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 | 145 |
1 files changed, 127 insertions, 18 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 38216c789d77..d471d58aba92 100644 --- a/drivers/gpu/drm/amd/display/dc/link/link_detection.c +++ b/drivers/gpu/drm/amd/display/dc/link/link_detection.c @@ -60,6 +60,10 @@ */ #define LINK_TRAINING_MAX_VERIFY_RETRY 2 +static const u8 DP_SINK_BRANCH_DEV_NAME_7580[] = "7580\x80u"; + +static const uint8_t dp_hdmi_dongle_signature_str[] = "DP-HDMI ADAPTOR"; + static enum ddc_transaction_type get_ddc_transaction_type(enum signal_type sink_signal) { enum ddc_transaction_type transaction_type = DDC_TRANSACTION_TYPE_NONE; @@ -466,7 +470,6 @@ static void link_disconnect_remap(struct dc_sink *prev_sink, struct dc_link *lin link->local_sink = prev_sink; } -#if defined(CONFIG_DRM_AMD_DC_HDCP) static void query_hdcp_capability(enum signal_type signal, struct dc_link *link) { struct hdcp_protection_message msg22; @@ -495,8 +498,6 @@ static void query_hdcp_capability(enum signal_type signal, struct dc_link *link) dc_process_hdcp_msg(signal, link, &msg22); if (signal == SIGNAL_TYPE_DISPLAY_PORT || signal == SIGNAL_TYPE_DISPLAY_PORT_MST) { - enum hdcp_message_status status = HDCP_MESSAGE_UNSUPPORTED; - msg14.data = &link->hdcp_caps.bcaps.raw; msg14.length = sizeof(link->hdcp_caps.bcaps.raw); msg14.msg_id = HDCP_MESSAGE_ID_READ_BCAPS; @@ -504,11 +505,10 @@ static void query_hdcp_capability(enum signal_type signal, struct dc_link *link) msg14.link = HDCP_LINK_PRIMARY; msg14.max_retries = 5; - status = dc_process_hdcp_msg(signal, link, &msg14); + dc_process_hdcp_msg(signal, link, &msg14); } } -#endif // CONFIG_DRM_AMD_DC_HDCP static void read_current_link_settings_on_detect(struct dc_link *link) { union lane_count_set lane_count_set = {0}; @@ -832,7 +832,7 @@ static void verify_link_capability(struct dc_link *link, struct dc_sink *sink, verify_link_capability_non_destructive(link); } -/** +/* * detect_link_and_local_sink() - Detect if a sink is attached to a given link * * link->local_sink is created or destroyed as needed. @@ -855,6 +855,7 @@ 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); @@ -878,7 +879,7 @@ static bool detect_link_and_local_sink(struct dc_link *link, return true; } - if (!dc_link_detect_connection_type(link, &new_connection_type)) { + if (!link_detect_connection_type(link, &new_connection_type)) { BREAK_TO_DEBUGGER(); return false; } @@ -957,6 +958,8 @@ 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); return false; @@ -977,6 +980,11 @@ static bool detect_link_and_local_sink(struct dc_link *link, (link->dpcd_caps.dongle_type != DISPLAY_DONGLE_DP_HDMI_CONVERTER)) converter_disable_audio = true; + + /* limited link rate to HBR3 for DPIA until we implement USB4 V2 */ + if (link->ep_type == DISPLAY_ENDPOINT_USB4_DPIA && + link->reported_link_cap.link_rate > LINK_RATE_HIGH3) + link->reported_link_cap.link_rate = LINK_RATE_HIGH3; break; } @@ -1084,9 +1092,7 @@ static bool detect_link_and_local_sink(struct dc_link *link, * TODO debug why certain monitors don't like * two link trainings */ -#if defined(CONFIG_DRM_AMD_DC_HDCP) query_hdcp_capability(sink->sink_signal, link); -#endif } else { // If edid is the same, then discard new sink and revert back to original sink if (same_edid) { @@ -1094,9 +1100,7 @@ static bool detect_link_and_local_sink(struct dc_link *link, sink = prev_sink; prev_sink = NULL; } -#if defined(CONFIG_DRM_AMD_DC_HDCP) query_hdcp_capability(sink->sink_signal, link); -#endif } /* HDMI-DVI Dongle */ @@ -1162,9 +1166,7 @@ static bool detect_link_and_local_sink(struct dc_link *link, /* From Connected-to-Disconnected. */ link->type = dc_connection_none; sink_caps.signal = SIGNAL_TYPE_NONE; -#if defined(CONFIG_DRM_AMD_DC_HDCP) memset(&link->hdcp_caps, 0, sizeof(struct hdcp_caps)); -#endif /* When we unplug a passive DP-HDMI dongle connection, dongle_max_pix_clk * is not cleared. If we emulate a DP signal on this connection, it thinks * the dongle is still there and limits the number of modes we can emulate. @@ -1188,8 +1190,8 @@ static bool detect_link_and_local_sink(struct dc_link *link, return true; } -/** - * dc_link_detect_connection_type() - Determine if there is a sink connected +/* + * link_detect_connection_type() - Determine if there is a sink connected * * @type: Returned connection type * Does not detect downstream devices, such as MST sinks @@ -1213,7 +1215,7 @@ bool link_detect_connection_type(struct dc_link *link, enum dc_connection_type * /* Link may not have physical HPD pin. */ if (link->ep_type != DISPLAY_ENDPOINT_PHY) { - if (link->is_hpd_pending || !dc_link_dpia_query_hpd_status(link)) + if (link->is_hpd_pending || !dpia_query_hpd_status(link)) *type = dc_connection_none; else *type = dc_connection_single; @@ -1230,6 +1232,11 @@ bool link_detect_connection_type(struct dc_link *link, enum dc_connection_type * /* TODO: need to do the actual detection */ } else { *type = dc_connection_none; + if (link->connector_signal == SIGNAL_TYPE_EDP) { + /* eDP is not connected, power down it */ + if (!link->dc->config.edp_no_power_sequencing) + link->dc->hwss.edp_power_control(link, false); + } } return true; @@ -1244,11 +1251,16 @@ bool link_detect(struct dc_link *link, enum dc_detect_reason reason) bool is_delegated_to_mst_top_mgr = false; enum dc_connection_type pre_link_type = link->type; + DC_LOGGER_INIT(link->ctx->logger); + is_local_sink_detect_success = detect_link_and_local_sink(link, reason); if (is_local_sink_detect_success && link->local_sink) verify_link_capability(link, link->local_sink, reason); + DC_LOG_DC("%s: link_index=%d is_local_sink_detect_success=%d pre_link_type=%d link_type=%d\n", __func__, + link->link_index, is_local_sink_detect_success, pre_link_type, link->type); + if (is_local_sink_detect_success && link->local_sink && dc_is_dp_signal(link->local_sink->sink_signal) && link->dpcd_caps.is_mst_capable) @@ -1266,7 +1278,6 @@ void link_clear_dprx_states(struct dc_link *link) { memset(&link->dprx_states, 0, sizeof(link->dprx_states)); } -#if defined(CONFIG_DRM_AMD_DC_HDCP) bool link_is_hdcp14(struct dc_link *link, enum signal_type signal) { @@ -1314,10 +1325,108 @@ bool link_is_hdcp22(struct dc_link *link, enum signal_type signal) return ret; } -#endif // CONFIG_DRM_AMD_DC_HDCP const struct dc_link_status *link_get_status(const struct dc_link *link) { return &link->link_status; } + +static bool link_add_remote_sink_helper(struct dc_link *dc_link, struct dc_sink *sink) +{ + if (dc_link->sink_count >= MAX_SINKS_PER_LINK) { + BREAK_TO_DEBUGGER(); + return false; + } + + dc_sink_retain(sink); + + dc_link->remote_sinks[dc_link->sink_count] = sink; + dc_link->sink_count++; + + return true; +} + +struct dc_sink *link_add_remote_sink( + struct dc_link *link, + const uint8_t *edid, + int len, + struct dc_sink_init_data *init_data) +{ + struct dc_sink *dc_sink; + enum dc_edid_status edid_status; + + if (len > DC_MAX_EDID_BUFFER_SIZE) { + dm_error("Max EDID buffer size breached!\n"); + return NULL; + } + + if (!init_data) { + BREAK_TO_DEBUGGER(); + return NULL; + } + + if (!init_data->link) { + BREAK_TO_DEBUGGER(); + return NULL; + } + + dc_sink = dc_sink_create(init_data); + + if (!dc_sink) + return NULL; + + memmove(dc_sink->dc_edid.raw_edid, edid, len); + dc_sink->dc_edid.length = len; + + if (!link_add_remote_sink_helper( + link, + dc_sink)) + goto fail_add_sink; + + edid_status = dm_helpers_parse_edid_caps( + link, + &dc_sink->dc_edid, + &dc_sink->edid_caps); + + /* + * Treat device as no EDID device if EDID + * parsing fails + */ + if (edid_status != EDID_OK && edid_status != EDID_PARTIAL_VALID) { + dc_sink->dc_edid.length = 0; + dm_error("Bad EDID, status%d!\n", edid_status); + } + + return dc_sink; + +fail_add_sink: + dc_sink_release(dc_sink); + return NULL; +} + +void link_remove_remote_sink(struct dc_link *link, struct dc_sink *sink) +{ + int i; + + if (!link->sink_count) { + BREAK_TO_DEBUGGER(); + return; + } + + for (i = 0; i < link->sink_count; i++) { + if (link->remote_sinks[i] == sink) { + dc_sink_release(sink); + link->remote_sinks[i] = NULL; + + /* shrink array to remove empty place */ + while (i < link->sink_count - 1) { + link->remote_sinks[i] = link->remote_sinks[i+1]; + i++; + } + link->remote_sinks[i] = NULL; + link->sink_count--; + return; + } + } +} |