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drm/i915/backlight: Take luminance_set into account for VESA backlight

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When deciding what functions to enable to help control backlight we
used to only check aux_enable. Now with PANEL_LUMINANCE_OVERRIDE in
picture we need to take care that we do not enable PWM function if
luminance_set is set.

Closes: https://gitlab.freedesktop.org/drm/i915/kernel/-/issues/15671
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Reviewed-by: Arun R Murthy <arun.r.murthy@intel.com>
Link: https://patch.msgid.link/20260302040613.3324049-4-suraj.kandpal@intel.com
This commit is contained in:
Suraj Kandpal 2026-03-02 09:36:08 +05:30
parent c15a236644
commit 79e870c86d
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
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@ -486,7 +486,8 @@ intel_dp_aux_vesa_enable_backlight(const struct intel_crtc_state *crtc_state,
struct intel_panel *panel = &connector->panel;
struct intel_dp *intel_dp = enc_to_intel_dp(connector->encoder);
if (!panel->backlight.edp.vesa.info.aux_enable) {
if (!(panel->backlight.edp.vesa.info.aux_enable ||
panel->backlight.edp.vesa.info.luminance_set)) {
u32 pwm_level;
if (!panel->backlight.edp.vesa.info.aux_set)