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authorMauro Carvalho Chehab <mchehab@osg.samsung.com>2016-02-11 15:21:46 -0200
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2016-02-16 08:38:59 -0200
commiteee7d353a19032b48c0f71504081de84a0ee79d8 (patch)
treea9161248e5606ee9ea2730e40c43c25dc1e2a3cd /drivers/media/v4l2-core
parentdb152276ce720baadcbd6bccebbeb17da001d312 (diff)
downloadop-kernel-dev-eee7d353a19032b48c0f71504081de84a0ee79d8.zip
op-kernel-dev-eee7d353a19032b48c0f71504081de84a0ee79d8.tar.gz
[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>
Diffstat (limited to 'drivers/media/v4l2-core')
-rw-r--r--drivers/media/v4l2-core/v4l2-mc.c41
1 files changed, 40 insertions, 1 deletions
diff --git a/drivers/media/v4l2-core/v4l2-mc.c b/drivers/media/v4l2-core/v4l2-mc.c
index b6cf6db..97b2e1e 100644
--- a/drivers/media/v4l2-core/v4l2-mc.c
+++ b/drivers/media/v4l2-core/v4l2-mc.c
@@ -16,12 +16,13 @@
#include <linux/module.h>
#include <linux/pci.h>
+#include <linux/usb.h>
#include <media/media-entity.h>
#include <media/v4l2-mc.h>
struct media_device *v4l2_mc_pci_media_device_init(struct pci_dev *pci_dev,
- char *name)
+ const char *name)
{
#ifdef CONFIG_PCI
struct media_device *mdev;
@@ -53,6 +54,44 @@ struct media_device *v4l2_mc_pci_media_device_init(struct pci_dev *pci_dev,
}
EXPORT_SYMBOL_GPL(v4l2_mc_pci_media_device_init);
+struct media_device *__v4l2_mc_usb_media_device_init(struct usb_device *udev,
+ const char *board_name,
+ const char *driver_name)
+{
+#ifdef CONFIG_USB
+ struct media_device *mdev;
+
+ mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
+ if (!mdev)
+ return NULL;
+
+ mdev->dev = &udev->dev;
+
+ if (driver_name)
+ strlcpy(mdev->driver_name, driver_name,
+ sizeof(mdev->driver_name));
+
+ if (board_name)
+ strlcpy(mdev->model, board_name, sizeof(mdev->model));
+ else if (udev->product)
+ strlcpy(mdev->model, udev->product, sizeof(mdev->model));
+ else
+ strlcpy(mdev->model, "unknown model", sizeof(mdev->model));
+ if (udev->serial)
+ strlcpy(mdev->serial, udev->serial, sizeof(mdev->serial));
+ usb_make_path(udev, mdev->bus_info, sizeof(mdev->bus_info));
+ mdev->hw_revision = le16_to_cpu(udev->descriptor.bcdDevice);
+ mdev->driver_version = LINUX_VERSION_CODE;
+
+ media_device_init(mdev);
+
+ return mdev;
+#else
+ return NULL;
+#endif
+}
+EXPORT_SYMBOL_GPL(__v4l2_mc_usb_media_device_init);
+
int v4l2_mc_create_media_graph(struct media_device *mdev)
{
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