const struct dc_stream_state *stream,
bool enable)
{
- uint8_t enable_dsc = enable ? 1 : 0;
+ static const uint8_t DSC_DISABLE;
+ static const uint8_t DSC_DECODING = 0x01;
+ static const uint8_t DSC_PASSTHROUGH = 0x02;
+
struct amdgpu_dm_connector *aconnector;
+ struct drm_dp_mst_port *port;
+ uint8_t enable_dsc = enable ? DSC_DECODING : DSC_DISABLE;
+ uint8_t enable_passthrough = enable ? DSC_PASSTHROUGH : DSC_DISABLE;
uint8_t ret = 0;
if (!stream)
aconnector->dsc_aux, stream, enable_dsc);
#endif
- ret = drm_dp_dpcd_write(aconnector->dsc_aux, DP_DSC_ENABLE, &enable_dsc, 1);
- DC_LOG_DC("Send DSC %s to MST RX\n", enable_dsc ? "enable" : "disable");
+ port = aconnector->port;
+
+ if (enable) {
+ if (port->passthrough_aux) {
+ ret = drm_dp_dpcd_write(port->passthrough_aux,
+ DP_DSC_ENABLE,
+ &enable_passthrough, 1);
+ DC_LOG_DC("Sent DSC pass-through enable to virtual dpcd port, ret = %u\n",
+ ret);
+ }
+
+ ret = drm_dp_dpcd_write(aconnector->dsc_aux,
+ DP_DSC_ENABLE, &enable_dsc, 1);
+ DC_LOG_DC("Sent DSC decoding enable to %s port, ret = %u\n",
+ (port->passthrough_aux) ? "remote RX" :
+ "virtual dpcd",
+ ret);
+ } else {
+ ret = drm_dp_dpcd_write(aconnector->dsc_aux,
+ DP_DSC_ENABLE, &enable_dsc, 1);
+ DC_LOG_DC("Sent DSC decoding disable to %s port, ret = %u\n",
+ (port->passthrough_aux) ? "remote RX" :
+ "virtual dpcd",
+ ret);
+
+ if (port->passthrough_aux) {
+ ret = drm_dp_dpcd_write(port->passthrough_aux,
+ DP_DSC_ENABLE,
+ &enable_passthrough, 1);
+ DC_LOG_DC("Sent DSC pass-through disable to virtual dpcd port, ret = %u\n",
+ ret);
+ }
+ }
}
if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT || stream->signal == SIGNAL_TYPE_EDP) {
#endif
}
- return (ret > 0);
+ return ret;
}
bool dm_helpers_is_dp_sink_present(struct dc_link *link)