[Intel-gfx] [PATCH v6 1/9] drm/i915: Fix cap check for intel_dp_aux_backlight driver

[Pandiyan, Dhinakaran]

On Tue, 2017-05-09 at 16:40 -0700, Puthikorn Voravootivat wrote:
> intel_dp_aux_backlight driver should check for the
> DP_EDP_BACKLIGHT_BRIGHTNESS_AUX_SET_CAP before enable the driver.
> 
> Signed-off-by: Puthikorn Voravootivat <puthik at chromium.org>


Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>


> ---
>  drivers/gpu/drm/i915/intel_dp_aux_backlight.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/i915/intel_dp_aux_backlight.c b/drivers/gpu/drm/i915/intel_dp_aux_backlight.c
> index 6532e226db29..341bf2cb0c25 100644
> --- a/drivers/gpu/drm/i915/intel_dp_aux_backlight.c
> +++ b/drivers/gpu/drm/i915/intel_dp_aux_backlight.c
> @@ -144,6 +144,7 @@ intel_dp_aux_display_control_capable(struct intel_connector *connector)
>  	 */
>  	if (intel_dp->edp_dpcd[1] & DP_EDP_TCON_BACKLIGHT_ADJUSTMENT_CAP &&
>  	    (intel_dp->edp_dpcd[1] & DP_EDP_BACKLIGHT_AUX_ENABLE_CAP) &&
> +	    (intel_dp->edp_dpcd[2] & DP_EDP_BACKLIGHT_BRIGHTNESS_AUX_SET_CAP) &&
>  	    !((intel_dp->edp_dpcd[1] & DP_EDP_BACKLIGHT_PIN_ENABLE_CAP) ||
>  	      (intel_dp->edp_dpcd[2] & DP_EDP_BACKLIGHT_BRIGHTNESS_PWM_PIN_CAP))) {
>  		DRM_DEBUG_KMS("AUX Backlight Control Supported!\n");