diff options
Diffstat (limited to 'drivers/gpu/drm/i915/intel_ddi.c')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_ddi.c | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 65f4b6786791..511aa60e0176 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -2162,7 +2162,8 @@ static void intel_ddi_pre_enable_dp(struct intel_encoder *encoder, intel_prepare_dp_ddi_buffers(encoder); intel_ddi_init_dp_buf_reg(encoder); - intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); + if (!link_mst) + intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_ON); intel_dp_start_link_train(intel_dp); if (port != PORT_A || INTEL_GEN(dev_priv) >= 9) intel_dp_stop_link_train(intel_dp); @@ -2236,12 +2237,21 @@ static void intel_ddi_post_disable(struct intel_encoder *intel_encoder, uint32_t val; bool wait = false; - /* old_crtc_state and old_conn_state are NULL when called from DP_MST */ - if (type == INTEL_OUTPUT_DP || type == INTEL_OUTPUT_EDP) { + /* + * old_crtc_state and old_conn_state are NULL when called from + * DP_MST. The main connector associated with this port is never + * bound to a crtc for MST. + */ + bool is_mst = !old_crtc_state; struct intel_dp *intel_dp = enc_to_intel_dp(encoder); - intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); + /* + * Power down sink before disabling the port, otherwise we end + * up getting interrupts from the sink on detecting link loss. + */ + if (!is_mst) + intel_dp_sink_dpms(intel_dp, DRM_MODE_DPMS_OFF); } val = I915_READ(DDI_BUF_CTL(port)); |