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
*
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);
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
*
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
* @state: new private object state
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);
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
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);
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