diff options
| author | Cruise <Cruise.Hung@amd.com> | 2024-11-22 23:23:13 +0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-12-10 10:26:49 -0500 |
| commit | 340e463e65625bcc7862a95ce7443dac33ab8de1 (patch) | |
| tree | f6a949b3f4c604c3c3146698c6e4d7500b3a731e | |
| parent | baf6645387ccff1aff9b7bb52aa2e582e8ce7332 (diff) | |
drm/amd/display: Adjust DPCD read for DP tunneling
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>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c | 21 |
1 files changed, 10 insertions, 11 deletions
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 9dabaf682171..ce9d799d2386 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 @@ -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); |