drm/display/dp_mst: Don't open code modeset checks for releasing time slots

I'm not sure why, but at the time I originally wrote the find/release time
slot helpers I thought we should avoid keeping modeset tracking out of the
MST helpers. In retrospect though there's no actual good reason to do
this, and the logic has ended up being identical across all the drivers
using the helpers. Also, it needs to be fixed anyway so we don't break
things when going atomic-only with MST.

So, let's just move this code into drm_dp_atomic_release_time_slots() and
stop open coding it.

Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: Wayne Lin <Wayne.Lin@amd.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: Fangzhi Zuo <Jerry.Zuo@amd.com>
Cc: Jani Nikula <jani.nikula@intel.com>
Cc: Imre Deak <imre.deak@intel.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Sean Paul <sean@poorly.run>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220817193847.557945-10-lyude@redhat.com

1 files changed, 1 insertions, 23 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 1cebbc51d8fa..1b067cd73261 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -308,13 +308,10 @@ intel_dp_mst_atomic_check(struct drm_connector *connector,
 			  struct drm_atomic_state *_state)
 {
 	struct intel_atomic_state *state = to_intel_atomic_state(_state);
-	struct drm_connector_state *new_conn_state =
-		drm_atomic_get_new_connector_state(&state->base, connector);
 	struct drm_connector_state *old_conn_state =
 		drm_atomic_get_old_connector_state(&state->base, connector);
 	struct intel_connector *intel_connector =
 		to_intel_connector(connector);
-	struct drm_crtc *new_crtc = new_conn_state->crtc;
 	struct drm_dp_mst_topology_mgr *mgr;
 	int ret;
 
@@ -326,27 +323,8 @@ intel_dp_mst_atomic_check(struct drm_connector *connector,
 	if (ret)
 		return ret;
 
-	if (!old_conn_state->crtc)
-		return 0;
-
-	/* We only want to free VCPI if this state disables the CRTC on this
-	 * connector
-	 */
-	if (new_crtc) {
-		struct intel_crtc *crtc = to_intel_crtc(new_crtc);
-		struct intel_crtc_state *crtc_state =
-			intel_atomic_get_new_crtc_state(state, crtc);
-
-		if (!crtc_state ||
-		    !drm_atomic_crtc_needs_modeset(&crtc_state->uapi) ||
-		    crtc_state->uapi.enable)
-			return 0;
-	}
-
 	mgr = &enc_to_mst(to_intel_encoder(old_conn_state->best_encoder))->primary->dp.mst_mgr;
-	ret = drm_dp_atomic_release_time_slots(&state->base, mgr, intel_connector->port);
-
-	return ret;
+	return drm_dp_atomic_release_time_slots(&state->base, mgr, intel_connector->port);
 }
 
 static void clear_act_sent(struct intel_encoder *encoder,