diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c')
-rw-r--r-- | drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c b/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c index 6f730b5bfe42..5e384a8a83dc 100644 --- a/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c +++ b/drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c @@ -322,3 +322,92 @@ static const struct protection_properties dp_11_protection = { .process_transaction = dp_11_process_transaction }; +static const struct protection_properties *get_protection_properties_by_signal( + struct dc_link *link, + enum signal_type st, + enum hdcp_version version) +{ + switch (version) { + case HDCP_VERSION_14: + switch (st) { + case SIGNAL_TYPE_DVI_SINGLE_LINK: + case SIGNAL_TYPE_DVI_DUAL_LINK: + case SIGNAL_TYPE_HDMI_TYPE_A: + return &hdmi_14_protection; + case SIGNAL_TYPE_DISPLAY_PORT: + if (link && + (link->dpcd_caps.dongle_type == DISPLAY_DONGLE_DP_VGA_CONVERTER || + link->dpcd_caps.dongle_caps.dongle_type == DISPLAY_DONGLE_DP_VGA_CONVERTER)) { + return &non_supported_protection; + } + return &dp_11_protection; + case SIGNAL_TYPE_DISPLAY_PORT_MST: + case SIGNAL_TYPE_EDP: + return &dp_11_protection; + default: + return &non_supported_protection; + } + break; + case HDCP_VERSION_22: + switch (st) { + case SIGNAL_TYPE_DVI_SINGLE_LINK: + case SIGNAL_TYPE_DVI_DUAL_LINK: + case SIGNAL_TYPE_HDMI_TYPE_A: + return &hdmi_14_protection; //todo version2.2 + case SIGNAL_TYPE_DISPLAY_PORT: + case SIGNAL_TYPE_DISPLAY_PORT_MST: + case SIGNAL_TYPE_EDP: + return &dp_11_protection; //todo version2.2 + default: + return &non_supported_protection; + } + break; + default: + return &non_supported_protection; + } +} + +enum hdcp_message_status dc_process_hdcp_msg( + enum signal_type signal, + struct dc_link *link, + struct hdcp_protection_message *message_info) +{ + enum hdcp_message_status status = HDCP_MESSAGE_FAILURE; + uint32_t i = 0; + + const struct protection_properties *protection_props; + + if (!message_info) + return HDCP_MESSAGE_UNSUPPORTED; + + if (message_info->msg_id < HDCP_MESSAGE_ID_READ_BKSV || + message_info->msg_id >= HDCP_MESSAGE_ID_MAX) + return HDCP_MESSAGE_UNSUPPORTED; + + protection_props = + get_protection_properties_by_signal( + link, + signal, + message_info->version); + + if (!protection_props->supported) + return HDCP_MESSAGE_UNSUPPORTED; + + if (protection_props->process_transaction( + link, + message_info)) { + status = HDCP_MESSAGE_SUCCESS; + } else { + for (i = 0; i < message_info->max_retries; i++) { + if (protection_props->process_transaction( + link, + message_info)) { + status = HDCP_MESSAGE_SUCCESS; + break; + } + } + } + + return status; +} + |