diff options
| -rw-r--r-- | drivers/video/backlight/lcd.c | 10 | ||||
| -rw-r--r-- | include/linux/lcd.h | 10 |
2 files changed, 20 insertions, 0 deletions
diff --git a/drivers/video/backlight/lcd.c b/drivers/video/backlight/lcd.c index 79c1b0d609a8..1c298d5bf3af 100644 --- a/drivers/video/backlight/lcd.c +++ b/drivers/video/backlight/lcd.c @@ -32,6 +32,8 @@ static int fb_notifier_callback(struct notifier_block *self, case FB_EVENT_BLANK: case FB_EVENT_MODE_CHANGE: case FB_EVENT_MODE_CHANGE_ALL: + case FB_EARLY_EVENT_BLANK: + case FB_R_EARLY_EVENT_BLANK: break; default: return 0; @@ -46,6 +48,14 @@ static int fb_notifier_callback(struct notifier_block *self, if (event == FB_EVENT_BLANK) { if (ld->ops->set_power) ld->ops->set_power(ld, *(int *)evdata->data); + } else if (event == FB_EARLY_EVENT_BLANK) { + if (ld->ops->early_set_power) + ld->ops->early_set_power(ld, + *(int *)evdata->data); + } else if (event == FB_R_EARLY_EVENT_BLANK) { + if (ld->ops->r_early_set_power) + ld->ops->r_early_set_power(ld, + *(int *)evdata->data); } else { if (ld->ops->set_mode) ld->ops->set_mode(ld, evdata->data); diff --git a/include/linux/lcd.h b/include/linux/lcd.h index 8877123f2d6e..e00c3b0ebc6b 100644 --- a/include/linux/lcd.h +++ b/include/linux/lcd.h @@ -40,6 +40,16 @@ struct lcd_ops { /* Get the LCD panel power status (0: full on, 1..3: controller power on, flat panel power off, 4: full off), see FB_BLANK_XXX */ int (*get_power)(struct lcd_device *); + /* + * Enable or disable power to the LCD(0: on; 4: off, see FB_BLANK_XXX) + * and this callback would be called proir to fb driver's callback. + * + * P.S. note that if early_set_power is not NULL then early fb notifier + * would be registered. + */ + int (*early_set_power)(struct lcd_device *, int power); + /* revert the effects of the early blank event. */ + int (*r_early_set_power)(struct lcd_device *, int power); /* Enable or disable power to the LCD (0: on; 4: off, see FB_BLANK_XXX) */ int (*set_power)(struct lcd_device *, int power); /* Get the current contrast setting (0-max_contrast) */ |