From: Alvin lee <alvin.lee3@xxxxxxx>
- define new dpcd address in drm
- implement new members in dpcd_caps to store values read from new dpcd address
Signed-off-by: Alvin lee <alvin.lee3 at amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland at amd.com>
---
.../gpu/drm/amd/display/dc/core/dc_link_dp.c | 25 +++++++++++++++++++
drivers/gpu/drm/amd/display/dc/dc.h | 5 ++++
.../gpu/drm/amd/display/include/dpcd_defs.h | 3 +++
3 files changed, 33 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
index ba52768d4aac..c8d2593ada0f 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
@@ -2262,6 +2262,11 @@ static void get_active_converter_info(
link->dpcd_caps.branch_hw_revision =
dp_hw_fw_revision.ieee_hw_rev;
+
+ memmove(
+ link->dpcd_caps.branch_fw_revision,
+ dp_hw_fw_revision.ieee_fw_rev,
+ sizeof(dp_hw_fw_revision.ieee_fw_rev));
}
}
@@ -2317,6 +2322,7 @@ static bool retrieve_link_cap(struct dc_link *link)
enum dc_status status = DC_ERROR_UNEXPECTED;
uint32_t read_dpcd_retry_cnt = 3;
int i;
+ struct dp_sink_hw_fw_revision dp_hw_fw_revision;
memset(dpcd_data, '\0', sizeof(dpcd_data));
memset(&down_strm_port_count,
@@ -2411,6 +2417,25 @@ static bool retrieve_link_cap(struct dc_link *link)
(sink_id.ieee_oui[1] << 8) +
(sink_id.ieee_oui[2]);
+ memmove(
+ link->dpcd_caps.sink_dev_id_str,
+ sink_id.ieee_device_id,
+ sizeof(sink_id.ieee_device_id));
+
+ core_link_read_dpcd(
+ link,
+ DP_SINK_HW_REVISION_START,
+ (uint8_t *)&dp_hw_fw_revision,
+ sizeof(dp_hw_fw_revision));
+
+ link->dpcd_caps.sink_hw_revision =
+ dp_hw_fw_revision.ieee_hw_rev;
+
+ memmove(
+ link->dpcd_caps.sink_fw_revision,
+ dp_hw_fw_revision.ieee_fw_rev,
+ sizeof(dp_hw_fw_revision.ieee_fw_rev));
+
/* Connectivity log: detection */
CONN_DATA_DETECT(link, dpcd_data, sizeof(dpcd_data), "Rx Caps: ");
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h
index 85533619440a..1b36e763f3b0 100644
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -628,9 +628,14 @@ struct dpcd_caps {
struct dc_dongle_caps dongle_caps;
uint32_t sink_dev_id;
+ int8_t sink_dev_id_str[6];
+ int8_t sink_hw_revision;
+ int8_t sink_fw_revision[2];
+
uint32_t branch_dev_id;
int8_t branch_dev_name[6];
int8_t branch_hw_revision;
+ int8_t branch_fw_revision[2];
bool allow_invalid_MSA_timing_param;
bool panel_mode_edp;
diff --git a/drivers/gpu/drm/amd/display/include/dpcd_defs.h b/drivers/gpu/drm/amd/display/include/dpcd_defs.h
index d8e52e3b8e3c..1c66166d0a94 100644
--- a/drivers/gpu/drm/amd/display/include/dpcd_defs.h
+++ b/drivers/gpu/drm/amd/display/include/dpcd_defs.h
@@ -27,6 +27,9 @@
#define __DAL_DPCD_DEFS_H__
#include <drm/drm_dp_helper.h>
+#ifndef DP_SINK_HW_REVISION_START // can remove this once the define gets into linux drm_dp_helper.h
+#define DP_SINK_HW_REVISION_START 0x409
+#endif
enum dpcd_revision {
DPCD_REV_10 = 0x10,
--
2.17.1
