include/linux/miscdevice.h

   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
  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 MWAVE_MINOR             219     /* ACP/Mwave Modem */
  56 #define MPT_MINOR               220
  57 #define MPT2SAS_MINOR           221
  58 #define MPT3SAS_MINOR           222
  59 #define UINPUT_MINOR            223
  60 #define MISC_MCELOG_MINOR       227
  61 #define HPET_MINOR              228
  62 #define FUSE_MINOR              229
  63 #define SNAPSHOT_MINOR          231
  64 #define KVM_MINOR               232
  65 #define BTRFS_MINOR             234
  66 #define AUTOFS_MINOR            235
  67 #define MAPPER_CTRL_MINOR       236
  68 #define LOOP_CTRL_MINOR         237
  69 #define VHOST_NET_MINOR         238
  70 #define UHID_MINOR              239
  71 #define USERIO_MINOR            240
  72 #define VHOST_VSOCK_MINOR       241
  73 #define RFKILL_MINOR            242
  74 #define MISC_DYNAMIC_MINOR      255
  75
  76 struct device;
  77 struct attribute_group;
  78
  79 struct miscdevice  {
  80         int minor;
  81         const char *name;
  82         const struct file_operations *fops;
  83         struct list_head list;
  84         struct device *parent;
  85         struct device *this_device;
  86         const struct attribute_group **groups;
  87         const char *nodename;
  88         umode_t mode;
  89 };
  90
  91 extern int misc_register(struct miscdevice *misc);
  92 extern void misc_deregister(struct miscdevice *misc);
  93
  94 /*
  95  * Helper macro for drivers that don't do anything special in the initcall.
  96  * This helps to eliminate boilerplate code.
  97  */
  98 #define builtin_misc_device(__misc_device) \
  99         builtin_driver(__misc_device, misc_register)
 100
 101 /*
 102  * Helper macro for drivers that don't do anything special in module init / exit
 103  * call. This helps to eliminate boilerplate code.
 104  */
 105 #define module_misc_device(__misc_device) \
 106         module_driver(__misc_device, misc_register, misc_deregister)
 107
 108 #define MODULE_ALIAS_MISCDEV(minor)                             \
 109         MODULE_ALIAS("char-major-" __stringify(MISC_MAJOR)      \
 110         "-" __stringify(minor))
 111 #endif