drm: Fix up drm_atomic_state_helper.[hc] extraction

I've misplaced two functions by accident:
- drm_atomic_helper_duplicate_state is really part of the
  resume/suspend/shutdown device-wide helpers.
- drm_atomic_helper_legacy_gamma_set is part of the legacy ioctl
  compat helpers.

Move them both back.

Fixes: 9ef8a9dc4b ("drm: Extract drm_atomic_state_helper.[hc]")
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Sean Paul <sean@poorly.run>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181128100728.4674-1-daniel.vetter@ffwll.ch

drivers/gpu/drm/drm_atomic_helper.c

@@ -3138,6 +3138,93 @@ void drm_atomic_helper_shutdown(struct drm_device *dev)
 }
 EXPORT_SYMBOL(drm_atomic_helper_shutdown);
 
+/**
+ * drm_atomic_helper_duplicate_state - duplicate an atomic state object
+ * @dev: DRM device
+ * @ctx: lock acquisition context
+ *
+ * Makes a copy of the current atomic state by looping over all objects and
+ * duplicating their respective states. This is used for example by suspend/
+ * resume support code to save the state prior to suspend such that it can
+ * be restored upon resume.
+ *
+ * Note that this treats atomic state as persistent between save and restore.
+ * Drivers must make sure that this is possible and won't result in confusion
+ * or erroneous behaviour.
+ *
+ * Note that if callers haven't already acquired all modeset locks this might
+ * return -EDEADLK, which must be handled by calling drm_modeset_backoff().
+ *
+ * Returns:
+ * A pointer to the copy of the atomic state object on success or an
+ * ERR_PTR()-encoded error code on failure.
+ *
+ * See also:
+ * drm_atomic_helper_suspend(), drm_atomic_helper_resume()
+ */
+struct drm_atomic_state *
+drm_atomic_helper_duplicate_state(struct drm_device *dev,
+				  struct drm_modeset_acquire_ctx *ctx)
+{
+	struct drm_atomic_state *state;
+	struct drm_connector *conn;
+	struct drm_connector_list_iter conn_iter;
+	struct drm_plane *plane;
+	struct drm_crtc *crtc;
+	int err = 0;
+
+	state = drm_atomic_state_alloc(dev);
+	if (!state)
+		return ERR_PTR(-ENOMEM);
+
+	state->acquire_ctx = ctx;
+
+	drm_for_each_crtc(crtc, dev) {
+		struct drm_crtc_state *crtc_state;
+
+		crtc_state = drm_atomic_get_crtc_state(state, crtc);
+		if (IS_ERR(crtc_state)) {
+			err = PTR_ERR(crtc_state);
+			goto free;
+		}
+	}
+
+	drm_for_each_plane(plane, dev) {
+		struct drm_plane_state *plane_state;
+
+		plane_state = drm_atomic_get_plane_state(state, plane);
+		if (IS_ERR(plane_state)) {
+			err = PTR_ERR(plane_state);
+			goto free;
+		}
+	}
+
+	drm_connector_list_iter_begin(dev, &conn_iter);
+	drm_for_each_connector_iter(conn, &conn_iter) {
+		struct drm_connector_state *conn_state;
+
+		conn_state = drm_atomic_get_connector_state(state, conn);
+		if (IS_ERR(conn_state)) {
+			err = PTR_ERR(conn_state);
+			drm_connector_list_iter_end(&conn_iter);
+			goto free;
+		}
+	}
+	drm_connector_list_iter_end(&conn_iter);
+
+	/* clear the acquire context so that it isn't accidentally reused */
+	state->acquire_ctx = NULL;
+
+free:
+	if (err < 0) {
+		drm_atomic_state_put(state);
+		state = ERR_PTR(err);
+	}
+
+	return state;
+}
+EXPORT_SYMBOL(drm_atomic_helper_duplicate_state);
+
 /**
  * drm_atomic_helper_suspend - subsystem-level suspend helper
  * @dev: DRM device
@@ -3407,3 +3494,73 @@ fail:
 	return ret;
 }
 EXPORT_SYMBOL(drm_atomic_helper_page_flip_target);
+
+/**
+ * drm_atomic_helper_legacy_gamma_set - set the legacy gamma correction table
+ * @crtc: CRTC object
+ * @red: red correction table
+ * @green: green correction table
+ * @blue: green correction table
+ * @size: size of the tables
+ * @ctx: lock acquire context
+ *
+ * Implements support for legacy gamma correction table for drivers
+ * that support color management through the DEGAMMA_LUT/GAMMA_LUT
+ * properties. See drm_crtc_enable_color_mgmt() and the containing chapter for
+ * how the atomic color management and gamma tables work.
+ */
+int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc,
+				       u16 *red, u16 *green, u16 *blue,
+				       uint32_t size,
+				       struct drm_modeset_acquire_ctx *ctx)
+{
+	struct drm_device *dev = crtc->dev;
+	struct drm_atomic_state *state;
+	struct drm_crtc_state *crtc_state;
+	struct drm_property_blob *blob = NULL;
+	struct drm_color_lut *blob_data;
+	int i, ret = 0;
+	bool replaced;
+
+	state = drm_atomic_state_alloc(crtc->dev);
+	if (!state)
+		return -ENOMEM;
+
+	blob = drm_property_create_blob(dev,
+					sizeof(struct drm_color_lut) * size,
+					NULL);
+	if (IS_ERR(blob)) {
+		ret = PTR_ERR(blob);
+		blob = NULL;
+		goto fail;
+	}
+
+	/* Prepare GAMMA_LUT with the legacy values. */
+	blob_data = blob->data;
+	for (i = 0; i < size; i++) {
+		blob_data[i].red = red[i];
+		blob_data[i].green = green[i];
+		blob_data[i].blue = blue[i];
+	}
+
+	state->acquire_ctx = ctx;
+	crtc_state = drm_atomic_get_crtc_state(state, crtc);
+	if (IS_ERR(crtc_state)) {
+		ret = PTR_ERR(crtc_state);
+		goto fail;
+	}
+
+	/* Reset DEGAMMA_LUT and CTM properties. */
+	replaced  = drm_property_replace_blob(&crtc_state->degamma_lut, NULL);
+	replaced |= drm_property_replace_blob(&crtc_state->ctm, NULL);
+	replaced |= drm_property_replace_blob(&crtc_state->gamma_lut, blob);
+	crtc_state->color_mgmt_changed |= replaced;
+
+	ret = drm_atomic_commit(state);
+
+fail:
+	drm_atomic_state_put(state);
+	drm_property_blob_put(blob);
+	return ret;
+}
+EXPORT_SYMBOL(drm_atomic_helper_legacy_gamma_set);

drivers/gpu/drm/drm_atomic_state_helper.c

@@ -393,93 +393,6 @@ drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector)
 }
 EXPORT_SYMBOL(drm_atomic_helper_connector_duplicate_state);
 
-/**
- * drm_atomic_helper_duplicate_state - duplicate an atomic state object
- * @dev: DRM device
- * @ctx: lock acquisition context
- *
- * Makes a copy of the current atomic state by looping over all objects and
- * duplicating their respective states. This is used for example by suspend/
- * resume support code to save the state prior to suspend such that it can
- * be restored upon resume.
- *
- * Note that this treats atomic state as persistent between save and restore.
- * Drivers must make sure that this is possible and won't result in confusion
- * or erroneous behaviour.
- *
- * Note that if callers haven't already acquired all modeset locks this might
- * return -EDEADLK, which must be handled by calling drm_modeset_backoff().
- *
- * Returns:
- * A pointer to the copy of the atomic state object on success or an
- * ERR_PTR()-encoded error code on failure.
- *
- * See also:
- * drm_atomic_helper_suspend(), drm_atomic_helper_resume()
- */
-struct drm_atomic_state *
-drm_atomic_helper_duplicate_state(struct drm_device *dev,
-				  struct drm_modeset_acquire_ctx *ctx)
-{
-	struct drm_atomic_state *state;
-	struct drm_connector *conn;
-	struct drm_connector_list_iter conn_iter;
-	struct drm_plane *plane;
-	struct drm_crtc *crtc;
-	int err = 0;
-
-	state = drm_atomic_state_alloc(dev);
-	if (!state)
-		return ERR_PTR(-ENOMEM);
-
-	state->acquire_ctx = ctx;
-
-	drm_for_each_crtc(crtc, dev) {
-		struct drm_crtc_state *crtc_state;
-
-		crtc_state = drm_atomic_get_crtc_state(state, crtc);
-		if (IS_ERR(crtc_state)) {
-			err = PTR_ERR(crtc_state);
-			goto free;
-		}
-	}
-
-	drm_for_each_plane(plane, dev) {
-		struct drm_plane_state *plane_state;
-
-		plane_state = drm_atomic_get_plane_state(state, plane);
-		if (IS_ERR(plane_state)) {
-			err = PTR_ERR(plane_state);
-			goto free;
-		}
-	}
-
-	drm_connector_list_iter_begin(dev, &conn_iter);
-	drm_for_each_connector_iter(conn, &conn_iter) {
-		struct drm_connector_state *conn_state;
-
-		conn_state = drm_atomic_get_connector_state(state, conn);
-		if (IS_ERR(conn_state)) {
-			err = PTR_ERR(conn_state);
-			drm_connector_list_iter_end(&conn_iter);
-			goto free;
-		}
-	}
-	drm_connector_list_iter_end(&conn_iter);
-
-	/* clear the acquire context so that it isn't accidentally reused */
-	state->acquire_ctx = NULL;
-
-free:
-	if (err < 0) {
-		drm_atomic_state_put(state);
-		state = ERR_PTR(err);
-	}
-
-	return state;
-}
-EXPORT_SYMBOL(drm_atomic_helper_duplicate_state);
-
 /**
  * __drm_atomic_helper_connector_destroy_state - release connector state
  * @state: connector state object to release
@@ -515,76 +428,6 @@ void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector,
 }
 EXPORT_SYMBOL(drm_atomic_helper_connector_destroy_state);
 
-/**
- * drm_atomic_helper_legacy_gamma_set - set the legacy gamma correction table
- * @crtc: CRTC object
- * @red: red correction table
- * @green: green correction table
- * @blue: green correction table
- * @size: size of the tables
- * @ctx: lock acquire context
- *
- * Implements support for legacy gamma correction table for drivers
- * that support color management through the DEGAMMA_LUT/GAMMA_LUT
- * properties. See drm_crtc_enable_color_mgmt() and the containing chapter for
- * how the atomic color management and gamma tables work.
- */
-int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc,
-				       u16 *red, u16 *green, u16 *blue,
-				       uint32_t size,
-				       struct drm_modeset_acquire_ctx *ctx)
-{
-	struct drm_device *dev = crtc->dev;
-	struct drm_atomic_state *state;
-	struct drm_crtc_state *crtc_state;
-	struct drm_property_blob *blob = NULL;
-	struct drm_color_lut *blob_data;
-	int i, ret = 0;
-	bool replaced;
-
-	state = drm_atomic_state_alloc(crtc->dev);
-	if (!state)
-		return -ENOMEM;
-
-	blob = drm_property_create_blob(dev,
-					sizeof(struct drm_color_lut) * size,
-					NULL);
-	if (IS_ERR(blob)) {
-		ret = PTR_ERR(blob);
-		blob = NULL;
-		goto fail;
-	}
-
-	/* Prepare GAMMA_LUT with the legacy values. */
-	blob_data = blob->data;
-	for (i = 0; i < size; i++) {
-		blob_data[i].red = red[i];
-		blob_data[i].green = green[i];
-		blob_data[i].blue = blue[i];
-	}
-
-	state->acquire_ctx = ctx;
-	crtc_state = drm_atomic_get_crtc_state(state, crtc);
-	if (IS_ERR(crtc_state)) {
-		ret = PTR_ERR(crtc_state);
-		goto fail;
-	}
-
-	/* Reset DEGAMMA_LUT and CTM properties. */
-	replaced  = drm_property_replace_blob(&crtc_state->degamma_lut, NULL);
-	replaced |= drm_property_replace_blob(&crtc_state->ctm, NULL);
-	replaced |= drm_property_replace_blob(&crtc_state->gamma_lut, blob);
-	crtc_state->color_mgmt_changed |= replaced;
-
-	ret = drm_atomic_commit(state);
-
-fail:
-	drm_atomic_state_put(state);
-	drm_property_blob_put(blob);
-	return ret;
-}
-EXPORT_SYMBOL(drm_atomic_helper_legacy_gamma_set);
-
 /**
  * __drm_atomic_helper_private_duplicate_state - copy atomic private state
  * @obj: CRTC object

include/drm/drm_atomic_helper.h

@@ -127,6 +127,9 @@ int __drm_atomic_helper_set_config(struct drm_mode_set *set,
 int drm_atomic_helper_disable_all(struct drm_device *dev,
 				  struct drm_modeset_acquire_ctx *ctx);
 void drm_atomic_helper_shutdown(struct drm_device *dev);
+struct drm_atomic_state *
+drm_atomic_helper_duplicate_state(struct drm_device *dev,
+				  struct drm_modeset_acquire_ctx *ctx);
 struct drm_atomic_state *drm_atomic_helper_suspend(struct drm_device *dev);
 int drm_atomic_helper_commit_duplicated_state(struct drm_atomic_state *state,
 					      struct drm_modeset_acquire_ctx *ctx);
@@ -145,6 +148,10 @@ int drm_atomic_helper_page_flip_target(
 				uint32_t flags,
 				uint32_t target,
 				struct drm_modeset_acquire_ctx *ctx);
+int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc,
+				       u16 *red, u16 *green, u16 *blue,
+				       uint32_t size,
+				       struct drm_modeset_acquire_ctx *ctx);
 
 /**
  * drm_atomic_crtc_for_each_plane - iterate over planes currently attached to CRTC

include/drm/drm_atomic_state_helper.h

@@ -65,16 +65,9 @@ __drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector,
 					   struct drm_connector_state *state);
 struct drm_connector_state *
 drm_atomic_helper_connector_duplicate_state(struct drm_connector *connector);
-struct drm_atomic_state *
-drm_atomic_helper_duplicate_state(struct drm_device *dev,
-				  struct drm_modeset_acquire_ctx *ctx);
 void
 __drm_atomic_helper_connector_destroy_state(struct drm_connector_state *state);
 void drm_atomic_helper_connector_destroy_state(struct drm_connector *connector,
 					  struct drm_connector_state *state);
-int drm_atomic_helper_legacy_gamma_set(struct drm_crtc *crtc,
-				       u16 *red, u16 *green, u16 *blue,
-				       uint32_t size,
-				       struct drm_modeset_acquire_ctx *ctx);
 void __drm_atomic_helper_private_obj_duplicate_state(struct drm_private_obj *obj,
 						     struct drm_private_state *state);