diff options
Diffstat (limited to 'include/linux/backlight.h')
| -rw-r--r-- | include/linux/backlight.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/backlight.h b/include/linux/backlight.h index 5ffc6dd..237e090 100644 --- a/include/linux/backlight.h +++ b/include/linux/backlight.h @@ -55,10 +55,12 @@ struct backlight_ops { /* Check if given framebuffer device is the one bound to this backlight; return 0 if not, !=0 if it is. If NULL, backlight always matches the fb. */ int (*check_fb)(struct backlight_device *, struct fb_info *); + int (*set_dimming)(struct backlight_device *); }; /* This structure defines all the properties of a backlight */ struct backlight_properties { + bool dimming; /* Current User requested brightness (0 - max_brightness) */ int brightness; /* Maximal value for brightness (read-only) */ @@ -111,12 +113,20 @@ static inline void backlight_update_status(struct backlight_device *bd) mutex_unlock(&bd->update_lock); } +static inline void backlight_set_dimming(struct backlight_device *bd) +{ + if (bd->ops && bd->ops->set_dimming) + bd->ops->set_dimming(bd); +} + extern struct backlight_device *backlight_device_register(const char *name, struct device *dev, void *devdata, const struct backlight_ops *ops, const struct backlight_properties *props); extern void backlight_device_unregister(struct backlight_device *bd); extern void backlight_force_update(struct backlight_device *bd, enum backlight_update_reason reason); +extern int backlight_dimming_mode_register_client(struct notifier_block *nb); +extern int backlight_dimming_mode_unregister_client(struct notifier_block *nb); #define to_backlight_device(obj) container_of(obj, struct backlight_device, dev) |