backlight.h File Reference

#include <linux/device.h>
#include <linux/mutex.h>
#include <linux/notifier.h>

Go to the source code of this file.

Data Structures
struct	backlight_ops
struct	backlight_properties
struct	backlight_device
struct	generic_bl_info

Macros
#define	BL_CORE_SUSPENDRESUME   (1 << 0)
#define	BL_CORE_SUSPENDED   (1 << 0) /* backlight is suspended */
#define	BL_CORE_FBBLANK   (1 << 1) /* backlight is under an fb blank event */
#define	BL_CORE_DRIVER4   (1 << 28) /* reserved for driver specific use */
#define	BL_CORE_DRIVER3   (1 << 29) /* reserved for driver specific use */
#define	BL_CORE_DRIVER2   (1 << 30) /* reserved for driver specific use */
#define	BL_CORE_DRIVER1   (1 << 31) /* reserved for driver specific use */
#define	to_backlight_device(obj)   container_of(obj, struct backlight_device, dev)

Enumerations
enum	backlight_update_reason { BACKLIGHT_UPDATE_HOTKEY, BACKLIGHT_UPDATE_SYSFS }
enum	backlight_type { BACKLIGHT_RAW = 1, BACKLIGHT_PLATFORM, BACKLIGHT_FIRMWARE, BACKLIGHT_TYPE_MAX }

Functions
struct backlight_device *	backlight_device_register (const char *name, struct device *dev, void *devdata, const struct backlight_ops *ops, const struct backlight_properties *props)
void	backlight_device_unregister (struct backlight_device *bd)
void	backlight_force_update (struct backlight_device *bd, enum backlight_update_reason reason)

Macro Definition Documentation

#define BL_CORE_DRIVER1   (1 << 31) /* reserved for driver specific use */

Definition at line 83 of file backlight.h.

#define BL_CORE_DRIVER2   (1 << 30) /* reserved for driver specific use */

Definition at line 82 of file backlight.h.

#define BL_CORE_DRIVER3   (1 << 29) /* reserved for driver specific use */

Definition at line 81 of file backlight.h.

#define BL_CORE_DRIVER4   (1 << 28) /* reserved for driver specific use */

Definition at line 80 of file backlight.h.

#define BL_CORE_FBBLANK   (1 << 1) /* backlight is under an fb blank event */

Definition at line 79 of file backlight.h.

#define BL_CORE_SUSPENDED   (1 << 0) /* backlight is suspended */

Definition at line 78 of file backlight.h.

#define BL_CORE_SUSPENDRESUME   (1 << 0)

Definition at line 48 of file backlight.h.

#define to_backlight_device

(

obj

)

container_of(obj, struct backlight_device, dev)

Definition at line 121 of file backlight.h.

Enumeration Type Documentation

enum backlight_type

Enumerator:

BACKLIGHT_RAW
BACKLIGHT_PLATFORM
BACKLIGHT_FIRMWARE
BACKLIGHT_TYPE_MAX

Definition at line 35 of file backlight.h.

enum backlight_update_reason

Enumerator:

BACKLIGHT_UPDATE_HOTKEY
BACKLIGHT_UPDATE_SYSFS

Definition at line 30 of file backlight.h.

Function Documentation

struct backlight_device* backlight_device_register ( const char *  name, struct device *  dev, void *  devdata, const struct backlight_ops *  ops, const struct backlight_properties *  props  )

read

Definition at line 288 of file backlight.c.

void backlight_device_unregister

(

struct backlight_device *

bd

)

backlight_device_unregister - unregisters a backlight device object. : the backlight device object to be unregistered and freed.

Unregisters a previously registered via backlight_device_register object.

Definition at line 353 of file backlight.c.

void backlight_force_update	(	struct backlight_device *	bd,
		enum backlight_update_reason	reason
	)

backlight_force_update - tell the backlight subsystem that hardware state has changed : the backlight device to update

Updates the internal state of the backlight in response to a hardware event, and generate a uevent to notify userspace

Definition at line 264 of file backlight.c.