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path: root/drivers/media/usb/au0828/au0828-core.c
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Diffstat (limited to 'drivers/media/usb/au0828/au0828-core.c')
-rw-r--r--drivers/media/usb/au0828/au0828-core.c98
1 files changed, 98 insertions, 0 deletions
diff --git a/drivers/media/usb/au0828/au0828-core.c b/drivers/media/usb/au0828/au0828-core.c
index 0934024fb89d..0378a2c99ebb 100644
--- a/drivers/media/usb/au0828/au0828-core.c
+++ b/drivers/media/usb/au0828/au0828-core.c
@@ -127,8 +127,22 @@ static int recv_control_msg(struct au0828_dev *dev, u16 request, u32 value,
return status;
}
+static void au0828_unregister_media_device(struct au0828_dev *dev)
+{
+
+#ifdef CONFIG_MEDIA_CONTROLLER
+ if (dev->media_dev) {
+ media_device_unregister(dev->media_dev);
+ kfree(dev->media_dev);
+ dev->media_dev = NULL;
+ }
+#endif
+}
+
static void au0828_usb_release(struct au0828_dev *dev)
{
+ au0828_unregister_media_device(dev);
+
/* I2C */
au0828_i2c_unregister(dev);
@@ -161,6 +175,8 @@ static void au0828_usb_disconnect(struct usb_interface *interface)
*/
dev->dev_state = DEV_DISCONNECTED;
+ au0828_unregister_media_device(dev);
+
au0828_rc_unregister(dev);
/* Digital TV */
au0828_dvb_unregister(dev);
@@ -180,6 +196,81 @@ static void au0828_usb_disconnect(struct usb_interface *interface)
au0828_usb_release(dev);
}
+static void au0828_media_device_register(struct au0828_dev *dev,
+ struct usb_device *udev)
+{
+#ifdef CONFIG_MEDIA_CONTROLLER
+ struct media_device *mdev;
+ int ret;
+
+ mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
+ if (!mdev)
+ return;
+
+ mdev->dev = &udev->dev;
+
+ if (!dev->board.name)
+ strlcpy(mdev->model, "unknown au0828", sizeof(mdev->model));
+ else
+ strlcpy(mdev->model, dev->board.name, sizeof(mdev->model));
+ if (udev->serial)
+ strlcpy(mdev->serial, udev->serial, sizeof(mdev->serial));
+ strcpy(mdev->bus_info, udev->devpath);
+ mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
+ mdev->driver_version = LINUX_VERSION_CODE;
+
+ ret = media_device_register(mdev);
+ if (ret) {
+ pr_err(
+ "Couldn't create a media device. Error: %d\n",
+ ret);
+ kfree(mdev);
+ return;
+ }
+
+ dev->media_dev = mdev;
+#endif
+}
+
+
+static void au0828_create_media_graph(struct au0828_dev *dev)
+{
+#ifdef CONFIG_MEDIA_CONTROLLER
+ struct media_device *mdev = dev->media_dev;
+ struct media_entity *entity;
+ struct media_entity *tuner = NULL, *decoder = NULL;
+
+ if (!mdev)
+ return;
+
+ media_device_for_each_entity(entity, mdev) {
+ switch (entity->type) {
+ case MEDIA_ENT_T_V4L2_SUBDEV_TUNER:
+ tuner = entity;
+ break;
+ case MEDIA_ENT_T_V4L2_SUBDEV_DECODER:
+ decoder = entity;
+ break;
+ }
+ }
+
+ /* Analog setup, using tuner as a link */
+
+ if (!decoder)
+ return;
+
+ if (tuner)
+ media_entity_create_link(tuner, 0, decoder, 0,
+ MEDIA_LNK_FL_ENABLED);
+ if (dev->vdev.entity.links)
+ media_entity_create_link(decoder, 1, &dev->vdev.entity, 0,
+ MEDIA_LNK_FL_ENABLED);
+ if (dev->vbi_dev.entity.links)
+ media_entity_create_link(decoder, 2, &dev->vbi_dev.entity, 0,
+ MEDIA_LNK_FL_ENABLED);
+#endif
+}
+
static int au0828_usb_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
@@ -224,11 +315,16 @@ static int au0828_usb_probe(struct usb_interface *interface,
dev->boardnr = id->driver_info;
dev->board = au0828_boards[dev->boardnr];
+ /* Register the media controller */
+ au0828_media_device_register(dev, usbdev);
#ifdef CONFIG_VIDEO_AU0828_V4L2
dev->v4l2_dev.release = au0828_usb_v4l2_release;
/* Create the v4l2_device */
+#ifdef CONFIG_MEDIA_CONTROLLER
+ dev->v4l2_dev.mdev = dev->media_dev;
+#endif
retval = v4l2_device_register(&interface->dev, &dev->v4l2_dev);
if (retval) {
pr_err("%s() v4l2_device_register failed\n",
@@ -287,6 +383,8 @@ static int au0828_usb_probe(struct usb_interface *interface,
mutex_unlock(&dev->lock);
+ au0828_create_media_graph(dev);
+
return retval;
}