diff options
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-mc.c | 41 | ||||
| -rw-r--r-- | include/media/v4l2-mc.h | 39 |
2 files changed, 74 insertions, 6 deletions
diff --git a/drivers/media/v4l2-core/v4l2-mc.c b/drivers/media/v4l2-core/v4l2-mc.c index b6cf6dbd4cd5..97b2e1e64d2e 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) { diff --git a/include/media/v4l2-mc.h b/include/media/v4l2-mc.h index 20f1ee285947..79d84bb3573c 100644 --- a/include/media/v4l2-mc.h +++ b/include/media/v4l2-mc.h @@ -95,8 +95,9 @@ enum demod_pad_index { 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 @@ int v4l2_mc_create_media_graph(struct media_device *mdev); * 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 @@ static inline int v4l2_mc_create_media_graph(struct media_device *mdev) 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 |