[Intel-gfx] [PATCH v5 1/8] drm/dp_helper: Add helper to check if the sink supports given format with DSC

[Suraj Kandpal <suraj.kandpal@intel.com>]

From: Ankit Nautiyal <ankit.k.nautiyal@intel.com>

Add helper function to check if the DP sink supports DSC with the given
output format.

Signed-off-by: Ankit Nautiyal <ankit.k.nautiyal@intel.com>
---
 include/drm/display/drm_dp_helper.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/drm/display/drm_dp_helper.h b/include/drm/display/drm_dp_helper.h
index ab55453f2d2c..6c1706280746 100644
--- a/include/drm/display/drm_dp_helper.h
+++ b/include/drm/display/drm_dp_helper.h
@@ -193,6 +193,12 @@ drm_dp_dsc_sink_max_slice_width(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE])
 	return dsc_dpcd[DP_DSC_MAX_SLICE_WIDTH - DP_DSC_SUPPORT] *
 		DP_DSC_SLICE_WIDTH_MULTIPLIER;
 }
+/* Check if sink supports DSC with given output format */
+static inline bool
+drm_dp_dsc_sink_supports_format(const u8 dsc_dpcd[DP_DSC_RECEIVER_CAP_SIZE], u8 output_format)
+{
+	return dsc_dpcd[DP_DSC_DEC_COLOR_FORMAT_CAP - DP_DSC_SUPPORT] & output_format;
+}
 
 /* Forward Error Correction Support on DP 1.4 */
 static inline bool
-- 
2.25.1