diff options
Diffstat (limited to 'drivers/gpu/drm/i915/display/intel_dp_mst.c')
| -rw-r--r-- | drivers/gpu/drm/i915/display/intel_dp_mst.c | 33 |
1 files changed, 20 insertions, 13 deletions
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c index 8cfff078486d..9251d47f8fe6 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c @@ -347,6 +347,7 @@ static void intel_mst_post_disable_dp(struct intel_encoder *encoder, to_intel_connector(old_conn_state->connector); struct drm_i915_private *dev_priv = to_i915(connector->base.dev); bool last_mst_stream; + u32 val; intel_dp->active_mst_links--; last_mst_stream = intel_dp->active_mst_links == 0; @@ -357,6 +358,19 @@ static void intel_mst_post_disable_dp(struct intel_encoder *encoder, intel_disable_pipe(old_crtc_state); + drm_dp_update_payload_part2(&intel_dp->mst_mgr); + + val = I915_READ(TRANS_DDI_FUNC_CTL(old_crtc_state->cpu_transcoder)); + val &= ~TRANS_DDI_DP_VC_PAYLOAD_ALLOC; + I915_WRITE(TRANS_DDI_FUNC_CTL(old_crtc_state->cpu_transcoder), val); + + if (intel_de_wait_for_set(dev_priv, intel_dp->regs.dp_tp_status, + DP_TP_STATUS_ACT_SENT, 1)) + DRM_ERROR("Timed out waiting for ACT sent when disabling\n"); + drm_dp_check_act_status(&intel_dp->mst_mgr); + + drm_dp_mst_deallocate_vcpi(&intel_dp->mst_mgr, connector->port); + intel_ddi_disable_transcoder_func(old_crtc_state); if (INTEL_GEN(dev_priv) >= 9) @@ -365,6 +379,12 @@ static void intel_mst_post_disable_dp(struct intel_encoder *encoder, ironlake_pfit_disable(old_crtc_state); /* + * 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); + /* * From TGL spec: "If multi-stream slave transcoder: Configure * Transcoder Clock Select to direct no clock to the transcoder" * @@ -374,19 +394,6 @@ static void intel_mst_post_disable_dp(struct intel_encoder *encoder, if (INTEL_GEN(dev_priv) < 12 || !last_mst_stream) intel_ddi_disable_pipe_clock(old_crtc_state); - /* 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_mst->connector = NULL; if (last_mst_stream) |