464 7465 volume_alsa_control_mute.put = volume_alsa_mute_put; 7466 volume_alsa_control_mute.access = 7467 SNDRV_CTL_ELEM_ACCESS_READWRITE; 7468 } 7469 7470 if (!tp_features.mixer_no_level_control) { 7471 ctl_vol = snd_ctl_new1(&volume_alsa_control_vol, NULL); 7472 rc = snd_ctl_add(card, ctl_vol); 7473 if (rc < 0) { 7474 pr_err("Failed to create ALSA volume control: %d\n", 7475 rc); 7476 goto err_exit; 7477 } 7478 data->ctl_vol_id = &ctl_vol->id; 7479 } 7480 7481 ctl_mute = snd_ctl_new1(&volume_alsa_control_mute, NULL); 7482 rc = snd_ctl_add(card, ctl_mute); 7483 if (rc < 0) { 7484 pr_err("Failed to create ALSA mute control: %d\n", rc); 7485 goto err_exit; 7486 } 7487 data->ctl_mute_id = &ctl_mute->id; 7488 7489 rc = snd_card_register(card); 7490 if (rc < 0) { 7491 pr_err("Failed to register ALSA card: %d\n", rc); 7492 goto err_exit; 7493 } 7494 7495 alsa_card = card; 7496 return 0; 7497 7498 err_exit: 7499 snd_card_free(card); 7500 return -ENODEV; 7501 } 7502 7503 #define TPACPI_VOL_Q_MUTEONLY 0x0001 /* Mute-only control available */ 7504 #define TPACPI_VOL_Q_LEVEL 0x0002 /* Volume control available */ 7505 7506 static const struct tpacpi_quirk volume_quirk_table[] __initconst = { 7507 /* Whitelist volume level on all IBM by default */ 7508 { .vendor = PCI_VENDOR_ID_IBM, 7509 .bios = TPACPI_MATCH_ANY, 7510 .ec = TPACPI_MATCH_ANY, 7511 .quirks = TPACPI_VOL_Q_LEVEL }, 7512 7513 /* Lenovo models with volume control (needs confirmation) */ 7514 TPACPI_QEC_LNV('7', 'C', TPACPI_VOL_Q_LEVEL), /* R60/i */ 7515 TPACPI_QEC_LNV('7', 'E', TPACPI_VOL_Q_LEVEL), /* R60e/i */ 7516 TPACPI_QEC_LNV('7', '9', TPACPI_VOL_Q_LEVEL), /* T60/p */ 7517 TPACPI_QEC_LNV('7', 'B', TPACPI_VOL_Q_LEVEL), /* X60/s */ 7518 TPACPI_QEC_LNV('7', 'J', TPACPI_VOL_Q_LEVEL), /* X60t */ 7519 TPACPI_QEC_LNV('7', '7', TPACPI_VOL_Q_LEVEL), /* Z60 */ 7520 TPACPI_QEC_LNV('7', 'F', TPACPI_VOL_Q_LEVEL), /* Z61 */ 7521 7522 /* Whitelist mute-only on all Lenovo by default */ 7523 { .vendor = PCI_VENDOR_ID_LENOVO, 7524 .bios = TPACPI_MATCH_ANY, 7525 .ec = TPACPI_MATCH_ANY, 7526 .quirks = TPACPI_VOL_Q_MUTEONLY } 7527 }; 7528 7529 static int __init volume_init(struct ibm_init_struct *iibm) 7530 { 7531 unsigned long quirks; 7532 int rc; 7533 7534 vdbg_printk(TPACPI_DBG_INIT, "initializing volume subdriver\n"); 7535 7536 mutex_init(&volume_mutex); 7537 7538 /* 7539 * Check for module parameter bogosity, note that we 7540 * init volume_mode to TPACPI_VOL_MODE_MAX in order to be 7541 * able to detect "unspecified" 7542 */ 7543 if (volume_mode > TPACPI_VOL_MODE_MAX) 7544 return -EINVAL; 7545 7546 if (volume_mode == TPACPI_VOL_MODE_UCMS_STEP) { 7547 pr_err("UCMS step volume mode not implemented, please contact %s\n", 7548 TPACPI_MAIL); 7549 return -ENODEV; 7550 } 7551 7552 if (volume_capabilities >= TPACPI_VOL_CAP_MAX) 7553 return -EINVAL; 7554 7555 /* 7556 * The ALSA mixer is our primary interface. 7557 * When disabled, don't install the subdriver at all 7558 */ 7559 if (!alsa_enable) { 7560 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7561 "ALSA mixer disabled by parameter, not loading volume subdriver...\n"); 7562 return -ENODEV; 7563 } 7564 7565 quirks = tpacpi_check_quirks(volume_quirk_table, 7566 ARRAY_SIZE(volume_quirk_table)); 7567 7568 switch (volume_capabilities) { 7569 case TPACPI_VOL_CAP_AUTO: 7570 if (quirks & TPACPI_VOL_Q_MUTEONLY) 7571 tp_features.mixer_no_level_control = 1; 7572 else if (quirks & TPACPI_VOL_Q_LEVEL) 7573 tp_features.mixer_no_level_control = 0; 7574 else 7575 return -ENODEV; /* no mixer */ 7576 break; 7577 case TPACPI_VOL_CAP_VOLMUTE: 7578 tp_features.mixer_no_level_control = 0; 7579 break; 7580 case TPACPI_VOL_CAP_MUTEONLY: 7581 tp_features.mixer_no_level_control = 1; 7582 break; 7583 default: 7584 return -ENODEV; 7585 } 7586 7587 if (volume_capabilities != TPACPI_VOL_CAP_AUTO) 7588 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7589 "using user-supplied volume_capabilities=%d\n", 7590 volume_capabilities); 7591 7592 if (volume_mode == TPACPI_VOL_MODE_AUTO || 7593 volume_mode == TPACPI_VOL_MODE_MAX) { 7594 volume_mode = TPACPI_VOL_MODE_ECNVRAM; 7595 7596 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7597 "driver auto-selected volume_mode=%d\n", 7598 volume_mode); 7599 } else { 7600 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7601 "using user-supplied volume_mode=%d\n", 7602 volume_mode); 7603 } 7604 7605 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7606 "mute is supported, volume control is %s\n", 7607 str_supported(!tp_features.mixer_no_level_control)); 7608 7609 if (software_mute_requested && volume_set_software_mute(true) == 0) { 7610 software_mute_active = true; 7611 } else { 7612 rc = volume_create_alsa_mixer(); 7613 if (rc) { 7614 pr_err("Could not create the ALSA mixer interface\n"); 7615 return rc; 7616 } 7617 7618 pr_info("Console audio control enabled, mode: %s\n", 7619 (volume_control_allowed) ? 7620 "override (read/write)" : 7621 "monitor (read only)"); 7622 } 7623 7624 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_MIXER, 7625 "registering volume hotkeys as change notification\n"); 7626 tpacpi_hotkey_driver_mask_set(hotkey_driver_mask 7627 | TP_ACPI_HKEY_VOLUP_MASK 7628 | TP_ACPI_HKEY_VOLDWN_MASK 7629 | TP_ACPI_HKEY_MUTE_MASK); 7630 7631 return 0; 7632 } 7633 7634 static int volume_read(struct seq_file *m) 7635 { 7636 u8 status; 7637 7638 if (volume_get_status(&status) < 0) { 7639 seq_printf(m, "level:\t\tunreadable\n"); 7640 } else { 7641 if (tp_features.mixer_no_level_control) 7642 seq_printf(m, "level:\t\tunsupported\n"); 7643 else 7644 seq_printf(m, "level:\t\t%d\n", 7645 status & TP_EC_AUDIO_LVL_MSK); 7646 7647 seq_printf(m, "mute:\t\t%s\n", str_on_off(status & BIT(TP_EC_AUDIO_MUTESW))); 7648 7649 if (volume_control_allowed) { 7650 seq_printf(m, "commands:\tunmute, mute\n"); 7651 if (!tp_features.mixer_no_level_control) { 7652 seq_printf(m, "commands:\tup, down\n"); 7653 seq_printf(m, "commands:\tlevel <level> (<level> is 0-%d)\n", 7654 TP_EC_VOLUME_MAX); 7655 } 7656 } 7657 } 7658 7659 return 0; 7660 } 7661 7662 static int volume_write(char *buf) 7663 { 7664 u8 s; 7665 u8 new_level, new_mute; 7666 int l; 7667 char *cmd; 7668 int rc; 7669 7670 /* 7671 * We do allow volume control at driver startup, so that the 7672 * user can set initial state through the volume=... parameter hack. 7673 */ 7674 if (!volume_control_allowed && tpacpi_lifecycle != TPACPI_LIFE_INIT) { 7675 if (unlikely(!tp_warned.volume_ctrl_forbidden)) { 7676 tp_warned.volume_ctrl_forbidden = 1; 7677 pr_notice("Console audio control in monitor mode, changes are not allowed\n"); 7678 pr_notice("Use the volume_control=1 module parameter to enable volume control\n"); 7679 } 7680 return -EPERM; 7681 } 7682 7683 rc = volume_get_status(&s); 7684 if (rc < 0) 7685 return rc; 7686 7687 new_level = s & TP_EC_AUDIO_LVL_MSK; 7688 new_mute = s & TP_EC_AUDIO_MUTESW_MSK; 7689 7690 while ((cmd = strsep(&buf, ","))) { 7691 if (!tp_features.mixer_no_level_control) { 7692 if (strstarts(cmd, "up")) { 7693 if (new_mute) 7694 new_mute = 0; 7695 else if (new_level < TP_EC_VOLUME_MAX) 7696 new_level++; 7697 continue; 7698 } else if (strstarts(cmd, "down")) { 7699 if (new_mute) 7700 new_mute = 0; 7701 else if (new_level > 0) 7702 new_level--; 7703 continue; 7704 } else if (sscanf(cmd, "level %u", &l) == 1 && 7705 l >= 0 && l <= TP_EC_VOLUME_MAX) { 7706 new_level = l; 7707 continue; 7708 } 7709 } 7710 if (strstarts(cmd, "mute")) 7711 new_mute = TP_EC_AUDIO_MUTESW_MSK; 7712 else if (strstarts(cmd, "unmute")) 7713 new_mute = 0; 7714 else 7715 return -EINVAL; 7716 } 7717 7718 if (tp_features.mixer_no_level_control) { 7719 tpacpi_disclose_usertask("procfs volume", "%smute\n", 7720 new_mute ? "" : "un"); 7721 rc = volume_set_mute(!!new_mute); 7722 } else { 7723 tpacpi_disclose_usertask("procfs volume", 7724 "%smute and set level to %d\n", 7725 new_mute ? "" : "un", new_level); 7726 rc = volume_set_status(new_mute | new_level); 7727 } 7728 volume_alsa_notify_change(); 7729 7730 return (rc == -EINTR) ? -ERESTARTSYS : rc; 7731 } 7732 7733 static struct ibm_struct volume_driver_data = { 7734 .name = "volume", 7735 .read = volume_read, 7736 .write = volume_write, 7737 .exit = volume_exit, 7738 .suspend = volume_suspend, 7739 .resume = volume_resume, 7740 .shutdown = volume_shutdown, 7741 }; 7742 7743 #else /* !CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7744 7745 #define alsa_card NULL 7746 7747 static inline void volume_alsa_notify_change(void) 7748 { 7749 } 7750 7751 static int __init volume_init(struct ibm_init_struct *iibm) 7752 { 7753 pr_info("volume: disabled as there is no ALSA support in this kernel\n"); 7754 7755 return -ENODEV; 7756 } 7757 7758 static struct ibm_struct volume_driver_data = { 7759 .name = "volume", 7760 }; 7761 7762 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 7763 7764 /************************************************************************* 7765 * Fan subdriver 7766 */ 7767 7768 /* 7769 * FAN ACCESS MODES 7770 * 7771 * TPACPI_FAN_RD_ACPI_GFAN: 7772 * ACPI GFAN method: returns fan level 7773 * 7774 * see TPACPI_FAN_WR_ACPI_SFAN 7775 * EC 0x2f (HFSP) not available if GFAN exists 7776 * 7777 * TPACPI_FAN_WR_ACPI_SFAN: 7778 * ACPI SFAN method: sets fan level, 0 (stop) to 7 (max) 7779 * 7780 * EC 0x2f (HFSP) might be available *for reading*, but do not use 7781 * it for writing. 7782 * 7783 * TPACPI_FAN_RD_ACPI_FANG: 7784 * ACPI FANG method: returns fan control register 7785 * 7786 * Takes one parameter which is 0x8100 plus the offset to EC memory 7787 * address 0xf500 and returns the byte at this address. 7788 * 7789 * 0xf500: 7790 * When the value is less than 9 automatic mode is enabled 7791 * 0xf502: 7792 * Contains the current fan speed from 0-100% 7793 * 0xf506: 7794 * Bit 7 has to be set in order to enable manual control by 7795 * writing a value >= 9 to 0xf500 7796 * 7797 * TPACPI_FAN_WR_ACPI_FANW: 7798 * ACPI FANW method: sets fan control registers 7799 * 7800 * Takes 0x8100 plus the offset to EC memory address 0xf500 and the 7801 * value to be written there as parameters. 7802 * 7803 * see TPACPI_FAN_RD_ACPI_FANG 7804 * 7805 * TPACPI_FAN_WR_TPEC: 7806 * ThinkPad EC register 0x2f (HFSP): fan control loop mode 7807 * Supported on almost all ThinkPads 7808 * 7809 * Fan speed changes of any sort (including those caused by the 7810 * disengaged mode) are usually done slowly by the firmware as the 7811 * maximum amount of fan duty cycle change per second seems to be 7812 * limited. 7813 * 7814 * Reading is not available if GFAN exists. 7815 * Writing is not available if SFAN exists. 7816 * 7817 * Bits 7818 * 7 automatic mode engaged; 7819 * (default operation mode of the ThinkPad) 7820 * fan level is ignored in this mode. 7821 * 6 full speed mode (takes precedence over bit 7); 7822 * not available on all thinkpads. May disable 7823 * the tachometer while the fan controller ramps up 7824 * the speed (which can take up to a few *minutes*). 7825 * Speeds up fan to 100% duty-cycle, which is far above 7826 * the standard RPM levels. It is not impossible that 7827 * it could cause hardware damage. 7828 * 5-3 unused in some models. Extra bits for fan level 7829 * in others, but still useless as all values above 7830 * 7 map to the same speed as level 7 in these models. 7831 * 2-0 fan level (0..7 usually) 7832 * 0x00 = stop 7833 * 0x07 = max (set when temperatures critical) 7834 * Some ThinkPads may have other levels, see 7835 * TPACPI_FAN_WR_ACPI_FANS (X31/X40/X41) 7836 * 7837 * FIRMWARE BUG: on some models, EC 0x2f might not be initialized at 7838 * boot. Apparently the EC does not initialize it, so unless ACPI DSDT 7839 * does so, its initial value is meaningless (0x07). 7840 * 7841 * For firmware bugs, refer to: 7842 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7843 * 7844 * ---- 7845 * 7846 * ThinkPad EC register 0x84 (LSB), 0x85 (MSB): 7847 * Main fan tachometer reading (in RPM) 7848 * 7849 * This register is present on all ThinkPads with a new-style EC, and 7850 * it is known not to be present on the A21m/e, and T22, as there is 7851 * something else in offset 0x84 according to the ACPI DSDT. Other 7852 * ThinkPads from this same time period (and earlier) probably lack the 7853 * tachometer as well. 7854 * 7855 * Unfortunately a lot of ThinkPads with new-style ECs but whose firmware 7856 * was never fixed by IBM to report the EC firmware version string 7857 * probably support the tachometer (like the early X models), so 7858 * detecting it is quite hard. We need more data to know for sure. 7859 * 7860 * FIRMWARE BUG: always read 0x84 first, otherwise incorrect readings 7861 * might result. 7862 * 7863 * FIRMWARE BUG: may go stale while the EC is switching to full speed 7864 * mode. 7865 * 7866 * For firmware bugs, refer to: 7867 * https://thinkwiki.org/wiki/Embedded_Controller_Firmware#Firmware_Issues 7868 * 7869 * ---- 7870 * 7871 * ThinkPad EC register 0x31 bit 0 (only on select models) 7872 * 7873 * When bit 0 of EC register 0x31 is zero, the tachometer registers 7874 * show the speed of the main fan. When bit 0 of EC register 0x31 7875 * is one, the tachometer registers show the speed of the auxiliary 7876 * fan. 7877 * 7878 * Fan control seems to affect both fans, regardless of the state 7879 * of this bit. 7880 * 7881 * So far, only the firmware for the X60/X61 non-tablet versions 7882 * seem to support this (firmware TP-7M). 7883 * 7884 * TPACPI_FAN_WR_ACPI_FANS: 7885 * ThinkPad X31, X40, X41. Not available in the X60. 7886 * 7887 * FANS ACPI handle: takes three arguments: low speed, medium speed, 7888 * high speed. ACPI DSDT seems to map these three speeds to levels 7889 * as follows: STOP LOW LOW MED MED HIGH HIGH HIGH HIGH 7890 * (this map is stored on FAN0..FAN8 as "0,1,1,2,2,3,3,3,3") 7891 * 7892 * The speeds are stored on handles 7893 * (FANA:FAN9), (FANC:FANB), (FANE:FAND). 7894 * 7895 * There are three default speed sets, accessible as handles: 7896 * FS1L,FS1M,FS1H; FS2L,FS2M,FS2H; FS3L,FS3M,FS3H 7897 * 7898 * ACPI DSDT switches which set is in use depending on various 7899 * factors. 7900 * 7901 * TPACPI_FAN_WR_TPEC is also available and should be used to 7902 * command the fan. The X31/X40/X41 seems to have 8 fan levels, 7903 * but the ACPI tables just mention level 7. 7904 * 7905 * TPACPI_FAN_RD_TPEC_NS: 7906 * This mode is used for a few ThinkPads (L13 Yoga Gen2, X13 Yoga Gen2 etc.) 7907 * that are using non-standard EC locations for reporting fan speeds. 7908 * Currently these platforms only provide fan rpm reporting. 7909 * 7910 */ 7911 7912 #define FAN_RPM_CAL_CONST 491520 /* FAN RPM calculation offset for some non-standard ECFW */ 7913 7914 #define FAN_NS_CTRL_STATUS BIT(2) /* Bit which determines control is enabled or not */ 7915 #define FAN_NS_CTRL BIT(4) /* Bit which determines control is by host or EC */ 7916 #define FAN_CLOCK_TPM (22500*60) /* Ticks per minute for a 22.5 kHz clock */ 7917 7918 enum { /* Fan control constants */ 7919 fan_status_offset = 0x2f, /* EC register 0x2f */ 7920 fan_rpm_offset = 0x84, /* EC register 0x84: LSB, 0x85 MSB (RPM) 7921 * 0x84 must be read before 0x85 */ 7922 fan_select_offset = 0x31, /* EC register 0x31 (Firmware 7M) 7923 bit 0 selects which fan is active */ 7924 7925 fan_status_offset_ns = 0x93, /* Special status/control offset for non-standard EC Fan1 */ 7926 fan2_status_offset_ns = 0x96, /* Special status/control offset for non-standard EC Fan2 */ 7927 fan_rpm_status_ns = 0x95, /* Special offset for Fan1 RPM status for non-standard EC */ 7928 fan2_rpm_status_ns = 0x98, /* Special offset for Fan2 RPM status for non-standard EC */ 7929 7930 TP_EC_FAN_FULLSPEED = 0x40, /* EC fan mode: full speed */ 7931 TP_EC_FAN_AUTO = 0x80, /* EC fan mode: auto fan control */ 7932 7933 TPACPI_FAN_LAST_LEVEL = 0x100, /* Use cached last-seen fan level */ 7934 }; 7935 7936 enum fan_status_access_mode { 7937 TPACPI_FAN_NONE = 0, /* No fan status or control */ 7938 TPACPI_FAN_RD_ACPI_GFAN, /* Use ACPI GFAN */ 7939 TPACPI_FAN_RD_ACPI_FANG, /* Use ACPI FANG */ 7940 TPACPI_FAN_RD_TPEC, /* Use ACPI EC regs 0x2f, 0x84-0x85 */ 7941 TPACPI_FAN_RD_TPEC_NS, /* Use non-standard ACPI EC regs (eg: L13 Yoga gen2 etc.) */ 7942 }; 7943 7944 enum fan_control_access_mode { 7945 TPACPI_FAN_WR_NONE = 0, /* No fan control */ 7946 TPACPI_FAN_WR_ACPI_SFAN, /* Use ACPI SFAN */ 7947 TPACPI_FAN_WR_ACPI_FANW, /* Use ACPI FANW */ 7948 TPACPI_FAN_WR_TPEC, /* Use ACPI EC reg 0x2f */ 7949 TPACPI_FAN_WR_ACPI_FANS, /* Use ACPI FANS and EC reg 0x2f */ 7950 }; 7951 7952 enum fan_control_commands { 7953 TPACPI_FAN_CMD_SPEED = 0x0001, /* speed command */ 7954 TPACPI_FAN_CMD_LEVEL = 0x0002, /* level command */ 7955 TPACPI_FAN_CMD_ENABLE = 0x0004, /* enable/disable cmd, 7956 * and also watchdog cmd */ 7957 }; 7958 7959 static bool fan_control_allowed; 7960 7961 static enum fan_status_access_mode fan_status_access_mode; 7962 static enum fan_control_access_mode fan_control_access_mode; 7963 static enum fan_control_commands fan_control_commands; 7964 7965 static u8 fan_control_initial_status; 7966 static u8 fan_control_desired_level; 7967 static u8 fan_control_resume_level; 7968 static int fan_watchdog_maxinterval; 7969 7970 static bool fan_with_ns_addr; 7971 static bool ecfw_with_fan_dec_rpm; 7972 static bool fan_speed_in_tpr; 7973 7974 static struct mutex fan_mutex; 7975 7976 static void fan_watchdog_fire(struct work_struct *ignored); 7977 static DECLARE_DELAYED_WORK(fan_watchdog_task, fan_watchdog_fire); 7978 7979 TPACPI_HANDLE(fans, ec, "FANS"); /* X31, X40, X41 */ 7980 TPACPI_HANDLE(gfan, ec, "GFAN", /* 570 */ 7981 "\\FSPD", /* 600e/x, 770e, 770x */ 7982 ); /* all others */ 7983 TPACPI_HANDLE(fang, ec, "FANG", /* E531 */ 7984 ); /* all others */ 7985 TPACPI_HANDLE(sfan, ec, "SFAN", /* 570 */ 7986 "JFNS", /* 770x-JL */ 7987 ); /* all others */ 7988 TPACPI_HANDLE(fanw, ec, "FANW", /* E531 */ 7989 ); /* all others */ 7990 7991 /* 7992 * Unitialized HFSP quirk: ACPI DSDT and EC fail to initialize the 7993 * HFSP register at boot, so it contains 0x07 but the Thinkpad could 7994 * be in auto mode (0x80). 7995 * 7996 * This is corrected by any write to HFSP either by the driver, or 7997 * by the firmware. 7998 * 7999 * We assume 0x07 really means auto mode while this quirk is active, 8000 * as this is far more likely than the ThinkPad being in level 7, 8001 * which is only used by the firmware during thermal emergencies. 8002 * 8003 * Enable for TP-1Y (T43), TP-78 (R51e), TP-76 (R52), 8004 * TP-70 (T43, R52), which are known to be buggy. 8005 */ 8006 8007 static void fan_quirk1_setup(void) 8008 { 8009 if (fan_control_initial_status == 0x07) { 8010 pr_notice("fan_init: initial fan status is unknown, assuming it is in auto mode\n"); 8011 tp_features.fan_ctrl_status_undef = 1; 8012 } 8013 } 8014 8015 static void fan_quirk1_handle(u8 *fan_status) 8016 { 8017 if (unlikely(tp_features.fan_ctrl_status_undef)) { 8018 if (*fan_status != fan_control_initial_status) { 8019 /* something changed the HFSP regisnter since 8020 * driver init time, so it is not undefined 8021 * anymore */ 8022 tp_features.fan_ctrl_status_undef = 0; 8023 } else { 8024 /* Return most likely status. In fact, it 8025 * might be the only possible status */ 8026 *fan_status = TP_EC_FAN_AUTO; 8027 } 8028 } 8029 } 8030 8031 /* Select main fan on X60/X61, NOOP on others */ 8032 static bool fan_select_fan1(void) 8033 { 8034 if (tp_features.second_fan) { 8035 u8 val; 8036 8037 if (ec_read(fan_select_offset, &val) < 0) 8038 return false; 8039 val &= 0xFEU; 8040 if (ec_write(fan_select_offset, val) < 0) 8041 return false; 8042 } 8043 return true; 8044 } 8045 8046 /* Select secondary fan on X60/X61 */ 8047 static bool fan_select_fan2(void) 8048 { 8049 u8 val; 8050 8051 if (!tp_features.second_fan) 8052 return false; 8053 8054 if (ec_read(fan_select_offset, &val) < 0) 8055 return false; 8056 val |= 0x01U; 8057 if (ec_write(fan_select_offset, val) < 0) 8058 return false; 8059 8060 return true; 8061 } 8062 8063 static void fan_update_desired_level(u8 status) 8064 { 8065 lockdep_assert_held(&fan_mutex); 8066 8067 if ((status & 8068 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8069 if (status > 7) 8070 fan_control_desired_level = 7; 8071 else 8072 fan_control_desired_level = status; 8073 } 8074 } 8075 8076 static int fan_get_status(u8 *status) 8077 { 8078 u8 s; 8079 8080 /* TODO: 8081 * Add TPACPI_FAN_RD_ACPI_FANS ? */ 8082 8083 switch (fan_status_access_mode) { 8084 case TPACPI_FAN_RD_ACPI_GFAN: { 8085 /* 570, 600e/x, 770e, 770x */ 8086 int res; 8087 8088 if (unlikely(!acpi_evalf(gfan_handle, &res, NULL, "d"))) 8089 return -EIO; 8090 8091 if (likely(status)) 8092 *status = res & 0x07; 8093 8094 break; 8095 } 8096 case TPACPI_FAN_RD_ACPI_FANG: { 8097 /* E531 */ 8098 int mode, speed; 8099 8100 if (unlikely(!acpi_evalf(fang_handle, &mode, NULL, "dd", 0x8100))) 8101 return -EIO; 8102 if (unlikely(!acpi_evalf(fang_handle, &speed, NULL, "dd", 0x8102))) 8103 return -EIO; 8104 8105 if (likely(status)) { 8106 *status = speed * 7 / 100; 8107 if (mode < 9) 8108 *status |= TP_EC_FAN_AUTO; 8109 } 8110 8111 break; 8112 } 8113 case TPACPI_FAN_RD_TPEC: 8114 /* all except 570, 600e/x, 770e, 770x */ 8115 if (unlikely(!acpi_ec_read(fan_status_offset, &s))) 8116 return -EIO; 8117 8118 if (likely(status)) { 8119 *status = s; 8120 fan_quirk1_handle(status); 8121 } 8122 8123 break; 8124 case TPACPI_FAN_RD_TPEC_NS: 8125 /* Default mode is AUTO which means controlled by EC */ 8126 if (!acpi_ec_read(fan_status_offset_ns, &s)) 8127 return -EIO; 8128 8129 if (status) 8130 *status = s; 8131 8132 break; 8133 8134 default: 8135 return -ENXIO; 8136 } 8137 8138 return 0; 8139 } 8140 8141 static int fan_get_status_safe(u8 *status) 8142 { 8143 int rc; 8144 u8 s; 8145 8146 if (mutex_lock_killable(&fan_mutex)) 8147 return -ERESTARTSYS; 8148 rc = fan_get_status(&s); 8149 /* NS EC doesn't have register with level settings */ 8150 if (!rc && !fan_with_ns_addr) 8151 fan_update_desired_level(s); 8152 mutex_unlock(&fan_mutex); 8153 8154 if (rc) 8155 return rc; 8156 if (status) 8157 *status = s; 8158 8159 return 0; 8160 } 8161 8162 static int fan_get_speed(unsigned int *speed) 8163 { 8164 u8 hi, lo; 8165 8166 switch (fan_status_access_mode) { 8167 case TPACPI_FAN_RD_TPEC: 8168 /* all except 570, 600e/x, 770e, 770x */ 8169 if (unlikely(!fan_select_fan1())) 8170 return -EIO; 8171 if (unlikely(!acpi_ec_read(fan_rpm_offset, &lo) || 8172 !acpi_ec_read(fan_rpm_offset + 1, &hi))) 8173 return -EIO; 8174 8175 if (likely(speed)) { 8176 *speed = (hi << 8) | lo; 8177 if (fan_speed_in_tpr && *speed != 0) 8178 *speed = FAN_CLOCK_TPM / *speed; 8179 } 8180 break; 8181 case TPACPI_FAN_RD_TPEC_NS: 8182 if (!acpi_ec_read(fan_rpm_status_ns, &lo)) 8183 return -EIO; 8184 8185 if (speed) 8186 *speed = lo ? FAN_RPM_CAL_CONST / lo : 0; 8187 break; 8188 8189 default: 8190 return -ENXIO; 8191 } 8192 8193 return 0; 8194 } 8195 8196 static int fan2_get_speed(unsigned int *speed) 8197 { 8198 u8 hi, lo, status; 8199 bool rc; 8200 8201 switch (fan_status_access_mode) { 8202 case TPACPI_FAN_RD_TPEC: 8203 /* all except 570, 600e/x, 770e, 770x */ 8204 if (unlikely(!fan_select_fan2())) 8205 return -EIO; 8206 rc = !acpi_ec_read(fan_rpm_offset, &lo) || 8207 !acpi_ec_read(fan_rpm_offset + 1, &hi); 8208 fan_select_fan1(); /* play it safe */ 8209 if (rc) 8210 return -EIO; 8211 8212 if (likely(speed)) { 8213 *speed = (hi << 8) | lo; 8214 if (fan_speed_in_tpr && *speed != 0) 8215 *speed = FAN_CLOCK_TPM / *speed; 8216 } 8217 break; 8218 8219 case TPACPI_FAN_RD_TPEC_NS: 8220 rc = !acpi_ec_read(fan2_status_offset_ns, &status); 8221 if (rc) 8222 return -EIO; 8223 if (!(status & FAN_NS_CTRL_STATUS)) { 8224 pr_info("secondary fan control not supported\n"); 8225 return -EIO; 8226 } 8227 rc = !acpi_ec_read(fan2_rpm_status_ns, &lo); 8228 if (rc) 8229 return -EIO; 8230 if (speed) 8231 *speed = lo ? FAN_RPM_CAL_CONST / lo : 0; 8232 break; 8233 case TPACPI_FAN_RD_ACPI_FANG: { 8234 /* E531 */ 8235 int speed_tmp; 8236 8237 if (unlikely(!acpi_evalf(fang_handle, &speed_tmp, NULL, "dd", 0x8102))) 8238 return -EIO; 8239 8240 if (likely(speed)) 8241 *speed = speed_tmp * 65535 / 100; 8242 break; 8243 } 8244 8245 default: 8246 return -ENXIO; 8247 } 8248 8249 return 0; 8250 } 8251 8252 static int fan_set_level(int level) 8253 { 8254 if (!fan_control_allowed) 8255 return -EPERM; 8256 8257 switch (fan_control_access_mode) { 8258 case TPACPI_FAN_WR_ACPI_SFAN: 8259 if ((level < 0) || (level > 7)) 8260 return -EINVAL; 8261 8262 if (tp_features.second_fan_ctl) { 8263 if (!fan_select_fan2() || 8264 !acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) { 8265 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8266 tp_features.second_fan_ctl = 0; 8267 } 8268 fan_select_fan1(); 8269 } 8270 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", level)) 8271 return -EIO; 8272 break; 8273 8274 case TPACPI_FAN_WR_ACPI_FANS: 8275 case TPACPI_FAN_WR_TPEC: 8276 if (!(level & TP_EC_FAN_AUTO) && 8277 !(level & TP_EC_FAN_FULLSPEED) && 8278 ((level < 0) || (level > 7))) 8279 return -EINVAL; 8280 8281 /* safety net should the EC not support AUTO 8282 * or FULLSPEED mode bits and just ignore them */ 8283 if (level & TP_EC_FAN_FULLSPEED) 8284 level |= 7; /* safety min speed 7 */ 8285 else if (level & TP_EC_FAN_AUTO) 8286 level |= 4; /* safety min speed 4 */ 8287 8288 if (tp_features.second_fan_ctl) { 8289 if (!fan_select_fan2() || 8290 !acpi_ec_write(fan_status_offset, level)) { 8291 pr_warn("Couldn't set 2nd fan level, disabling support\n"); 8292 tp_features.second_fan_ctl = 0; 8293 } 8294 fan_select_fan1(); 8295 8296 } 8297 if (!acpi_ec_write(fan_status_offset, level)) 8298 return -EIO; 8299 else 8300 tp_features.fan_ctrl_status_undef = 0; 8301 break; 8302 8303 case TPACPI_FAN_WR_ACPI_FANW: 8304 if (!(level & TP_EC_FAN_AUTO) && (level < 0 || level > 7)) 8305 return -EINVAL; 8306 if (level & TP_EC_FAN_FULLSPEED) 8307 return -EINVAL; 8308 8309 if (level & TP_EC_FAN_AUTO) { 8310 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x05)) { 8311 return -EIO; 8312 } 8313 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0x00)) { 8314 return -EIO; 8315 } 8316 } else { 8317 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) { 8318 return -EIO; 8319 } 8320 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) { 8321 return -EIO; 8322 } 8323 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8102, level * 100 / 7)) { 8324 return -EIO; 8325 } 8326 } 8327 break; 8328 8329 default: 8330 return -ENXIO; 8331 } 8332 8333 vdbg_printk(TPACPI_DBG_FAN, 8334 "fan control: set fan control register to 0x%02x\n", level); 8335 return 0; 8336 } 8337 8338 static int fan_set_level_safe(int level) 8339 { 8340 int rc; 8341 8342 if (!fan_control_allowed) 8343 return -EPERM; 8344 8345 if (mutex_lock_killable(&fan_mutex)) 8346 return -ERESTARTSYS; 8347 8348 if (level == TPACPI_FAN_LAST_LEVEL) 8349 level = fan_control_desired_level; 8350 8351 rc = fan_set_level(level); 8352 if (!rc) 8353 fan_update_desired_level(level); 8354 8355 mutex_unlock(&fan_mutex); 8356 return rc; 8357 } 8358 8359 static int fan_set_enable(void) 8360 { 8361 u8 s = 0; 8362 int rc; 8363 8364 if (!fan_control_allowed) 8365 return -EPERM; 8366 8367 if (mutex_lock_killable(&fan_mutex)) 8368 return -ERESTARTSYS; 8369 8370 switch (fan_control_access_mode) { 8371 case TPACPI_FAN_WR_ACPI_FANS: 8372 case TPACPI_FAN_WR_TPEC: 8373 rc = fan_get_status(&s); 8374 if (rc) 8375 break; 8376 8377 /* Don't go out of emergency fan mode */ 8378 if (s != 7) { 8379 s &= 0x07; 8380 s |= TP_EC_FAN_AUTO | 4; /* min fan speed 4 */ 8381 } 8382 8383 if (!acpi_ec_write(fan_status_offset, s)) 8384 rc = -EIO; 8385 else { 8386 tp_features.fan_ctrl_status_undef = 0; 8387 rc = 0; 8388 } 8389 break; 8390 8391 case TPACPI_FAN_WR_ACPI_SFAN: 8392 rc = fan_get_status(&s); 8393 if (rc) 8394 break; 8395 8396 s &= 0x07; 8397 8398 /* Set fan to at least level 4 */ 8399 s |= 4; 8400 8401 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", s)) 8402 rc = -EIO; 8403 else 8404 rc = 0; 8405 break; 8406 8407 case TPACPI_FAN_WR_ACPI_FANW: 8408 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x05)) { 8409 rc = -EIO; 8410 break; 8411 } 8412 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0x00)) { 8413 rc = -EIO; 8414 break; 8415 } 8416 8417 rc = 0; 8418 break; 8419 8420 default: 8421 rc = -ENXIO; 8422 } 8423 8424 mutex_unlock(&fan_mutex); 8425 8426 if (!rc) 8427 vdbg_printk(TPACPI_DBG_FAN, 8428 "fan control: set fan control register to 0x%02x\n", 8429 s); 8430 return rc; 8431 } 8432 8433 static int fan_set_disable(void) 8434 { 8435 int rc; 8436 8437 if (!fan_control_allowed) 8438 return -EPERM; 8439 8440 if (mutex_lock_killable(&fan_mutex)) 8441 return -ERESTARTSYS; 8442 8443 rc = 0; 8444 switch (fan_control_access_mode) { 8445 case TPACPI_FAN_WR_ACPI_FANS: 8446 case TPACPI_FAN_WR_TPEC: 8447 if (!acpi_ec_write(fan_status_offset, 0x00)) 8448 rc = -EIO; 8449 else { 8450 fan_control_desired_level = 0; 8451 tp_features.fan_ctrl_status_undef = 0; 8452 } 8453 break; 8454 8455 case TPACPI_FAN_WR_ACPI_SFAN: 8456 if (!acpi_evalf(sfan_handle, NULL, NULL, "vd", 0x00)) 8457 rc = -EIO; 8458 else 8459 fan_control_desired_level = 0; 8460 break; 8461 8462 case TPACPI_FAN_WR_ACPI_FANW: 8463 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) { 8464 rc = -EIO; 8465 break; 8466 } 8467 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) { 8468 rc = -EIO; 8469 break; 8470 } 8471 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8102, 0x00)) { 8472 rc = -EIO; 8473 break; 8474 } 8475 rc = 0; 8476 break; 8477 8478 default: 8479 rc = -ENXIO; 8480 } 8481 8482 if (!rc) 8483 vdbg_printk(TPACPI_DBG_FAN, 8484 "fan control: set fan control register to 0\n"); 8485 8486 mutex_unlock(&fan_mutex); 8487 return rc; 8488 } 8489 8490 static int fan_set_speed(int speed) 8491 { 8492 int rc; 8493 8494 if (!fan_control_allowed) 8495 return -EPERM; 8496 8497 if (mutex_lock_killable(&fan_mutex)) 8498 return -ERESTARTSYS; 8499 8500 rc = 0; 8501 switch (fan_control_access_mode) { 8502 case TPACPI_FAN_WR_ACPI_FANS: 8503 if (speed >= 0 && speed <= 65535) { 8504 if (!acpi_evalf(fans_handle, NULL, NULL, "vddd", 8505 speed, speed, speed)) 8506 rc = -EIO; 8507 } else 8508 rc = -EINVAL; 8509 break; 8510 8511 case TPACPI_FAN_WR_ACPI_FANW: 8512 if (speed >= 0 && speed <= 65535) { 8513 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8106, 0x45)) { 8514 rc = -EIO; 8515 break; 8516 } 8517 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 0x8100, 0xff)) { 8518 rc = -EIO; 8519 break; 8520 } 8521 if (!acpi_evalf(fanw_handle, NULL, NULL, "vdd", 8522 0x8102, speed * 100 / 65535)) 8523 rc = -EIO; 8524 } else 8525 rc = -EINVAL; 8526 break; 8527 8528 default: 8529 rc = -ENXIO; 8530 } 8531 8532 mutex_unlock(&fan_mutex); 8533 return rc; 8534 } 8535 8536 static void fan_watchdog_reset(void) 8537 { 8538 if (fan_control_access_mode == TPACPI_FAN_WR_NONE) 8539 return; 8540 8541 if (fan_watchdog_maxinterval > 0 && 8542 tpacpi_lifecycle != TPACPI_LIFE_EXITING) 8543 mod_delayed_work(tpacpi_wq, &fan_watchdog_task, 8544 secs_to_jiffies(fan_watchdog_maxinterval)); 8545 else 8546 cancel_delayed_work(&fan_watchdog_task); 8547 } 8548 8549 static void fan_watchdog_fire(struct work_struct *ignored) 8550 { 8551 int rc; 8552 8553 if (tpacpi_lifecycle != TPACPI_LIFE_RUNNING) 8554 return; 8555 8556 pr_notice("fan watchdog: enabling fan\n"); 8557 rc = fan_set_enable(); 8558 if (rc < 0) { 8559 pr_err("fan watchdog: error %d while enabling fan, will try again later...\n", 8560 rc); 8561 /* reschedule for later */ 8562 fan_watchdog_reset(); 8563 } 8564 } 8565 8566 /* 8567 * SYSFS fan layout: hwmon compatible (device) 8568 * 8569 * pwm*_enable: 8570 * 0: "disengaged" mode 8571 * 1: manual mode 8572 * 2: native EC "auto" mode (recommended, hardware default) 8573 * 8574 * pwm*: set speed in manual mode, ignored otherwise. 8575 * 0 is level 0; 255 is level 7. Intermediate points done with linear 8576 * interpolation. 8577 * 8578 * fan*_input: tachometer reading, RPM 8579 * 8580 * 8581 * SYSFS fan layout: extensions 8582 * 8583 * fan_watchdog (driver): 8584 * fan watchdog interval in seconds, 0 disables (default), max 120 8585 */ 8586 8587 /* sysfs fan pwm1_enable ----------------------------------------------- */ 8588 static ssize_t fan_pwm1_enable_show(struct device *dev, 8589 struct device_attribute *attr, 8590 char *buf) 8591 { 8592 int res, mode; 8593 u8 status; 8594 8595 res = fan_get_status_safe(&status); 8596 if (res) 8597 return res; 8598 8599 if (status & TP_EC_FAN_FULLSPEED) { 8600 mode = 0; 8601 } else if (status & TP_EC_FAN_AUTO) { 8602 mode = 2; 8603 } else 8604 mode = 1; 8605 8606 return sysfs_emit(buf, "%d\n", mode); 8607 } 8608 8609 static ssize_t fan_pwm1_enable_store(struct device *dev, 8610 struct device_attribute *attr, 8611 const char *buf, size_t count) 8612 { 8613 unsigned long t; 8614 int res, level; 8615 8616 if (parse_strtoul(buf, 2, &t)) 8617 return -EINVAL; 8618 8619 tpacpi_disclose_usertask("hwmon pwm1_enable", 8620 "set fan mode to %lu\n", t); 8621 8622 switch (t) { 8623 case 0: 8624 level = TP_EC_FAN_FULLSPEED; 8625 break; 8626 case 1: 8627 level = TPACPI_FAN_LAST_LEVEL; 8628 break; 8629 case 2: 8630 level = TP_EC_FAN_AUTO; 8631 break; 8632 case 3: 8633 /* reserved for software-controlled auto mode */ 8634 return -ENOSYS; 8635 default: 8636 return -EINVAL; 8637 } 8638 8639 res = fan_set_level_safe(level); 8640 if (res == -ENXIO) 8641 return -EINVAL; 8642 else if (res < 0) 8643 return res; 8644 8645 fan_watchdog_reset(); 8646 8647 return count; 8648 } 8649 8650 static DEVICE_ATTR(pwm1_enable, S_IWUSR | S_IRUGO, 8651 fan_pwm1_enable_show, fan_pwm1_enable_store); 8652 8653 /* sysfs fan pwm1 ------------------------------------------------------ */ 8654 static ssize_t fan_pwm1_show(struct device *dev, 8655 struct device_attribute *attr, 8656 char *buf) 8657 { 8658 int res; 8659 u8 status; 8660 8661 res = fan_get_status_safe(&status); 8662 if (res) 8663 return res; 8664 8665 if ((status & 8666 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) != 0) 8667 status = fan_control_desired_level; 8668 8669 if (status > 7) 8670 status = 7; 8671 8672 return sysfs_emit(buf, "%u\n", (status * 255) / 7); 8673 } 8674 8675 static ssize_t fan_pwm1_store(struct device *dev, 8676 struct device_attribute *attr, 8677 const char *buf, size_t count) 8678 { 8679 unsigned long s; 8680 int rc; 8681 u8 status, newlevel; 8682 8683 if (parse_strtoul(buf, 255, &s)) 8684 return -EINVAL; 8685 8686 tpacpi_disclose_usertask("hwmon pwm1", 8687 "set fan speed to %lu\n", s); 8688 8689 /* scale down from 0-255 to 0-7 */ 8690 newlevel = (s >> 5) & 0x07; 8691 8692 if (mutex_lock_killable(&fan_mutex)) 8693 return -ERESTARTSYS; 8694 8695 rc = fan_get_status(&status); 8696 if (!rc && (status & 8697 (TP_EC_FAN_AUTO | TP_EC_FAN_FULLSPEED)) == 0) { 8698 rc = fan_set_level(newlevel); 8699 if (rc == -ENXIO) 8700 rc = -EINVAL; 8701 else if (!rc) { 8702 fan_update_desired_level(newlevel); 8703 fan_watchdog_reset(); 8704 } 8705 } 8706 8707 mutex_unlock(&fan_mutex); 8708 return (rc) ? rc : count; 8709 } 8710 8711 static DEVICE_ATTR(pwm1, S_IWUSR | S_IRUGO, fan_pwm1_show, fan_pwm1_store); 8712 8713 /* sysfs fan fan1_input ------------------------------------------------ */ 8714 static ssize_t fan_fan1_input_show(struct device *dev, 8715 struct device_attribute *attr, 8716 char *buf) 8717 { 8718 int res; 8719 unsigned int speed; 8720 8721 res = fan_get_speed(&speed); 8722 if (res < 0) 8723 return res; 8724 8725 /* Check for fan speeds displayed in hexadecimal */ 8726 if (!ecfw_with_fan_dec_rpm) 8727 return sysfs_emit(buf, "%u\n", speed); 8728 else 8729 return sysfs_emit(buf, "%x\n", speed); 8730 } 8731 8732 static DEVICE_ATTR(fan1_input, S_IRUGO, fan_fan1_input_show, NULL); 8733 8734 /* sysfs fan fan2_input ------------------------------------------------ */ 8735 static ssize_t fan_fan2_input_show(struct device *dev, 8736 struct device_attribute *attr, 8737 char *buf) 8738 { 8739 int res; 8740 unsigned int speed; 8741 8742 res = fan2_get_speed(&speed); 8743 if (res < 0) 8744 return res; 8745 8746 /* Check for fan speeds displayed in hexadecimal */ 8747 if (!ecfw_with_fan_dec_rpm) 8748 return sysfs_emit(buf, "%u\n", speed); 8749 else 8750 return sysfs_emit(buf, "%x\n", speed); 8751 } 8752 8753 static DEVICE_ATTR(fan2_input, S_IRUGO, fan_fan2_input_show, NULL); 8754 8755 /* sysfs fan fan_watchdog (hwmon driver) ------------------------------- */ 8756 static ssize_t fan_watchdog_show(struct device_driver *drv, char *buf) 8757 { 8758 return sysfs_emit(buf, "%u\n", fan_watchdog_maxinterval); 8759 } 8760 8761 static ssize_t fan_watchdog_store(struct device_driver *drv, const char *buf, 8762 size_t count) 8763 { 8764 unsigned long t; 8765 8766 if (parse_strtoul(buf, 120, &t)) 8767 return -EINVAL; 8768 8769 if (!fan_control_allowed) 8770 return -EPERM; 8771 8772 fan_watchdog_maxinterval = t; 8773 fan_watchdog_reset(); 8774 8775 tpacpi_disclose_usertask("fan_watchdog", "set to %lu\n", t); 8776 8777 return count; 8778 } 8779 static DRIVER_ATTR_RW(fan_watchdog); 8780 8781 /* --------------------------------------------------------------------- */ 8782 8783 static struct attribute *fan_attributes[] = { 8784 &dev_attr_pwm1_enable.attr, 8785 &dev_attr_pwm1.attr, 8786 &dev_attr_fan1_input.attr, 8787 &dev_attr_fan2_input.attr, 8788 NULL 8789 }; 8790 8791 static umode_t fan_attr_is_visible(struct kobject *kobj, struct attribute *attr, 8792 int n) 8793 { 8794 if (fan_status_access_mode == TPACPI_FAN_NONE && 8795 fan_control_access_mode == TPACPI_FAN_WR_NONE) 8796 return 0; 8797 8798 if (attr == &dev_attr_fan2_input.attr) { 8799 if (!tp_features.second_fan) 8800 return 0; 8801 } 8802 8803 return attr->mode; 8804 } 8805 8806 static const struct attribute_group fan_attr_group = { 8807 .is_visible = fan_attr_is_visible, 8808 .attrs = fan_attributes, 8809 }; 8810 8811 static struct attribute *fan_driver_attributes[] = { 8812 &driver_attr_fan_watchdog.attr, 8813 NULL 8814 }; 8815 8816 static const struct attribute_group fan_driver_attr_group = { 8817 .is_visible = fan_attr_is_visible, 8818 .attrs = fan_driver_attributes, 8819 }; 8820 8821 #define TPACPI_FAN_Q1 0x0001 /* Uninitialized HFSP */ 8822 #define TPACPI_FAN_2FAN 0x0002 /* EC 0x31 bit 0 selects fan2 */ 8823 #define TPACPI_FAN_2CTL 0x0004 /* selects fan2 control */ 8824 #define TPACPI_FAN_NOFAN 0x0008 /* no fan available */ 8825 #define TPACPI_FAN_NS 0x0010 /* For EC with non-Standard register addresses */ 8826 #define TPACPI_FAN_DECRPM 0x0020 /* For ECFW's with RPM in register as decimal */ 8827 #define TPACPI_FAN_TPR 0x0040 /* Fan speed is in Ticks Per Revolution */ 8828 #define TPACPI_FAN_NOACPI 0x0080 /* Don't use ACPI methods even if detected */ 8829 8830 static const struct tpacpi_quirk fan_quirk_table[] __initconst = { 8831 TPACPI_QEC_IBM('1', 'Y', TPACPI_FAN_Q1), 8832 TPACPI_QEC_IBM('7', '8', TPACPI_FAN_Q1), 8833 TPACPI_QEC_IBM('7', '6', TPACPI_FAN_Q1), 8834 TPACPI_QEC_IBM('7', '0', TPACPI_FAN_Q1), 8835 TPACPI_QEC_LNV('7', 'M', TPACPI_FAN_2FAN), 8836 TPACPI_Q_LNV('N', '1', TPACPI_FAN_2FAN), 8837 TPACPI_Q_LNV3('N', '1', 'D', TPACPI_FAN_2CTL), /* P70 */ 8838 TPACPI_Q_LNV3('N', '1', 'E', TPACPI_FAN_2CTL), /* P50 */ 8839 TPACPI_Q_LNV3('N', '1', 'T', TPACPI_FAN_2CTL), /* P71 */ 8840 TPACPI_Q_LNV3('N', '1', 'U', TPACPI_FAN_2CTL), /* P51 */ 8841 TPACPI_Q_LNV3('N', '2', 'C', TPACPI_FAN_2CTL), /* P52 / P72 */ 8842 TPACPI_Q_LNV3('N', '2', 'N', TPACPI_FAN_2CTL), /* P53 / P73 */ 8843 TPACPI_Q_LNV3('N', '2', 'E', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (1st gen) */ 8844 TPACPI_Q_LNV3('N', '2', 'O', TPACPI_FAN_2CTL), /* P1 / X1 Extreme (2nd gen) */ 8845 TPACPI_Q_LNV3('N', '3', '0', TPACPI_FAN_2CTL), /* P15 (1st gen) / P15v (1st gen) */ 8846 TPACPI_Q_LNV3('N', '3', '7', TPACPI_FAN_2CTL), /* T15g (2nd gen) */ 8847 TPACPI_Q_LNV3('R', '1', 'F', TPACPI_FAN_NS), /* L13 Yoga Gen 2 */ 8848 TPACPI_Q_LNV3('N', '2', 'U', TPACPI_FAN_NS), /* X13 Yoga Gen 2*/ 8849 TPACPI_Q_LNV3('R', '0', 'R', TPACPI_FAN_NS), /* L380 */ 8850 TPACPI_Q_LNV3('R', '1', '5', TPACPI_FAN_NS), /* L13 Yoga Gen 1 */ 8851 TPACPI_Q_LNV3('R', '1', '0', TPACPI_FAN_NS), /* L390 */ 8852 TPACPI_Q_LNV3('N', '2', 'L', TPACPI_FAN_NS), /* X13 Yoga Gen 1 */ 8853 TPACPI_Q_LNV3('R', '0', 'T', TPACPI_FAN_NS), /* 11e Gen5 GL */ 8854 TPACPI_Q_LNV3('R', '1', 'D', TPACPI_FAN_NS), /* 11e Gen5 GL-R */ 8855 TPACPI_Q_LNV3('R', '0', 'V', TPACPI_FAN_NS), /* 11e Gen5 KL-Y */ 8856 TPACPI_Q_LNV3('N', '1', 'O', TPACPI_FAN_NOFAN), /* X1 Tablet (2nd gen) */ 8857 TPACPI_Q_LNV3('R', '0', 'Q', TPACPI_FAN_DECRPM),/* L480 */ 8858 TPACPI_Q_LNV('8', 'F', TPACPI_FAN_TPR), /* ThinkPad x120e */ 8859 TPACPI_Q_LNV3('R', '0', '0', TPACPI_FAN_NOACPI),/* E560 */ 8860 TPACPI_Q_LNV3('R', '1', '2', TPACPI_FAN_NOACPI),/* T495 */ 8861 TPACPI_Q_LNV3('R', '1', '3', TPACPI_FAN_NOACPI),/* T495s */ 8862 }; 8863 8864 static int __init fan_init(struct ibm_init_struct *iibm) 8865 { 8866 unsigned long quirks; 8867 8868 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 8869 "initializing fan subdriver\n"); 8870 8871 mutex_init(&fan_mutex); 8872 fan_status_access_mode = TPACPI_FAN_NONE; 8873 fan_control_access_mode = TPACPI_FAN_WR_NONE; 8874 fan_control_commands = 0; 8875 fan_watchdog_maxinterval = 0; 8876 tp_features.fan_ctrl_status_undef = 0; 8877 tp_features.second_fan = 0; 8878 tp_features.second_fan_ctl = 0; 8879 fan_control_desired_level = 7; 8880 8881 if (tpacpi_is_ibm()) { 8882 TPACPI_ACPIHANDLE_INIT(fans); 8883 TPACPI_ACPIHANDLE_INIT(gfan); 8884 TPACPI_ACPIHANDLE_INIT(sfan); 8885 } 8886 if (tpacpi_is_lenovo()) { 8887 TPACPI_ACPIHANDLE_INIT(fang); 8888 TPACPI_ACPIHANDLE_INIT(fanw); 8889 } 8890 8891 quirks = tpacpi_check_quirks(fan_quirk_table, 8892 ARRAY_SIZE(fan_quirk_table)); 8893 8894 if (quirks & TPACPI_FAN_NOFAN) { 8895 pr_info("No integrated ThinkPad fan available\n"); 8896 return -ENODEV; 8897 } 8898 8899 if (quirks & TPACPI_FAN_NS) { 8900 pr_info("ECFW with non-standard fan reg control found\n"); 8901 fan_with_ns_addr = 1; 8902 /* Fan ctrl support from host is undefined for now */ 8903 tp_features.fan_ctrl_status_undef = 1; 8904 } 8905 8906 /* Check for the EC/BIOS with RPM reported in decimal*/ 8907 if (quirks & TPACPI_FAN_DECRPM) { 8908 pr_info("ECFW with fan RPM as decimal in EC register\n"); 8909 ecfw_with_fan_dec_rpm = 1; 8910 tp_features.fan_ctrl_status_undef = 1; 8911 } 8912 8913 if (quirks & TPACPI_FAN_NOACPI) { 8914 /* E560, T495, T495s */ 8915 pr_info("Ignoring buggy ACPI fan access method\n"); 8916 fang_handle = NULL; 8917 fanw_handle = NULL; 8918 } 8919 8920 if (gfan_handle) { 8921 /* 570, 600e/x, 770e, 770x */ 8922 fan_status_access_mode = TPACPI_FAN_RD_ACPI_GFAN; 8923 } else if (fang_handle) { 8924 /* E531 */ 8925 fan_status_access_mode = TPACPI_FAN_RD_ACPI_FANG; 8926 } else { 8927 /* all other ThinkPads: note that even old-style 8928 * ThinkPad ECs supports the fan control register */ 8929 if (fan_with_ns_addr || 8930 likely(acpi_ec_read(fan_status_offset, &fan_control_initial_status))) { 8931 int res; 8932 unsigned int speed; 8933 8934 fan_status_access_mode = fan_with_ns_addr ? 8935 TPACPI_FAN_RD_TPEC_NS : TPACPI_FAN_RD_TPEC; 8936 8937 if (quirks & TPACPI_FAN_Q1) 8938 fan_quirk1_setup(); 8939 if (quirks & TPACPI_FAN_TPR) 8940 fan_speed_in_tpr = true; 8941 /* Try and probe the 2nd fan */ 8942 tp_features.second_fan = 1; /* needed for get_speed to work */ 8943 res = fan2_get_speed(&speed); 8944 if (res >= 0 && speed != FAN_NOT_PRESENT) { 8945 /* It responded - so let's assume it's there */ 8946 tp_features.second_fan = 1; 8947 /* fan control not currently available for ns ECFW */ 8948 tp_features.second_fan_ctl = !fan_with_ns_addr; 8949 pr_info("secondary fan control detected & enabled\n"); 8950 } else { 8951 /* Fan not auto-detected */ 8952 tp_features.second_fan = 0; 8953 if (quirks & TPACPI_FAN_2FAN) { 8954 tp_features.second_fan = 1; 8955 pr_info("secondary fan support enabled\n"); 8956 } 8957 if (quirks & TPACPI_FAN_2CTL) { 8958 tp_features.second_fan = 1; 8959 tp_features.second_fan_ctl = 1; 8960 pr_info("secondary fan control enabled\n"); 8961 } 8962 } 8963 } else { 8964 pr_err("ThinkPad ACPI EC access misbehaving, fan status and control unavailable\n"); 8965 return -ENODEV; 8966 } 8967 } 8968 8969 if (sfan_handle) { 8970 /* 570, 770x-JL */ 8971 fan_control_access_mode = TPACPI_FAN_WR_ACPI_SFAN; 8972 fan_control_commands |= 8973 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_ENABLE; 8974 } else if (fanw_handle) { 8975 /* E531 */ 8976 fan_control_access_mode = TPACPI_FAN_WR_ACPI_FANW; 8977 fan_control_commands |= 8978 TPACPI_FAN_CMD_LEVEL | TPACPI_FAN_CMD_SPEED | TPACPI_FAN_CMD_ENABLE; 8979 } else { 8980 if (!gfan_handle) { 8981 /* gfan without sfan means no fan control */ 8982 /* all other models implement TP EC 0x2f control */ 8983 8984 if (fans_handle) { 8985 /* X31, X40, X41 */ 8986 fan_control_access_mode = 8987 TPACPI_FAN_WR_ACPI_FANS; 8988 fan_control_commands |= 8989 TPACPI_FAN_CMD_SPEED | 8990 TPACPI_FAN_CMD_LEVEL | 8991 TPACPI_FAN_CMD_ENABLE; 8992 } else { 8993 fan_control_access_mode = TPACPI_FAN_WR_TPEC; 8994 fan_control_commands |= 8995 TPACPI_FAN_CMD_LEVEL | 8996 TPACPI_FAN_CMD_ENABLE; 8997 } 8998 } 8999 } 9000 9001 vdbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 9002 "fan is %s, modes %d, %d\n", 9003 str_supported(fan_status_access_mode != TPACPI_FAN_NONE || 9004 fan_control_access_mode != TPACPI_FAN_WR_NONE), 9005 fan_status_access_mode, fan_control_access_mode); 9006 9007 /* fan control master switch */ 9008 if (!fan_control_allowed) { 9009 fan_control_access_mode = TPACPI_FAN_WR_NONE; 9010 fan_control_commands = 0; 9011 dbg_printk(TPACPI_DBG_INIT | TPACPI_DBG_FAN, 9012 "fan control features disabled by parameter\n"); 9013 } 9014 9015 /* update fan_control_desired_level */ 9016 if (fan_status_access_mode != TPACPI_FAN_NONE) 9017 fan_get_status_safe(NULL); 9018 9019 if (fan_status_access_mode == TPACPI_FAN_NONE && 9020 fan_control_access_mode == TPACPI_FAN_WR_NONE) 9021 return -ENODEV; 9022 9023 return 0; 9024 } 9025 9026 static void fan_exit(void) 9027 { 9028 vdbg_printk(TPACPI_DBG_EXIT | TPACPI_DBG_FAN, 9029 "cancelling any pending fan watchdog tasks\n"); 9030 9031 cancel_delayed_work(&fan_watchdog_task); 9032 flush_workqueue(tpacpi_wq); 9033 } 9034 9035 static void fan_suspend(void) 9036 { 9037 int rc; 9038 9039 if (!fan_control_allowed) 9040 return; 9041 9042 /* Store fan status in cache */ 9043 fan_control_resume_level = 0; 9044 rc = fan_get_status_safe(&fan_control_resume_level); 9045 if (rc) 9046 pr_notice("failed to read fan level for later restore during resume: %d\n", 9047 rc); 9048 9049 /* if it is undefined, don't attempt to restore it. 9050 * KEEP THIS LAST */ 9051 if (tp_features.fan_ctrl_status_undef) 9052 fan_control_resume_level = 0; 9053 } 9054 9055 static void fan_resume(void) 9056 { 9057 u8 current_level = 7; 9058 bool do_set = false; 9059 int rc; 9060 9061 /* DSDT *always* updates status on resume */ 9062 tp_features.fan_ctrl_status_undef = 0; 9063 9064 if (!fan_control_allowed || 9065 !fan_control_resume_level || 9066 fan_get_status_safe(¤t_level)) 9067 return; 9068 9069 switch (fan_control_access_mode) { 9070 case TPACPI_FAN_WR_ACPI_SFAN: 9071 /* never decrease fan level */ 9072 do_set = (fan_control_resume_level > current_level); 9073 break; 9074 case TPACPI_FAN_WR_ACPI_FANS: 9075 case TPACPI_FAN_WR_TPEC: 9076 /* never decrease fan level, scale is: 9077 * TP_EC_FAN_FULLSPEED > 7 >= TP_EC_FAN_AUTO 9078 * 9079 * We expect the firmware to set either 7 or AUTO, but we 9080 * handle FULLSPEED out of paranoia. 9081 * 9082 * So, we can safely only restore FULLSPEED or 7, anything 9083 * else could slow the fan. Restoring AUTO is useless, at 9084 * best that's exactly what the DSDT already set (it is the 9085 * slower it uses). 9086 * 9087 * Always keep in mind that the DSDT *will* have set the 9088 * fans to what the vendor supposes is the best level. We 9089 * muck with it only to speed the fan up. 9090 */ 9091 if (fan_control_resume_level != 7 && 9092 !(fan_control_resume_level & TP_EC_FAN_FULLSPEED)) 9093 return; 9094 else 9095 do_set = !(current_level & TP_EC_FAN_FULLSPEED) && 9096 (current_level != fan_control_resume_level); 9097 break; 9098 default: 9099 return; 9100 } 9101 if (do_set) { 9102 pr_notice("restoring fan level to 0x%02x\n", 9103 fan_control_resume_level); 9104 rc = fan_set_level_safe(fan_control_resume_level); 9105 if (rc < 0) 9106 pr_notice("failed to restore fan level: %d\n", rc); 9107 } 9108 } 9109 9110 static int fan_read(struct seq_file *m) 9111 { 9112 int rc; 9113 u8 status; 9114 unsigned int speed = 0; 9115 9116 switch (fan_status_access_mode) { 9117 case TPACPI_FAN_RD_ACPI_GFAN: 9118 /* 570, 600e/x, 770e, 770x */ 9119 rc = fan_get_status_safe(&status); 9120 if (rc) 9121 return rc; 9122 9123 seq_printf(m, "status:\t\t%s\n" 9124 "level:\t\t%d\n", 9125 str_enabled_disabled(status), status); 9126 break; 9127 9128 case TPACPI_FAN_RD_TPEC_NS: 9129 case TPACPI_FAN_RD_TPEC: 9130 case TPACPI_FAN_RD_ACPI_FANG: 9131 /* all except 570, 600e/x, 770e, 770x */ 9132 rc = fan_get_status_safe(&status); 9133 if (rc) 9134 return rc; 9135 9136 seq_printf(m, "status:\t\t%s\n", str_enabled_disabled(status)); 9137 9138 rc = fan_get_speed(&speed); 9139 if (rc < 0) 9140 return rc; 9141 9142 /* Check for fan speeds displayed in hexadecimal */ 9143 if (!ecfw_with_fan_dec_rpm) 9144 seq_printf(m, "speed:\t\t%d\n", speed); 9145 else 9146 seq_printf(m, "speed:\t\t%x\n", speed); 9147 9148 if (fan_status_access_mode == TPACPI_FAN_RD_TPEC_NS) { 9149 /* 9150 * No full speed bit in NS EC 9151 * EC Auto mode is set by default. 9152 * No other levels settings available 9153 */ 9154 seq_printf(m, "level:\t\t%s\n", status & FAN_NS_CTRL ? "unknown" : "auto"); 9155 } else if (fan_status_access_mode == TPACPI_FAN_RD_TPEC) { 9156 if (status & TP_EC_FAN_FULLSPEED) 9157 /* Disengaged mode takes precedence */ 9158 seq_printf(m, "level:\t\tdisengaged\n"); 9159 else if (status & TP_EC_FAN_AUTO) 9160 seq_printf(m, "level:\t\tauto\n"); 9161 else 9162 seq_printf(m, "level:\t\t%d\n", status); 9163 } 9164 break; 9165 9166 case TPACPI_FAN_NONE: 9167 default: 9168 seq_printf(m, "status:\t\tnot supported\n"); 9169 } 9170 9171 if (fan_control_commands & TPACPI_FAN_CMD_LEVEL) { 9172 seq_printf(m, "commands:\tlevel <level>"); 9173 9174 switch (fan_control_access_mode) { 9175 case TPACPI_FAN_WR_ACPI_SFAN: 9176 seq_printf(m, " (<level> is 0-7)\n"); 9177 break; 9178 9179 default: 9180 seq_printf(m, " (<level> is 0-7, auto, disengaged, full-speed)\n"); 9181 break; 9182 } 9183 } 9184 9185 if (fan_control_commands & TPACPI_FAN_CMD_ENABLE) 9186 seq_printf(m, "commands:\tenable, disable\n" 9187 "commands:\twatchdog <timeout> (<timeout> is 0 (off), 1-120 (seconds))\n"); 9188 9189 if (fan_control_commands & TPACPI_FAN_CMD_SPEED) 9190 seq_printf(m, "commands:\tspeed <speed> (<speed> is 0-65535)\n"); 9191 9192 return 0; 9193 } 9194 9195 static int fan_write_cmd_level(const char *cmd, int *rc) 9196 { 9197 int level; 9198 9199 if (strstarts(cmd, "level auto")) 9200 level = TP_EC_FAN_AUTO; 9201 else if (strstarts(cmd, "level disengaged") || strstarts(cmd, "level full-speed")) 9202 level = TP_EC_FAN_FULLSPEED; 9203 else if (sscanf(cmd, "level %d", &level) != 1) 9204 return 0; 9205 9206 *rc = fan_set_level_safe(level); 9207 if (*rc == -ENXIO) 9208 pr_err("level command accepted for unsupported access mode %d\n", 9209 fan_control_access_mode); 9210 else if (!*rc) 9211 tpacpi_disclose_usertask("procfs fan", 9212 "set level to %d\n", level); 9213 9214 return 1; 9215 } 9216 9217 static int fan_write_cmd_enable(const char *cmd, int *rc) 9218 { 9219 if (!strstarts(cmd, "enable")) 9220 return 0; 9221 9222 *rc = fan_set_enable(); 9223 if (*rc == -ENXIO) 9224 pr_err("enable command accepted for unsupported access mode %d\n", 9225 fan_control_access_mode); 9226 else if (!*rc) 9227 tpacpi_disclose_usertask("procfs fan", "enable\n"); 9228 9229 return 1; 9230 } 9231 9232 static int fan_write_cmd_disable(const char *cmd, int *rc) 9233 { 9234 if (!strstarts(cmd, "disable")) 9235 return 0; 9236 9237 *rc = fan_set_disable(); 9238 if (*rc == -ENXIO) 9239 pr_err("disable command accepted for unsupported access mode %d\n", 9240 fan_control_access_mode); 9241 else if (!*rc) 9242 tpacpi_disclose_usertask("procfs fan", "disable\n"); 9243 9244 return 1; 9245 } 9246 9247 static int fan_write_cmd_speed(const char *cmd, int *rc) 9248 { 9249 int speed; 9250 9251 /* TODO: 9252 * Support speed <low> <medium> <high> ? */ 9253 9254 if (sscanf(cmd, "speed %d", &speed) != 1) 9255 return 0; 9256 9257 *rc = fan_set_speed(speed); 9258 if (*rc == -ENXIO) 9259 pr_err("speed command accepted for unsupported access mode %d\n", 9260 fan_control_access_mode); 9261 else if (!*rc) 9262 tpacpi_disclose_usertask("procfs fan", 9263 "set speed to %d\n", speed); 9264 9265 return 1; 9266 } 9267 9268 static int fan_write_cmd_watchdog(const char *cmd, int *rc) 9269 { 9270 int interval; 9271 9272 if (sscanf(cmd, "watchdog %d", &interval) != 1) 9273 return 0; 9274 9275 if (interval < 0 || interval > 120) 9276 *rc = -EINVAL; 9277 else { 9278 fan_watchdog_maxinterval = interval; 9279 tpacpi_disclose_usertask("procfs fan", 9280 "set watchdog timer to %d\n", 9281 interval); 9282 } 9283 9284 return 1; 9285 } 9286 9287 static int fan_write(char *buf) 9288 { 9289 char *cmd; 9290 int rc = 0; 9291 9292 while (!rc && (cmd = strsep(&buf, ","))) { 9293 if (!((fan_control_commands & TPACPI_FAN_CMD_LEVEL) && 9294 fan_write_cmd_level(cmd, &rc)) && 9295 !((fan_control_commands & TPACPI_FAN_CMD_ENABLE) && 9296 (fan_write_cmd_enable(cmd, &rc) || 9297 fan_write_cmd_disable(cmd, &rc) || 9298 fan_write_cmd_watchdog(cmd, &rc))) && 9299 !((fan_control_commands & TPACPI_FAN_CMD_SPEED) && 9300 fan_write_cmd_speed(cmd, &rc)) 9301 ) 9302 rc = -EINVAL; 9303 else if (!rc) 9304 fan_watchdog_reset(); 9305 } 9306 9307 return rc; 9308 } 9309 9310 static struct ibm_struct fan_driver_data = { 9311 .name = "fan", 9312 .read = fan_read, 9313 .write = fan_write, 9314 .exit = fan_exit, 9315 .suspend = fan_suspend, 9316 .resume = fan_resume, 9317 }; 9318 9319 /************************************************************************* 9320 * Mute LED subdriver 9321 */ 9322 9323 #define TPACPI_LED_MAX 2 9324 9325 struct tp_led_table { 9326 acpi_string name; 9327 int on_value; 9328 int off_value; 9329 int state; 9330 }; 9331 9332 static struct tp_led_table led_tables[TPACPI_LED_MAX] = { 9333 [LED_AUDIO_MUTE] = { 9334 .name = "SSMS", 9335 .on_value = 1, 9336 .off_value = 0, 9337 }, 9338 [LED_AUDIO_MICMUTE] = { 9339 .name = "MMTS", 9340 .on_value = 2, 9341 .off_value = 0, 9342 }, 9343 }; 9344 9345 static int mute_led_on_off(struct tp_led_table *t, bool state) 9346 { 9347 acpi_handle temp; 9348 int output; 9349 9350 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9351 pr_warn("Thinkpad ACPI has no %s interface.\n", t->name); 9352 return -EIO; 9353 } 9354 9355 if (!acpi_evalf(hkey_handle, &output, t->name, "dd", 9356 state ? t->on_value : t->off_value)) 9357 return -EIO; 9358 9359 t->state = state; 9360 return state; 9361 } 9362 9363 static int tpacpi_led_set(int whichled, bool on) 9364 { 9365 struct tp_led_table *t; 9366 9367 t = &led_tables[whichled]; 9368 if (t->state < 0 || t->state == on) 9369 return t->state; 9370 return mute_led_on_off(t, on); 9371 } 9372 9373 static int tpacpi_led_mute_set(struct led_classdev *led_cdev, 9374 enum led_brightness brightness) 9375 { 9376 return tpacpi_led_set(LED_AUDIO_MUTE, brightness != LED_OFF); 9377 } 9378 9379 static int tpacpi_led_micmute_set(struct led_classdev *led_cdev, 9380 enum led_brightness brightness) 9381 { 9382 return tpacpi_led_set(LED_AUDIO_MICMUTE, brightness != LED_OFF); 9383 } 9384 9385 static struct led_classdev mute_led_cdev[TPACPI_LED_MAX] = { 9386 [LED_AUDIO_MUTE] = { 9387 .name = "platform::mute", 9388 .max_brightness = 1, 9389 .brightness_set_blocking = tpacpi_led_mute_set, 9390 .default_trigger = "audio-mute", 9391 }, 9392 [LED_AUDIO_MICMUTE] = { 9393 .name = "platform::micmute", 9394 .max_brightness = 1, 9395 .brightness_set_blocking = tpacpi_led_micmute_set, 9396 .default_trigger = "audio-micmute", 9397 }, 9398 }; 9399 9400 static int mute_led_init(struct ibm_init_struct *iibm) 9401 { 9402 acpi_handle temp; 9403 int i, err; 9404 9405 for (i = 0; i < TPACPI_LED_MAX; i++) { 9406 struct tp_led_table *t = &led_tables[i]; 9407 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, t->name, &temp))) { 9408 t->state = -ENODEV; 9409 continue; 9410 } 9411 9412 err = led_classdev_register(&tpacpi_pdev->dev, &mute_led_cdev[i]); 9413 if (err < 0) { 9414 while (i--) 9415 led_classdev_unregister(&mute_led_cdev[i]); 9416 return err; 9417 } 9418 } 9419 return 0; 9420 } 9421 9422 static void mute_led_exit(void) 9423 { 9424 int i; 9425 9426 for (i = 0; i < TPACPI_LED_MAX; i++) { 9427 led_classdev_unregister(&mute_led_cdev[i]); 9428 tpacpi_led_set(i, false); 9429 } 9430 } 9431 9432 static void mute_led_resume(void) 9433 { 9434 int i; 9435 9436 for (i = 0; i < TPACPI_LED_MAX; i++) { 9437 struct tp_led_table *t = &led_tables[i]; 9438 if (t->state >= 0) 9439 mute_led_on_off(t, t->state); 9440 } 9441 } 9442 9443 static struct ibm_struct mute_led_driver_data = { 9444 .name = "mute_led", 9445 .exit = mute_led_exit, 9446 .resume = mute_led_resume, 9447 }; 9448 9449 /* 9450 * Battery Wear Control Driver 9451 * Contact: Ognjen Galic <smclt30p@gmail.com> 9452 */ 9453 9454 /* Metadata */ 9455 9456 #define GET_START "BCTG" 9457 #define SET_START "BCCS" 9458 #define GET_STOP "BCSG" 9459 #define SET_STOP "BCSS" 9460 #define GET_DISCHARGE "BDSG" 9461 #define SET_DISCHARGE "BDSS" 9462 #define GET_INHIBIT "BICG" 9463 #define SET_INHIBIT "BICS" 9464 9465 enum { 9466 BAT_ANY = 0, 9467 BAT_PRIMARY = 1, 9468 BAT_SECONDARY = 2 9469 }; 9470 9471 enum { 9472 /* Error condition bit */ 9473 METHOD_ERR = BIT(31), 9474 }; 9475 9476 enum { 9477 /* This is used in the get/set helpers */ 9478 THRESHOLD_START, 9479 THRESHOLD_STOP, 9480 FORCE_DISCHARGE, 9481 INHIBIT_CHARGE, 9482 }; 9483 9484 struct tpacpi_battery_data { 9485 int charge_start; 9486 int start_support; 9487 int charge_stop; 9488 int stop_support; 9489 unsigned int charge_behaviours; 9490 }; 9491 9492 struct tpacpi_battery_driver_data { 9493 struct tpacpi_battery_data batteries[3]; 9494 int individual_addressing; 9495 }; 9496 9497 static struct tpacpi_battery_driver_data battery_info; 9498 9499 /* ACPI helpers/functions/probes */ 9500 9501 /* 9502 * This evaluates a ACPI method call specific to the battery 9503 * ACPI extension. The specifics are that an error is marked 9504 * in the 32rd bit of the response, so we just check that here. 9505 */ 9506 static acpi_status tpacpi_battery_acpi_eval(char *method, int *ret, int param) 9507 { 9508 int response; 9509 9510 if (!acpi_evalf(hkey_handle, &response, method, "dd", param)) { 9511 acpi_handle_err(hkey_handle, "%s: evaluate failed", method); 9512 return AE_ERROR; 9513 } 9514 if (response & METHOD_ERR) { 9515 acpi_handle_err(hkey_handle, 9516 "%s evaluated but flagged as error", method); 9517 return AE_ERROR; 9518 } 9519 *ret = response; 9520 return AE_OK; 9521 } 9522 9523 static int tpacpi_battery_get(int what, int battery, int *ret) 9524 { 9525 switch (what) { 9526 case THRESHOLD_START: 9527 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, ret, battery)) 9528 return -ENODEV; 9529 9530 /* The value is in the low 8 bits of the response */ 9531 *ret = *ret & 0xFF; 9532 return 0; 9533 case THRESHOLD_STOP: 9534 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, ret, battery)) 9535 return -ENODEV; 9536 /* Value is in lower 8 bits */ 9537 *ret = *ret & 0xFF; 9538 /* 9539 * On the stop value, if we return 0 that 9540 * does not make any sense. 0 means Default, which 9541 * means that charging stops at 100%, so we return 9542 * that. 9543 */ 9544 if (*ret == 0) 9545 *ret = 100; 9546 return 0; 9547 case FORCE_DISCHARGE: 9548 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, ret, battery)) 9549 return -ENODEV; 9550 /* The force discharge status is in bit 0 */ 9551 *ret = *ret & 0x01; 9552 return 0; 9553 case INHIBIT_CHARGE: 9554 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, ret, battery)) 9555 return -ENODEV; 9556 /* The inhibit charge status is in bit 0 */ 9557 *ret = *ret & 0x01; 9558 return 0; 9559 default: 9560 pr_crit("wrong parameter: %d", what); 9561 return -EINVAL; 9562 } 9563 } 9564 9565 static int tpacpi_battery_set(int what, int battery, int value) 9566 { 9567 int param, ret; 9568 /* The first 8 bits are the value of the threshold */ 9569 param = value; 9570 /* The battery ID is in bits 8-9, 2 bits */ 9571 param |= battery << 8; 9572 9573 switch (what) { 9574 case THRESHOLD_START: 9575 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_START, &ret, param)) { 9576 pr_err("failed to set charge threshold on battery %d", 9577 battery); 9578 return -ENODEV; 9579 } 9580 return 0; 9581 case THRESHOLD_STOP: 9582 if ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_STOP, &ret, param)) { 9583 pr_err("failed to set stop threshold: %d", battery); 9584 return -ENODEV; 9585 } 9586 return 0; 9587 case FORCE_DISCHARGE: 9588 /* Force discharge is in bit 0, 9589 * break on AC attach is in bit 1 (won't work on some ThinkPads), 9590 * battery ID is in bits 8-9, 2 bits. 9591 */ 9592 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_DISCHARGE, &ret, param))) { 9593 pr_err("failed to set force discharge on %d", battery); 9594 return -ENODEV; 9595 } 9596 return 0; 9597 case INHIBIT_CHARGE: 9598 /* When setting inhibit charge, we set a default value of 9599 * always breaking on AC detach and the effective time is set to 9600 * be permanent. 9601 * The battery ID is in bits 4-5, 2 bits, 9602 * the effective time is in bits 8-23, 2 bytes. 9603 * A time of FFFF indicates forever. 9604 */ 9605 param = value; 9606 param |= battery << 4; 9607 param |= 0xFFFF << 8; 9608 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(SET_INHIBIT, &ret, param))) { 9609 pr_err("failed to set inhibit charge on %d", battery); 9610 return -ENODEV; 9611 } 9612 return 0; 9613 default: 9614 pr_crit("wrong parameter: %d", what); 9615 return -EINVAL; 9616 } 9617 } 9618 9619 static int tpacpi_battery_set_validate(int what, int battery, int value) 9620 { 9621 int ret, v; 9622 9623 ret = tpacpi_battery_set(what, battery, value); 9624 if (ret < 0) 9625 return ret; 9626 9627 ret = tpacpi_battery_get(what, battery, &v); 9628 if (ret < 0) 9629 return ret; 9630 9631 if (v == value) 9632 return 0; 9633 9634 msleep(500); 9635 9636 ret = tpacpi_battery_get(what, battery, &v); 9637 if (ret < 0) 9638 return ret; 9639 9640 if (v == value) 9641 return 0; 9642 9643 return -EIO; 9644 } 9645 9646 static int tpacpi_battery_probe(int battery) 9647 { 9648 int ret = 0; 9649 9650 memset(&battery_info.batteries[battery], 0, 9651 sizeof(battery_info.batteries[battery])); 9652 9653 /* 9654 * 1) Get the current start threshold 9655 * 2) Check for support 9656 * 3) Get the current stop threshold 9657 * 4) Check for support 9658 * 5) Get the current force discharge status 9659 * 6) Check for support 9660 * 7) Get the current inhibit charge status 9661 * 8) Check for support 9662 */ 9663 if (acpi_has_method(hkey_handle, GET_START)) { 9664 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_START, &ret, battery)) { 9665 pr_err("Error probing battery %d\n", battery); 9666 return -ENODEV; 9667 } 9668 /* Individual addressing is in bit 9 */ 9669 if (ret & BIT(9)) 9670 battery_info.individual_addressing = true; 9671 /* Support is marked in bit 8 */ 9672 if (ret & BIT(8)) 9673 battery_info.batteries[battery].start_support = 1; 9674 else 9675 return -ENODEV; 9676 if (tpacpi_battery_get(THRESHOLD_START, battery, 9677 &battery_info.batteries[battery].charge_start)) { 9678 pr_err("Error probing battery %d\n", battery); 9679 return -ENODEV; 9680 } 9681 } 9682 if (acpi_has_method(hkey_handle, GET_STOP)) { 9683 if ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_STOP, &ret, battery)) { 9684 pr_err("Error probing battery stop; %d\n", battery); 9685 return -ENODEV; 9686 } 9687 /* Support is marked in bit 8 */ 9688 if (ret & BIT(8)) 9689 battery_info.batteries[battery].stop_support = 1; 9690 else 9691 return -ENODEV; 9692 if (tpacpi_battery_get(THRESHOLD_STOP, battery, 9693 &battery_info.batteries[battery].charge_stop)) { 9694 pr_err("Error probing battery stop: %d\n", battery); 9695 return -ENODEV; 9696 } 9697 } 9698 if (acpi_has_method(hkey_handle, GET_DISCHARGE)) { 9699 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_DISCHARGE, &ret, battery))) { 9700 pr_err("Error probing battery discharge; %d\n", battery); 9701 return -ENODEV; 9702 } 9703 /* Support is marked in bit 8 */ 9704 if (ret & BIT(8)) 9705 battery_info.batteries[battery].charge_behaviours |= 9706 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE); 9707 } 9708 if (acpi_has_method(hkey_handle, GET_INHIBIT)) { 9709 if (ACPI_FAILURE(tpacpi_battery_acpi_eval(GET_INHIBIT, &ret, battery))) { 9710 pr_err("Error probing battery inhibit charge; %d\n", battery); 9711 return -ENODEV; 9712 } 9713 /* Support is marked in bit 5 */ 9714 if (ret & BIT(5)) 9715 battery_info.batteries[battery].charge_behaviours |= 9716 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE); 9717 } 9718 9719 battery_info.batteries[battery].charge_behaviours |= 9720 BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO); 9721 9722 pr_info("battery %d registered (start %d, stop %d, behaviours: 0x%x)\n", 9723 battery, 9724 battery_info.batteries[battery].charge_start, 9725 battery_info.batteries[battery].charge_stop, 9726 battery_info.batteries[battery].charge_behaviours); 9727 9728 return 0; 9729 } 9730 9731 /* General helper functions */ 9732 9733 static int tpacpi_battery_get_id(const char *battery_name) 9734 { 9735 9736 if (strcmp(battery_name, "BAT0") == 0 || 9737 tp_features.battery_force_primary) 9738 return BAT_PRIMARY; 9739 if (strcmp(battery_name, "BAT1") == 0) 9740 return BAT_SECONDARY; 9741 /* 9742 * If for some reason the battery is not BAT0 nor is it 9743 * BAT1, we will assume it's the default, first battery, 9744 * AKA primary. 9745 */ 9746 pr_warn("unknown battery %s, assuming primary", battery_name); 9747 return BAT_PRIMARY; 9748 } 9749 9750 /* sysfs interface */ 9751 9752 static ssize_t tpacpi_battery_store(int what, 9753 struct device *dev, 9754 const char *buf, size_t count) 9755 { 9756 struct power_supply *supply = to_power_supply(dev); 9757 unsigned long value; 9758 int battery, rval; 9759 /* 9760 * Some systems have support for more than 9761 * one battery. If that is the case, 9762 * tpacpi_battery_probe marked that addressing 9763 * them individually is supported, so we do that 9764 * based on the device struct. 9765 * 9766 * On systems that are not supported, we assume 9767 * the primary as most of the ACPI calls fail 9768 * with "Any Battery" as the parameter. 9769 */ 9770 if (battery_info.individual_addressing) 9771 /* BAT_PRIMARY or BAT_SECONDARY */ 9772 battery = tpacpi_battery_get_id(supply->desc->name); 9773 else 9774 battery = BAT_PRIMARY; 9775 9776 rval = kstrtoul(buf, 10, &value); 9777 if (rval) 9778 return rval; 9779 9780 switch (what) { 9781 case THRESHOLD_START: 9782 if (!battery_info.batteries[battery].start_support) 9783 return -ENODEV; 9784 /* valid values are [0, 99] */ 9785 if (value > 99) 9786 return -EINVAL; 9787 if (value > battery_info.batteries[battery].charge_stop) 9788 return -EINVAL; 9789 if (tpacpi_battery_set(THRESHOLD_START, battery, value)) 9790 return -ENODEV; 9791 battery_info.batteries[battery].charge_start = value; 9792 return count; 9793 9794 case THRESHOLD_STOP: 9795 if (!battery_info.batteries[battery].stop_support) 9796 return -ENODEV; 9797 /* valid values are [1, 100] */ 9798 if (value < 1 || value > 100) 9799 return -EINVAL; 9800 if (value < battery_info.batteries[battery].charge_start) 9801 return -EINVAL; 9802 battery_info.batteries[battery].charge_stop = value; 9803 /* 9804 * When 100 is passed to stop, we need to flip 9805 * it to 0 as that the EC understands that as 9806 * "Default", which will charge to 100% 9807 */ 9808 if (value == 100) 9809 value = 0; 9810 if (tpacpi_battery_set(THRESHOLD_STOP, battery, value)) 9811 return -EINVAL; 9812 return count; 9813 default: 9814 pr_crit("Wrong parameter: %d", what); 9815 return -EINVAL; 9816 } 9817 return count; 9818 } 9819 9820 static ssize_t tpacpi_battery_show(int what, 9821 struct device *dev, 9822 char *buf) 9823 { 9824 struct power_supply *supply = to_power_supply(dev); 9825 int ret, battery; 9826 /* 9827 * Some systems have support for more than 9828 * one battery. If that is the case, 9829 * tpacpi_battery_probe marked that addressing 9830 * them individually is supported, so we; 9831 * based on the device struct. 9832 * 9833 * On systems that are not supported, we assume 9834 * the primary as most of the ACPI calls fail 9835 * with "Any Battery" as the parameter. 9836 */ 9837 if (battery_info.individual_addressing) 9838 /* BAT_PRIMARY or BAT_SECONDARY */ 9839 battery = tpacpi_battery_get_id(supply->desc->name); 9840 else 9841 battery = BAT_PRIMARY; 9842 if (tpacpi_battery_get(what, battery, &ret)) 9843 return -ENODEV; 9844 return sysfs_emit(buf, "%d\n", ret); 9845 } 9846 9847 static ssize_t charge_control_start_threshold_show(struct device *device, 9848 struct device_attribute *attr, 9849 char *buf) 9850 { 9851 return tpacpi_battery_show(THRESHOLD_START, device, buf); 9852 } 9853 9854 static ssize_t charge_control_end_threshold_show(struct device *device, 9855 struct device_attribute *attr, 9856 char *buf) 9857 { 9858 return tpacpi_battery_show(THRESHOLD_STOP, device, buf); 9859 } 9860 9861 static ssize_t charge_behaviour_show(struct device *dev, 9862 struct device_attribute *attr, 9863 char *buf) 9864 { 9865 enum power_supply_charge_behaviour active = POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO; 9866 struct power_supply *supply = to_power_supply(dev); 9867 unsigned int available; 9868 int ret, battery; 9869 9870 battery = tpacpi_battery_get_id(supply->desc->name); 9871 available = battery_info.batteries[battery].charge_behaviours; 9872 9873 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) { 9874 if (tpacpi_battery_get(FORCE_DISCHARGE, battery, &ret)) 9875 return -ENODEV; 9876 if (ret) { 9877 active = POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE; 9878 goto out; 9879 } 9880 } 9881 9882 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) { 9883 if (tpacpi_battery_get(INHIBIT_CHARGE, battery, &ret)) 9884 return -ENODEV; 9885 if (ret) { 9886 active = POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE; 9887 goto out; 9888 } 9889 } 9890 9891 out: 9892 return power_supply_charge_behaviour_show(dev, available, active, buf); 9893 } 9894 9895 static ssize_t charge_control_start_threshold_store(struct device *dev, 9896 struct device_attribute *attr, 9897 const char *buf, size_t count) 9898 { 9899 return tpacpi_battery_store(THRESHOLD_START, dev, buf, count); 9900 } 9901 9902 static ssize_t charge_control_end_threshold_store(struct device *dev, 9903 struct device_attribute *attr, 9904 const char *buf, size_t count) 9905 { 9906 return tpacpi_battery_store(THRESHOLD_STOP, dev, buf, count); 9907 } 9908 9909 static ssize_t charge_behaviour_store(struct device *dev, 9910 struct device_attribute *attr, 9911 const char *buf, size_t count) 9912 { 9913 struct power_supply *supply = to_power_supply(dev); 9914 int selected, battery, ret = 0; 9915 unsigned int available; 9916 9917 battery = tpacpi_battery_get_id(supply->desc->name); 9918 available = battery_info.batteries[battery].charge_behaviours; 9919 selected = power_supply_charge_behaviour_parse(available, buf); 9920 9921 if (selected < 0) 9922 return selected; 9923 9924 switch (selected) { 9925 case POWER_SUPPLY_CHARGE_BEHAVIOUR_AUTO: 9926 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) 9927 ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0); 9928 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) 9929 ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0)); 9930 if (ret < 0) 9931 return ret; 9932 break; 9933 case POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE: 9934 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE)) 9935 ret = tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 0); 9936 ret = min(ret, tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 1)); 9937 if (ret < 0) 9938 return ret; 9939 break; 9940 case POWER_SUPPLY_CHARGE_BEHAVIOUR_INHIBIT_CHARGE: 9941 if (available & BIT(POWER_SUPPLY_CHARGE_BEHAVIOUR_FORCE_DISCHARGE)) 9942 ret = tpacpi_battery_set_validate(FORCE_DISCHARGE, battery, 0); 9943 ret = min(ret, tpacpi_battery_set_validate(INHIBIT_CHARGE, battery, 1)); 9944 if (ret < 0) 9945 return ret; 9946 break; 9947 default: 9948 dev_err(dev, "Unexpected charge behaviour: %d\n", selected); 9949 return -EINVAL; 9950 } 9951 9952 return count; 9953 } 9954 9955 static DEVICE_ATTR_RW(charge_control_start_threshold); 9956 static DEVICE_ATTR_RW(charge_control_end_threshold); 9957 static DEVICE_ATTR_RW(charge_behaviour); 9958 static struct device_attribute dev_attr_charge_start_threshold = __ATTR( 9959 charge_start_threshold, 9960 0644, 9961 charge_control_start_threshold_show, 9962 charge_control_start_threshold_store 9963 ); 9964 static struct device_attribute dev_attr_charge_stop_threshold = __ATTR( 9965 charge_stop_threshold, 9966 0644, 9967 charge_control_end_threshold_show, 9968 charge_control_end_threshold_store 9969 ); 9970 9971 static struct attribute *tpacpi_battery_attrs[] = { 9972 &dev_attr_charge_control_start_threshold.attr, 9973 &dev_attr_charge_control_end_threshold.attr, 9974 &dev_attr_charge_start_threshold.attr, 9975 &dev_attr_charge_stop_threshold.attr, 9976 &dev_attr_charge_behaviour.attr, 9977 NULL, 9978 }; 9979 9980 ATTRIBUTE_GROUPS(tpacpi_battery); 9981 9982 /* ACPI battery hooking */ 9983 9984 static int tpacpi_battery_add(struct power_supply *battery, struct acpi_battery_hook *hook) 9985 { 9986 int batteryid = tpacpi_battery_get_id(battery->desc->name); 9987 9988 if (tpacpi_battery_probe(batteryid)) 9989 return -ENODEV; 9990 if (device_add_groups(&battery->dev, tpacpi_battery_groups)) 9991 return -ENODEV; 9992 return 0; 9993 } 9994 9995 static int tpacpi_battery_remove(struct power_supply *battery, struct acpi_battery_hook *hook) 9996 { 9997 device_remove_groups(&battery->dev, tpacpi_battery_groups); 9998 return 0; 9999 } 10000 10001 static struct acpi_battery_hook battery_hook = { 10002 .add_battery = tpacpi_battery_add, 10003 .remove_battery = tpacpi_battery_remove, 10004 .name = "ThinkPad Battery Extension", 10005 }; 10006 10007 /* Subdriver init/exit */ 10008 10009 static const struct tpacpi_quirk battery_quirk_table[] __initconst = { 10010 /* 10011 * Individual addressing is broken on models that expose the 10012 * primary battery as BAT1. 10013 */ 10014 TPACPI_Q_LNV('G', '8', true), /* ThinkPad X131e */ 10015 TPACPI_Q_LNV('8', 'F', true), /* Thinkpad X120e */ 10016 TPACPI_Q_LNV('J', '7', true), /* B5400 */ 10017 TPACPI_Q_LNV('J', 'I', true), /* Thinkpad 11e */ 10018 TPACPI_Q_LNV3('R', '0', 'B', true), /* Thinkpad 11e gen 3 */ 10019 TPACPI_Q_LNV3('R', '0', 'C', true), /* Thinkpad 13 */ 10020 TPACPI_Q_LNV3('R', '0', 'J', true), /* Thinkpad 13 gen 2 */ 10021 TPACPI_Q_LNV3('R', '0', 'K', true), /* Thinkpad 11e gen 4 celeron BIOS */ 10022 }; 10023 10024 static int __init tpacpi_battery_init(struct ibm_init_struct *ibm) 10025 { 10026 memset(&battery_info, 0, sizeof(battery_info)); 10027 10028 tp_features.battery_force_primary = tpacpi_check_quirks( 10029 battery_quirk_table, 10030 ARRAY_SIZE(battery_quirk_table)); 10031 10032 battery_hook_register(&battery_hook); 10033 return 0; 10034 } 10035 10036 static void tpacpi_battery_exit(void) 10037 { 10038 battery_hook_unregister(&battery_hook); 10039 } 10040 10041 static struct ibm_struct battery_driver_data = { 10042 .name = "battery", 10043 .exit = tpacpi_battery_exit, 10044 }; 10045 10046 /************************************************************************* 10047 * LCD Shadow subdriver, for the Lenovo PrivacyGuard feature 10048 */ 10049 10050 static struct drm_privacy_screen *lcdshadow_dev; 10051 static acpi_handle lcdshadow_get_handle; 10052 static acpi_handle lcdshadow_set_handle; 10053 10054 static int lcdshadow_set_sw_state(struct drm_privacy_screen *priv, 10055 enum drm_privacy_screen_status state) 10056 { 10057 int output; 10058 10059 if (WARN_ON(!mutex_is_locked(&priv->lock))) 10060 return -EIO; 10061 10062 if (!acpi_evalf(lcdshadow_set_handle, &output, NULL, "dd", (int)state)) 10063 return -EIO; 10064 10065 priv->hw_state = priv->sw_state = state; 10066 return 0; 10067 } 10068 10069 static void lcdshadow_get_hw_state(struct drm_privacy_screen *priv) 10070 { 10071 int output; 10072 10073 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0)) 10074 return; 10075 10076 priv->hw_state = priv->sw_state = output & 0x1; 10077 } 10078 10079 static const struct drm_privacy_screen_ops lcdshadow_ops = { 10080 .set_sw_state = lcdshadow_set_sw_state, 10081 .get_hw_state = lcdshadow_get_hw_state, 10082 }; 10083 10084 static int tpacpi_lcdshadow_init(struct ibm_init_struct *iibm) 10085 { 10086 acpi_status status1, status2; 10087 int output; 10088 10089 status1 = acpi_get_handle(hkey_handle, "GSSS", &lcdshadow_get_handle); 10090 status2 = acpi_get_handle(hkey_handle, "SSSS", &lcdshadow_set_handle); 10091 if (ACPI_FAILURE(status1) || ACPI_FAILURE(status2)) 10092 return 0; 10093 10094 if (!acpi_evalf(lcdshadow_get_handle, &output, NULL, "dd", 0)) 10095 return -EIO; 10096 10097 if (!(output & 0x10000)) 10098 return 0; 10099 10100 lcdshadow_dev = drm_privacy_screen_register(&tpacpi_pdev->dev, 10101 &lcdshadow_ops, NULL); 10102 if (IS_ERR(lcdshadow_dev)) 10103 return PTR_ERR(lcdshadow_dev); 10104 10105 return 0; 10106 } 10107 10108 static void lcdshadow_exit(void) 10109 { 10110 drm_privacy_screen_unregister(lcdshadow_dev); 10111 } 10112 10113 static void lcdshadow_resume(void) 10114 { 10115 if (!lcdshadow_dev) 10116 return; 10117 10118 mutex_lock(&lcdshadow_dev->lock); 10119 lcdshadow_set_sw_state(lcdshadow_dev, lcdshadow_dev->sw_state); 10120 mutex_unlock(&lcdshadow_dev->lock); 10121 } 10122 10123 static int lcdshadow_read(struct seq_file *m) 10124 { 10125 if (!lcdshadow_dev) { 10126 seq_puts(m, "status:\t\tnot supported\n"); 10127 } else { 10128 seq_printf(m, "status:\t\t%d\n", lcdshadow_dev->hw_state); 10129 seq_puts(m, "commands:\t0, 1\n"); 10130 } 10131 10132 return 0; 10133 } 10134 10135 static int lcdshadow_write(char *buf) 10136 { 10137 char *cmd; 10138 int res, state = -EINVAL; 10139 10140 if (!lcdshadow_dev) 10141 return -ENODEV; 10142 10143 while ((cmd = strsep(&buf, ","))) { 10144 res = kstrtoint(cmd, 10, &state); 10145 if (res < 0) 10146 return res; 10147 } 10148 10149 if (state >= 2 || state < 0) 10150 return -EINVAL; 10151 10152 mutex_lock(&lcdshadow_dev->lock); 10153 res = lcdshadow_set_sw_state(lcdshadow_dev, state); 10154 mutex_unlock(&lcdshadow_dev->lock); 10155 10156 drm_privacy_screen_call_notifier_chain(lcdshadow_dev); 10157 10158 return res; 10159 } 10160 10161 static struct ibm_struct lcdshadow_driver_data = { 10162 .name = "lcdshadow", 10163 .exit = lcdshadow_exit, 10164 .resume = lcdshadow_resume, 10165 .read = lcdshadow_read, 10166 .write = lcdshadow_write, 10167 }; 10168 10169 /************************************************************************* 10170 * Thinkpad sensor interfaces 10171 */ 10172 10173 #define DYTC_CMD_QUERY 0 /* To get DYTC status - enable/revision */ 10174 #define DYTC_QUERY_ENABLE_BIT 8 /* Bit 8 - 0 = disabled, 1 = enabled */ 10175 #define DYTC_QUERY_SUBREV_BIT 16 /* Bits 16 - 27 - sub revision */ 10176 #define DYTC_QUERY_REV_BIT 28 /* Bits 28 - 31 - revision */ 10177 10178 #define DYTC_CMD_GET 2 /* To get current IC function and mode */ 10179 #define DYTC_GET_LAPMODE_BIT 17 /* Set when in lapmode */ 10180 10181 #define PALMSENSOR_PRESENT_BIT 0 /* Determine if psensor present */ 10182 #define PALMSENSOR_ON_BIT 1 /* psensor status */ 10183 10184 static bool has_palmsensor; 10185 static bool has_lapsensor; 10186 static bool palm_state; 10187 static bool lap_state; 10188 static int dytc_version; 10189 10190 static int dytc_command(int command, int *output) 10191 { 10192 acpi_handle dytc_handle; 10193 10194 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DYTC", &dytc_handle))) { 10195 /* Platform doesn't support DYTC */ 10196 return -ENODEV; 10197 } 10198 if (!acpi_evalf(dytc_handle, output, NULL, "dd", command)) 10199 return -EIO; 10200 return 0; 10201 } 10202 10203 static int lapsensor_get(bool *present, bool *state) 10204 { 10205 int output, err; 10206 10207 *present = false; 10208 err = dytc_command(DYTC_CMD_GET, &output); 10209 if (err) 10210 return err; 10211 10212 *present = true; /*If we get his far, we have lapmode support*/ 10213 *state = output & BIT(DYTC_GET_LAPMODE_BIT) ? true : false; 10214 return 0; 10215 } 10216 10217 static int palmsensor_get(bool *present, bool *state) 10218 { 10219 acpi_handle psensor_handle; 10220 int output; 10221 10222 *present = false; 10223 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GPSS", &psensor_handle))) 10224 return -ENODEV; 10225 if (!acpi_evalf(psensor_handle, &output, NULL, "d")) 10226 return -EIO; 10227 10228 *present = output & BIT(PALMSENSOR_PRESENT_BIT) ? true : false; 10229 *state = output & BIT(PALMSENSOR_ON_BIT) ? true : false; 10230 return 0; 10231 } 10232 10233 static void lapsensor_refresh(void) 10234 { 10235 bool state; 10236 int err; 10237 10238 if (has_lapsensor) { 10239 err = lapsensor_get(&has_lapsensor, &state); 10240 if (err) 10241 return; 10242 if (lap_state != state) { 10243 lap_state = state; 10244 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "dytc_lapmode"); 10245 } 10246 } 10247 } 10248 10249 static void palmsensor_refresh(void) 10250 { 10251 bool state; 10252 int err; 10253 10254 if (has_palmsensor) { 10255 err = palmsensor_get(&has_palmsensor, &state); 10256 if (err) 10257 return; 10258 if (palm_state != state) { 10259 palm_state = state; 10260 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "palmsensor"); 10261 } 10262 } 10263 } 10264 10265 static ssize_t dytc_lapmode_show(struct device *dev, 10266 struct device_attribute *attr, 10267 char *buf) 10268 { 10269 if (has_lapsensor) 10270 return sysfs_emit(buf, "%d\n", lap_state); 10271 return sysfs_emit(buf, "\n"); 10272 } 10273 static DEVICE_ATTR_RO(dytc_lapmode); 10274 10275 static ssize_t palmsensor_show(struct device *dev, 10276 struct device_attribute *attr, 10277 char *buf) 10278 { 10279 if (has_palmsensor) 10280 return sysfs_emit(buf, "%d\n", palm_state); 10281 return sysfs_emit(buf, "\n"); 10282 } 10283 static DEVICE_ATTR_RO(palmsensor); 10284 10285 static struct attribute *proxsensor_attributes[] = { 10286 &dev_attr_dytc_lapmode.attr, 10287 &dev_attr_palmsensor.attr, 10288 NULL 10289 }; 10290 10291 static umode_t proxsensor_attr_is_visible(struct kobject *kobj, 10292 struct attribute *attr, int n) 10293 { 10294 if (attr == &dev_attr_dytc_lapmode.attr) { 10295 /* 10296 * Platforms before DYTC version 5 claim to have a lap sensor, 10297 * but it doesn't work, so we ignore them. 10298 */ 10299 if (!has_lapsensor || dytc_version < 5) 10300 return 0; 10301 } else if (attr == &dev_attr_palmsensor.attr) { 10302 if (!has_palmsensor) 10303 return 0; 10304 } 10305 10306 return attr->mode; 10307 } 10308 10309 static const struct attribute_group proxsensor_attr_group = { 10310 .is_visible = proxsensor_attr_is_visible, 10311 .attrs = proxsensor_attributes, 10312 }; 10313 10314 static int tpacpi_proxsensor_init(struct ibm_init_struct *iibm) 10315 { 10316 int palm_err, lap_err; 10317 10318 palm_err = palmsensor_get(&has_palmsensor, &palm_state); 10319 lap_err = lapsensor_get(&has_lapsensor, &lap_state); 10320 /* If support isn't available for both devices return -ENODEV */ 10321 if ((palm_err == -ENODEV) && (lap_err == -ENODEV)) 10322 return -ENODEV; 10323 /* Otherwise, if there was an error return it */ 10324 if (palm_err && (palm_err != -ENODEV)) 10325 return palm_err; 10326 if (lap_err && (lap_err != -ENODEV)) 10327 return lap_err; 10328 10329 return 0; 10330 } 10331 10332 static struct ibm_struct proxsensor_driver_data = { 10333 .name = "proximity-sensor", 10334 }; 10335 10336 /************************************************************************* 10337 * DYTC Platform Profile interface 10338 */ 10339 10340 #define DYTC_CMD_SET 1 /* To enable/disable IC function mode */ 10341 #define DYTC_CMD_MMC_GET 8 /* To get current MMC function and mode */ 10342 #define DYTC_CMD_RESET 0x1ff /* To reset back to default */ 10343 10344 #define DYTC_CMD_FUNC_CAP 3 /* To get DYTC capabilities */ 10345 #define DYTC_FC_MMC 27 /* MMC Mode supported */ 10346 #define DYTC_FC_PSC 29 /* PSC Mode supported */ 10347 #define DYTC_FC_AMT 31 /* AMT mode supported */ 10348 10349 #define DYTC_GET_FUNCTION_BIT 8 /* Bits 8-11 - function setting */ 10350 #define DYTC_GET_MODE_BIT 12 /* Bits 12-15 - mode setting */ 10351 10352 #define DYTC_SET_FUNCTION_BIT 12 /* Bits 12-15 - function setting */ 10353 #define DYTC_SET_MODE_BIT 16 /* Bits 16-19 - mode setting */ 10354 #define DYTC_SET_VALID_BIT 20 /* Bit 20 - 1 = on, 0 = off */ 10355 10356 #define DYTC_FUNCTION_STD 0 /* Function = 0, standard mode */ 10357 #define DYTC_FUNCTION_CQL 1 /* Function = 1, lap mode */ 10358 #define DYTC_FUNCTION_MMC 11 /* Function = 11, MMC mode */ 10359 #define DYTC_FUNCTION_PSC 13 /* Function = 13, PSC mode */ 10360 #define DYTC_FUNCTION_AMT 15 /* Function = 15, AMT mode */ 10361 10362 #define DYTC_MODE_AMT_ENABLE 0x1 /* Enable AMT (in balanced mode) */ 10363 #define DYTC_MODE_AMT_DISABLE 0xF /* Disable AMT (in other modes) */ 10364 10365 #define DYTC_MODE_MMC_PERFORM 2 /* High power mode aka performance */ 10366 #define DYTC_MODE_MMC_LOWPOWER 3 /* Low power mode */ 10367 #define DYTC_MODE_MMC_BALANCE 0xF /* Default mode aka balanced */ 10368 #define DYTC_MODE_MMC_DEFAULT 0 /* Default mode from MMC_GET, aka balanced */ 10369 10370 #define DYTC_MODE_PSC_LOWPOWER 3 /* Low power mode */ 10371 #define DYTC_MODE_PSC_BALANCE 5 /* Default mode aka balanced */ 10372 #define DYTC_MODE_PSC_PERFORM 7 /* High power mode aka performance */ 10373 10374 #define DYTC_MODE_PSCV9_LOWPOWER 1 /* Low power mode */ 10375 #define DYTC_MODE_PSCV9_BALANCE 3 /* Default mode aka balanced */ 10376 #define DYTC_MODE_PSCV9_PERFORM 4 /* High power mode aka performance */ 10377 10378 #define DYTC_ERR_MASK 0xF /* Bits 0-3 in cmd result are the error result */ 10379 #define DYTC_ERR_SUCCESS 1 /* CMD completed successful */ 10380 10381 #define DYTC_SET_COMMAND(function, mode, on) \ 10382 (DYTC_CMD_SET | (function) << DYTC_SET_FUNCTION_BIT | \ 10383 (mode) << DYTC_SET_MODE_BIT | \ 10384 (on) << DYTC_SET_VALID_BIT) 10385 10386 #define DYTC_DISABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 0) 10387 #define DYTC_ENABLE_CQL DYTC_SET_COMMAND(DYTC_FUNCTION_CQL, DYTC_MODE_MMC_BALANCE, 1) 10388 static int dytc_control_amt(bool enable); 10389 static bool dytc_amt_active; 10390 10391 static enum platform_profile_option dytc_current_profile; 10392 static atomic_t dytc_ignore_event = ATOMIC_INIT(0); 10393 static DEFINE_MUTEX(dytc_mutex); 10394 static int dytc_capabilities; 10395 static bool dytc_mmc_get_available; 10396 static int profile_force; 10397 10398 static int platform_psc_profile_lowpower = DYTC_MODE_PSC_LOWPOWER; 10399 static int platform_psc_profile_balanced = DYTC_MODE_PSC_BALANCE; 10400 static int platform_psc_profile_performance = DYTC_MODE_PSC_PERFORM; 10401 10402 static int convert_dytc_to_profile(int funcmode, int dytcmode, 10403 enum platform_profile_option *profile) 10404 { 10405 switch (funcmode) { 10406 case DYTC_FUNCTION_MMC: 10407 switch (dytcmode) { 10408 case DYTC_MODE_MMC_LOWPOWER: 10409 *profile = PLATFORM_PROFILE_LOW_POWER; 10410 break; 10411 case DYTC_MODE_MMC_DEFAULT: 10412 case DYTC_MODE_MMC_BALANCE: 10413 *profile = PLATFORM_PROFILE_BALANCED; 10414 break; 10415 case DYTC_MODE_MMC_PERFORM: 10416 *profile = PLATFORM_PROFILE_PERFORMANCE; 10417 break; 10418 default: /* Unknown mode */ 10419 return -EINVAL; 10420 } 10421 return 0; 10422 case DYTC_FUNCTION_PSC: 10423 if (dytcmode == platform_psc_profile_lowpower) 10424 *profile = PLATFORM_PROFILE_LOW_POWER; 10425 else if (dytcmode == platform_psc_profile_balanced) 10426 *profile = PLATFORM_PROFILE_BALANCED; 10427 else if (dytcmode == platform_psc_profile_performance) 10428 *profile = PLATFORM_PROFILE_PERFORMANCE; 10429 else 10430 return -EINVAL; 10431 10432 return 0; 10433 case DYTC_FUNCTION_AMT: 10434 /* For now return balanced. It's the closest we have to 'auto' */ 10435 *profile = PLATFORM_PROFILE_BALANCED; 10436 return 0; 10437 default: 10438 /* Unknown function */ 10439 pr_debug("unknown function 0x%x\n", funcmode); 10440 return -EOPNOTSUPP; 10441 } 10442 return 0; 10443 } 10444 10445 static int convert_profile_to_dytc(enum platform_profile_option profile, int *perfmode) 10446 { 10447 switch (profile) { 10448 case PLATFORM_PROFILE_LOW_POWER: 10449 if (dytc_capabilities & BIT(DYTC_FC_MMC)) 10450 *perfmode = DYTC_MODE_MMC_LOWPOWER; 10451 else if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10452 *perfmode = platform_psc_profile_lowpower; 10453 break; 10454 case PLATFORM_PROFILE_BALANCED: 10455 if (dytc_capabilities & BIT(DYTC_FC_MMC)) 10456 *perfmode = DYTC_MODE_MMC_BALANCE; 10457 else if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10458 *perfmode = platform_psc_profile_balanced; 10459 break; 10460 case PLATFORM_PROFILE_PERFORMANCE: 10461 if (dytc_capabilities & BIT(DYTC_FC_MMC)) 10462 *perfmode = DYTC_MODE_MMC_PERFORM; 10463 else if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10464 *perfmode = platform_psc_profile_performance; 10465 break; 10466 default: /* Unknown profile */ 10467 return -EOPNOTSUPP; 10468 } 10469 return 0; 10470 } 10471 10472 /* 10473 * dytc_profile_get: Function to register with platform_profile 10474 * handler. Returns current platform profile. 10475 */ 10476 static int dytc_profile_get(struct device *dev, 10477 enum platform_profile_option *profile) 10478 { 10479 *profile = dytc_current_profile; 10480 return 0; 10481 } 10482 10483 static int dytc_control_amt(bool enable) 10484 { 10485 int dummy; 10486 int err; 10487 int cmd; 10488 10489 if (!(dytc_capabilities & BIT(DYTC_FC_AMT))) { 10490 pr_warn("Attempting to toggle AMT on a system that doesn't advertise support\n"); 10491 return -ENODEV; 10492 } 10493 10494 if (enable) 10495 cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_ENABLE, enable); 10496 else 10497 cmd = DYTC_SET_COMMAND(DYTC_FUNCTION_AMT, DYTC_MODE_AMT_DISABLE, enable); 10498 10499 pr_debug("%sabling AMT (cmd 0x%x)", enable ? "en":"dis", cmd); 10500 err = dytc_command(cmd, &dummy); 10501 if (err) 10502 return err; 10503 dytc_amt_active = enable; 10504 return 0; 10505 } 10506 10507 /* 10508 * Helper function - check if we are in CQL mode and if we are 10509 * - disable CQL, 10510 * - run the command 10511 * - enable CQL 10512 * If not in CQL mode, just run the command 10513 */ 10514 static int dytc_cql_command(int command, int *output) 10515 { 10516 int err, cmd_err, dummy; 10517 int cur_funcmode; 10518 10519 /* Determine if we are in CQL mode. This alters the commands we do */ 10520 err = dytc_command(DYTC_CMD_GET, output); 10521 if (err) 10522 return err; 10523 10524 cur_funcmode = (*output >> DYTC_GET_FUNCTION_BIT) & 0xF; 10525 /* Check if we're OK to return immediately */ 10526 if ((command == DYTC_CMD_GET) && (cur_funcmode != DYTC_FUNCTION_CQL)) 10527 return 0; 10528 10529 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10530 atomic_inc(&dytc_ignore_event); 10531 err = dytc_command(DYTC_DISABLE_CQL, &dummy); 10532 if (err) 10533 return err; 10534 } 10535 10536 cmd_err = dytc_command(command, output); 10537 /* Check return condition after we've restored CQL state */ 10538 10539 if (cur_funcmode == DYTC_FUNCTION_CQL) { 10540 err = dytc_command(DYTC_ENABLE_CQL, &dummy); 10541 if (err) 10542 return err; 10543 } 10544 return cmd_err; 10545 } 10546 10547 /* 10548 * dytc_profile_set: Function to register with platform_profile 10549 * handler. Sets current platform profile. 10550 */ 10551 static int dytc_profile_set(struct device *dev, 10552 enum platform_profile_option profile) 10553 { 10554 int perfmode; 10555 int output; 10556 int err; 10557 10558 err = mutex_lock_interruptible(&dytc_mutex); 10559 if (err) 10560 return err; 10561 10562 err = convert_profile_to_dytc(profile, &perfmode); 10563 if (err) 10564 goto unlock; 10565 10566 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { 10567 if (profile == PLATFORM_PROFILE_BALANCED) { 10568 /* 10569 * To get back to balanced mode we need to issue a reset command. 10570 * Note we still need to disable CQL mode before hand and re-enable 10571 * it afterwards, otherwise dytc_lapmode gets reset to 0 and stays 10572 * stuck at 0 for aprox. 30 minutes. 10573 */ 10574 err = dytc_cql_command(DYTC_CMD_RESET, &output); 10575 if (err) 10576 goto unlock; 10577 } else { 10578 /* Determine if we are in CQL mode. This alters the commands we do */ 10579 err = dytc_cql_command(DYTC_SET_COMMAND(DYTC_FUNCTION_MMC, perfmode, 1), 10580 &output); 10581 if (err) 10582 goto unlock; 10583 } 10584 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { 10585 err = dytc_command(DYTC_SET_COMMAND(DYTC_FUNCTION_PSC, perfmode, 1), &output); 10586 if (err) 10587 goto unlock; 10588 10589 /* system supports AMT, activate it when on balanced */ 10590 if (dytc_capabilities & BIT(DYTC_FC_AMT)) 10591 dytc_control_amt(profile == PLATFORM_PROFILE_BALANCED); 10592 } 10593 /* Success - update current profile */ 10594 dytc_current_profile = profile; 10595 unlock: 10596 mutex_unlock(&dytc_mutex); 10597 return err; 10598 } 10599 10600 static int dytc_profile_probe(void *drvdata, unsigned long *choices) 10601 { 10602 set_bit(PLATFORM_PROFILE_LOW_POWER, choices); 10603 set_bit(PLATFORM_PROFILE_BALANCED, choices); 10604 set_bit(PLATFORM_PROFILE_PERFORMANCE, choices); 10605 10606 return 0; 10607 } 10608 10609 static const struct platform_profile_ops dytc_profile_ops = { 10610 .probe = dytc_profile_probe, 10611 .profile_get = dytc_profile_get, 10612 .profile_set = dytc_profile_set, 10613 }; 10614 10615 static void dytc_profile_refresh(void) 10616 { 10617 enum platform_profile_option profile; 10618 int output = 0, err = 0; 10619 int perfmode, funcmode = 0; 10620 10621 mutex_lock(&dytc_mutex); 10622 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { 10623 if (dytc_mmc_get_available) 10624 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10625 else 10626 err = dytc_cql_command(DYTC_CMD_GET, &output); 10627 funcmode = DYTC_FUNCTION_MMC; 10628 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { 10629 err = dytc_command(DYTC_CMD_GET, &output); 10630 /* Check if we are PSC mode, or have AMT enabled */ 10631 funcmode = (output >> DYTC_GET_FUNCTION_BIT) & 0xF; 10632 } else { /* Unknown profile mode */ 10633 err = -ENODEV; 10634 } 10635 mutex_unlock(&dytc_mutex); 10636 if (err) 10637 return; 10638 10639 perfmode = (output >> DYTC_GET_MODE_BIT) & 0xF; 10640 err = convert_dytc_to_profile(funcmode, perfmode, &profile); 10641 if (!err && profile != dytc_current_profile) { 10642 dytc_current_profile = profile; 10643 platform_profile_notify(tpacpi_pprof); 10644 } 10645 } 10646 10647 static int tpacpi_dytc_profile_init(struct ibm_init_struct *iibm) 10648 { 10649 int err, output; 10650 10651 err = dytc_command(DYTC_CMD_QUERY, &output); 10652 if (err) 10653 return err; 10654 10655 if (output & BIT(DYTC_QUERY_ENABLE_BIT)) 10656 dytc_version = (output >> DYTC_QUERY_REV_BIT) & 0xF; 10657 10658 dbg_printk(TPACPI_DBG_INIT, "DYTC version %d\n", dytc_version); 10659 /* Check DYTC is enabled and supports mode setting */ 10660 if (dytc_version < 5) 10661 return -ENODEV; 10662 10663 /* Check what capabilities are supported */ 10664 err = dytc_command(DYTC_CMD_FUNC_CAP, &dytc_capabilities); 10665 if (err) 10666 return err; 10667 10668 /* Check if user wants to override the profile selection */ 10669 if (profile_force) { 10670 switch (profile_force) { 10671 case -1: 10672 dytc_capabilities = 0; 10673 break; 10674 case 1: 10675 dytc_capabilities = BIT(DYTC_FC_MMC); 10676 break; 10677 case 2: 10678 dytc_capabilities = BIT(DYTC_FC_PSC); 10679 break; 10680 } 10681 pr_debug("Profile selection forced: 0x%x\n", dytc_capabilities); 10682 } 10683 if (dytc_capabilities & BIT(DYTC_FC_MMC)) { /* MMC MODE */ 10684 pr_debug("MMC is supported\n"); 10685 /* 10686 * Check if MMC_GET functionality available 10687 * Version > 6 and return success from MMC_GET command 10688 */ 10689 dytc_mmc_get_available = false; 10690 if (dytc_version >= 6) { 10691 err = dytc_command(DYTC_CMD_MMC_GET, &output); 10692 if (!err && ((output & DYTC_ERR_MASK) == DYTC_ERR_SUCCESS)) 10693 dytc_mmc_get_available = true; 10694 } 10695 } else if (dytc_capabilities & BIT(DYTC_FC_PSC)) { /* PSC MODE */ 10696 pr_debug("PSC is supported\n"); 10697 if (dytc_version >= 9) { /* update profiles for DYTC 9 and up */ 10698 platform_psc_profile_lowpower = DYTC_MODE_PSCV9_LOWPOWER; 10699 platform_psc_profile_balanced = DYTC_MODE_PSCV9_BALANCE; 10700 platform_psc_profile_performance = DYTC_MODE_PSCV9_PERFORM; 10701 } 10702 } else { 10703 dbg_printk(TPACPI_DBG_INIT, "No DYTC support available\n"); 10704 return -ENODEV; 10705 } 10706 10707 dbg_printk(TPACPI_DBG_INIT, 10708 "DYTC version %d: thermal mode available\n", dytc_version); 10709 10710 /* Create platform_profile structure and register */ 10711 tpacpi_pprof = platform_profile_register(&tpacpi_pdev->dev, "thinkpad-acpi-profile", 10712 NULL, &dytc_profile_ops); 10713 /* 10714 * If for some reason platform_profiles aren't enabled 10715 * don't quit terminally. 10716 */ 10717 if (IS_ERR(tpacpi_pprof)) 10718 return -ENODEV; 10719 10720 /* Ensure initial values are correct */ 10721 dytc_profile_refresh(); 10722 10723 /* Workaround for https://bugzilla.kernel.org/show_bug.cgi?id=216347 */ 10724 if (dytc_capabilities & BIT(DYTC_FC_PSC)) 10725 dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED); 10726 10727 return 0; 10728 } 10729 10730 static void dytc_profile_exit(void) 10731 { 10732 if (!IS_ERR_OR_NULL(tpacpi_pprof)) 10733 platform_profile_remove(tpacpi_pprof); 10734 } 10735 10736 static struct ibm_struct dytc_profile_driver_data = { 10737 .name = "dytc-profile", 10738 .exit = dytc_profile_exit, 10739 }; 10740 10741 /************************************************************************* 10742 * Keyboard language interface 10743 */ 10744 10745 struct keyboard_lang_data { 10746 const char *lang_str; 10747 int lang_code; 10748 }; 10749 10750 static const struct keyboard_lang_data keyboard_lang_data[] = { 10751 {"be", 0x080c}, 10752 {"cz", 0x0405}, 10753 {"da", 0x0406}, 10754 {"de", 0x0c07}, 10755 {"en", 0x0000}, 10756 {"es", 0x2c0a}, 10757 {"et", 0x0425}, 10758 {"fr", 0x040c}, 10759 {"fr-ch", 0x100c}, 10760 {"hu", 0x040e}, 10761 {"it", 0x0410}, 10762 {"jp", 0x0411}, 10763 {"nl", 0x0413}, 10764 {"nn", 0x0414}, 10765 {"pl", 0x0415}, 10766 {"pt", 0x0816}, 10767 {"sl", 0x041b}, 10768 {"sv", 0x081d}, 10769 {"tr", 0x041f}, 10770 }; 10771 10772 static int set_keyboard_lang_command(int command) 10773 { 10774 acpi_handle sskl_handle; 10775 int output; 10776 10777 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "SSKL", &sskl_handle))) { 10778 /* Platform doesn't support SSKL */ 10779 return -ENODEV; 10780 } 10781 10782 if (!acpi_evalf(sskl_handle, &output, NULL, "dd", command)) 10783 return -EIO; 10784 10785 return 0; 10786 } 10787 10788 static int get_keyboard_lang(int *output) 10789 { 10790 acpi_handle gskl_handle; 10791 int kbd_lang; 10792 10793 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "GSKL", &gskl_handle))) { 10794 /* Platform doesn't support GSKL */ 10795 return -ENODEV; 10796 } 10797 10798 if (!acpi_evalf(gskl_handle, &kbd_lang, NULL, "dd", 0x02000000)) 10799 return -EIO; 10800 10801 /* 10802 * METHOD_ERR gets returned on devices where there are no special (e.g. '=', 10803 * '(' and ')') keys which use layout dependent key-press emulation. 10804 */ 10805 if (kbd_lang & METHOD_ERR) 10806 return -ENODEV; 10807 10808 *output = kbd_lang; 10809 10810 return 0; 10811 } 10812 10813 /* sysfs keyboard language entry */ 10814 static ssize_t keyboard_lang_show(struct device *dev, 10815 struct device_attribute *attr, 10816 char *buf) 10817 { 10818 int output, err, i, len = 0; 10819 10820 err = get_keyboard_lang(&output); 10821 if (err) 10822 return err; 10823 10824 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10825 if (i) 10826 len += sysfs_emit_at(buf, len, "%s", " "); 10827 10828 if (output == keyboard_lang_data[i].lang_code) { 10829 len += sysfs_emit_at(buf, len, "[%s]", keyboard_lang_data[i].lang_str); 10830 } else { 10831 len += sysfs_emit_at(buf, len, "%s", keyboard_lang_data[i].lang_str); 10832 } 10833 } 10834 len += sysfs_emit_at(buf, len, "\n"); 10835 10836 return len; 10837 } 10838 10839 static ssize_t keyboard_lang_store(struct device *dev, 10840 struct device_attribute *attr, 10841 const char *buf, size_t count) 10842 { 10843 int err, i; 10844 bool lang_found = false; 10845 int lang_code = 0; 10846 10847 for (i = 0; i < ARRAY_SIZE(keyboard_lang_data); i++) { 10848 if (sysfs_streq(buf, keyboard_lang_data[i].lang_str)) { 10849 lang_code = keyboard_lang_data[i].lang_code; 10850 lang_found = true; 10851 break; 10852 } 10853 } 10854 10855 if (lang_found) { 10856 lang_code = lang_code | 1 << 24; 10857 10858 /* Set language code */ 10859 err = set_keyboard_lang_command(lang_code); 10860 if (err) 10861 return err; 10862 } else { 10863 dev_err(&tpacpi_pdev->dev, "Unknown Keyboard language. Ignoring\n"); 10864 return -EINVAL; 10865 } 10866 10867 tpacpi_disclose_usertask(attr->attr.name, 10868 "keyboard language is set to %s\n", buf); 10869 10870 sysfs_notify(&tpacpi_pdev->dev.kobj, NULL, "keyboard_lang"); 10871 10872 return count; 10873 } 10874 static DEVICE_ATTR_RW(keyboard_lang); 10875 10876 static struct attribute *kbdlang_attributes[] = { 10877 &dev_attr_keyboard_lang.attr, 10878 NULL 10879 }; 10880 10881 static umode_t kbdlang_attr_is_visible(struct kobject *kobj, 10882 struct attribute *attr, int n) 10883 { 10884 return tp_features.kbd_lang ? attr->mode : 0; 10885 } 10886 10887 static const struct attribute_group kbdlang_attr_group = { 10888 .is_visible = kbdlang_attr_is_visible, 10889 .attrs = kbdlang_attributes, 10890 }; 10891 10892 static int tpacpi_kbdlang_init(struct ibm_init_struct *iibm) 10893 { 10894 int err, output; 10895 10896 err = get_keyboard_lang(&output); 10897 tp_features.kbd_lang = !err; 10898 return err; 10899 } 10900 10901 static struct ibm_struct kbdlang_driver_data = { 10902 .name = "kbdlang", 10903 }; 10904 10905 /************************************************************************* 10906 * DPRC(Dynamic Power Reduction Control) subdriver, for the Lenovo WWAN 10907 * and WLAN feature. 10908 */ 10909 #define DPRC_GET_WWAN_ANTENNA_TYPE 0x40000 10910 #define DPRC_WWAN_ANTENNA_TYPE_A_BIT BIT(4) 10911 #define DPRC_WWAN_ANTENNA_TYPE_B_BIT BIT(8) 10912 static bool has_antennatype; 10913 static int wwan_antennatype; 10914 10915 static int dprc_command(int command, int *output) 10916 { 10917 acpi_handle dprc_handle; 10918 10919 if (ACPI_FAILURE(acpi_get_handle(hkey_handle, "DPRC", &dprc_handle))) { 10920 /* Platform doesn't support DPRC */ 10921 return -ENODEV; 10922 } 10923 10924 if (!acpi_evalf(dprc_handle, output, NULL, "dd", command)) 10925 return -EIO; 10926 10927 /* 10928 * METHOD_ERR gets returned on devices where few commands are not supported 10929 * for example command to get WWAN Antenna type command is not supported on 10930 * some devices. 10931 */ 10932 if (*output & METHOD_ERR) 10933 return -ENODEV; 10934 10935 return 0; 10936 } 10937 10938 static int get_wwan_antenna(int *wwan_antennatype) 10939 { 10940 int output, err; 10941 10942 /* Get current Antenna type */ 10943 err = dprc_command(DPRC_GET_WWAN_ANTENNA_TYPE, &output); 10944 if (err) 10945 return err; 10946 10947 if (output & DPRC_WWAN_ANTENNA_TYPE_A_BIT) 10948 *wwan_antennatype = 1; 10949 else if (output & DPRC_WWAN_ANTENNA_TYPE_B_BIT) 10950 *wwan_antennatype = 2; 10951 else 10952 return -ENODEV; 10953 10954 return 0; 10955 } 10956 10957 /* sysfs wwan antenna type entry */ 10958 static ssize_t wwan_antenna_type_show(struct device *dev, 10959 struct device_attribute *attr, 10960 char *buf) 10961 { 10962 switch (wwan_antennatype) { 10963 case 1: 10964 return sysfs_emit(buf, "type a\n"); 10965 case 2: 10966 return sysfs_emit(buf, "type b\n"); 10967 default: 10968 return -ENODATA; 10969 } 10970 } 10971 static DEVICE_ATTR_RO(wwan_antenna_type); 10972 10973 static struct attribute *dprc_attributes[] = { 10974 &dev_attr_wwan_antenna_type.attr, 10975 NULL 10976 }; 10977 10978 static umode_t dprc_attr_is_visible(struct kobject *kobj, 10979 struct attribute *attr, int n) 10980 { 10981 return has_antennatype ? attr->mode : 0; 10982 } 10983 10984 static const struct attribute_group dprc_attr_group = { 10985 .is_visible = dprc_attr_is_visible, 10986 .attrs = dprc_attributes, 10987 }; 10988 10989 static int tpacpi_dprc_init(struct ibm_init_struct *iibm) 10990 { 10991 int err; 10992 10993 err = get_wwan_antenna(&wwan_antennatype); 10994 if (err) 10995 return err; 10996 10997 has_antennatype = true; 10998 return 0; 10999 } 11000 11001 static struct ibm_struct dprc_driver_data = { 11002 .name = "dprc", 11003 }; 11004 11005 /* 11006 * Auxmac 11007 * 11008 * This auxiliary mac address is enabled in the bios through the 11009 * MAC Address Pass-through feature. In most cases, there are three 11010 * possibilities: Internal Mac, Second Mac, and disabled. 11011 * 11012 */ 11013 11014 #define AUXMAC_LEN 12 11015 #define AUXMAC_START 9 11016 #define AUXMAC_STRLEN 22 11017 #define AUXMAC_BEGIN_MARKER 8 11018 #define AUXMAC_END_MARKER 21 11019 11020 static char auxmac[AUXMAC_LEN + 1]; 11021 11022 static int auxmac_init(struct ibm_init_struct *iibm) 11023 { 11024 acpi_status status; 11025 struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; 11026 union acpi_object *obj; 11027 11028 status = acpi_evaluate_object(NULL, "\\MACA", NULL, &buffer); 11029 11030 if (ACPI_FAILURE(status)) 11031 return -ENODEV; 11032 11033 obj = buffer.pointer; 11034 11035 if (obj->type != ACPI_TYPE_STRING || obj->string.length != AUXMAC_STRLEN) { 11036 pr_info("Invalid buffer for MAC address pass-through.\n"); 11037 goto auxmacinvalid; 11038 } 11039 11040 if (obj->string.pointer[AUXMAC_BEGIN_MARKER] != '#' || 11041 obj->string.pointer[AUXMAC_END_MARKER] != '#') { 11042 pr_info("Invalid header for MAC address pass-through.\n"); 11043 goto auxmacinvalid; 11044 } 11045 11046 if (strncmp(obj->string.pointer + AUXMAC_START, "XXXXXXXXXXXX", AUXMAC_LEN) != 0) 11047 strscpy(auxmac, obj->string.pointer + AUXMAC_START, sizeof(auxmac)); 11048 else 11049 strscpy(auxmac, "disabled", sizeof(auxmac)); 11050 11051 free: 11052 kfree(obj); 11053 return 0; 11054 11055 auxmacinvalid: 11056 strscpy(auxmac, "unavailable", sizeof(auxmac)); 11057 goto free; 11058 } 11059 11060 static struct ibm_struct auxmac_data = { 11061 .name = "auxmac", 11062 }; 11063 11064 static DEVICE_STRING_ATTR_RO(auxmac, 0444, auxmac); 11065 11066 static umode_t auxmac_attr_is_visible(struct kobject *kobj, 11067 struct attribute *attr, int n) 11068 { 11069 return auxmac[0] == 0 ? 0 : attr->mode; 11070 } 11071 11072 static struct attribute *auxmac_attributes[] = { 11073 &dev_attr_auxmac.attr.attr, 11074 NULL 11075 }; 11076 11077 static const struct attribute_group auxmac_attr_group = { 11078 .is_visible = auxmac_attr_is_visible, 11079 .attrs = auxmac_attributes, 11080 }; 11081 11082 /* --------------------------------------------------------------------- */ 11083 11084 static struct attribute *tpacpi_driver_attributes[] = { 11085 &driver_attr_debug_level.attr, 11086 &driver_attr_version.attr, 11087 &driver_attr_interface_version.attr, 11088 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11089 &driver_attr_wlsw_emulstate.attr, 11090 &driver_attr_bluetooth_emulstate.attr, 11091 &driver_attr_wwan_emulstate.attr, 11092 &driver_attr_uwb_emulstate.attr, 11093 #endif 11094 NULL 11095 }; 11096 11097 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11098 static umode_t tpacpi_attr_is_visible(struct kobject *kobj, 11099 struct attribute *attr, int n) 11100 { 11101 if (attr == &driver_attr_wlsw_emulstate.attr) { 11102 if (!dbg_wlswemul) 11103 return 0; 11104 } else if (attr == &driver_attr_bluetooth_emulstate.attr) { 11105 if (!dbg_bluetoothemul) 11106 return 0; 11107 } else if (attr == &driver_attr_wwan_emulstate.attr) { 11108 if (!dbg_wwanemul) 11109 return 0; 11110 } else if (attr == &driver_attr_uwb_emulstate.attr) { 11111 if (!dbg_uwbemul) 11112 return 0; 11113 } 11114 11115 return attr->mode; 11116 } 11117 #endif 11118 11119 static const struct attribute_group tpacpi_driver_attr_group = { 11120 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11121 .is_visible = tpacpi_attr_is_visible, 11122 #endif 11123 .attrs = tpacpi_driver_attributes, 11124 }; 11125 11126 static const struct attribute_group *tpacpi_driver_groups[] = { 11127 &tpacpi_driver_attr_group, 11128 NULL, 11129 }; 11130 11131 static const struct attribute_group *tpacpi_groups[] = { 11132 &adaptive_kbd_attr_group, 11133 &hotkey_attr_group, 11134 &bluetooth_attr_group, 11135 &wan_attr_group, 11136 &cmos_attr_group, 11137 &proxsensor_attr_group, 11138 &kbdlang_attr_group, 11139 &dprc_attr_group, 11140 &auxmac_attr_group, 11141 NULL, 11142 }; 11143 11144 static const struct attribute_group *tpacpi_hwmon_groups[] = { 11145 &thermal_attr_group, 11146 &temp_label_attr_group, 11147 &fan_attr_group, 11148 NULL, 11149 }; 11150 11151 static const struct attribute_group *tpacpi_hwmon_driver_groups[] = { 11152 &fan_driver_attr_group, 11153 NULL, 11154 }; 11155 11156 /**************************************************************************** 11157 **************************************************************************** 11158 * 11159 * Platform drivers 11160 * 11161 **************************************************************************** 11162 ****************************************************************************/ 11163 11164 static struct platform_driver tpacpi_pdriver = { 11165 .driver = { 11166 .name = TPACPI_DRVR_NAME, 11167 .pm = &tpacpi_pm, 11168 .groups = tpacpi_driver_groups, 11169 .dev_groups = tpacpi_groups, 11170 }, 11171 .shutdown = tpacpi_shutdown_handler, 11172 }; 11173 11174 static struct platform_driver tpacpi_hwmon_pdriver = { 11175 .driver = { 11176 .name = TPACPI_HWMON_DRVR_NAME, 11177 .groups = tpacpi_hwmon_driver_groups, 11178 }, 11179 }; 11180 11181 /**************************************************************************** 11182 **************************************************************************** 11183 * 11184 * Infrastructure 11185 * 11186 **************************************************************************** 11187 ****************************************************************************/ 11188 11189 /* 11190 * HKEY event callout for other subdrivers go here 11191 * (yes, it is ugly, but it is quick, safe, and gets the job done 11192 */ 11193 static bool tpacpi_driver_event(const unsigned int hkey_event) 11194 { 11195 int camera_shutter_state; 11196 11197 switch (hkey_event) { 11198 case TP_HKEY_EV_BRGHT_UP: 11199 case TP_HKEY_EV_BRGHT_DOWN: 11200 if (ibm_backlight_device) 11201 tpacpi_brightness_notify_change(); 11202 /* 11203 * Key press events are suppressed by default hotkey_user_mask 11204 * and should still be reported if explicitly requested. 11205 */ 11206 return false; 11207 case TP_HKEY_EV_VOL_UP: 11208 case TP_HKEY_EV_VOL_DOWN: 11209 case TP_HKEY_EV_VOL_MUTE: 11210 if (alsa_card) 11211 volume_alsa_notify_change(); 11212 11213 /* Key events are suppressed by default hotkey_user_mask */ 11214 return false; 11215 case TP_HKEY_EV_KBD_LIGHT: 11216 if (tp_features.kbdlight) { 11217 enum led_brightness brightness; 11218 11219 mutex_lock(&kbdlight_mutex); 11220 11221 /* 11222 * Check the brightness actually changed, setting the brightness 11223 * through kbdlight_set_level() also triggers this event. 11224 */ 11225 brightness = kbdlight_sysfs_get(NULL); 11226 if (kbdlight_brightness != brightness) { 11227 kbdlight_brightness = brightness; 11228 led_classdev_notify_brightness_hw_changed( 11229 &tpacpi_led_kbdlight.led_classdev, brightness); 11230 } 11231 11232 mutex_unlock(&kbdlight_mutex); 11233 } 11234 /* Key events are suppressed by default hotkey_user_mask */ 11235 return false; 11236 case TP_HKEY_EV_DFR_CHANGE_ROW: 11237 adaptive_keyboard_change_row(); 11238 return true; 11239 case TP_HKEY_EV_DFR_S_QUICKVIEW_ROW: 11240 adaptive_keyboard_s_quickview_row(); 11241 return true; 11242 case TP_HKEY_EV_THM_CSM_COMPLETED: 11243 lapsensor_refresh(); 11244 /* If we are already accessing DYTC then skip dytc update */ 11245 if (!atomic_add_unless(&dytc_ignore_event, -1, 0)) 11246 dytc_profile_refresh(); 11247 11248 return true; 11249 case TP_HKEY_EV_PRIVACYGUARD_TOGGLE: 11250 if (lcdshadow_dev) { 11251 enum drm_privacy_screen_status old_hw_state; 11252 bool changed; 11253 11254 mutex_lock(&lcdshadow_dev->lock); 11255 old_hw_state = lcdshadow_dev->hw_state; 11256 lcdshadow_get_hw_state(lcdshadow_dev); 11257 changed = lcdshadow_dev->hw_state != old_hw_state; 11258 mutex_unlock(&lcdshadow_dev->lock); 11259 11260 if (changed) 11261 drm_privacy_screen_call_notifier_chain(lcdshadow_dev); 11262 } 11263 return true; 11264 case TP_HKEY_EV_AMT_TOGGLE: 11265 /* If we're enabling AMT we need to force balanced mode */ 11266 if (!dytc_amt_active) 11267 /* This will also set AMT mode enabled */ 11268 dytc_profile_set(NULL, PLATFORM_PROFILE_BALANCED); 11269 else 11270 dytc_control_amt(!dytc_amt_active); 11271 11272 return true; 11273 case TP_HKEY_EV_CAMERASHUTTER_TOGGLE: 11274 camera_shutter_state = get_camera_shutter(); 11275 if (camera_shutter_state < 0) { 11276 pr_err("Error retrieving camera shutter state after shutter event\n"); 11277 return true; 11278 } 11279 mutex_lock(&tpacpi_inputdev_send_mutex); 11280 11281 input_report_switch(tpacpi_inputdev, SW_CAMERA_LENS_COVER, camera_shutter_state); 11282 input_sync(tpacpi_inputdev); 11283 11284 mutex_unlock(&tpacpi_inputdev_send_mutex); 11285 return true; 11286 case TP_HKEY_EV_DOUBLETAP_TOGGLE: 11287 tp_features.trackpoint_doubletap = !tp_features.trackpoint_doubletap; 11288 return true; 11289 case TP_HKEY_EV_PROFILE_TOGGLE: 11290 case TP_HKEY_EV_PROFILE_TOGGLE2: 11291 platform_profile_cycle(); 11292 return true; 11293 } 11294 11295 return false; 11296 } 11297 11298 /* --------------------------------------------------------------------- */ 11299 11300 /* /proc support */ 11301 static struct proc_dir_entry *proc_dir; 11302 11303 /* 11304 * Module and infrastructure proble, init and exit handling 11305 */ 11306 11307 static bool force_load; 11308 11309 #ifdef CONFIG_THINKPAD_ACPI_DEBUG 11310 static const char * __init str_supported(int is_supported) 11311 { 11312 static char text_unsupported[] __initdata = "not supported"; 11313 11314 return (is_supported) ? &text_unsupported[4] : &text_unsupported[0]; 11315 } 11316 #endif /* CONFIG_THINKPAD_ACPI_DEBUG */ 11317 11318 static void ibm_exit(struct ibm_struct *ibm) 11319 { 11320 dbg_printk(TPACPI_DBG_EXIT, "removing %s\n", ibm->name); 11321 11322 list_del_init(&ibm->all_drivers); 11323 11324 if (ibm->flags.acpi_notify_installed) { 11325 dbg_printk(TPACPI_DBG_EXIT, 11326 "%s: acpi_remove_notify_handler\n", ibm->name); 11327 BUG_ON(!ibm->acpi); 11328 acpi_remove_notify_handler(*ibm->acpi->handle, 11329 ibm->acpi->type, 11330 dispatch_acpi_notify); 11331 ibm->flags.acpi_notify_installed = 0; 11332 } 11333 11334 if (ibm->flags.proc_created) { 11335 dbg_printk(TPACPI_DBG_EXIT, 11336 "%s: remove_proc_entry\n", ibm->name); 11337 remove_proc_entry(ibm->name, proc_dir); 11338 ibm->flags.proc_created = 0; 11339 } 11340 11341 if (ibm->flags.acpi_driver_registered) { 11342 dbg_printk(TPACPI_DBG_EXIT, 11343 "%s: acpi_bus_unregister_driver\n", ibm->name); 11344 BUG_ON(!ibm->acpi); 11345 acpi_bus_unregister_driver(ibm->acpi->driver); 11346 kfree(ibm->acpi->driver); 11347 ibm->acpi->driver = NULL; 11348 ibm->flags.acpi_driver_registered = 0; 11349 } 11350 11351 if (ibm->flags.init_called && ibm->exit) { 11352 ibm->exit(); 11353 ibm->flags.init_called = 0; 11354 } 11355 11356 dbg_printk(TPACPI_DBG_INIT, "finished removing %s\n", ibm->name); 11357 } 11358 11359 static int __init ibm_init(struct ibm_init_struct *iibm) 11360 { 11361 int ret; 11362 struct ibm_struct *ibm = iibm->data; 11363 struct proc_dir_entry *entry; 11364 11365 BUG_ON(ibm == NULL); 11366 11367 INIT_LIST_HEAD(&ibm->all_drivers); 11368 11369 if (ibm->flags.experimental && !experimental) 11370 return 0; 11371 11372 dbg_printk(TPACPI_DBG_INIT, 11373 "probing for %s\n", ibm->name); 11374 11375 if (iibm->init) { 11376 ret = iibm->init(iibm); 11377 if (ret > 0 || ret == -ENODEV) 11378 return 0; /* subdriver functionality not available */ 11379 if (ret) 11380 return ret; 11381 11382 ibm->flags.init_called = 1; 11383 } 11384 11385 if (ibm->acpi) { 11386 if (ibm->acpi->hid) { 11387 ret = register_tpacpi_subdriver(ibm); 11388 if (ret) 11389 goto err_out; 11390 } 11391 11392 if (ibm->acpi->notify) { 11393 ret = setup_acpi_notify(ibm); 11394 if (ret == -ENODEV) { 11395 pr_notice("disabling subdriver %s\n", 11396 ibm->name); 11397 ret = 0; 11398 goto err_out; 11399 } 11400 if (ret < 0) 11401 goto err_out; 11402 } 11403 } 11404 11405 dbg_printk(TPACPI_DBG_INIT, 11406 "%s installed\n", ibm->name); 11407 11408 if (ibm->read) { 11409 umode_t mode = iibm->base_procfs_mode; 11410 11411 if (!mode) 11412 mode = S_IRUGO; 11413 if (ibm->write) 11414 mode |= S_IWUSR; 11415 entry = proc_create_data(ibm->name, mode, proc_dir, 11416 &dispatch_proc_ops, ibm); 11417 if (!entry) { 11418 pr_err("unable to create proc entry %s\n", ibm->name); 11419 ret = -ENODEV; 11420 goto err_out; 11421 } 11422 ibm->flags.proc_created = 1; 11423 } 11424 11425 list_add_tail(&ibm->all_drivers, &tpacpi_all_drivers); 11426 11427 return 0; 11428 11429 err_out: 11430 dbg_printk(TPACPI_DBG_INIT, 11431 "%s: at error exit path with result %d\n", 11432 ibm->name, ret); 11433 11434 ibm_exit(ibm); 11435 return (ret < 0) ? ret : 0; 11436 } 11437 11438 /* Probing */ 11439 11440 static char __init tpacpi_parse_fw_id(const char * const s, 11441 u32 *model, u16 *release) 11442 { 11443 int i; 11444 11445 if (!s || strlen(s) < 8) 11446 goto invalid; 11447 11448 for (i = 0; i < 8; i++) 11449 if (!((s[i] >= '0' && s[i] <= '9') || 11450 (s[i] >= 'A' && s[i] <= 'Z'))) 11451 goto invalid; 11452 11453 /* 11454 * Most models: xxyTkkWW (#.##c) 11455 * Ancient 570/600 and -SL lacks (#.##c) 11456 */ 11457 if (s[3] == 'T' || s[3] == 'N') { 11458 *model = TPID(s[0], s[1]); 11459 *release = TPVER(s[4], s[5]); 11460 return s[2]; 11461 11462 /* New models: xxxyTkkW (#.##c); T550 and some others */ 11463 } else if (s[4] == 'T' || s[4] == 'N') { 11464 *model = TPID3(s[0], s[1], s[2]); 11465 *release = TPVER(s[5], s[6]); 11466 return s[3]; 11467 } 11468 11469 invalid: 11470 return '\0'; 11471 } 11472 11473 #define EC_FW_STRING_LEN 18 11474 11475 static void find_new_ec_fwstr(const struct dmi_header *dm, void *private) 11476 { 11477 char *ec_fw_string = (char *) private; 11478 const char *dmi_data = (const char *)dm; 11479 /* 11480 * ThinkPad Embedded Controller Program Table on newer models 11481 * 11482 * Offset | Name | Width | Description 11483 * ---------------------------------------------------- 11484 * 0x00 | Type | BYTE | 0x8C 11485 * 0x01 | Length | BYTE | 11486 * 0x02 | Handle | WORD | Varies 11487 * 0x04 | Signature | BYTEx6 | ASCII for "LENOVO" 11488 * 0x0A | OEM struct offset | BYTE | 0x0B 11489 * 0x0B | OEM struct number | BYTE | 0x07, for this structure 11490 * 0x0C | OEM struct revision | BYTE | 0x01, for this format 11491 * 0x0D | ECP version ID | STR ID | 11492 * 0x0E | ECP release date | STR ID | 11493 */ 11494 11495 /* Return if data structure not match */ 11496 if (dm->type != 140 || dm->length < 0x0F || 11497 memcmp(dmi_data + 4, "LENOVO", 6) != 0 || 11498 dmi_data[0x0A] != 0x0B || dmi_data[0x0B] != 0x07 || 11499 dmi_data[0x0C] != 0x01) 11500 return; 11501 11502 /* fwstr is the first 8byte string */ 11503 BUILD_BUG_ON(EC_FW_STRING_LEN <= 8); 11504 memcpy(ec_fw_string, dmi_data + 0x0F, 8); 11505 } 11506 11507 /* returns 0 - probe ok, or < 0 - probe error. 11508 * Probe ok doesn't mean thinkpad found. 11509 * On error, kfree() cleanup on tp->* is not performed, caller must do it */ 11510 static int __must_check __init get_thinkpad_model_data( 11511 struct thinkpad_id_data *tp) 11512 { 11513 const struct dmi_device *dev = NULL; 11514 char ec_fw_string[EC_FW_STRING_LEN] = {0}; 11515 char const *s; 11516 char t; 11517 11518 if (!tp) 11519 return -EINVAL; 11520 11521 memset(tp, 0, sizeof(*tp)); 11522 11523 if (dmi_name_in_vendors("IBM")) 11524 tp->vendor = PCI_VENDOR_ID_IBM; 11525 else if (dmi_name_in_vendors("LENOVO")) 11526 tp->vendor = PCI_VENDOR_ID_LENOVO; 11527 else if (dmi_name_in_vendors("NEC")) 11528 tp->vendor = PCI_VENDOR_ID_LENOVO; 11529 else 11530 return 0; 11531 11532 s = dmi_get_system_info(DMI_BIOS_VERSION); 11533 tp->bios_version_str = kstrdup(s, GFP_KERNEL); 11534 if (s && !tp->bios_version_str) 11535 return -ENOMEM; 11536 11537 /* Really ancient ThinkPad 240X will fail this, which is fine */ 11538 t = tpacpi_parse_fw_id(tp->bios_version_str, 11539 &tp->bios_model, &tp->bios_release); 11540 if (t != 'E' && t != 'C') 11541 return 0; 11542 11543 /* 11544 * ThinkPad T23 or newer, A31 or newer, R50e or newer, 11545 * X32 or newer, all Z series; Some models must have an 11546 * up-to-date BIOS or they will not be detected. 11547 * 11548 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 11549 */ 11550 while ((dev = dmi_find_device(DMI_DEV_TYPE_OEM_STRING, NULL, dev))) { 11551 if (sscanf(dev->name, 11552 "IBM ThinkPad Embedded Controller -[%17c", 11553 ec_fw_string) == 1) { 11554 ec_fw_string[sizeof(ec_fw_string) - 1] = 0; 11555 ec_fw_string[strcspn(ec_fw_string, " ]")] = 0; 11556 break; 11557 } 11558 } 11559 11560 /* Newer ThinkPads have different EC program info table */ 11561 if (!ec_fw_string[0]) 11562 dmi_walk(find_new_ec_fwstr, &ec_fw_string); 11563 11564 if (ec_fw_string[0]) { 11565 tp->ec_version_str = kstrdup(ec_fw_string, GFP_KERNEL); 11566 if (!tp->ec_version_str) 11567 return -ENOMEM; 11568 11569 t = tpacpi_parse_fw_id(ec_fw_string, 11570 &tp->ec_model, &tp->ec_release); 11571 if (t != 'H') { 11572 pr_notice("ThinkPad firmware release %s doesn't match the known patterns\n", 11573 ec_fw_string); 11574 pr_notice("please report this to %s\n", TPACPI_MAIL); 11575 } 11576 } 11577 11578 s = dmi_get_system_info(DMI_PRODUCT_VERSION); 11579 if (s && !(strncasecmp(s, "ThinkPad", 8) && strncasecmp(s, "Lenovo", 6))) { 11580 tp->model_str = kstrdup(s, GFP_KERNEL); 11581 if (!tp->model_str) 11582 return -ENOMEM; 11583 } else { 11584 s = dmi_get_system_info(DMI_BIOS_VENDOR); 11585 if (s && !(strncasecmp(s, "Lenovo", 6))) { 11586 tp->model_str = kstrdup(s, GFP_KERNEL); 11587 if (!tp->model_str) 11588 return -ENOMEM; 11589 } 11590 } 11591 11592 s = dmi_get_system_info(DMI_PRODUCT_NAME); 11593 tp->nummodel_str = kstrdup(s, GFP_KERNEL); 11594 if (s && !tp->nummodel_str) 11595 return -ENOMEM; 11596 11597 return 0; 11598 } 11599 11600 static int __init probe_for_thinkpad(void) 11601 { 11602 int is_thinkpad; 11603 11604 if (acpi_disabled) 11605 return -ENODEV; 11606 11607 /* It would be dangerous to run the driver in this case */ 11608 if (!tpacpi_is_ibm() && !tpacpi_is_lenovo()) 11609 return -ENODEV; 11610 11611 /* 11612 * Non-ancient models have better DMI tagging, but very old models 11613 * don't. tpacpi_is_fw_known() is a cheat to help in that case. 11614 */ 11615 is_thinkpad = (thinkpad_id.model_str != NULL) || 11616 (thinkpad_id.ec_model != 0) || 11617 tpacpi_is_fw_known(); 11618 11619 /* The EC handler is required */ 11620 tpacpi_acpi_handle_locate("ec", TPACPI_ACPI_EC_HID, &ec_handle); 11621 if (!ec_handle) { 11622 if (is_thinkpad) 11623 pr_err("Not yet supported ThinkPad detected!\n"); 11624 return -ENODEV; 11625 } 11626 11627 if (!is_thinkpad && !force_load) 11628 return -ENODEV; 11629 11630 return 0; 11631 } 11632 11633 static void __init thinkpad_acpi_init_banner(void) 11634 { 11635 pr_info("%s v%s\n", TPACPI_DESC, TPACPI_VERSION); 11636 pr_info("%s\n", TPACPI_URL); 11637 11638 pr_info("ThinkPad BIOS %s, EC %s\n", 11639 (thinkpad_id.bios_version_str) ? 11640 thinkpad_id.bios_version_str : "unknown", 11641 (thinkpad_id.ec_version_str) ? 11642 thinkpad_id.ec_version_str : "unknown"); 11643 11644 BUG_ON(!thinkpad_id.vendor); 11645 11646 if (thinkpad_id.model_str) 11647 pr_info("%s %s, model %s\n", 11648 (thinkpad_id.vendor == PCI_VENDOR_ID_IBM) ? 11649 "IBM" : ((thinkpad_id.vendor == 11650 PCI_VENDOR_ID_LENOVO) ? 11651 "Lenovo" : "Unknown vendor"), 11652 thinkpad_id.model_str, 11653 (thinkpad_id.nummodel_str) ? 11654 thinkpad_id.nummodel_str : "unknown"); 11655 } 11656 11657 /* Module init, exit, parameters */ 11658 11659 static struct ibm_init_struct ibms_init[] __initdata = { 11660 { 11661 .data = &thinkpad_acpi_driver_data, 11662 }, 11663 { 11664 .init = hotkey_init, 11665 .data = &hotkey_driver_data, 11666 }, 11667 { 11668 .init = bluetooth_init, 11669 .data = &bluetooth_driver_data, 11670 }, 11671 { 11672 .init = wan_init, 11673 .data = &wan_driver_data, 11674 }, 11675 { 11676 .init = uwb_init, 11677 .data = &uwb_driver_data, 11678 }, 11679 #ifdef CONFIG_THINKPAD_ACPI_VIDEO 11680 { 11681 .init = video_init, 11682 .base_procfs_mode = S_IRUSR, 11683 .data = &video_driver_data, 11684 }, 11685 #endif 11686 { 11687 .init = kbdlight_init, 11688 .data = &kbdlight_driver_data, 11689 }, 11690 { 11691 .init = light_init, 11692 .data = &light_driver_data, 11693 }, 11694 { 11695 .init = cmos_init, 11696 .data = &cmos_driver_data, 11697 }, 11698 { 11699 .init = led_init, 11700 .data = &led_driver_data, 11701 }, 11702 { 11703 .init = beep_init, 11704 .data = &beep_driver_data, 11705 }, 11706 { 11707 .init = thermal_init, 11708 .data = &thermal_driver_data, 11709 }, 11710 { 11711 .init = brightness_init, 11712 .data = &brightness_driver_data, 11713 }, 11714 { 11715 .init = volume_init, 11716 .data = &volume_driver_data, 11717 }, 11718 { 11719 .init = fan_init, 11720 .data = &fan_driver_data, 11721 }, 11722 { 11723 .init = mute_led_init, 11724 .data = &mute_led_driver_data, 11725 }, 11726 { 11727 .init = tpacpi_battery_init, 11728 .data = &battery_driver_data, 11729 }, 11730 { 11731 .init = tpacpi_lcdshadow_init, 11732 .data = &lcdshadow_driver_data, 11733 }, 11734 { 11735 .init = tpacpi_proxsensor_init, 11736 .data = &proxsensor_driver_data, 11737 }, 11738 { 11739 .init = tpacpi_dytc_profile_init, 11740 .data = &dytc_profile_driver_data, 11741 }, 11742 { 11743 .init = tpacpi_kbdlang_init, 11744 .data = &kbdlang_driver_data, 11745 }, 11746 { 11747 .init = tpacpi_dprc_init, 11748 .data = &dprc_driver_data, 11749 }, 11750 { 11751 .init = auxmac_init, 11752 .data = &auxmac_data, 11753 }, 11754 }; 11755 11756 static int __init set_ibm_param(const char *val, const struct kernel_param *kp) 11757 { 11758 unsigned int i; 11759 struct ibm_struct *ibm; 11760 11761 if (!kp || !kp->name || !val) 11762 return -EINVAL; 11763 11764 for (i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11765 ibm = ibms_init[i].data; 11766 if (!ibm || !ibm->name) 11767 continue; 11768 11769 if (strcmp(ibm->name, kp->name) == 0 && ibm->write) { 11770 if (strlen(val) > sizeof(ibms_init[i].param) - 1) 11771 return -ENOSPC; 11772 strscpy(ibms_init[i].param, val); 11773 return 0; 11774 } 11775 } 11776 11777 return -EINVAL; 11778 } 11779 11780 module_param(experimental, int, 0444); 11781 MODULE_PARM_DESC(experimental, 11782 "Enables experimental features when non-zero"); 11783 11784 module_param_named(debug, dbg_level, uint, 0); 11785 MODULE_PARM_DESC(debug, "Sets debug level bit-mask"); 11786 11787 module_param(force_load, bool, 0444); 11788 MODULE_PARM_DESC(force_load, 11789 "Attempts to load the driver even on a mis-identified ThinkPad when true"); 11790 11791 module_param_named(fan_control, fan_control_allowed, bool, 0444); 11792 MODULE_PARM_DESC(fan_control, 11793 "Enables setting fan parameters features when true"); 11794 11795 module_param_named(brightness_mode, brightness_mode, uint, 0444); 11796 MODULE_PARM_DESC(brightness_mode, 11797 "Selects brightness control strategy: 0=auto, 1=EC, 2=UCMS, 3=EC+NVRAM"); 11798 11799 module_param(brightness_enable, uint, 0444); 11800 MODULE_PARM_DESC(brightness_enable, 11801 "Enables backlight control when 1, disables when 0"); 11802 11803 #ifdef CONFIG_THINKPAD_ACPI_ALSA_SUPPORT 11804 module_param_named(volume_mode, volume_mode, uint, 0444); 11805 MODULE_PARM_DESC(volume_mode, 11806 "Selects volume control strategy: 0=auto, 1=EC, 2=N/A, 3=EC+NVRAM"); 11807 11808 module_param_named(volume_capabilities, volume_capabilities, uint, 0444); 11809 MODULE_PARM_DESC(volume_capabilities, 11810 "Selects the mixer capabilities: 0=auto, 1=volume and mute, 2=mute only"); 11811 11812 module_param_named(volume_control, volume_control_allowed, bool, 0444); 11813 MODULE_PARM_DESC(volume_control, 11814 "Enables software override for the console audio control when true"); 11815 11816 module_param_named(software_mute, software_mute_requested, bool, 0444); 11817 MODULE_PARM_DESC(software_mute, 11818 "Request full software mute control"); 11819 11820 /* ALSA module API parameters */ 11821 module_param_named(index, alsa_index, int, 0444); 11822 MODULE_PARM_DESC(index, "ALSA index for the ACPI EC Mixer"); 11823 module_param_named(id, alsa_id, charp, 0444); 11824 MODULE_PARM_DESC(id, "ALSA id for the ACPI EC Mixer"); 11825 module_param_named(enable, alsa_enable, bool, 0444); 11826 MODULE_PARM_DESC(enable, "Enable the ALSA interface for the ACPI EC Mixer"); 11827 #endif /* CONFIG_THINKPAD_ACPI_ALSA_SUPPORT */ 11828 11829 /* The module parameter can't be read back, that's why 0 is used here */ 11830 #define TPACPI_PARAM(feature) \ 11831 module_param_call(feature, set_ibm_param, NULL, NULL, 0); \ 11832 MODULE_PARM_DESC(feature, "Simulates thinkpad-acpi procfs command at module load, see documentation") 11833 11834 TPACPI_PARAM(hotkey); 11835 TPACPI_PARAM(bluetooth); 11836 TPACPI_PARAM(video); 11837 TPACPI_PARAM(light); 11838 TPACPI_PARAM(cmos); 11839 TPACPI_PARAM(led); 11840 TPACPI_PARAM(beep); 11841 TPACPI_PARAM(brightness); 11842 TPACPI_PARAM(volume); 11843 TPACPI_PARAM(fan); 11844 11845 #ifdef CONFIG_THINKPAD_ACPI_DEBUGFACILITIES 11846 module_param(dbg_wlswemul, uint, 0444); 11847 MODULE_PARM_DESC(dbg_wlswemul, "Enables WLSW emulation"); 11848 module_param_named(wlsw_state, tpacpi_wlsw_emulstate, bool, 0); 11849 MODULE_PARM_DESC(wlsw_state, 11850 "Initial state of the emulated WLSW switch"); 11851 11852 module_param(dbg_bluetoothemul, uint, 0444); 11853 MODULE_PARM_DESC(dbg_bluetoothemul, "Enables bluetooth switch emulation"); 11854 module_param_named(bluetooth_state, tpacpi_bluetooth_emulstate, bool, 0); 11855 MODULE_PARM_DESC(bluetooth_state, 11856 "Initial state of the emulated bluetooth switch"); 11857 11858 module_param(dbg_wwanemul, uint, 0444); 11859 MODULE_PARM_DESC(dbg_wwanemul, "Enables WWAN switch emulation"); 11860 module_param_named(wwan_state, tpacpi_wwan_emulstate, bool, 0); 11861 MODULE_PARM_DESC(wwan_state, 11862 "Initial state of the emulated WWAN switch"); 11863 11864 module_param(dbg_uwbemul, uint, 0444); 11865 MODULE_PARM_DESC(dbg_uwbemul, "Enables UWB switch emulation"); 11866 module_param_named(uwb_state, tpacpi_uwb_emulstate, bool, 0); 11867 MODULE_PARM_DESC(uwb_state, 11868 "Initial state of the emulated UWB switch"); 11869 #endif 11870 11871 module_param(profile_force, int, 0444); 11872 MODULE_PARM_DESC(profile_force, "Force profile mode. -1=off, 1=MMC, 2=PSC"); 11873 11874 static void thinkpad_acpi_module_exit(void) 11875 { 11876 tpacpi_lifecycle = TPACPI_LIFE_EXITING; 11877 11878 if (tpacpi_sensors_pdev) { 11879 platform_driver_unregister(&tpacpi_hwmon_pdriver); 11880 platform_device_unregister(tpacpi_sensors_pdev); 11881 } 11882 11883 if (tp_features.platform_drv_registered) 11884 platform_driver_unregister(&tpacpi_pdriver); 11885 if (tpacpi_pdev) 11886 platform_device_unregister(tpacpi_pdev); 11887 11888 if (proc_dir) 11889 remove_proc_entry(TPACPI_PROC_DIR, acpi_root_dir); 11890 if (tpacpi_wq) 11891 destroy_workqueue(tpacpi_wq); 11892 11893 kfree(thinkpad_id.bios_version_str); 11894 kfree(thinkpad_id.ec_version_str); 11895 kfree(thinkpad_id.model_str); 11896 kfree(thinkpad_id.nummodel_str); 11897 } 11898 11899 static void tpacpi_subdrivers_release(void *data) 11900 { 11901 struct ibm_struct *ibm, *itmp; 11902 11903 list_for_each_entry_safe_reverse(ibm, itmp, &tpacpi_all_drivers, all_drivers) 11904 ibm_exit(ibm); 11905 11906 dbg_printk(TPACPI_DBG_INIT, "finished subdriver exit path...\n"); 11907 } 11908 11909 static int __init tpacpi_pdriver_probe(struct platform_device *pdev) 11910 { 11911 int ret; 11912 11913 ret = devm_mutex_init(&pdev->dev, &tpacpi_inputdev_send_mutex); 11914 if (ret) 11915 return ret; 11916 11917 tpacpi_inputdev = devm_input_allocate_device(&pdev->dev); 11918 if (!tpacpi_inputdev) 11919 return -ENOMEM; 11920 11921 tpacpi_inputdev->name = "ThinkPad Extra Buttons"; 11922 tpacpi_inputdev->phys = TPACPI_DRVR_NAME "/input0"; 11923 tpacpi_inputdev->id.bustype = BUS_HOST; 11924 tpacpi_inputdev->id.vendor = thinkpad_id.vendor; 11925 tpacpi_inputdev->id.product = TPACPI_HKEY_INPUT_PRODUCT; 11926 tpacpi_inputdev->id.version = TPACPI_HKEY_INPUT_VERSION; 11927 tpacpi_inputdev->dev.parent = &tpacpi_pdev->dev; 11928 11929 /* Init subdriver dependencies */ 11930 tpacpi_detect_brightness_capabilities(); 11931 11932 /* Init subdrivers */ 11933 for (unsigned int i = 0; i < ARRAY_SIZE(ibms_init); i++) { 11934 ret = ibm_init(&ibms_init[i]); 11935 if (ret >= 0 && *ibms_init[i].param) 11936 ret = ibms_init[i].data->write(ibms_init[i].param); 11937 if (ret < 0) { 11938 tpacpi_subdrivers_release(NULL); 11939 return ret; 11940 } 11941 } 11942 11943 ret = devm_add_action_or_reset(&pdev->dev, tpacpi_subdrivers_release, NULL); 11944 if (ret) 11945 return ret; 11946 11947 ret = input_register_device(tpacpi_inputdev); 11948 if (ret < 0) 11949 pr_err("unable to register input device\n"); 11950 11951 return ret; 11952 } 11953 11954 static int __init tpacpi_hwmon_pdriver_probe(struct platform_device *pdev) 11955 { 11956 tpacpi_hwmon = devm_hwmon_device_register_with_groups(&pdev->dev, TPACPI_NAME, 11957 NULL, tpacpi_hwmon_groups); 11958 if (IS_ERR(tpacpi_hwmon)) 11959 pr_err("unable to register hwmon device\n"); 11960 11961 return PTR_ERR_OR_ZERO(tpacpi_hwmon); 11962 } 11963 11964 static int __init thinkpad_acpi_module_init(void) 11965 { 11966 const struct dmi_system_id *dmi_id; 11967 int ret; 11968 acpi_object_type obj_type; 11969 11970 tpacpi_lifecycle = TPACPI_LIFE_INIT; 11971 11972 /* Driver-level probe */ 11973 11974 ret = get_thinkpad_model_data(&thinkpad_id); 11975 if (ret) { 11976 pr_err("unable to get DMI data: %d\n", ret); 11977 thinkpad_acpi_module_exit(); 11978 return ret; 11979 } 11980 ret = probe_for_thinkpad(); 11981 if (ret) { 11982 thinkpad_acpi_module_exit(); 11983 return ret; 11984 } 11985 11986 /* Driver initialization */ 11987 11988 thinkpad_acpi_init_banner(); 11989 tpacpi_check_outdated_fw(); 11990 11991 TPACPI_ACPIHANDLE_INIT(ecrd); 11992 TPACPI_ACPIHANDLE_INIT(ecwr); 11993 11994 /* 11995 * Quirk: in some models (e.g. X380 Yoga), an object named ECRD 11996 * exists, but it is a register, not a method. 11997 */ 11998 if (ecrd_handle) { 11999 acpi_get_type(ecrd_handle, &obj_type); 12000 if (obj_type != ACPI_TYPE_METHOD) 12001 ecrd_handle = NULL; 12002 } 12003 if (ecwr_handle) { 12004 acpi_get_type(ecwr_handle, &obj_type); 12005 if (obj_type != ACPI_TYPE_METHOD) 12006 ecwr_handle = NULL; 12007 } 12008 12009 tpacpi_wq = create_singlethread_workqueue(TPACPI_WORKQUEUE_NAME); 12010 if (!tpacpi_wq) { 12011 thinkpad_acpi_module_exit(); 12012 return -ENOMEM; 12013 } 12014 12015 proc_dir = proc_mkdir(TPACPI_PROC_DIR, acpi_root_dir); 12016 if (!proc_dir) { 12017 pr_err("unable to create proc dir " TPACPI_PROC_DIR "\n"); 12018 thinkpad_acpi_module_exit(); 12019 return -ENODEV; 12020 } 12021 12022 dmi_id = dmi_first_match(fwbug_list); 12023 if (dmi_id) 12024 tp_features.quirks = dmi_id->driver_data; 12025 12026 /* Device initialization */ 12027 tpacpi_pdev = platform_device_register_simple(TPACPI_DRVR_NAME, PLATFORM_DEVID_NONE, 12028 NULL, 0); 12029 if (IS_ERR(tpacpi_pdev)) { 12030 ret = PTR_ERR(tpacpi_pdev); 12031 tpacpi_pdev = NULL; 12032 pr_err("unable to register platform device\n"); 12033 thinkpad_acpi_module_exit(); 12034 return ret; 12035 } 12036 12037 ret = platform_driver_probe(&tpacpi_pdriver, tpacpi_pdriver_probe); 12038 if (ret) { 12039 pr_err("unable to register main platform driver\n"); 12040 thinkpad_acpi_module_exit(); 12041 return ret; 12042 } 12043 tp_features.platform_drv_registered = 1; 12044 12045 tpacpi_sensors_pdev = platform_create_bundle(&tpacpi_hwmon_pdriver, 12046 tpacpi_hwmon_pdriver_probe, 12047 NULL, 0, NULL, 0); 12048 if (IS_ERR(tpacpi_sensors_pdev)) { 12049 ret = PTR_ERR(tpacpi_sensors_pdev); 12050 tpacpi_sensors_pdev = NULL; 12051 pr_err("unable to register hwmon platform device/driver bundle\n"); 12052 thinkpad_acpi_module_exit(); 12053 return ret; 12054 } 12055 12056 tpacpi_lifecycle = TPACPI_LIFE_RUNNING; 12057 12058 return 0; 12059 } 12060 12061 MODULE_ALIAS(TPACPI_DRVR_SHORTNAME); 12062 12063 /* 12064 * This will autoload the driver in almost every ThinkPad 12065 * in widespread use. 12066 * 12067 * Only _VERY_ old models, like the 240, 240x and 570 lack 12068 * the HKEY event interface. 12069 */ 12070 MODULE_DEVICE_TABLE(acpi, ibm_htk_device_ids); 12071 12072 /* 12073 * DMI matching for module autoloading 12074 * 12075 * See https://thinkwiki.org/wiki/List_of_DMI_IDs 12076 * See https://thinkwiki.org/wiki/BIOS_Upgrade_Downloads 12077 * 12078 * Only models listed in thinkwiki will be supported, so add yours 12079 * if it is not there yet. 12080 */ 12081 #define IBM_BIOS_MODULE_ALIAS(__type) \ 12082 MODULE_ALIAS("dmi:bvnIBM:bvr" __type "ET??WW*") 12083 12084 /* Ancient thinkpad BIOSes have to be identified by 12085 * BIOS type or model number, and there are far less 12086 * BIOS types than model numbers... */ 12087 IBM_BIOS_MODULE_ALIAS("I[MU]"); /* 570, 570e */ 12088 12089 MODULE_AUTHOR("Borislav Deianov <borislav@users.sf.net>"); 12090 MODULE_AUTHOR("Henrique de Moraes Holschuh <hmh@hmh.eng.br>"); 12091 MODULE_DESCRIPTION(TPACPI_DESC); 12092 MODULE_VERSION(TPACPI_VERSION); 12093 MODULE_LICENSE("GPL"); 12094 12095 module_init(thinkpad_acpi_module_init); 12096 module_exit(thinkpad_acpi_module_exit); 12097