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/* 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,
};
#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);
extern void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type);
/*
* 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);
}
static inline bool acpi_video_backlight_use_native(void)
{
return __acpi_video_get_backlight_type(true, NULL) == acpi_backlight_native;
}
#else
static 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 void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type)
{
}
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
| Name | Type | Size | Permission | Actions |
|---|---|---|---|---|
| platform | Folder | 0755 |
|
|
| acbuffer.h | File | 8.92 KB | 0644 |
|
| acconfig.h | File | 7.45 KB | 0644 |
|
| acexcep.h | File | 16.94 KB | 0644 |
|
| acnames.h | File | 2.22 KB | 0644 |
|
| acoutput.h | File | 16.37 KB | 0644 |
|
| acpi.h | File | 1.33 KB | 0644 |
|
| acpi_bus.h | File | 28.96 KB | 0644 |
|
| acpi_drivers.h | File | 2.65 KB | 0644 |
|
| acpi_io.h | File | 723 B | 0644 |
|
| acpi_lpat.h | File | 1.16 KB | 0644 |
|
| acpi_numa.h | File | 944 B | 0644 |
|
| acpiosxf.h | File | 11.35 KB | 0644 |
|
| acpixf.h | File | 31.19 KB | 0644 |
|
| acrestyp.h | File | 19.5 KB | 0644 |
|
| actbl.h | File | 18.37 KB | 0644 |
|
| actbl1.h | File | 47.02 KB | 0644 |
|
| actbl2.h | File | 67.51 KB | 0644 |
|
| actbl3.h | File | 22.06 KB | 0644 |
|
| actypes.h | File | 42.19 KB | 0644 |
|
| acuuid.h | File | 3.59 KB | 0644 |
|
| apei.h | File | 1.4 KB | 0644 |
|
| battery.h | File | 594 B | 0644 |
|
| button.h | File | 401 B | 0644 |
|
| cppc_acpi.h | File | 6.11 KB | 0644 |
|
| ghes.h | File | 3.56 KB | 0644 |
|
| hed.h | File | 370 B | 0644 |
|
| nfit.h | File | 351 B | 0644 |
|
| nhlt.h | File | 5.3 KB | 0644 |
|
| pcc.h | File | 807 B | 0644 |
|
| proc_cap_intel.h | File | 1.35 KB | 0644 |
|
| processor.h | File | 12.22 KB | 0644 |
|
| reboot.h | File | 201 B | 0644 |
|
| video.h | File | 3.32 KB | 0644 |
|