media: Revert "media: v4l2-fwnode: Add a convenience function for registering...

media: Revert "media: v4l2-fwnode: Add a convenience function for registering subdevs with notifiers"

The users of v4l2_async_register_fwnode_subdev() have switched to
parsing their endpoints and setting up async sub-device lists in their
notifiers locally, without using the endpoint parsing callbacks. There
are no more users of v4l2_async_register_fwnode_subdev() so this
convenience function can be removed.

This reverts commit 1634f0ed.
Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

drivers/media/v4l2-core/v4l2-fwnode.c

@@ -1323,68 +1323,6 @@ int v4l2_async_register_subdev_sensor_common(struct v4l2_subdev *sd)
 }
 EXPORT_SYMBOL_GPL(v4l2_async_register_subdev_sensor_common);
 
-int v4l2_async_register_fwnode_subdev(struct v4l2_subdev *sd,
-				      size_t asd_struct_size,
-				      unsigned int *ports,
-				      unsigned int num_ports,
-				      parse_endpoint_func parse_endpoint)
-{
-	struct v4l2_async_notifier *notifier;
-	struct device *dev = sd->dev;
-	struct fwnode_handle *fwnode;
-	int ret;
-
-	if (WARN_ON(!dev))
-		return -ENODEV;
-
-	fwnode = dev_fwnode(dev);
-	if (!fwnode_device_is_available(fwnode))
-		return -ENODEV;
-
-	notifier = kzalloc(sizeof(*notifier), GFP_KERNEL);
-	if (!notifier)
-		return -ENOMEM;
-
-	v4l2_async_notifier_init(notifier);
-
-	if (!ports) {
-		ret = v4l2_async_notifier_parse_fwnode_endpoints(dev, notifier,
-								 asd_struct_size,
-								 parse_endpoint);
-		if (ret < 0)
-			goto out_cleanup;
-	} else {
-		unsigned int i;
-
-		for (i = 0; i < num_ports; i++) {
-			ret = v4l2_async_notifier_parse_fwnode_endpoints_by_port(dev, notifier, asd_struct_size, ports[i], parse_endpoint);
-			if (ret < 0)
-				goto out_cleanup;
-		}
-	}
-
-	ret = v4l2_async_subdev_notifier_register(sd, notifier);
-	if (ret < 0)
-		goto out_cleanup;
-
-	ret = v4l2_async_register_subdev(sd);
-	if (ret < 0)
-		goto out_unregister;
-
-	sd->subdev_notifier = notifier;
-
-	return 0;
-
-out_unregister:
-	v4l2_async_notifier_unregister(notifier);
-out_cleanup:
-	v4l2_async_notifier_cleanup(notifier);
-	kfree(notifier);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(v4l2_async_register_fwnode_subdev);
-
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Sakari Ailus <sakari.ailus@linux.intel.com>");
 MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@samsung.com>");

include/media/v4l2-fwnode.h

@@ -20,7 +20,6 @@
 #include <linux/types.h>
 
 #include <media/v4l2-mediabus.h>
-#include <media/v4l2-subdev.h>
 
 struct fwnode_handle;
 struct v4l2_async_notifier;
@@ -490,43 +489,6 @@ v4l2_async_notifier_parse_fwnode_endpoints_by_port(struct device *dev,
 int v4l2_async_notifier_parse_fwnode_sensor_common(struct device *dev,
 						   struct v4l2_async_notifier *notifier);
 
-/**
- * v4l2_async_register_fwnode_subdev - registers a sub-device to the
- *					asynchronous sub-device framework
- *					and parses fwnode endpoints
- *
- * @sd: pointer to struct &v4l2_subdev
- * @asd_struct_size: size of the driver's async sub-device struct, including
- *		     sizeof(struct v4l2_async_subdev). The &struct
- *		     v4l2_async_subdev shall be the first member of
- *		     the driver's async sub-device struct, i.e. both
- *		     begin at the same memory address.
- * @ports: array of port id's to parse for fwnode endpoints. If NULL, will
- *	   parse all ports owned by the sub-device.
- * @num_ports: number of ports in @ports array. Ignored if @ports is NULL.
- * @parse_endpoint: Driver's callback function called on each V4L2 fwnode
- *		    endpoint. Optional.
- *
- * This function is just like v4l2_async_register_subdev() with the
- * exception that calling it will also allocate a notifier for the
- * sub-device, parse the sub-device's firmware node endpoints using
- * v4l2_async_notifier_parse_fwnode_endpoints() or
- * v4l2_async_notifier_parse_fwnode_endpoints_by_port(), and
- * registers the sub-device notifier. The sub-device is similarly
- * unregistered by calling v4l2_async_unregister_subdev().
- *
- * While registered, the subdev module is marked as in-use.
- *
- * An error is returned if the module is no longer loaded on any attempts
- * to register it.
- */
-int
-v4l2_async_register_fwnode_subdev(struct v4l2_subdev *sd,
-				  size_t asd_struct_size,
-				  unsigned int *ports,
-				  unsigned int num_ports,
-				  parse_endpoint_func parse_endpoint);
-
 /* Helper macros to access the connector links. */
 
 /** v4l2_connector_last_link - Helper macro to get the first