[linux-2.6-block.git] / include / acpi / video.h

#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

enum acpi_backlight_type {
	acpi_backlight_undef = -1,
	acpi_backlight_none = 0,
	acpi_backlight_video,
	acpi_backlight_vendor,
	acpi_backlight_native,
};

#if IS_ENABLED(CONFIG_ACPI_VIDEO)
extern int acpi_video_register(void);
extern void acpi_video_unregister(void);
extern int acpi_video_get_edid(struct acpi_device *device, int type,
			       int device_id, void **edid);
extern enum acpi_backlight_type acpi_video_get_backlight_type(void);
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);
#else
static inline int acpi_video_register(void) { return 0; }
static inline void acpi_video_unregister(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 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
Commit	Line	Data
74a365b3 MG	1	#ifndef __ACPI_VIDEO_H
	2	#define __ACPI_VIDEO_H
	3
b72512ed	4	#include <linux/errno.h> /* for ENODEV */
90b066b1	5	#include <linux/types.h> /* for bool */
b72512ed	6
05950094 AL	7	struct acpi_video_brightness_flags {
	8	u8 _BCL_no_ac_battery_levels:1; /* no AC/Battery levels in _BCL */
	9	u8 _BCL_reversed:1; /* _BCL package is in a reversed order */
	10	u8 _BQC_use_index:1; /* _BQC returns an index value */
	11	};
	12
	13	struct acpi_video_device_brightness {
	14	int curr;
	15	int count;
	16	int *levels;
	17	struct acpi_video_brightness_flags flags;
	18	};
	19
b72512ed CW	20	struct acpi_device;
b72512ed CW	21
f5a3d0c4 MG	22	#define ACPI_VIDEO_CLASS "video"
f5a3d0c4 MG	23
e92a7162 MG	24	#define ACPI_VIDEO_DISPLAY_CRT 1
	25	#define ACPI_VIDEO_DISPLAY_TV 2
	26	#define ACPI_VIDEO_DISPLAY_DVI 3
	27	#define ACPI_VIDEO_DISPLAY_LCD 4
	28
	29	#define ACPI_VIDEO_DISPLAY_LEGACY_MONITOR 0x0100
	30	#define ACPI_VIDEO_DISPLAY_LEGACY_PANEL 0x0110
	31	#define ACPI_VIDEO_DISPLAY_LEGACY_TV 0x0200
	32
87521e16 HG	33	enum acpi_backlight_type {
	34	acpi_backlight_undef = -1,
	35	acpi_backlight_none = 0,
	36	acpi_backlight_video,
	37	acpi_backlight_vendor,
	38	acpi_backlight_native,
	39	};
	40
bcb2b0b2	41	#if IS_ENABLED(CONFIG_ACPI_VIDEO)
8e5c2b77	42	extern int acpi_video_register(void);
86e437f0	43	extern void acpi_video_unregister(void);
e92a7162 MG	44	extern int acpi_video_get_edid(struct acpi_device *device, int type,
e92a7162 MG	45	int device_id, void **edid);
87521e16 HG	46	extern enum acpi_backlight_type acpi_video_get_backlight_type(void);
87521e16 HG	47	extern void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type);
382d1163 HG	48	/*
	49	* Note: The value returned by acpi_video_handles_brightness_key_presses()
	50	* may change over time and should not be cached.
	51	*/
90b066b1	52	extern bool acpi_video_handles_brightness_key_presses(void);
05950094	53	extern int acpi_video_get_levels(struct acpi_device *device,
9f9cd7ee AL	54	struct acpi_video_device_brightness **dev_br,
9f9cd7ee AL	55	int *pmax_level);
74a365b3 MG	56	#else
74a365b3 MG	57	static inline int acpi_video_register(void) { return 0; }
86e437f0	58	static inline void acpi_video_unregister(void) { return; }
e92a7162 MG	59	static inline int acpi_video_get_edid(struct acpi_device *device, int type,
	60	int device_id, void **edid)
	61	{
	62	return -ENODEV;
	63	}
87521e16 HG	64	static inline enum acpi_backlight_type acpi_video_get_backlight_type(void)
	65	{
	66	return acpi_backlight_vendor;
	67	}
eddda195	68	static inline void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type)
87521e16 HG	69	{
87521e16 HG	70	}
90b066b1 HG	71	static inline bool acpi_video_handles_brightness_key_presses(void)
	72	{
	73	return false;
	74	}
e4f35c13	75	static inline int acpi_video_get_levels(struct acpi_device *device,
9f9cd7ee AL	76	struct acpi_video_device_brightness **dev_br,
9f9cd7ee AL	77	int *pmax_level)
05950094 AL	78	{
	79	return -ENODEV;
	80	}
74a365b3 MG	81	#endif
	82
	83	#endif