TWxSoftware/twx-linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

drm/amd/display: Adjust DPCD read for DP tunneling

Browse Source 
Move DP tunneling field DPCD reading after all other RX caps are read.

Reviewed-by: Wenjing Liu <wenjing.liu@amd.com>
Signed-off-by: Cruise <Cruise.Hung@amd.com>
Signed-off-by: Fangzhi Zuo <jerry.zuo@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Cruise
2024-11-22 23:23:13 +08:00
committed by Alex Deucher
parent baf6645387
commit 340e463e65
1 changed files with 10 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c
+10 -11
View File
@@ -1632,13 +1632,6 @@ static bool retrieve_link_cap(struct dc_link *link)
sizeof(link->dpcd_caps.lttpr_caps.phy_repeater_cnt));
}
/* Read DP tunneling information. */
if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA) {
status = dpcd_get_tunneling_device_data(link);
if (status != DC_OK)
dm_error("%s: Read tunneling device data failed.\n", __func__);
}
dpcd_set_source_specific_data(link);
/* Sink may need to configure internals based on vendor, so allow some
* time before proceeding with possibly vendor specific transactions
@@ -1711,7 +1704,7 @@ static bool retrieve_link_cap(struct dc_link *link)
link->dpcd_caps.dprx_feature.raw = dpcd_dprx_data;
if (status != DC_OK)
dm_error("%s: Read DPRX caps data failed.\n", __func__);
dm_error("%s: Read DPRX feature list failed.\n", __func__);
/* AdaptiveSyncCapability */
dpcd_dprx_data = 0;
@@ -1726,15 +1719,13 @@ static bool retrieve_link_cap(struct dc_link *link)
link->dpcd_caps.adaptive_sync_caps.dp_adap_sync_caps.raw = dpcd_dprx_data;
if (status != DC_OK)
dm_error("%s: Read DPRX caps data failed. Addr:%#x\n",
dm_error("%s: Read DPRX feature list_1 failed. Addr:%#x\n",
__func__, DP_DPRX_FEATURE_ENUMERATION_LIST_CONT_1);
}
else {
link->dpcd_caps.dprx_feature.raw = 0;
}
/* Error condition checking...
* It is impossible for Sink to report Max Lane Count = 0.
* It is possible for Sink to report Max Link Rate = 0, if it is
@@ -1918,6 +1909,7 @@ static bool retrieve_link_cap(struct dc_link *link)
if (link->dpcd_caps.channel_coding_cap.bits.DP_128b_132b_SUPPORTED) {
DC_LOG_DP2("128b/132b encoding is supported at link %d", link->link_index);
/* Read 128b/132b suppoerted link rates */
core_link_read_dpcd(link,
DP_128B132B_SUPPORTED_LINK_RATES,
&link->dpcd_caps.dp_128b_132b_supported_link_rates.raw,
@@ -1965,6 +1957,13 @@ static bool retrieve_link_cap(struct dc_link *link)
link->dpcd_caps.max_uncompressed_pixel_rate_cap.raw,
sizeof(link->dpcd_caps.max_uncompressed_pixel_rate_cap.raw));
/* Read DP tunneling information. */
if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA) {
status = dpcd_get_tunneling_device_data(link);
if (status != DC_OK)
dm_error("%s: Read DP tunneling device data failed.\n", __func__);
}
retrieve_cable_id(link);
dpcd_write_cable_id_to_dprx(link);