LXR linux/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 use an
  11 *      entry that is not in assigned your entry may well be moved and
  12 *      reassigned, or set dynamic 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     /* 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 SGI_MMTIMER             153
  34#define STORE_QUEUE_MINOR       155     /* unused */
  35#define I2O_MINOR               166
  36#define AGPGART_MINOR           175
  37#define HWRNG_MINOR             183
  38#define MICROCODE_MINOR         184
  39#define IRNET_MINOR             187
  40#define D7S_MINOR               193
  41#define VFIO_MINOR              196
  42#define TUN_MINOR               200
  43#define CUSE_MINOR              203
  44#define MWAVE_MINOR             219     /* ACP/Mwave Modem */
  45#define MPT_MINOR               220
  46#define MPT2SAS_MINOR           221
  47#define MPT3SAS_MINOR           222
  48#define UINPUT_MINOR            223
  49#define MISC_MCELOG_MINOR       227
  50#define HPET_MINOR              228
  51#define FUSE_MINOR              229
  52#define KVM_MINOR               232
  53#define BTRFS_MINOR             234
  54#define AUTOFS_MINOR            235
  55#define MAPPER_CTRL_MINOR       236
  56#define LOOP_CTRL_MINOR         237
  57#define VHOST_NET_MINOR         238
  58#define UHID_MINOR              239
  59#define USERIO_MINOR            240
  60#define VHOST_VSOCK_MINOR       241
  61#define RFKILL_MINOR            242
  62#define MISC_DYNAMIC_MINOR      255
  63
  64struct device;
  65struct attribute_group;
  66
  67struct miscdevice  {
  68        int minor;
  69        const char *name;
  70        const struct file_operations *fops;
  71        struct list_head list;
  72        struct device *parent;
  73        struct device *this_device;
  74        const struct attribute_group **groups;
  75        const char *nodename;
  76        umode_t mode;
  77};
  78
  79extern int misc_register(struct miscdevice *misc);
  80extern void misc_deregister(struct miscdevice *misc);
  81
  82/*
  83 * Helper macro for drivers that don't do anything special in the initcall.
  84 * This helps in eleminating of boilerplate code.
  85 */
  86#define builtin_misc_device(__misc_device) \
  87        builtin_driver(__misc_device, misc_register)
  88
  89/*
  90 * Helper macro for drivers that don't do anything special in module init / exit
  91 * call. This helps in eleminating of boilerplate code.
  92 */
  93#define module_misc_device(__misc_device) \
  94        module_driver(__misc_device, misc_register, misc_deregister)
  95
  96#define MODULE_ALIAS_MISCDEV(minor)                             \
  97        MODULE_ALIAS("char-major-" __stringify(MISC_MAJOR)      \
  98        "-" __stringify(minor))
  99#endif
 100