diff options
| author | Jani Nikula <jani.nikula@intel.com> | 2017-05-31 11:33:55 +0300 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2017-08-07 13:39:04 +0300 |
| commit | 1e2ba788787c86f527eca6ffd9adb97d691a810e (patch) | |
| tree | 7f6699ce368b5e2e5eb505735a7fc1b677c086a5 /drivers/gpu/drm/i915 | |
| parent | cd82f37a9ddaaafb33d8bc3f44857edbad5d52bf (diff) | |
drm/i915: fix backlight invert for non-zero minimum brightness
When we started following the backlight minimum brightness in
6dda730e55f4 ("drm/i915: respect the VBT minimum backlight brightness")
we overlooked the brightness invert quirk. Even if we invert the
brightness, we need to take the min limit into account. We probably
missed this because the invert has only been required on gen4 for proper
operation.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101127
Fixes: 6dda730e55f4 ("drm/i915: respect the VBT minimum backlight brightness")
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170531083355.7898-1-jani.nikula@intel.com
(cherry picked from commit e9d7486eac949f2a8d121657e536c8abdd4ea088)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_panel.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c index 96c2cbd81869..593349be8b9d 100644 --- a/drivers/gpu/drm/i915/intel_panel.c +++ b/drivers/gpu/drm/i915/intel_panel.c @@ -469,7 +469,7 @@ static u32 intel_panel_compute_brightness(struct intel_connector *connector, if (i915.invert_brightness > 0 || dev_priv->quirks & QUIRK_INVERT_BRIGHTNESS) { - return panel->backlight.max - val; + return panel->backlight.max - val + panel->backlight.min; } return val; |