[PATCH 4/6] drm/amd/display: Read replay data from sink

[Bhawanpreet Lakha]

Read DP_SINK_PR_PIXEL_DEVIATION_PER_LINE  and
DP_SINK_PR_MAX_NUMBER_OF_DEVIATION_LINE

Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha at amd.com>
---
 .../amd/display/dc/link/protocols/link_dp_capability.c | 10 ++++++++++
 drivers/gpu/drm/amd/display/include/dpcd_defs.h        |  4 +++-
 2 files changed, 13 insertions(+), 1 deletion(-)

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
index 3a5e80b57711..5eec5d9bfd68 100644
--- 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
@@ -2008,6 +2008,16 @@ 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
index c062a44db078..5b70145abf12 100644
--- a/drivers/gpu/drm/amd/display/include/dpcd_defs.h
+++ b/drivers/gpu/drm/amd/display/include/dpcd_defs.h
@@ -172,6 +172,8 @@ enum dpcd_psr_sink_states {
 #define DP_SOURCE_BACKLIGHT_CURRENT_PEAK    0x326
 #define DP_SOURCE_BACKLIGHT_CONTROL	    0x32E
 #define DP_SOURCE_BACKLIGHT_ENABLE	    0x32F
-#define DP_SOURCE_MINIMUM_HBLANK_SUPPORTED	0x340
+#define DP_SOURCE_MINIMUM_HBLANK_SUPPORTED     0x340
+#define DP_SINK_PR_PIXEL_DEVIATION_PER_LINE     0x379
+#define DP_SINK_PR_MAX_NUMBER_OF_DEVIATION_LINE 0x37A
 
 #endif /* __DAL_DPCD_DEFS_H__ */
-- 
2.25.1