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| author | Alex Deucher <alexander.deucher@amd.com> | 2018-11-06 16:06:32 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2018-11-06 16:23:58 -0500 |
| commit | 63088da9472854408ae5d7c47bd011daf9e1a81b (patch) | |
| tree | 8dc598df6e670f37ce81f6ef38ff594fc278ff9a /drivers/gpu | |
| parent | 86a484bda787d542d4a968bd7742bcf844c8adb2 (diff) | |
| download | linux-stable-63088da9472854408ae5d7c47bd011daf9e1a81b.tar.gz linux-stable-63088da9472854408ae5d7c47bd011daf9e1a81b.tar.bz2 linux-stable-63088da9472854408ae5d7c47bd011daf9e1a81b.zip | |
Revert "drm/amd/display: set backlight level limit to 1"
This reverts commit 0cafc82fae41531b0162150f9a97f2c74f97118f.
This breaks some apps that assume 0 is minimum brightness.
Revert for 4.20. This is fixed properly for drm-next/4.21 in:
"drm/amd: Don't fail on backlight = 0"
However, that patch depends on more extensive changes to the
backlight interface which are too invasive for -fixes.
Fixes: Bugzilla: https://bugs.freedesktop.org/108668
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 7 |
1 files changed, 0 insertions, 7 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 b0df6dc9a775..e224f23e2215 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -1524,13 +1524,6 @@ static int amdgpu_dm_backlight_update_status(struct backlight_device *bd) { struct amdgpu_display_manager *dm = bl_get_data(bd); - /* - * PWM interperts 0 as 100% rather than 0% because of HW - * limitation for level 0.So limiting minimum brightness level - * to 1. - */ - if (bd->props.brightness < 1) - return 1; if (dc_link_set_backlight_level(dm->backlight_link, bd->props.brightness, 0, 0)) return 0; |