On Wed, Oct 18, 2023 at 06:41:21PM +0300, Ville Syrjala wrote: > From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > > Bspec tells us that we should disable the transcoder before > deleting the payload. Looks like this has been reversed since > MST support was added. I suppose this shouldn't matter in practice since the downstream device shouldn't really do anything with the new payload until we send the ACT. But I see no compelling reason to deviate from the bspec sequence regardless. > > Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > --- > drivers/gpu/drm/i915/display/intel_dp_mst.c | 8 ++------ > 1 file changed, 2 insertions(+), 6 deletions(-) > > diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c > index 7b4628f4f124..57eb581b8a50 100644 > --- a/drivers/gpu/drm/i915/display/intel_dp_mst.c > +++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c > @@ -587,10 +587,6 @@ static void intel_mst_disable_dp(struct intel_atomic_state *state, > struct intel_dp *intel_dp = &dig_port->dp; > struct intel_connector *connector = > to_intel_connector(old_conn_state->connector); > - struct drm_dp_mst_topology_state *new_mst_state = > - drm_atomic_get_new_mst_topology_state(&state->base, &intel_dp->mst_mgr); > - struct drm_dp_mst_atomic_payload *new_payload = > - drm_atomic_get_mst_payload_state(new_mst_state, connector->port); > struct drm_i915_private *i915 = to_i915(connector->base.dev); > > drm_dbg_kms(&i915->drm, "active links %d\n", > @@ -598,8 +594,6 @@ static void intel_mst_disable_dp(struct intel_atomic_state *state, > > intel_hdcp_disable(intel_mst->connector); > > - drm_dp_remove_payload_part1(&intel_dp->mst_mgr, new_mst_state, new_payload); > - > intel_audio_codec_disable(encoder, old_crtc_state, old_conn_state); > } > > @@ -634,6 +628,8 @@ static void intel_mst_post_disable_dp(struct intel_atomic_state *state, > > intel_disable_transcoder(old_crtc_state); > > + drm_dp_remove_payload_part1(&intel_dp->mst_mgr, new_mst_state, new_payload); > + > clear_act_sent(encoder, old_crtc_state); > > intel_de_rmw(dev_priv, TRANS_DDI_FUNC_CTL(old_crtc_state->cpu_transcoder), > -- > 2.41.0 -- Ville Syrjälä Intel
