diff options
Diffstat (limited to 'include/linux/miscdevice.h')
| -rw-r--r-- | include/linux/miscdevice.h | 84 |
1 files changed, 66 insertions, 18 deletions
diff --git a/include/linux/miscdevice.h b/include/linux/miscdevice.h index 09c2300ddb37..7d0aa718499c 100644 --- a/include/linux/miscdevice.h +++ b/include/linux/miscdevice.h @@ -1,36 +1,57 @@ +/* SPDX-License-Identifier: GPL-2.0 */ #ifndef _LINUX_MISCDEVICE_H #define _LINUX_MISCDEVICE_H #include <linux/major.h> #include <linux/list.h> #include <linux/types.h> +#include <linux/device.h> /* - * These allocations are managed by device@lanana.org. If you use an - * entry that is not in assigned your entry may well be moved and - * reassigned, or set dynamic if a fixed value is not justified. + * These allocations are managed by device@lanana.org. If you need + * an entry that is not assigned here, it can be moved and + * reassigned or dynamically set if a fixed value is not justified. */ #define PSMOUSE_MINOR 1 -#define MS_BUSMOUSE_MINOR 2 -#define ATIXL_BUSMOUSE_MINOR 3 +#define MS_BUSMOUSE_MINOR 2 /* unused */ +#define ATIXL_BUSMOUSE_MINOR 3 /* unused */ /*#define AMIGAMOUSE_MINOR 4 FIXME OBSOLETE */ -#define ATARIMOUSE_MINOR 5 -#define SUN_MOUSE_MINOR 6 -#define APOLLO_MOUSE_MINOR 7 -#define PC110PAD_MINOR 9 +#define ATARIMOUSE_MINOR 5 /* unused */ +#define SUN_MOUSE_MINOR 6 /* unused */ +#define APOLLO_MOUSE_MINOR 7 /* unused */ +#define PC110PAD_MINOR 9 /* unused */ /*#define ADB_MOUSE_MINOR 10 FIXME OBSOLETE */ #define WATCHDOG_MINOR 130 /* Watchdog timer */ #define TEMP_MINOR 131 /* Temperature Sensor */ +#define APM_MINOR_DEV 134 #define RTC_MINOR 135 -#define EFI_RTC_MINOR 136 /* EFI Time services */ +/*#define EFI_RTC_MINOR 136 was EFI Time services */ +#define VHCI_MINOR 137 #define SUN_OPENPROM_MINOR 139 -#define DMAPI_MINOR 140 /* DMAPI */ +#define DMAPI_MINOR 140 /* unused */ #define NVRAM_MINOR 144 +#define SBUS_FLASH_MINOR 152 #define SGI_MMTIMER 153 -#define STORE_QUEUE_MINOR 155 +#define PMU_MINOR 154 +#define STORE_QUEUE_MINOR 155 /* unused */ +#define LCD_MINOR 156 +#define AC_MINOR 157 +#define BUTTON_MINOR 158 /* Major 10, Minor 158, /dev/nwbutton */ +#define NWFLASH_MINOR 160 /* MAJOR is 10 - miscdevice */ +#define ENVCTRL_MINOR 162 #define I2O_MINOR 166 -#define MICROCODE_MINOR 184 +#define UCTRL_MINOR 174 +#define AGPGART_MINOR 175 +#define TOSH_MINOR_DEV 181 +#define HWRNG_MINOR 183 +/*#define MICROCODE_MINOR 184 unused */ +#define KEYPAD_MINOR 185 +#define IRNET_MINOR 187 +#define D7S_MINOR 193 +#define VFIO_MINOR 196 +#define PXA3XX_GCU_MINOR 197 #define TUN_MINOR 200 +#define CUSE_MINOR 203 #define MWAVE_MINOR 219 /* ACP/Mwave Modem */ #define MPT_MINOR 220 #define MPT2SAS_MINOR 221 @@ -39,29 +60,56 @@ #define MISC_MCELOG_MINOR 227 #define HPET_MINOR 228 #define FUSE_MINOR 229 +#define SNAPSHOT_MINOR 231 #define KVM_MINOR 232 #define BTRFS_MINOR 234 #define AUTOFS_MINOR 235 #define MAPPER_CTRL_MINOR 236 #define LOOP_CTRL_MINOR 237 #define VHOST_NET_MINOR 238 -#define MISC_DYNAMIC_MINOR 255 +#define UHID_MINOR 239 +#define USERIO_MINOR 240 +#define VHOST_VSOCK_MINOR 241 +#define EISA_EEPROM_MINOR 241 +#define RFKILL_MINOR 242 -struct device; +/* + * Misc char device minor code space division related to below macro: + * + * < 255 : Fixed minor code + * == 255 : Indicator to request dynamic minor code + * > 255 : Dynamic minor code requested, 1048320 minor codes totally. + */ +#define MISC_DYNAMIC_MINOR 255 -struct miscdevice { +struct miscdevice { int minor; const char *name; const struct file_operations *fops; struct list_head list; struct device *parent; struct device *this_device; + const struct attribute_group **groups; const char *nodename; umode_t mode; }; -extern int misc_register(struct miscdevice * misc); -extern int misc_deregister(struct miscdevice *misc); +extern int misc_register(struct miscdevice *misc); +extern void misc_deregister(struct miscdevice *misc); + +/* + * Helper macro for drivers that don't do anything special in the initcall. + * This helps to eliminate boilerplate code. + */ +#define builtin_misc_device(__misc_device) \ + builtin_driver(__misc_device, misc_register) + +/* + * Helper macro for drivers that don't do anything special in module init / exit + * call. This helps to eliminate boilerplate code. + */ +#define module_misc_device(__misc_device) \ + module_driver(__misc_device, misc_register, misc_deregister) #define MODULE_ALIAS_MISCDEV(minor) \ MODULE_ALIAS("char-major-" __stringify(MISC_MAJOR) \ |