@@ -61,7 +61,7 @@ static int subdev_open(struct file *file)
struct v4l2_subdev *sd = vdev_to_v4l2_subdev(vdev);
struct v4l2_subdev_fh *subdev_fh;
#if defined(CONFIG_MEDIA_CONTROLLER)
- struct media_entity *entity;
+ struct media_entity *entity = NULL;
#endif
int ret;
@@ -104,9 +104,17 @@ static int subdev_open(struct file *file)
}
#endif
+ ret = v4l2_subdev_call(sd, file, open, subdev_fh);
+ if (ret < 0 && ret != -ENOIOCTLCMD)
+ goto err;
+
return 0;
err:
+#if defined(CONFIG_MEDIA_CONTROLLER)
+ if (entity)
+ media_entity_put(entity);
+#endif
v4l2_fh_del(&subdev_fh->vfh);
v4l2_fh_exit(&subdev_fh->vfh);
subdev_fh_free(subdev_fh);
@@ -124,6 +132,7 @@ static int subdev_close(struct file *file)
struct v4l2_fh *vfh = file->private_data;
struct v4l2_subdev_fh *subdev_fh = to_v4l2_subdev_fh(vfh);
+ v4l2_subdev_call(sd, file, close, subdev_fh);
#if defined(CONFIG_MEDIA_CONTROLLER)
if (sd->v4l2_dev->mdev)
media_entity_put(&sd->entity);
@@ -175,6 +175,15 @@ struct v4l2_subdev_core_ops {
struct v4l2_event_subscription *sub);
};
+/* open: called when the subdev device node is opened by an application.
+
+ close: called when the subdev device node is close.
+ */
+struct v4l2_subdev_file_ops {
+ int (*open)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh);
+ int (*close)(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh);
+};
+
/* s_mode: switch the tuner to a specific tuner mode. Replacement of s_radio.
s_radio: v4l device was opened in Radio mode, to be replaced by s_mode.
@@ -416,6 +425,7 @@ struct v4l2_subdev_ir_ops {
struct v4l2_subdev_ops {
const struct v4l2_subdev_core_ops *core;
+ const struct v4l2_subdev_file_ops *file;
const struct v4l2_subdev_tuner_ops *tuner;
const struct v4l2_subdev_audio_ops *audio;
const struct v4l2_subdev_video_ops *video;