[media] v4l2-mc: add a routine to create USB media_device
Instead of copying exactly the same code on all USB devices,
add an ancillary routine that will create and fill the
struct media_device with the values imported from the USB
device.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
diff --git a/include/media/v4l2-mc.h b/include/media/v4l2-mc.h
index 20f1ee2..79d84bb 100644
--- a/include/media/v4l2-mc.h
+++ b/include/media/v4l2-mc.h
@@ -95,8 +95,9 @@
DEMOD_NUM_PADS
};
-
-struct pci_dev; /* We don't need to include pci.h here */
+/* We don't need to include pci.h or usb.h here */
+struct pci_dev;
+struct usb_device;
#ifdef CONFIG_MEDIA_CONTROLLER
/**
@@ -124,8 +125,24 @@
* name for the pci device, given by pci_name() macro.
*/
struct media_device *v4l2_mc_pci_media_device_init(struct pci_dev *pci_dev,
- char *name);
-
+ const char *name);
+/**
+ * __v4l2_mc_usb_media_device_init() - create and initialize a
+ * struct &media_device from a PCI device.
+ *
+ * @udev: pointer to struct usb_device
+ * @board_name: media device name. If %NULL, the routine will use the usb
+ * product name, if available.
+ * @driver_name: name of the driver. if %NULL, the routine will use the name
+ * given by udev->dev->driver->name, with is usually the wrong
+ * thing to do.
+ *
+ * NOTE: It is better to call v4l2_mc_usb_media_device_init() instead, as
+ * such macro fills driver_name with %KBUILD_MODNAME.
+ */
+struct media_device *__v4l2_mc_usb_media_device_init(struct usb_device *udev,
+ const char *board_name,
+ const char *driver_name);
#else
static inline int v4l2_mc_create_media_graph(struct media_device *mdev)
@@ -133,11 +150,23 @@
return 0;
}
+static inline
struct media_device *v4l2_mc_pci_media_device_init(struct pci_dev *pci_dev,
- char *name) {
+ char *name)
+{
return NULL;
}
+static inline
+struct media_device *__v4l2_mc_usb_media_device_init(struct usb_device *udev,
+ char *board_name,
+ char *driver_name)
+{
+ return NULL;
+}
#endif
+#define v4l2_mc_usb_media_device_init(udev, name) \
+ __v4l2_mc_usb_media_device_init(udev, name, KBUILD_MODNAME)
+
#endif