github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-09-28 12:02:03 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

drm/i915/backlight: Modify condition to use panel luminance

Browse Source 
According to our internal spec we need to now check if both
panel luminance and smooth brightness are available in panel for
us to be able to change brightness using luminance value.

--v2
-Add Fixes tag [Ankit]

Fixes: 6448149792 ("drm/i915/backlight: Check Luminance based brightness control for VESA")
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy@intel.com>
Link: https://lore.kernel.org/r/20250411060235.2732060-3-suraj.kandpal@intel.com
This commit is contained in:
Suraj Kandpal 2025-04-11 11:32:36 +05:30
parent cc2308ebbb
commit 6acbf71463
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
View File

@ -663,7 +663,8 @@ intel_dp_aux_supports_vesa_backlight(struct intel_connector *connector)
struct intel_dp *intel_dp = intel_attached_dp(connector);
struct intel_panel *panel = &connector->panel;
if ((intel_dp->edp_dpcd[3] & DP_EDP_PANEL_LUMINANCE_CONTROL_CAPABLE)) {
if ((intel_dp->edp_dpcd[3] & DP_EDP_PANEL_LUMINANCE_CONTROL_CAPABLE) &&
(intel_dp->edp_dpcd[3] & DP_EDP_SMOOTH_BRIGHTNESS_CAPABLE)) {
drm_dbg_kms(display->drm,
"[CONNECTOR:%d:%s] AUX Luminance Based Backlight Control Supported!\n",
connector->base.base.id, connector->base.name);