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Diffstat (limited to 'include/media/v4l2-device.h')
-rw-r--r--include/media/v4l2-device.h50
1 files changed, 46 insertions, 4 deletions
diff --git a/include/media/v4l2-device.h b/include/media/v4l2-device.h
index 7c912b7d2870..64ec4de948e9 100644
--- a/include/media/v4l2-device.h
+++ b/include/media/v4l2-device.h
@@ -174,14 +174,56 @@ int __must_check v4l2_device_register_subdev(struct v4l2_device *v4l2_dev,
void v4l2_device_unregister_subdev(struct v4l2_subdev *sd);
/**
- * v4l2_device_register_subdev_nodes - Registers device nodes for all subdevs
- * of the v4l2 device that are marked with
- * the %V4L2_SUBDEV_FL_HAS_DEVNODE flag.
+ * __v4l2_device_register_ro_subdev_nodes - Registers device nodes for
+ * all subdevs of the v4l2 device that are marked with the
+ * %V4L2_SUBDEV_FL_HAS_DEVNODE flag.
*
* @v4l2_dev: pointer to struct v4l2_device
+ * @read_only: subdevices read-only flag. True to register the subdevices
+ * device nodes in read-only mode, false to allow full access to the
+ * subdevice userspace API.
*/
int __must_check
-v4l2_device_register_subdev_nodes(struct v4l2_device *v4l2_dev);
+__v4l2_device_register_subdev_nodes(struct v4l2_device *v4l2_dev,
+ bool read_only);
+
+/**
+ * v4l2_device_register_subdev_nodes - Registers subdevices device nodes with
+ * unrestricted access to the subdevice userspace operations
+ *
+ * Internally calls __v4l2_device_register_subdev_nodes(). See its documentation
+ * for more details.
+ *
+ * @v4l2_dev: pointer to struct v4l2_device
+ */
+static inline int __must_check
+v4l2_device_register_subdev_nodes(struct v4l2_device *v4l2_dev)
+{
+#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
+ return __v4l2_device_register_subdev_nodes(v4l2_dev, false);
+#else
+ return 0;
+#endif
+}
+
+/**
+ * v4l2_device_register_ro_subdev_nodes - Registers subdevices device nodes
+ * in read-only mode
+ *
+ * Internally calls __v4l2_device_register_subdev_nodes(). See its documentation
+ * for more details.
+ *
+ * @v4l2_dev: pointer to struct v4l2_device
+ */
+static inline int __must_check
+v4l2_device_register_ro_subdev_nodes(struct v4l2_device *v4l2_dev)
+{
+#if defined(CONFIG_VIDEO_V4L2_SUBDEV_API)
+ return __v4l2_device_register_subdev_nodes(v4l2_dev, true);
+#else
+ return 0;
+#endif
+}
/**
* v4l2_subdev_notify - Sends a notification to v4l2_device.