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drm/i915/backlight: Honor VESA eDP backlight luminance control capability

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The VESA AUX backlight fails to be enable luminance based backlight
mainpulation becaused luminance_set is false by default.
Fix it by using luminance support control capabitliy.

Fixes: e13af5166a ("drm/i915/backlight: Use drm helper to initialize edp backlight")
Signed-off-by: Aaron Ma <aaron.ma@canonical.com>
Reviewed-by: Suraj Kandpal <suraj.kandpal@intel.com>
Signed-off-by: Suraj Kandpal <suraj.kandpal@intel.com>
Link: https://lore.kernel.org/r/20250823121647.275834-1-aaron.ma@canonical.com
(cherry picked from commit 72136efb87)
Signed-off-by: Tvrtko Ursulin <tursulin@ursulin.net>
This commit is contained in:
Aaron Ma 2025-08-23 20:16:47 +08:00 • committed by Tvrtko Ursulin
parent f83ec76bf2
commit 35e526398b
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c
View file

@ -546,7 +546,7 @@ static int intel_dp_aux_vesa_setup_backlight(struct intel_connector *connector,
luminance_range->max_luminance,
panel->vbt.backlight.pwm_freq_hz,
intel_dp->edp_dpcd, &current_level, &current_mode,
false);
panel->backlight.edp.vesa.luminance_control_support);
if (ret < 0)
return ret;