1 /* 2 * Driver for the NXP SAA7164 PCIe bridge 3 * 4 * Copyright (c) 2010 Steven Toth <stoth@kernellabs.com> 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * 15 * GNU General Public License for more details. 16 * 17 * You should have received a copy of the GNU General Public License 18 * along with this program; if not, write to the Free Software 19 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 */ 21 22 /* 23 Driver architecture 24 ******************* 25 26 saa7164_core.c/buffer.c/cards.c/i2c.c/dvb.c 27 | : Standard Linux driver framework for creating 28 | : exposing and managing interfaces to the rest 29 | : of the kernel or userland. Also uses _fw.c to load 30 | : firmware direct into the PCIe bus, bypassing layers. 31 V 32 saa7164_api..() : Translate kernel specific functions/features 33 | : into command buffers. 34 V 35 saa7164_cmd..() : Manages the flow of command packets on/off, 36 | : the bus. Deal with bus errors, timeouts etc. 37 V 38 saa7164_bus..() : Manage a read/write memory ring buffer in the 39 | : PCIe Address space. 40 | 41 | saa7164_fw...() : Load any frimware 42 | | : direct into the device 43 V V 44 <- ----------------- PCIe address space -------------------- -> 45 */ 46 47 #include <linux/pci.h> 48 #include <linux/i2c.h> 49 #include <linux/i2c-algo-bit.h> 50 #include <linux/kdev_t.h> 51 #include <linux/mutex.h> 52 #include <linux/crc32.h> 53 #include <linux/kthread.h> 54 #include <linux/freezer.h> 55 56 #include <media/tuner.h> 57 #include <media/tveeprom.h> 58 #include <media/videobuf-dma-sg.h> 59 #include <media/videobuf-dvb.h> 60 #include <dvb_demux.h> 61 #include <dvb_frontend.h> 62 #include <dvb_net.h> 63 #include <dvbdev.h> 64 #include <dmxdev.h> 65 #include <media/v4l2-common.h> 66 #include <media/v4l2-ioctl.h> 67 #include <media/v4l2-chip-ident.h> 68 69 #include "saa7164-reg.h" 70 #include "saa7164-types.h" 71 72 #define SAA7164_MAXBOARDS 8 73 74 #define UNSET (-1U) 75 #define SAA7164_BOARD_NOAUTO UNSET 76 #define SAA7164_BOARD_UNKNOWN 0 77 #define SAA7164_BOARD_UNKNOWN_REV2 1 78 #define SAA7164_BOARD_UNKNOWN_REV3 2 79 #define SAA7164_BOARD_HAUPPAUGE_HVR2250 3 80 #define SAA7164_BOARD_HAUPPAUGE_HVR2200 4 81 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_2 5 82 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_3 6 83 #define SAA7164_BOARD_HAUPPAUGE_HVR2250_2 7 84 #define SAA7164_BOARD_HAUPPAUGE_HVR2250_3 8 85 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_4 9 86 #define SAA7164_BOARD_HAUPPAUGE_HVR2200_5 10 87 88 #define SAA7164_MAX_UNITS 8 89 #define SAA7164_TS_NUMBER_OF_LINES 312 90 #define SAA7164_PS_NUMBER_OF_LINES 256 91 #define SAA7164_PT_ENTRIES 16 /* (312 * 188) / 4096 */ 92 #define SAA7164_MAX_ENCODER_BUFFERS 64 /* max 5secs of latency at 6Mbps */ 93 #define SAA7164_MAX_VBI_BUFFERS 64 94 95 /* Port related defines */ 96 #define SAA7164_PORT_TS1 (0) 97 #define SAA7164_PORT_TS2 (SAA7164_PORT_TS1 + 1) 98 #define SAA7164_PORT_ENC1 (SAA7164_PORT_TS2 + 1) 99 #define SAA7164_PORT_ENC2 (SAA7164_PORT_ENC1 + 1) 100 #define SAA7164_PORT_VBI1 (SAA7164_PORT_ENC2 + 1) 101 #define SAA7164_PORT_VBI2 (SAA7164_PORT_VBI1 + 1) 102 #define SAA7164_MAX_PORTS (SAA7164_PORT_VBI2 + 1) 103 104 #define DBGLVL_FW 4 105 #define DBGLVL_DVB 8 106 #define DBGLVL_I2C 16 107 #define DBGLVL_API 32 108 #define DBGLVL_CMD 64 109 #define DBGLVL_BUS 128 110 #define DBGLVL_IRQ 256 111 #define DBGLVL_BUF 512 112 #define DBGLVL_ENC 1024 113 #define DBGLVL_VBI 2048 114 #define DBGLVL_THR 4096 115 #define DBGLVL_CPU 8192 116 117 #define SAA7164_NORMS \ 118 (V4L2_STD_NTSC_M | V4L2_STD_NTSC_M_JP | V4L2_STD_NTSC_443) 119 120 enum port_t { 121 SAA7164_MPEG_UNDEFINED = 0, 122 SAA7164_MPEG_DVB, 123 SAA7164_MPEG_ENCODER, 124 SAA7164_MPEG_VBI, 125 }; 126 127 enum saa7164_i2c_bus_nr { 128 SAA7164_I2C_BUS_0 = 0, 129 SAA7164_I2C_BUS_1, 130 SAA7164_I2C_BUS_2, 131 }; 132 133 enum saa7164_buffer_flags { 134 SAA7164_BUFFER_UNDEFINED = 0, 135 SAA7164_BUFFER_FREE, 136 SAA7164_BUFFER_BUSY, 137 SAA7164_BUFFER_FULL 138 }; 139 140 enum saa7164_unit_type { 141 SAA7164_UNIT_UNDEFINED = 0, 142 SAA7164_UNIT_DIGITAL_DEMODULATOR, 143 SAA7164_UNIT_ANALOG_DEMODULATOR, 144 SAA7164_UNIT_TUNER, 145 SAA7164_UNIT_EEPROM, 146 SAA7164_UNIT_ZILOG_IRBLASTER, 147 SAA7164_UNIT_ENCODER, 148 }; 149 150 /* The PCIe bridge doesn't grant direct access to i2c. 151 * Instead, you address i2c devices using a uniqely 152 * allocated 'unitid' value via a messaging API. This 153 * is a problem. The kernel and existing demod/tuner 154 * drivers expect to talk 'i2c', so we have to maintain 155 * a translation layer, and a series of functions to 156 * convert i2c bus + device address into a unit id. 157 */ 158 struct saa7164_unit { 159 enum saa7164_unit_type type; 160 u8 id; 161 char *name; 162 enum saa7164_i2c_bus_nr i2c_bus_nr; 163 u8 i2c_bus_addr; 164 u8 i2c_reg_len; 165 }; 166 167 struct saa7164_board { 168 char *name; 169 enum port_t porta, portb, portc, 170 portd, porte, portf; 171 enum { 172 SAA7164_CHIP_UNDEFINED = 0, 173 SAA7164_CHIP_REV2, 174 SAA7164_CHIP_REV3, 175 } chiprev; 176 struct saa7164_unit unit[SAA7164_MAX_UNITS]; 177 }; 178 179 struct saa7164_subid { 180 u16 subvendor; 181 u16 subdevice; 182 u32 card; 183 }; 184 185 struct saa7164_encoder_fh { 186 struct saa7164_port *port; 187 atomic_t v4l_reading; 188 }; 189 190 struct saa7164_vbi_fh { 191 struct saa7164_port *port; 192 atomic_t v4l_reading; 193 }; 194 195 struct saa7164_histogram_bucket { 196 u32 val; 197 u32 count; 198 u64 update_time; 199 }; 200 201 struct saa7164_histogram { 202 char name[32]; 203 struct saa7164_histogram_bucket counter1[64]; 204 }; 205 206 struct saa7164_user_buffer { 207 struct list_head list; 208 209 /* Attributes */ 210 u8 *data; 211 u32 pos; 212 u32 actual_size; 213 214 u32 crc; 215 }; 216 217 struct saa7164_fw_status { 218 219 /* RISC Core details */ 220 u32 status; 221 u32 mode; 222 u32 spec; 223 u32 inst; 224 u32 cpuload; 225 u32 remainheap; 226 227 /* Firmware version */ 228 u32 version; 229 u32 major; 230 u32 sub; 231 u32 rel; 232 u32 buildnr; 233 }; 234 235 struct saa7164_dvb { 236 struct mutex lock; 237 struct dvb_adapter adapter; 238 struct dvb_frontend *frontend; 239 struct dvb_demux demux; 240 struct dmxdev dmxdev; 241 struct dmx_frontend fe_hw; 242 struct dmx_frontend fe_mem; 243 struct dvb_net net; 244 int feeding; 245 }; 246 247 struct saa7164_i2c { 248 struct saa7164_dev *dev; 249 250 enum saa7164_i2c_bus_nr nr; 251 252 /* I2C I/O */ 253 struct i2c_adapter i2c_adap; 254 struct i2c_algo_bit_data i2c_algo; 255 struct i2c_client i2c_client; 256 u32 i2c_rc; 257 }; 258 259 struct saa7164_ctrl { 260 struct v4l2_queryctrl v; 261 }; 262 263 struct saa7164_tvnorm { 264 char *name; 265 v4l2_std_id id; 266 }; 267 268 struct saa7164_encoder_params { 269 struct saa7164_tvnorm encodernorm; 270 u32 height; 271 u32 width; 272 u32 is_50hz; 273 u32 bitrate; /* bps */ 274 u32 bitrate_peak; /* bps */ 275 u32 bitrate_mode; 276 u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */ 277 278 u32 audio_sampling_freq; 279 u32 ctl_mute; 280 u32 ctl_aspect; 281 u32 refdist; 282 u32 gop_size; 283 }; 284 285 struct saa7164_vbi_params { 286 struct saa7164_tvnorm encodernorm; 287 u32 height; 288 u32 width; 289 u32 is_50hz; 290 u32 bitrate; /* bps */ 291 u32 bitrate_peak; /* bps */ 292 u32 bitrate_mode; 293 u32 stream_type; /* V4L2_MPEG_STREAM_TYPE_MPEG2_TS */ 294 295 u32 audio_sampling_freq; 296 u32 ctl_mute; 297 u32 ctl_aspect; 298 u32 refdist; 299 u32 gop_size; 300 }; 301 302 struct saa7164_port; 303 304 struct saa7164_buffer { 305 struct list_head list; 306 307 /* Note of which h/w buffer list index position we occupy */ 308 int idx; 309 310 struct saa7164_port *port; 311 312 /* Hardware Specific */ 313 /* PCI Memory allocations */ 314 enum saa7164_buffer_flags flags; /* Free, Busy, Full */ 315 316 /* A block of page align PCI memory */ 317 u32 pci_size; /* PCI allocation size in bytes */ 318 u64 __iomem *cpu; /* Virtual address */ 319 dma_addr_t dma; /* Physical address */ 320 u32 crc; /* Checksum for the entire buffer data */ 321 322 /* A page table that splits the block into a number of entries */ 323 u32 pt_size; /* PCI allocation size in bytes */ 324 u64 __iomem *pt_cpu; /* Virtual address */ 325 dma_addr_t pt_dma; /* Physical address */ 326 327 /* Encoder fops */ 328 u32 pos; 329 u32 actual_size; 330 }; 331 332 struct saa7164_port { 333 334 struct saa7164_dev *dev; 335 enum port_t type; 336 int nr; 337 338 /* --- Generic port attributes --- */ 339 340 /* HW stream parameters */ 341 struct tmHWStreamParameters hw_streamingparams; 342 343 /* DMA configuration values, is seeded during initialization */ 344 struct tmComResDMATermDescrHeader hwcfg; 345 346 /* hardware specific registers */ 347 u32 bufcounter; 348 u32 pitch; 349 u32 bufsize; 350 u32 bufoffset; 351 u32 bufptr32l; 352 u32 bufptr32h; 353 u64 bufptr64; 354 355 u32 numpte; /* Number of entries in array, only valid in head */ 356 357 struct mutex dmaqueue_lock; 358 struct saa7164_buffer dmaqueue; 359 360 u64 last_irq_msecs, last_svc_msecs; 361 u64 last_irq_msecs_diff, last_svc_msecs_diff; 362 u32 last_svc_wp; 363 u32 last_svc_rp; 364 u64 last_irq_svc_msecs_diff; 365 u64 last_read_msecs, last_read_msecs_diff; 366 u64 last_poll_msecs, last_poll_msecs_diff; 367 368 struct saa7164_histogram irq_interval; 369 struct saa7164_histogram svc_interval; 370 struct saa7164_histogram irq_svc_interval; 371 struct saa7164_histogram read_interval; 372 struct saa7164_histogram poll_interval; 373 374 /* --- DVB Transport Specific --- */ 375 struct saa7164_dvb dvb; 376 377 /* --- Encoder/V4L related attributes --- */ 378 /* Encoder */ 379 /* Defaults established in saa7164-encoder.c */ 380 struct saa7164_tvnorm encodernorm; 381 u32 height; 382 u32 width; 383 u32 freq; 384 u32 ts_packet_size; 385 u32 ts_packet_count; 386 u8 mux_input; 387 u8 encoder_profile; 388 u8 video_format; 389 u8 audio_format; 390 u8 video_resolution; 391 u16 ctl_brightness; 392 u16 ctl_contrast; 393 u16 ctl_hue; 394 u16 ctl_saturation; 395 u16 ctl_sharpness; 396 s8 ctl_volume; 397 398 struct tmComResAFeatureDescrHeader audfeat; 399 struct tmComResEncoderDescrHeader encunit; 400 struct tmComResProcDescrHeader vidproc; 401 struct tmComResExtDevDescrHeader ifunit; 402 struct tmComResTunerDescrHeader tunerunit; 403 404 struct work_struct workenc; 405 406 /* V4L Encoder Video */ 407 struct saa7164_encoder_params encoder_params; 408 struct video_device *v4l_device; 409 atomic_t v4l_reader_count; 410 411 struct saa7164_buffer list_buf_used; 412 struct saa7164_buffer list_buf_free; 413 wait_queue_head_t wait_read; 414 415 /* V4L VBI */ 416 struct tmComResVBIFormatDescrHeader vbi_fmt_ntsc; 417 struct saa7164_vbi_params vbi_params; 418 419 /* Debug */ 420 u32 sync_errors; 421 u32 v_cc_errors; 422 u32 a_cc_errors; 423 u8 last_v_cc; 424 u8 last_a_cc; 425 u32 done_first_interrupt; 426 }; 427 428 struct saa7164_dev { 429 struct list_head devlist; 430 atomic_t refcount; 431 432 /* pci stuff */ 433 struct pci_dev *pci; 434 unsigned char pci_rev, pci_lat; 435 int pci_bus, pci_slot; 436 u32 __iomem *lmmio; 437 u8 __iomem *bmmio; 438 u32 __iomem *lmmio2; 439 u8 __iomem *bmmio2; 440 int pci_irqmask; 441 442 /* board details */ 443 int nr; 444 int hwrevision; 445 u32 board; 446 char name[16]; 447 448 /* firmware status */ 449 struct saa7164_fw_status fw_status; 450 u32 firmwareloaded; 451 452 struct tmComResHWDescr hwdesc; 453 struct tmComResInterfaceDescr intfdesc; 454 struct tmComResBusDescr busdesc; 455 456 struct tmComResBusInfo bus; 457 458 /* Interrupt status and ack registers */ 459 u32 int_status; 460 u32 int_ack; 461 462 struct cmd cmds[SAA_CMD_MAX_MSG_UNITS]; 463 struct mutex lock; 464 465 /* I2c related */ 466 struct saa7164_i2c i2c_bus[3]; 467 468 /* Transport related */ 469 struct saa7164_port ports[SAA7164_MAX_PORTS]; 470 471 /* Deferred command/api interrupts handling */ 472 struct work_struct workcmd; 473 474 /* A kernel thread to monitor the firmware log, used 475 * only in debug mode. 476 */ 477 struct task_struct *kthread; 478 479 }; 480 481 extern struct list_head saa7164_devlist; 482 extern unsigned int waitsecs; 483 extern unsigned int encoder_buffers; 484 extern unsigned int vbi_buffers; 485 486 /* ----------------------------------------------------------- */ 487 /* saa7164-core.c */ 488 void saa7164_dumpregs(struct saa7164_dev *dev, u32 addr); 489 void saa7164_dumphex16(struct saa7164_dev *dev, u8 *buf, int len); 490 void saa7164_getfirmwarestatus(struct saa7164_dev *dev); 491 u32 saa7164_getcurrentfirmwareversion(struct saa7164_dev *dev); 492 void saa7164_histogram_update(struct saa7164_histogram *hg, u32 val); 493 494 /* ----------------------------------------------------------- */ 495 /* saa7164-fw.c */ 496 int saa7164_downloadfirmware(struct saa7164_dev *dev); 497 498 /* ----------------------------------------------------------- */ 499 /* saa7164-i2c.c */ 500 extern int saa7164_i2c_register(struct saa7164_i2c *bus); 501 extern int saa7164_i2c_unregister(struct saa7164_i2c *bus); 502 extern void saa7164_call_i2c_clients(struct saa7164_i2c *bus, 503 unsigned int cmd, void *arg); 504 505 /* ----------------------------------------------------------- */ 506 /* saa7164-bus.c */ 507 int saa7164_bus_setup(struct saa7164_dev *dev); 508 void saa7164_bus_dump(struct saa7164_dev *dev); 509 int saa7164_bus_set(struct saa7164_dev *dev, struct tmComResInfo* msg, 510 void *buf); 511 int saa7164_bus_get(struct saa7164_dev *dev, struct tmComResInfo* msg, 512 void *buf, int peekonly); 513 514 /* ----------------------------------------------------------- */ 515 /* saa7164-cmd.c */ 516 int saa7164_cmd_send(struct saa7164_dev *dev, 517 u8 id, enum tmComResCmd command, u16 controlselector, 518 u16 size, void *buf); 519 void saa7164_cmd_signal(struct saa7164_dev *dev, u8 seqno); 520 int saa7164_irq_dequeue(struct saa7164_dev *dev); 521 522 /* ----------------------------------------------------------- */ 523 /* saa7164-api.c */ 524 int saa7164_api_get_fw_version(struct saa7164_dev *dev, u32 *version); 525 int saa7164_api_enum_subdevs(struct saa7164_dev *dev); 526 int saa7164_api_i2c_read(struct saa7164_i2c *bus, u8 addr, u32 reglen, u8 *reg, 527 u32 datalen, u8 *data); 528 int saa7164_api_i2c_write(struct saa7164_i2c *bus, u8 addr, 529 u32 datalen, u8 *data); 530 int saa7164_api_dif_write(struct saa7164_i2c *bus, u8 addr, 531 u32 datalen, u8 *data); 532 int saa7164_api_read_eeprom(struct saa7164_dev *dev, u8 *buf, int buflen); 533 int saa7164_api_set_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin); 534 int saa7164_api_clear_gpiobit(struct saa7164_dev *dev, u8 unitid, u8 pin); 535 int saa7164_api_transition_port(struct saa7164_port *port, u8 mode); 536 int saa7164_api_initialize_dif(struct saa7164_port *port); 537 int saa7164_api_configure_dif(struct saa7164_port *port, u32 std); 538 int saa7164_api_set_encoder(struct saa7164_port *port); 539 int saa7164_api_get_encoder(struct saa7164_port *port); 540 int saa7164_api_set_aspect_ratio(struct saa7164_port *port); 541 int saa7164_api_set_usercontrol(struct saa7164_port *port, u8 ctl); 542 int saa7164_api_get_usercontrol(struct saa7164_port *port, u8 ctl); 543 int saa7164_api_set_videomux(struct saa7164_port *port); 544 int saa7164_api_audio_mute(struct saa7164_port *port, int mute); 545 int saa7164_api_set_audio_volume(struct saa7164_port *port, s8 level); 546 int saa7164_api_set_audio_std(struct saa7164_port *port); 547 int saa7164_api_set_audio_detection(struct saa7164_port *port, int autodetect); 548 int saa7164_api_get_videomux(struct saa7164_port *port); 549 int saa7164_api_set_vbi_format(struct saa7164_port *port); 550 int saa7164_api_set_debug(struct saa7164_dev *dev, u8 level); 551 int saa7164_api_collect_debug(struct saa7164_dev *dev); 552 int saa7164_api_get_load_info(struct saa7164_dev *dev, 553 struct tmFwInfoStruct *i); 554 555 /* ----------------------------------------------------------- */ 556 /* saa7164-cards.c */ 557 extern struct saa7164_board saa7164_boards[]; 558 extern const unsigned int saa7164_bcount; 559 560 extern struct saa7164_subid saa7164_subids[]; 561 extern const unsigned int saa7164_idcount; 562 563 extern void saa7164_card_list(struct saa7164_dev *dev); 564 extern void saa7164_gpio_setup(struct saa7164_dev *dev); 565 extern void saa7164_card_setup(struct saa7164_dev *dev); 566 567 extern int saa7164_i2caddr_to_reglen(struct saa7164_i2c *bus, int addr); 568 extern int saa7164_i2caddr_to_unitid(struct saa7164_i2c *bus, int addr); 569 extern char *saa7164_unitid_name(struct saa7164_dev *dev, u8 unitid); 570 571 /* ----------------------------------------------------------- */ 572 /* saa7164-dvb.c */ 573 extern int saa7164_dvb_register(struct saa7164_port *port); 574 extern int saa7164_dvb_unregister(struct saa7164_port *port); 575 576 /* ----------------------------------------------------------- */ 577 /* saa7164-buffer.c */ 578 extern struct saa7164_buffer *saa7164_buffer_alloc( 579 struct saa7164_port *port, u32 len); 580 extern int saa7164_buffer_dealloc(struct saa7164_buffer *buf); 581 extern void saa7164_buffer_display(struct saa7164_buffer *buf); 582 extern int saa7164_buffer_activate(struct saa7164_buffer *buf, int i); 583 extern int saa7164_buffer_cfg_port(struct saa7164_port *port); 584 extern struct saa7164_user_buffer *saa7164_buffer_alloc_user( 585 struct saa7164_dev *dev, u32 len); 586 extern void saa7164_buffer_dealloc_user(struct saa7164_user_buffer *buf); 587 extern int saa7164_buffer_zero_offsets(struct saa7164_port *port, int i); 588 589 /* ----------------------------------------------------------- */ 590 /* saa7164-encoder.c */ 591 int saa7164_encoder_register(struct saa7164_port *port); 592 void saa7164_encoder_unregister(struct saa7164_port *port); 593 594 /* ----------------------------------------------------------- */ 595 /* saa7164-vbi.c */ 596 int saa7164_vbi_register(struct saa7164_port *port); 597 void saa7164_vbi_unregister(struct saa7164_port *port); 598 599 /* ----------------------------------------------------------- */ 600 601 extern unsigned int crc_checking; 602 603 extern unsigned int saa_debug; 604 #define dprintk(level, fmt, arg...)\ 605 do { if (saa_debug & level)\ 606 printk(KERN_DEBUG "%s: " fmt, dev->name, ## arg);\ 607 } while (0) 608 609 #define log_warn(fmt, arg...)\ 610 do { \ 611 printk(KERN_WARNING "%s: " fmt, dev->name, ## arg);\ 612 } while (0) 613 614 #define log_err(fmt, arg...)\ 615 do { \ 616 printk(KERN_ERROR "%s: " fmt, dev->name, ## arg);\ 617 } while (0) 618 619 #define saa7164_readl(reg) readl(dev->lmmio + ((reg) >> 2)) 620 #define saa7164_writel(reg, value) writel((value), dev->lmmio + ((reg) >> 2)) 621 622 #define saa7164_readb(reg) readl(dev->bmmio + (reg)) 623 #define saa7164_writeb(reg, value) writel((value), dev->bmmio + (reg)) 624 625