drm/i915/mst: Wait for ACT sent before enabling the pipe (90c49a09) · Commits · 戴 / test

The correct sequence according to bspec is to wait for the ACT sent status before we turn on the pipe. Make it so. Signed-off-by:

drivers/gpu/drm/i915/display/intel_dp_mst.c

+5 −4

Original line number	Diff line number	Diff line
		@@ -512,10 +512,6 @@ static void intel_mst_enable_dp(struct intel_atomic_state *state,

		intel_ddi_enable_transcoder_func(encoder, pipe_config);

		intel_enable_pipe(pipe_config);

		intel_crtc_vblank_on(pipe_config);

		drm_dbg_kms(&dev_priv->drm, "active links %d\n",
		intel_dp->active_mst_links);

		@@ -526,6 +522,11 @@ static void intel_mst_enable_dp(struct intel_atomic_state *state,
		drm_dp_check_act_status(&intel_dp->mst_mgr);

		drm_dp_update_payload_part2(&intel_dp->mst_mgr);

		intel_enable_pipe(pipe_config);

		intel_crtc_vblank_on(pipe_config);

		if (pipe_config->has_audio)
		intel_audio_codec_enable(encoder, pipe_config, conn_state);
		}