X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=drivers%2Fgpu%2Fdrm%2Fdrm_atomic.c;h=3f74193885f1ff1df95db09fa76e01174f6353b4;hb=8c4e378e426d1b065a1e8d9f45b8bcc4905d3410;hp=ef5f7663a718260769d6c8c98c6c644b5f1bc03d;hpb=58cf279acac3080ce03eeea5ca268210b3165fe1;p=deliverable%2Flinux.git

diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index ef5f7663a718..3f74193885f1 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -288,8 +288,8 @@ drm_atomic_get_crtc_state(struct drm_atomic_state *state,
 	state->crtcs[index] = crtc;
 	crtc_state->state = state;
 
-	DRM_DEBUG_ATOMIC("Added [CRTC:%d] %p state to %p\n",
-			 crtc->base.id, crtc_state, state);
+	DRM_DEBUG_ATOMIC("Added [CRTC:%d:%s] %p state to %p\n",
+			 crtc->base.id, crtc->name, crtc_state, state);
 
 	return crtc_state;
 }
@@ -429,11 +429,20 @@ int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
 }
 EXPORT_SYMBOL(drm_atomic_crtc_set_property);
 
-/*
+/**
+ * drm_atomic_crtc_get_property - get property value from CRTC state
+ * @crtc: the drm CRTC to set a property on
+ * @state: the state object to get the property value from
+ * @property: the property to set
+ * @val: return location for the property value
+ *
  * This function handles generic/core properties and calls out to
  * driver's ->atomic_get_property() for driver properties.  To ensure
  * consistent behavior you must call this function rather than the
  * driver hook directly.
+ *
+ * RETURNS:
+ * Zero on success, error code on failure
  */
 static int
 drm_atomic_crtc_get_property(struct drm_crtc *crtc,
@@ -477,8 +486,8 @@ static int drm_atomic_crtc_check(struct drm_crtc *crtc,
 	 */
 
 	if (state->active && !state->enable) {
-		DRM_DEBUG_ATOMIC("[CRTC:%d] active without enabled\n",
-				 crtc->base.id);
+		DRM_DEBUG_ATOMIC("[CRTC:%d:%s] active without enabled\n",
+				 crtc->base.id, crtc->name);
 		return -EINVAL;
 	}
 
@@ -487,14 +496,30 @@ static int drm_atomic_crtc_check(struct drm_crtc *crtc,
 	 * be able to trigger. */
 	if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) &&
 	    WARN_ON(state->enable && !state->mode_blob)) {
-		DRM_DEBUG_ATOMIC("[CRTC:%d] enabled without mode blob\n",
-				 crtc->base.id);
+		DRM_DEBUG_ATOMIC("[CRTC:%d:%s] enabled without mode blob\n",
+				 crtc->base.id, crtc->name);
 		return -EINVAL;
 	}
 
 	if (drm_core_check_feature(crtc->dev, DRIVER_ATOMIC) &&
 	    WARN_ON(!state->enable && state->mode_blob)) {
-		DRM_DEBUG_ATOMIC("[CRTC:%d] disabled with mode blob\n",
+		DRM_DEBUG_ATOMIC("[CRTC:%d:%s] disabled with mode blob\n",
+				 crtc->base.id, crtc->name);
+		return -EINVAL;
+	}
+
+	/*
+	 * Reject event generation for when a CRTC is off and stays off.
+	 * It wouldn't be hard to implement this, but userspace has a track
+	 * record of happily burning through 100% cpu (or worse, crash) when the
+	 * display pipe is suspended. To avoid all that fun just reject updates
+	 * that ask for events since likely that indicates a bug in the
+	 * compositor's drawing loop. This is consistent with the vblank IOCTL
+	 * and legacy page_flip IOCTL which also reject service on a disabled
+	 * pipe.
+	 */
+	if (state->event && !state->active && !crtc->state->active) {
+		DRM_DEBUG_ATOMIC("[CRTC:%d] requesting event but off\n",
 				 crtc->base.id);
 		return -EINVAL;
 	}
@@ -540,8 +565,8 @@ drm_atomic_get_plane_state(struct drm_atomic_state *state,
 	state->planes[index] = plane;
 	plane_state->state = state;
 
-	DRM_DEBUG_ATOMIC("Added [PLANE:%d] %p state to %p\n",
-			 plane->base.id, plane_state, state);
+	DRM_DEBUG_ATOMIC("Added [PLANE:%d:%s] %p state to %p\n",
+			 plane->base.id, plane->name, plane_state, state);
 
 	if (plane_state->crtc) {
 		struct drm_crtc_state *crtc_state;
@@ -616,11 +641,20 @@ int drm_atomic_plane_set_property(struct drm_plane *plane,
 }
 EXPORT_SYMBOL(drm_atomic_plane_set_property);
 
-/*
+/**
+ * drm_atomic_plane_get_property - get property value from plane state
+ * @plane: the drm plane to set a property on
+ * @state: the state object to get the property value from
+ * @property: the property to set
+ * @val: return location for the property value
+ *
  * This function handles generic/core properties and calls out to
  * driver's ->atomic_get_property() for driver properties.  To ensure
  * consistent behavior you must call this function rather than the
  * driver hook directly.
+ *
+ * RETURNS:
+ * Zero on success, error code on failure
  */
 static int
 drm_atomic_plane_get_property(struct drm_plane *plane,
@@ -752,8 +786,8 @@ static int drm_atomic_plane_check(struct drm_plane *plane,
 	}
 
 	if (plane_switching_crtc(state->state, plane, state)) {
-		DRM_DEBUG_ATOMIC("[PLANE:%d] switching CRTC directly\n",
-				 plane->base.id);
+		DRM_DEBUG_ATOMIC("[PLANE:%d:%s] switching CRTC directly\n",
+				 plane->base.id, plane->name);
 		return -EINVAL;
 	}
 
@@ -872,11 +906,20 @@ int drm_atomic_connector_set_property(struct drm_connector *connector,
 }
 EXPORT_SYMBOL(drm_atomic_connector_set_property);
 
-/*
+/**
+ * drm_atomic_connector_get_property - get property value from connector state
+ * @connector: the drm connector to set a property on
+ * @state: the state object to get the property value from
+ * @property: the property to set
+ * @val: return location for the property value
+ *
  * This function handles generic/core properties and calls out to
  * driver's ->atomic_get_property() for driver properties.  To ensure
  * consistent behavior you must call this function rather than the
  * driver hook directly.
+ *
+ * RETURNS:
+ * Zero on success, error code on failure
  */
 static int
 drm_atomic_connector_get_property(struct drm_connector *connector,
@@ -977,8 +1020,8 @@ drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
 	}
 
 	if (crtc)
-		DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d]\n",
-				 plane_state, crtc->base.id);
+		DRM_DEBUG_ATOMIC("Link plane state %p to [CRTC:%d:%s]\n",
+				 plane_state, crtc->base.id, crtc->name);
 	else
 		DRM_DEBUG_ATOMIC("Link plane state %p to [NOCRTC]\n",
 				 plane_state);
@@ -1036,17 +1079,28 @@ drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
 {
 	struct drm_crtc_state *crtc_state;
 
+	if (conn_state->crtc && conn_state->crtc != crtc) {
+		crtc_state = drm_atomic_get_existing_crtc_state(conn_state->state,
+								conn_state->crtc);
+
+		crtc_state->connector_mask &=
+			~(1 << drm_connector_index(conn_state->connector));
+	}
+
 	if (crtc) {
 		crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc);
 		if (IS_ERR(crtc_state))
 			return PTR_ERR(crtc_state);
+
+		crtc_state->connector_mask |=
+			1 << drm_connector_index(conn_state->connector);
 	}
 
 	conn_state->crtc = crtc;
 
 	if (crtc)
-		DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d]\n",
-				 conn_state, crtc->base.id);
+		DRM_DEBUG_ATOMIC("Link connector state %p to [CRTC:%d:%s]\n",
+				 conn_state, crtc->base.id, crtc->name);
 	else
 		DRM_DEBUG_ATOMIC("Link connector state %p to [NOCRTC]\n",
 				 conn_state);
@@ -1085,8 +1139,8 @@ drm_atomic_add_affected_connectors(struct drm_atomic_state *state,
 	if (ret)
 		return ret;
 
-	DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d] to %p\n",
-			 crtc->base.id, state);
+	DRM_DEBUG_ATOMIC("Adding all current connectors for [CRTC:%d:%s] to %p\n",
+			 crtc->base.id, crtc->name, state);
 
 	/*
 	 * Changed connectors are already in @state, so only need to look at the
@@ -1144,35 +1198,6 @@ drm_atomic_add_affected_planes(struct drm_atomic_state *state,
 }
 EXPORT_SYMBOL(drm_atomic_add_affected_planes);
 
-/**
- * drm_atomic_connectors_for_crtc - count number of connected outputs
- * @state: atomic state
- * @crtc: DRM crtc
- *
- * This function counts all connectors which will be connected to @crtc
- * according to @state. Useful to recompute the enable state for @crtc.
- */
-int
-drm_atomic_connectors_for_crtc(struct drm_atomic_state *state,
-			       struct drm_crtc *crtc)
-{
-	struct drm_connector *connector;
-	struct drm_connector_state *conn_state;
-
-	int i, num_connected_connectors = 0;
-
-	for_each_connector_in_state(state, connector, conn_state, i) {
-		if (conn_state->crtc == crtc)
-			num_connected_connectors++;
-	}
-
-	DRM_DEBUG_ATOMIC("State %p has %i connectors for [CRTC:%d]\n",
-			 state, num_connected_connectors, crtc->base.id);
-
-	return num_connected_connectors;
-}
-EXPORT_SYMBOL(drm_atomic_connectors_for_crtc);
-
 /**
  * drm_atomic_legacy_backoff - locking backoff for legacy ioctls
  * @state: atomic state
@@ -1220,8 +1245,8 @@ int drm_atomic_check_only(struct drm_atomic_state *state)
 	for_each_plane_in_state(state, plane, plane_state, i) {
 		ret = drm_atomic_plane_check(plane, plane_state);
 		if (ret) {
-			DRM_DEBUG_ATOMIC("[PLANE:%d] atomic core check failed\n",
-					 plane->base.id);
+			DRM_DEBUG_ATOMIC("[PLANE:%d:%s] atomic core check failed\n",
+					 plane->base.id, plane->name);
 			return ret;
 		}
 	}
@@ -1229,8 +1254,8 @@ int drm_atomic_check_only(struct drm_atomic_state *state)
 	for_each_crtc_in_state(state, crtc, crtc_state, i) {
 		ret = drm_atomic_crtc_check(crtc, crtc_state);
 		if (ret) {
-			DRM_DEBUG_ATOMIC("[CRTC:%d] atomic core check failed\n",
-					 crtc->base.id);
+			DRM_DEBUG_ATOMIC("[CRTC:%d:%s] atomic core check failed\n",
+					 crtc->base.id, crtc->name);
 			return ret;
 		}
 	}
@@ -1241,8 +1266,8 @@ int drm_atomic_check_only(struct drm_atomic_state *state)
 	if (!state->allow_modeset) {
 		for_each_crtc_in_state(state, crtc, crtc_state, i) {
 			if (drm_atomic_crtc_needs_modeset(crtc_state)) {
-				DRM_DEBUG_ATOMIC("[CRTC:%d] requires full modeset\n",
-						 crtc->base.id);
+				DRM_DEBUG_ATOMIC("[CRTC:%d:%s] requires full modeset\n",
+						 crtc->base.id, crtc->name);
 				return -EINVAL;
 			}
 		}