drm/amd/display: Read replay data from sink

Read DP_SINK_PR_PIXEL_DEVIATION_PER_LINE and DP_SINK_PR_MAX_NUMBER_OF_DEVIATION_LINE Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Reviewed-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
mariux64 · Aug 7, 2023 · 76bd347 · 76bd347
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diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c
@@ -2009,6 +2009,16 @@ void detect_edp_sink_caps(struct dc_link *link)
 		core_link_read_dpcd(link, DP_RECEIVER_ALPM_CAP,
 			&link->dpcd_caps.alpm_caps.raw,
 			sizeof(link->dpcd_caps.alpm_caps.raw));
+
+	/*
+	 * Read REPLAY info
+	 */
+	core_link_read_dpcd(link, DP_SINK_PR_PIXEL_DEVIATION_PER_LINE,
+			&link->dpcd_caps.pr_info.pixel_deviation_per_line,
+			sizeof(link->dpcd_caps.pr_info.pixel_deviation_per_line));
+	core_link_read_dpcd(link, DP_SINK_PR_MAX_NUMBER_OF_DEVIATION_LINE,
+			&link->dpcd_caps.pr_info.max_deviation_line,
+			sizeof(link->dpcd_caps.pr_info.max_deviation_line));
 }
 
 bool dp_get_max_link_enc_cap(const struct dc_link *link, struct dc_link_settings *max_link_enc_cap)

diff --git a/drivers/gpu/drm/amd/display/include/dpcd_defs.h b/drivers/gpu/drm/amd/display/include/dpcd_defs.h
@@ -174,5 +174,7 @@ enum dpcd_psr_sink_states {
 #define DP_SOURCE_BACKLIGHT_ENABLE	    0x32F
 #define DP_SOURCE_MINIMUM_HBLANK_SUPPORTED     0x340
 #define DP_SINK_PR_REPLAY_STATUS                0x378
+#define DP_SINK_PR_PIXEL_DEVIATION_PER_LINE     0x379
+#define DP_SINK_PR_MAX_NUMBER_OF_DEVIATION_LINE 0x37A
 
 #endif /* __DAL_DPCD_DEFS_H__ */