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| author | Kai-Heng Feng <kai.heng.feng@canonical.com> | 2019-09-02 16:33:42 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-05 13:14:16 +0200 |
| commit | cb2daf3e8cef34dfcccf390e64e7f7747aaf48f2 (patch) | |
| tree | 4eca5fdbfe5989380e211e13dea9ec7fa25695b4 /drivers/gpu | |
| parent | 5bd1ab51d4c7b9b1eda9e125a386ec6b7596ffe5 (diff) | |
| download | linux-stable-cb2daf3e8cef34dfcccf390e64e7f7747aaf48f2.tar.gz linux-stable-cb2daf3e8cef34dfcccf390e64e7f7747aaf48f2.tar.bz2 linux-stable-cb2daf3e8cef34dfcccf390e64e7f7747aaf48f2.zip | |
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: <stable@vger.kernel.org>
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 |
1 files changed, 1 insertions, 0 deletions
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 279ced1d64ed..6a743aaf2669 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1958,6 +1958,7 @@ 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, }; |