@@ -334,8 +334,7 @@ intel_dp_aux_display_control_capable(struct intel_connector *connector)
* the panel can support backlight control over the aux channel
*/
if (intel_dp->edp_dpcd[1] & DP_EDP_TCON_BACKLIGHT_ADJUSTMENT_CAP &&
- (intel_dp->edp_dpcd[2] & DP_EDP_BACKLIGHT_BRIGHTNESS_AUX_SET_CAP) &&
- !(intel_dp->edp_dpcd[2] & DP_EDP_BACKLIGHT_BRIGHTNESS_PWM_PIN_CAP)) {
+ (intel_dp->edp_dpcd[2] & DP_EDP_BACKLIGHT_BRIGHTNESS_AUX_SET_CAP)) {
drm_dbg_kms(&i915->drm, "AUX Backlight Control Supported!\n");
return true;
}
Google Pixel Slate/Nocturne needs intel_dp_aux_display_control_capable set for the DPCD backlight to work. (The display exposes PWM_PIN capability, but the pin is not connected.) Disabling the check allows backlight adjustment to work. Signed-off-by: Satadru Pramanik <satadru@gmail.com> --- drivers/gpu/drm/i915/display/intel_dp_aux_backlight.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)