diff options
Diffstat (limited to 'drivers/video/fbdev/core/fb_backlight.c')
| -rw-r--r-- | drivers/video/fbdev/core/fb_backlight.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/video/fbdev/core/fb_backlight.c b/drivers/video/fbdev/core/fb_backlight.c index e2d3b3adc870..dbed9696f4c5 100644 --- a/drivers/video/fbdev/core/fb_backlight.c +++ b/drivers/video/fbdev/core/fb_backlight.c @@ -1,5 +1,6 @@ // SPDX-License-Identifier: GPL-2.0-or-later +#include <linux/backlight.h> #include <linux/export.h> #include <linux/fb.h> #include <linux/mutex.h> @@ -30,4 +31,21 @@ void fb_bl_default_curve(struct fb_info *fb_info, u8 off, u8 min, u8 max) mutex_unlock(&fb_info->bl_curve_mutex); } EXPORT_SYMBOL_GPL(fb_bl_default_curve); + +struct backlight_device *fb_bl_device(struct fb_info *info) +{ + return info->bl_dev; +} +EXPORT_SYMBOL(fb_bl_device); + +void fb_bl_notify_blank(struct fb_info *info, int old_blank) +{ + bool on = info->blank == FB_BLANK_UNBLANK; + bool prev_on = old_blank == FB_BLANK_UNBLANK; + + if (info->bl_dev) + backlight_notify_blank(info->bl_dev, info->device, on, prev_on); + else + backlight_notify_blank_all(info->device, on, prev_on); +} #endif |