From 02d17fd8c589a1864f492a2cc28a0d4083594482 Mon Sep 17 00:00:00 2001 From: Kai-Heng Feng Date: Wed, 9 Oct 2019 10:30:49 +0800 Subject: [PATCH] drm/amd/display: Restore backlight brightness after system resume commit bb264220d9316f6bd7c1fd84b8da398c93912931 upstream. Laptops with AMD APU doesn't restore display backlight brightness after system resume. This issue started when DC was introduced. Let's use BL_CORE_SUSPENDRESUME so the backlight core calls update_status callback after system resume to restore the backlight level. Tested on Dell Inspiron 3180 (Stoney Ridge) and Dell Latitude 5495 (Raven Ridge). Cc: Signed-off-by: Kai-Heng Feng Signed-off-by: Alex Deucher Signed-off-by: Greg Kroah-Hartman Signed-off-by: Yang Yingliang --- drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 221de241535a..3b07a316680c 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1462,6 +1462,7 @@ static int amdgpu_dm_backlight_get_brightness(struct backlight_device *bd) } static const struct backlight_ops amdgpu_dm_backlight_ops = { + .options = BL_CORE_SUSPENDRESUME, .get_brightness = amdgpu_dm_backlight_get_brightness, .update_status = amdgpu_dm_backlight_update_status, }; -- GitLab