Commit 5290ed0a authored by Ilya Bakoulin's avatar Ilya Bakoulin Committed by Alex Deucher
Browse files

drm/amd/display: Add DSC granular throughput adjustment 



[Why/How]
Update DSC DPCD parsing to take granular throughput adjustment into
consideration.

Reviewed-by: default avatarWenjing Liu <wenjing.liu@amd.com>
Acked-by: default avatarTom Chung <chiahsuan.chung@amd.com>
Signed-off-by: default avatarIlya Bakoulin <ilya.bakoulin@amd.com>
Tested-by: default avatarDaniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent d581ceab

drivers/gpu/drm/amd/display/dc/dsc/dc_dsc.c

+8 −2
Original line number Diff line number Diff line
@@ -331,7 +331,8 @@ bool dc_dsc_parse_dsc_dpcd(const struct dc *dc, 
		int buff_block_size;

		int buff_size;



		if (!dsc_buff_block_size_from_dpcd(dpcd_dsc_basic_data[DP_DSC_RC_BUF_BLK_SIZE - DP_DSC_SUPPORT],

		if (!dsc_buff_block_size_from_dpcd(

				dpcd_dsc_basic_data[DP_DSC_RC_BUF_BLK_SIZE - DP_DSC_SUPPORT] & 0x03,

				&buff_block_size))

			return false;
@@ -357,10 +358,15 @@ bool dc_dsc_parse_dsc_dpcd(const struct dc *dc, 


	{

		int dpcd_throughput = dpcd_dsc_basic_data[DP_DSC_PEAK_THROUGHPUT - DP_DSC_SUPPORT];

		int dsc_throughput_granular_delta;



		dsc_throughput_granular_delta = dpcd_dsc_basic_data[DP_DSC_RC_BUF_BLK_SIZE - DP_DSC_SUPPORT] >> 3;

		dsc_throughput_granular_delta *= 2;



		if (!dsc_throughput_from_dpcd(dpcd_throughput & DP_DSC_THROUGHPUT_MODE_0_MASK,

									  &dsc_sink_caps->throughput_mode_0_mps))

			return false;

		dsc_sink_caps->throughput_mode_0_mps += dsc_throughput_granular_delta;



		dpcd_throughput = (dpcd_throughput & DP_DSC_THROUGHPUT_MODE_1_MASK) >> DP_DSC_THROUGHPUT_MODE_1_SHIFT;

		if (!dsc_throughput_from_dpcd(dpcd_throughput, &dsc_sink_caps->throughput_mode_1_mps))