diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/core/dc_link.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/core/dc_link.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c index 6e99b8c3b5ff..75caa36ef85b 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c @@ -515,6 +515,50 @@ 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; + struct hdcp_protection_message msg14; + + memset(&msg22, 0, sizeof(struct hdcp_protection_message)); + memset(&msg14, 0, sizeof(struct hdcp_protection_message)); + memset(link->hdcp_caps.rx_caps.raw, 0, + sizeof(link->hdcp_caps.rx_caps.raw)); + + if ((link->connector_signal == SIGNAL_TYPE_DISPLAY_PORT && + link->ddc->transaction_type == + DDC_TRANSACTION_TYPE_I2C_OVER_AUX) || + link->connector_signal == SIGNAL_TYPE_EDP) { + msg22.data = link->hdcp_caps.rx_caps.raw; + msg22.length = sizeof(link->hdcp_caps.rx_caps.raw); + msg22.msg_id = HDCP_MESSAGE_ID_RX_CAPS; + } else { + msg22.data = &link->hdcp_caps.rx_caps.fields.version; + msg22.length = sizeof(link->hdcp_caps.rx_caps.fields.version); + msg22.msg_id = HDCP_MESSAGE_ID_HDCP2VERSION; + } + msg22.version = HDCP_VERSION_22; + msg22.link = HDCP_LINK_PRIMARY; + msg22.max_retries = 5; + 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; + msg14.version = HDCP_VERSION_14; + msg14.link = HDCP_LINK_PRIMARY; + msg14.max_retries = 5; + + status = dc_process_hdcp_msg(signal, link, &msg14); + } + +} +#endif + static void read_current_link_settings_on_detect(struct dc_link *link) { union lane_count_set lane_count_set = { {0} }; @@ -607,6 +651,12 @@ static bool detect_dp(struct dc_link *link, dal_ddc_service_set_transaction_type(link->ddc, sink_caps->transaction_type); +#if defined(CONFIG_DRM_AMD_DC_HDCP) + /* In case of fallback to SST when topology discovery below fails + * HDCP caps will be querried again later by the upper layer (caller + * of this function). */ + query_hdcp_capability(SIGNAL_TYPE_DISPLAY_PORT_MST, link); +#endif /* * This call will initiate MST topology discovery. Which * will detect MST ports and add new DRM connector DRM @@ -976,6 +1026,9 @@ static bool dc_link_detect_helper(struct dc_link *link, * TODO debug why Dell 2413 doesn't like * two link trainings */ +#if defined(CONFIG_DRM_AMD_DC_HDCP) + query_hdcp_capability(sink->sink_signal, link); +#endif // verify link cap for SST non-seamless boot if (!perform_dp_seamless_boot) @@ -989,6 +1042,9 @@ static bool dc_link_detect_helper(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 */ |