static void intel_mst_enable_dp(struct intel_encoder *encoder,
const struct intel_crtc_state *pipe_config,
const struct drm_connector_state *conn_state)
{
struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
struct intel_digital_port *intel_dig_port = intel_mst->primary;
struct intel_dp *intel_dp = &intel_dig_port->dp;
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
enum port port = intel_dig_port->base.port;
DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links);
if (intel_wait_for_register(&dev_priv->uncore,
DP_TP_STATUS(port),
DP_TP_STATUS_ACT_SENT,
DP_TP_STATUS_ACT_SENT,
1))
DRM_ERROR("Timed out waiting for ACT sent\n");
drm_dp_check_act_status(&intel_dp->mst_mgr);
drm_dp_update_payload_part2(&intel_dp->mst_mgr);
if (pipe_config->has_audio)
intel_audio_codec_enable(encoder, pipe_config, conn_state);
}
/*
* Polls for ACT (allocation change trigger) handled and sends
* ALLOCATE_PAYLOAD message.
*/
bool dm_helpers_dp_mst_poll_for_allocation_change_trigger(
struct dc_context *ctx,
const struct dc_stream_state *stream)
{
struct amdgpu_dm_connector *aconnector;
struct drm_dp_mst_topology_mgr *mst_mgr;
int ret;
aconnector = stream->sink->priv;
if (!aconnector || !aconnector->mst_port)
return false;
mst_mgr = &aconnector->mst_port->mst_mgr;
if (!mst_mgr->mst_state)
return false;
ret = drm_dp_check_act_status(mst_mgr);
if (ret)
return false;
return true;
}
static void intel_mst_post_disable_dp(struct intel_encoder *encoder,
const struct intel_crtc_state *old_crtc_state,
const struct drm_connector_state *old_conn_state)
{
struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
struct intel_digital_port *intel_dig_port = intel_mst->primary;
struct intel_dp *intel_dp = &intel_dig_port->dp;
struct intel_connector *connector =
to_intel_connector(old_conn_state->connector);
/* this can fail */
drm_dp_check_act_status(&intel_dp->mst_mgr);
/* and this can also fail */
drm_dp_update_payload_part2(&intel_dp->mst_mgr);
drm_dp_mst_deallocate_vcpi(&intel_dp->mst_mgr, connector->port);
/*
* Power down mst path before disabling the port, otherwise we end
* up getting interrupts from the sink upon detecting link loss.
*/
drm_dp_send_power_updown_phy(&intel_dp->mst_mgr, connector->port,
false);
intel_dp->active_mst_links--;
intel_mst->connector = NULL;
if (intel_dp->active_mst_links == 0) {
intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF);
intel_dig_port->base.post_disable(&intel_dig_port->base,
old_crtc_state, NULL);
}
DRM_DEBUG_KMS("active links %d\n", intel_dp->active_mst_links);
}
static void intel_mst_post_disable_dp(struct intel_encoder *encoder,
struct intel_crtc_state *old_crtc_state,
struct drm_connector_state *old_conn_state)
{
struct intel_dp_mst_encoder *intel_mst = enc_to_mst(&encoder->base);
struct intel_digital_port *intel_dig_port = intel_mst->primary;
struct intel_dp *intel_dp = &intel_dig_port->dp;
struct intel_connector *connector =
to_intel_connector(old_conn_state->connector);
DRM_DEBUG_KMS("%d\n", intel_dp->active_mst_links);
/* this can fail */
drm_dp_check_act_status(&intel_dp->mst_mgr);
/* and this can also fail */
drm_dp_update_payload_part2(&intel_dp->mst_mgr);
drm_dp_mst_deallocate_vcpi(&intel_dp->mst_mgr, connector->port);
intel_dp->active_mst_links--;
intel_mst->connector = NULL;
if (intel_dp->active_mst_links == 0) {
intel_dig_port->base.post_disable(&intel_dig_port->base,
NULL, NULL);
intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF);
}
}
