diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/link/link_detection.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/link/link_detection.c | 55 |
1 files changed, 29 insertions, 26 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/link/link_detection.c b/drivers/gpu/drm/amd/display/dc/link/link_detection.c index b8c4a04dd175..9655e6fa53a4 100644 --- a/drivers/gpu/drm/amd/display/dc/link/link_detection.c +++ b/drivers/gpu/drm/amd/display/dc/link/link_detection.c @@ -48,6 +48,9 @@ #include "dm_helpers.h" #include "clk_mgr.h" + // Offset DPCD 050Eh == 0x5A +#define MST_HUB_ID_0x5A 0x5A + #define DC_LOGGER \ link->ctx->logger #define DC_LOGGER_INIT(logger) @@ -65,7 +68,7 @@ static const u8 DP_SINK_BRANCH_DEV_NAME_7580[] = "7580\x80u"; -static const uint8_t dp_hdmi_dongle_signature_str[] = "DP-HDMI ADAPTOR"; +static const u8 dp_hdmi_dongle_signature_str[] = "DP-HDMI ADAPTOR"; static enum ddc_transaction_type get_ddc_transaction_type(enum signal_type sink_signal) { @@ -516,8 +519,8 @@ static void query_hdcp_capability(enum signal_type signal, struct dc_link *link) static void read_current_link_settings_on_detect(struct dc_link *link) { union lane_count_set lane_count_set = {0}; - uint8_t link_bw_set; - uint8_t link_rate_set; + uint8_t link_bw_set = 0; + uint8_t link_rate_set = 0; uint32_t read_dpcd_retry_cnt = 10; enum dc_status status = DC_ERROR_UNEXPECTED; int i; @@ -608,6 +611,7 @@ static bool detect_dp(struct dc_link *link, link->dpcd_caps.dongle_type = sink_caps->dongle_type; link->dpcd_caps.is_dongle_type_one = sink_caps->is_dongle_type_one; link->dpcd_caps.dpcd_rev.raw = 0; + link->dpcd_caps.usb4_dp_tun_info.dp_tun_cap.raw = 0; } return true; @@ -692,6 +696,15 @@ static void apply_dpia_mst_dsc_always_on_wa(struct dc_link *link) link->dpcd_caps.dsc_caps.dsc_basic_caps.fields.dsc_support.DSC_SUPPORT && !link->dc->debug.dpia_debug.bits.disable_mst_dsc_work_around) link->wa_flags.dpia_mst_dsc_always_on = true; + + if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA && + link->type == dc_connection_mst_branch && + link->dpcd_caps.branch_dev_id == DP_BRANCH_DEVICE_ID_90CC24 && + link->dpcd_caps.branch_vendor_specific_data[2] == MST_HUB_ID_0x5A && + link->dpcd_caps.dsc_caps.dsc_basic_caps.fields.dsc_support.DSC_SUPPORT && + !link->dc->debug.dpia_debug.bits.disable_mst_dsc_work_around) { + link->wa_flags.dpia_mst_dsc_always_on = true; + } } static void revert_dpia_mst_dsc_always_on_wa(struct dc_link *link) @@ -804,7 +817,10 @@ static bool should_verify_link_capability_destructively(struct dc_link *link, { bool destrictive = false; struct dc_link_settings max_link_cap; - bool is_link_enc_unavailable = link->link_enc && + bool is_link_enc_unavailable = false; + + if (!link->dc->config.unify_link_enc_assignment) + is_link_enc_unavailable = link->link_enc && link->dc->res_pool->funcs->link_encs_assign && !link_enc_cfg_is_link_enc_avail( link->ctx->dc, @@ -817,7 +833,8 @@ static bool should_verify_link_capability_destructively(struct dc_link *link, if (link->dc->debug.skip_detection_link_training || dc_is_embedded_signal(link->local_sink->sink_signal) || - link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA) { + (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA && + !link->dc->config.enable_dpia_pre_training)) { destrictive = false; } else if (link_dp_get_encoding_format(&max_link_cap) == DP_8b_10b_ENCODING) { @@ -863,7 +880,6 @@ static bool detect_link_and_local_sink(struct dc_link *link, struct dc_sink *prev_sink = NULL; struct dpcd_caps prev_dpcd_caps; enum dc_connection_type new_connection_type = dc_connection_none; - enum dc_connection_type pre_connection_type = link->type; const uint32_t post_oui_delay = 30; // 30ms DC_LOGGER_INIT(link->ctx->logger); @@ -965,7 +981,6 @@ static bool detect_link_and_local_sink(struct dc_link *link, } if (!detect_dp(link, &sink_caps, reason)) { - link->type = pre_connection_type; if (prev_sink) dc_sink_release(prev_sink); @@ -993,21 +1008,11 @@ static bool detect_link_and_local_sink(struct dc_link *link, link->reported_link_cap.link_rate > LINK_RATE_HIGH3) link->reported_link_cap.link_rate = LINK_RATE_HIGH3; - /* - * If this is DP over USB4 link then we need to: - * - Enable BW ALLOC support on DPtx if applicable - */ - if (dc->config.usb4_bw_alloc_support) { - if (link_dp_dpia_set_dptx_usb4_bw_alloc_support(link)) { - /* update with non reduced link cap if bw allocation mode is supported */ - if (link->dpia_bw_alloc_config.nrd_max_link_rate && - link->dpia_bw_alloc_config.nrd_max_lane_count) { - link->reported_link_cap.link_rate = - link->dpia_bw_alloc_config.nrd_max_link_rate; - link->reported_link_cap.lane_count = - link->dpia_bw_alloc_config.nrd_max_lane_count; - } - } + if (link->dpcd_caps.usb4_dp_tun_info.dp_tun_cap.bits.dp_tunneling + && link->dpcd_caps.usb4_dp_tun_info.dp_tun_cap.bits.dpia_bw_alloc + && link->dpcd_caps.usb4_dp_tun_info.driver_bw_cap.bits.driver_bw_alloc_support) { + if (link_dpia_enable_usb4_dp_bw_alloc_mode(link) == false) + link->dpcd_caps.usb4_dp_tun_info.dp_tun_cap.bits.dpia_bw_alloc = false; } break; } @@ -1191,8 +1196,7 @@ static bool detect_link_and_local_sink(struct dc_link *link, //sink only can use supported link rate table, we are foreced to enable it if (link->reported_link_cap.link_rate == LINK_RATE_UNKNOWN) link->panel_config.ilr.optimize_edp_link_rate = true; - if (edp_is_ilr_optimization_enabled(link)) - link->reported_link_cap.link_rate = get_max_link_rate_from_ilr_table(link); + link->reported_link_cap.link_rate = get_max_edp_link_rate(link); } } else { @@ -1299,8 +1303,7 @@ bool link_detect(struct dc_link *link, enum dc_detect_reason reason) link->dpcd_caps.is_mst_capable) is_delegated_to_mst_top_mgr = discover_dp_mst_topology(link, reason); - if (is_local_sink_detect_success && - pre_link_type == dc_connection_mst_branch && + if (pre_link_type == dc_connection_mst_branch && link->type != dc_connection_mst_branch) is_delegated_to_mst_top_mgr = link_reset_cur_dp_mst_topology(link); |