diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c | 77 |
1 files changed, 26 insertions, 51 deletions
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 a6424c70f4c5..1ee544a32ebb 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 @@ -2185,6 +2185,30 @@ static int translate_dpcd_max_bpc(enum dpcd_downstream_port_max_bpc bpc) return -1; } +static void read_dp_device_vendor_id(struct dc_link *link) +{ + struct dp_device_vendor_id dp_id; + + /* read IEEE branch device id */ + core_link_read_dpcd( + link, + DP_BRANCH_OUI, + (uint8_t *)&dp_id, + sizeof(dp_id)); + + link->dpcd_caps.branch_dev_id = + (dp_id.ieee_oui[0] << 16) + + (dp_id.ieee_oui[1] << 8) + + dp_id.ieee_oui[2]; + + memmove( + link->dpcd_caps.branch_dev_name, + dp_id.ieee_device_id, + sizeof(dp_id.ieee_device_id)); +} + + + static void get_active_converter_info( uint8_t data, struct dc_link *link) { @@ -2271,27 +2295,6 @@ static void get_active_converter_info( ddc_service_set_dongle_type(link->ddc, link->dpcd_caps.dongle_type); { - struct dp_device_vendor_id dp_id; - - /* read IEEE branch device id */ - core_link_read_dpcd( - link, - DP_BRANCH_OUI, - (uint8_t *)&dp_id, - sizeof(dp_id)); - - link->dpcd_caps.branch_dev_id = - (dp_id.ieee_oui[0] << 16) + - (dp_id.ieee_oui[1] << 8) + - dp_id.ieee_oui[2]; - - memmove( - link->dpcd_caps.branch_dev_name, - dp_id.ieee_device_id, - sizeof(dp_id.ieee_device_id)); - } - - { struct dp_sink_hw_fw_revision dp_hw_fw_revision; core_link_read_dpcd( @@ -2455,6 +2458,8 @@ static bool retrieve_link_cap(struct dc_link *link) ds_port.byte = dpcd_data[DP_DOWNSTREAMPORT_PRESENT - DP_DPCD_REV]; + read_dp_device_vendor_id(link); + get_active_converter_info(ds_port.byte, link); dp_wa_power_up_0010FA(link, dpcd_data, sizeof(dpcd_data)); @@ -2586,9 +2591,6 @@ void detect_edp_sink_caps(struct dc_link *link) uint32_t entry; uint32_t link_rate_in_khz; enum dc_link_rate link_rate = LINK_RATE_UNKNOWN; - union lane_count_set lane_count_set = { {0} }; - uint8_t link_bw_set; - uint8_t link_rate_set; retrieve_link_cap(link); link->dpcd_caps.edp_supported_link_rates_count = 0; @@ -2614,33 +2616,6 @@ void detect_edp_sink_caps(struct dc_link *link) } } link->verified_link_cap = link->reported_link_cap; - - // Read DPCD 00101h to find out the number of lanes currently set - core_link_read_dpcd(link, DP_LANE_COUNT_SET, - &lane_count_set.raw, sizeof(lane_count_set)); - link->cur_link_settings.lane_count = lane_count_set.bits.LANE_COUNT_SET; - - // Read DPCD 00100h to find if standard link rates are set - core_link_read_dpcd(link, DP_LINK_BW_SET, - &link_bw_set, sizeof(link_bw_set)); - - if (link_bw_set == 0) { - /* If standard link rates are not being used, - * Read DPCD 00115h to find the link rate set used - */ - core_link_read_dpcd(link, DP_LINK_RATE_SET, - &link_rate_set, sizeof(link_rate_set)); - - if (link_rate_set < link->dpcd_caps.edp_supported_link_rates_count) { - link->cur_link_settings.link_rate = - link->dpcd_caps.edp_supported_link_rates[link_rate_set]; - link->cur_link_settings.link_rate_set = link_rate_set; - link->cur_link_settings.use_link_rate_set = true; - } - } else { - link->cur_link_settings.link_rate = link_bw_set; - link->cur_link_settings.use_link_rate_set = false; - } } void dc_link_dp_enable_hpd(const struct dc_link *link) |