1 /* SPDX-License-Identifier: GPL-2.0 */ 2 #ifndef _LINUX_MISCDEVICE_H 3 #define _LINUX_MISCDEVICE_H 4 #include <linux/major.h> 5 #include <linux/list.h> 6 #include <linux/types.h> 7 #include <linux/device.h> 8 9 /* 10 * These allocations are managed by device@lanana.org. If you need 11 * an entry that is not assigned here, it can be moved and 12 * reassigned or dynamically set if a fixed value is not justified. 13 */ 14 15 #define PSMOUSE_MINOR 1 16 #define MS_BUSMOUSE_MINOR 2 /* unused */ 17 #define ATIXL_BUSMOUSE_MINOR 3 /* unused */ 18 /*#define AMIGAMOUSE_MINOR 4 FIXME OBSOLETE */ 19 #define ATARIMOUSE_MINOR 5 /* unused */ 20 #define SUN_MOUSE_MINOR 6 /* unused */ 21 #define APOLLO_MOUSE_MINOR 7 /* unused */ 22 #define PC110PAD_MINOR 9 /* unused */ 23 /*#define ADB_MOUSE_MINOR 10 FIXME OBSOLETE */ 24 #define WATCHDOG_MINOR 130 /* Watchdog timer */ 25 #define TEMP_MINOR 131 /* Temperature Sensor */ 26 #define APM_MINOR_DEV 134 27 #define RTC_MINOR 135 28 /*#define EFI_RTC_MINOR 136 was EFI Time services */ 29 #define VHCI_MINOR 137 30 #define SUN_OPENPROM_MINOR 139 31 #define DMAPI_MINOR 140 /* unused */ 32 #define NVRAM_MINOR 144 33 #define SBUS_FLASH_MINOR 152 34 #define SGI_MMTIMER 153 35 #define PMU_MINOR 154 36 #define STORE_QUEUE_MINOR 155 /* unused */ 37 #define LCD_MINOR 156 38 #define AC_MINOR 157 39 #define BUTTON_MINOR 158 /* Major 10, Minor 158, /dev/nwbutton */ 40 #define NWFLASH_MINOR 160 /* MAJOR is 10 - miscdevice */ 41 #define ENVCTRL_MINOR 162 42 #define I2O_MINOR 166 43 #define UCTRL_MINOR 174 44 #define AGPGART_MINOR 175 45 #define TOSH_MINOR_DEV 181 46 #define HWRNG_MINOR 183 47 /*#define MICROCODE_MINOR 184 unused */ 48 #define KEYPAD_MINOR 185 49 #define IRNET_MINOR 187 50 #define D7S_MINOR 193 51 #define VFIO_MINOR 196 52 #define PXA3XX_GCU_MINOR 197 53 #define TUN_MINOR 200 54 #define CUSE_MINOR 203 55 #define MPT_MINOR 220 56 #define MPT2SAS_MINOR 221 57 #define MPT3SAS_MINOR 222 58 #define UINPUT_MINOR 223 59 #define MISC_MCELOG_MINOR 227 60 #define HPET_MINOR 228 61 #define FUSE_MINOR 229 62 #define SNAPSHOT_MINOR 231 63 #define KVM_MINOR 232 64 #define BTRFS_MINOR 234 65 #define AUTOFS_MINOR 235 66 #define MAPPER_CTRL_MINOR 236 67 #define LOOP_CTRL_MINOR 237 68 #define VHOST_NET_MINOR 238 69 #define UHID_MINOR 239 70 #define USERIO_MINOR 240 71 #define VHOST_VSOCK_MINOR 241 72 #define EISA_EEPROM_MINOR 241 73 #define RFKILL_MINOR 242 74 75 /* 76 * Misc char device minor code space division related to below macro: 77 * 78 * < 255 : Fixed minor code 79 * == 255 : Indicator to request dynamic minor code 80 * > 255 : Dynamic minor code requested, 1048320 minor codes totally. 81 */ 82 #define MISC_DYNAMIC_MINOR 255 83 84 struct miscdevice { 85 int minor; 86 const char *name; 87 const struct file_operations *fops; 88 struct list_head list; 89 struct device *parent; 90 struct device *this_device; 91 const struct attribute_group **groups; 92 const char *nodename; 93 umode_t mode; 94 }; 95 96 extern int misc_register(struct miscdevice *misc); 97 extern void misc_deregister(struct miscdevice *misc); 98 99 /* 100 * Helper macro for drivers that don't do anything special in the initcall. 101 * This helps to eliminate boilerplate code. 102 */ 103 #define builtin_misc_device(__misc_device) \ 104 builtin_driver(__misc_device, misc_register) 105 106 /* 107 * Helper macro for drivers that don't do anything special in module init / exit 108 * call. This helps to eliminate boilerplate code. 109 */ 110 #define module_misc_device(__misc_device) \ 111 module_driver(__misc_device, misc_register, misc_deregister) 112 113 #define MODULE_ALIAS_MISCDEV(minor) \ 114 MODULE_ALIAS("char-major-" __stringify(MISC_MAJOR) \ 115 "-" __stringify(minor)) 116 #endif 117