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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122/* SPDX-License-Identifier: GPL-2.0 */#ifndef __ACPI_VIDEO_H#define __ACPI_VIDEO_H
#include <linux/errno.h> /* for ENODEV */#include <linux/types.h> /* for bool */
struct acpi_video_brightness_flags { u8 _BCL_no_ac_battery_levels:1; /* no AC/Battery levels in _BCL */ u8 _BCL_reversed:1; /* _BCL package is in a reversed order */ u8 _BQC_use_index:1; /* _BQC returns an index value */};
struct acpi_video_device_brightness { int curr; int count; int *levels; struct acpi_video_brightness_flags flags;};
struct acpi_device;
#define ACPI_VIDEO_CLASS "video"
#define ACPI_VIDEO_DISPLAY_CRT 1#define ACPI_VIDEO_DISPLAY_TV 2#define ACPI_VIDEO_DISPLAY_DVI 3#define ACPI_VIDEO_DISPLAY_LCD 4
#define ACPI_VIDEO_DISPLAY_LEGACY_MONITOR 0x0100#define ACPI_VIDEO_DISPLAY_LEGACY_PANEL 0x0110#define ACPI_VIDEO_DISPLAY_LEGACY_TV 0x0200
#define ACPI_VIDEO_NOTIFY_SWITCH 0x80#define ACPI_VIDEO_NOTIFY_PROBE 0x81#define ACPI_VIDEO_NOTIFY_CYCLE 0x82#define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83#define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84#define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x85#define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87#define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x88#define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x89
enum acpi_backlight_type { acpi_backlight_undef = -1, acpi_backlight_none = 0, acpi_backlight_video, acpi_backlight_vendor, acpi_backlight_native, acpi_backlight_nvidia_wmi_ec, acpi_backlight_apple_gmux, acpi_backlight_dell_uart,};
#if IS_ENABLED(CONFIG_ACPI_VIDEO)extern int acpi_video_register(void);extern void acpi_video_unregister(void);extern void acpi_video_register_backlight(void);extern int acpi_video_get_edid(struct acpi_device *device, int type, int device_id, void **edid);/* * Note: The value returned by acpi_video_handles_brightness_key_presses() * may change over time and should not be cached. */extern bool acpi_video_handles_brightness_key_presses(void);extern int acpi_video_get_levels(struct acpi_device *device, struct acpi_video_device_brightness **dev_br, int *pmax_level);
extern enum acpi_backlight_type __acpi_video_get_backlight_type(bool native, bool *auto_detect);
static inline enum acpi_backlight_type acpi_video_get_backlight_type(void){ return __acpi_video_get_backlight_type(false, NULL);}
/* * This function MUST only be called by GPU drivers to check if the driver * should register a backlight class device. This function not only checks * if a GPU native backlight device should be registered it *also* tells * the ACPI video-detect code that native GPU backlight control is available. * Therefor calling this from any place other then the GPU driver is wrong! * To check if GPU native backlight control is used in other places instead use: * if (acpi_video_get_backlight_type() == acpi_backlight_native) { ... } */static inline bool acpi_video_backlight_use_native(void){ return __acpi_video_get_backlight_type(true, NULL) == acpi_backlight_native;}#elsestatic inline int acpi_video_register(void) { return -ENODEV; }static inline void acpi_video_unregister(void) { return; }static inline void acpi_video_register_backlight(void) { return; }static inline int acpi_video_get_edid(struct acpi_device *device, int type, int device_id, void **edid){ return -ENODEV;}static inline enum acpi_backlight_type acpi_video_get_backlight_type(void){ return acpi_backlight_vendor;}static inline bool acpi_video_backlight_use_native(void){ return true;}static inline bool acpi_video_handles_brightness_key_presses(void){ return false;}static inline int acpi_video_get_levels(struct acpi_device *device, struct acpi_video_device_brightness **dev_br, int *pmax_level){ return -ENODEV;}#endif
#endif