Let's create a DRM-managed variant of drmm_writeback_connector_init that
will take care of an action of the encoder and connector cleanup.
Signed-off-by: Maxime Ripard <max...@cerno.tech>
---
drivers/gpu/drm/drm_writeback.c | 136 ++++++++++++++++++++++++--------
include/drm/drm_writeback.h | 5 ++
2 files changed, 108 insertions(+), 33 deletions(-)
diff --git a/drivers/gpu/drm/drm_writeback.c b/drivers/gpu/drm/drm_writeback.c
index dccf4504f1bb..0b00921f3379 100644
--- a/drivers/gpu/drm/drm_writeback.c
+++ b/drivers/gpu/drm/drm_writeback.c
@@ -149,32 +149,27 @@ static const struct drm_encoder_funcs
drm_writeback_encoder_funcs = {
.destroy = drm_encoder_cleanup,
};
-/**
- * drm_writeback_connector_init - Initialize a writeback connector and its
properties
- * @dev: DRM device
- * @wb_connector: Writeback connector to initialize
- * @con_funcs: Connector funcs vtable
- * @enc_helper_funcs: Encoder helper funcs vtable to be used by the internal
encoder
- * @formats: Array of supported pixel formats for the writeback engine
- * @n_formats: Length of the formats array
- *
- * This function creates the writeback-connector-specific properties if they
- * have not been already created, initializes the connector as
- * type DRM_MODE_CONNECTOR_WRITEBACK, and correctly initializes the property
- * values. It will also create an internal encoder associated with the
- * drm_writeback_connector and set it to use the @enc_helper_funcs vtable for
- * the encoder helper.
- *
- * Drivers should always use this function instead of drm_connector_init() to
- * set up writeback connectors.
- *
- * Returns: 0 on success, or a negative error code
- */
-int drm_writeback_connector_init(struct drm_device *dev,
- struct drm_writeback_connector *wb_connector,
- const struct drm_connector_funcs *con_funcs,
- const struct drm_encoder_helper_funcs
*enc_helper_funcs,
- const u32 *formats, int n_formats)
+typedef int (*encoder_init_t)(struct drm_device *dev,
+ struct drm_encoder *encoder,
+ const struct drm_encoder_funcs *funcs,
+ int encoder_type,
+ const char *name, ...);
+
+typedef int (*connector_init_t)(struct drm_device *dev,
+ struct drm_connector *connector,
+ const struct drm_connector_funcs *funcs,
+ int connector_type);
+
+static int writeback_init(struct drm_device *dev,
+ struct drm_writeback_connector *wb_connector,
+ connector_init_t conn_init,
+ void (*conn_destroy)(struct drm_connector *connector),
+ encoder_init_t enc_init,
+ void (*enc_destroy)(struct drm_encoder *encoder),
+ const struct drm_connector_funcs *con_funcs,
+ const struct drm_encoder_funcs *enc_funcs,
+ const struct drm_encoder_helper_funcs
*enc_helper_funcs,
+ const u32 *formats, int n_formats)
{
struct drm_property_blob *blob;
struct drm_connector *connector = &wb_connector->base;
@@ -190,16 +185,16 @@ int drm_writeback_connector_init(struct drm_device *dev,
return PTR_ERR(blob);
drm_encoder_helper_add(&wb_connector->encoder, enc_helper_funcs);
- ret = drm_encoder_init(dev, &wb_connector->encoder,
- &drm_writeback_encoder_funcs,
- DRM_MODE_ENCODER_VIRTUAL, NULL);
+ ret = enc_init(dev, &wb_connector->encoder,
+ enc_funcs,
+ DRM_MODE_ENCODER_VIRTUAL, NULL);
if (ret)
goto fail;
connector->interlace_allowed = 0;
- ret = drm_connector_init(dev, connector, con_funcs,
- DRM_MODE_CONNECTOR_WRITEBACK);
+ ret = conn_init(dev, connector, con_funcs,
+ DRM_MODE_CONNECTOR_WRITEBACK);
if (ret)
goto connector_fail;
@@ -231,15 +226,90 @@ int drm_writeback_connector_init(struct drm_device *dev,
return 0;
attach_fail:
- drm_connector_cleanup(connector);
+ if (conn_destroy)
+ conn_destroy(connector);
connector_fail:
- drm_encoder_cleanup(&wb_connector->encoder);
+ if (enc_destroy)
+ enc_destroy(&wb_connector->encoder);
fail:
drm_property_blob_put(blob);
return ret;
}
+
+/**
+ * drm_writeback_connector_init - Initialize a writeback connector and its
properties
+ * @dev: DRM device
+ * @wb_connector: Writeback connector to initialize
+ * @con_funcs: Connector funcs vtable
+ * @enc_helper_funcs: Encoder helper funcs vtable to be used by the internal
encoder
+ * @formats: Array of supported pixel formats for the writeback engine
+ * @n_formats: Length of the formats array
+ *
+ * This function creates the writeback-connector-specific properties if they
+ * have not been already created, initializes the connector as
+ * type DRM_MODE_CONNECTOR_WRITEBACK, and correctly initializes the property
+ * values. It will also create an internal encoder associated with the
+ * drm_writeback_connector and set it to use the @enc_helper_funcs vtable for
+ * the encoder helper.
+ *
+ * Drivers should always use this function instead of drm_connector_init() to
+ * set up writeback connectors.
+ *
+ * Returns: 0 on success, or a negative error code
+ */
+int drm_writeback_connector_init(struct drm_device *dev,
+ struct drm_writeback_connector *wb_connector,
+ const struct drm_connector_funcs *con_funcs,
+ const struct drm_encoder_helper_funcs
*enc_helper_funcs,
+ const u32 *formats, int n_formats)
+{
+ return writeback_init(dev, wb_connector,
+ drm_connector_init, drm_connector_cleanup,
+ drm_encoder_init, drm_encoder_cleanup,
+ con_funcs,
+ &drm_writeback_encoder_funcs, enc_helper_funcs,
+ formats, n_formats);
+}
EXPORT_SYMBOL(drm_writeback_connector_init);
+/**
+ * drmm_writeback_connector_init - Initialize a writeback connector and its
properties
+ * @dev: DRM device
+ * @wb_connector: Writeback connector to initialize
+ * @con_funcs: Connector funcs vtable
+ * @enc_helper_funcs: Encoder helper funcs vtable to be used by the internal
encoder
+ * @formats: Array of supported pixel formats for the writeback engine
+ * @n_formats: Length of the formats array
+ *
+ * This function creates the writeback-connector-specific properties if they
+ * have not been already created, initializes the connector as
+ * type DRM_MODE_CONNECTOR_WRITEBACK, and correctly initializes the property
+ * values. It will also create an internal encoder associated with the
+ * drm_writeback_connector and set it to use the @enc_helper_funcs vtable for
+ * the encoder helper.
+ *
+ * The writeback connector is DRM-managed and won't need any cleanup.
+ *
+ * Drivers should always use this function instead of drm_connector_init() to
+ * set up writeback connectors.
+ *
+ * Returns: 0 on success, or a negative error code
+ */
+int drmm_writeback_connector_init(struct drm_device *dev,
+ struct drm_writeback_connector *wb_connector,
+ const struct drm_connector_funcs *con_funcs,
+ const struct drm_encoder_helper_funcs
*enc_helper_funcs,
+ const u32 *formats, int n_formats)
+{
+ return writeback_init(dev, wb_connector,
+ drmm_connector_init, NULL,
+ drmm_encoder_init, NULL,
+ con_funcs,
+ NULL, enc_helper_funcs,
+ formats, n_formats);
+}
+EXPORT_SYMBOL(drmm_writeback_connector_init);
+
int drm_writeback_set_fb(struct drm_connector_state *conn_state,
struct drm_framebuffer *fb)
{
diff --git a/include/drm/drm_writeback.h b/include/drm/drm_writeback.h
index 9697d2714d2a..cc259ae44734 100644
--- a/include/drm/drm_writeback.h
+++ b/include/drm/drm_writeback.h
@@ -151,6 +151,11 @@ int drm_writeback_connector_init(struct drm_device *dev,
const struct drm_connector_funcs *con_funcs,
const struct drm_encoder_helper_funcs
*enc_helper_funcs,
const u32 *formats, int n_formats);
+int drmm_writeback_connector_init(struct drm_device *dev,
+ struct drm_writeback_connector *wb_connector,
+ const struct drm_connector_funcs *con_funcs,
+ const struct drm_encoder_helper_funcs
*enc_helper_funcs,
+ const u32 *formats, int n_formats);
int drm_writeback_set_fb(struct drm_connector_state *conn_state,
struct drm_framebuffer *fb);
--
2.36.1
