From 79e870c86d30c6e2e1e3b68723158a8b1f0079eb Mon Sep 17 00:00:00 2001 From: Suraj Kandpal Date: Mon, 2 Mar 2026 09:36:08 +0530 Subject: [PATCH] drm/i915/backlight: Take luminance_set into account for VESA backlight 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 Reviewed-by: Arun R Murthy Link: https://patch.msgid.link/20260302040613.3324049-4-suraj.kandpal@intel.com --- drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c index ca3e6b8eb3ec..b72535f89382 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c +++ b/drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c @@ -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)