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drm/amd/display: Check & log if receiver supports MST, DSC & FEC.

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After reading from receiver via DPCD, check & log if it supports MST,
DSC & FEC

Cc: Aurabindo Pillai <aurabindo.pillai@amd.com>
Cc: Fangzhi Zuo <Jerry.Zuo@amd.com>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@amd.com>
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Srinivasan Shanmugam 2023-04-15 21:03:16 +05:30 • committed by Alex Deucher
parent e4dfd94d5e
commit 9b035d0890
1 changed files with 16 additions and 0 deletions
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16
drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c
View file

@ -1552,6 +1552,9 @@ static bool retrieve_link_cap(struct dc_link *link)
int i; int i;
struct dp_sink_hw_fw_revision dp_hw_fw_revision; struct dp_sink_hw_fw_revision dp_hw_fw_revision;
const uint32_t post_oui_delay = 30; // 30ms const uint32_t post_oui_delay = 30; // 30ms
bool is_fec_supported = false;
bool is_dsc_basic_supported = false;
bool is_dsc_passthrough_supported = false;
memset(dpcd_data, '\0', sizeof(dpcd_data)); memset(dpcd_data, '\0', sizeof(dpcd_data));
memset(&down_strm_port_count, memset(&down_strm_port_count,
@ -1694,6 +1697,7 @@ static bool retrieve_link_cap(struct dc_link *link)
/* TODO - decouple raw mst capability from policy decision */ /* TODO - decouple raw mst capability from policy decision */
link->dpcd_caps.is_mst_capable = read_is_mst_supported(link); link->dpcd_caps.is_mst_capable = read_is_mst_supported(link);
DC_LOG_DC("%s: MST_Support: %s\n", __func__, str_yes_no(link->dpcd_caps.is_mst_capable));
get_active_converter_info(ds_port.byte, link); get_active_converter_info(ds_port.byte, link);
@ -1801,6 +1805,18 @@ static bool retrieve_link_cap(struct dc_link *link)
DP_DSC_SUPPORT, DP_DSC_SUPPORT,
link->dpcd_caps.dsc_caps.dsc_basic_caps.raw, link->dpcd_caps.dsc_caps.dsc_basic_caps.raw,
sizeof(link->dpcd_caps.dsc_caps.dsc_basic_caps.raw)); sizeof(link->dpcd_caps.dsc_caps.dsc_basic_caps.raw));
if (status == DC_OK) {
is_fec_supported = link->dpcd_caps.fec_cap.bits.FEC_CAPABLE;
is_dsc_basic_supported = link->dpcd_caps.dsc_caps.dsc_basic_caps.fields.dsc_support.DSC_SUPPORT;
is_dsc_passthrough_supported = link->dpcd_caps.dsc_caps.dsc_basic_caps.fields.dsc_support.DSC_PASSTHROUGH_SUPPORT;
DC_LOG_DC("%s: FEC_Sink_Support: %s\n", __func__,
str_yes_no(is_fec_supported));
DC_LOG_DC("%s: DSC_Basic_Sink_Support: %s\n", __func__,
str_yes_no(is_dsc_basic_supported));
if (link->dpcd_caps.is_mst_capable)
DC_LOG_DC("%s: DSC_Passthrough_Sink_Support: %s\n", __func__,
str_yes_no(is_dsc_passthrough_supported));
}
if (link->dpcd_caps.dongle_type != DISPLAY_DONGLE_NONE) { if (link->dpcd_caps.dongle_type != DISPLAY_DONGLE_NONE) {
status = core_link_read_dpcd( status = core_link_read_dpcd(
link, link,