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#include <linux/export.h>
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int drm_get_usb_dev(struct usb_interface *interface,
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const struct usb_device_id *id,
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struct drm_driver *driver)
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struct drm_device *dev;
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struct usb_device *usbdev;
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dev = kzalloc(sizeof(*dev), GFP_KERNEL);
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usbdev = interface_to_usbdev(interface);
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dev->dev = &usbdev->dev;
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mutex_lock(&drm_global_mutex);
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ret = drm_fill_in_dev(dev, NULL, driver);
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printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
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usb_set_intfdata(interface, dev);
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ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
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ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY);
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if (dev->driver->load) {
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ret = dev->driver->load(dev, 0);
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/* setup the grouping for the legacy output */
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ret = drm_mode_group_init_legacy_group(dev,
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&dev->primary->mode_group);
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list_add_tail(&dev->driver_item, &driver->device_list);
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mutex_unlock(&drm_global_mutex);
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DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
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driver->name, driver->major, driver->minor, driver->patchlevel,
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driver->date, dev->primary->index);
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drm_put_minor(&dev->primary);
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drm_put_minor(&dev->control);
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mutex_unlock(&drm_global_mutex);
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EXPORT_SYMBOL(drm_get_usb_dev);
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static int drm_usb_get_irq(struct drm_device *dev)
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static const char *drm_usb_get_name(struct drm_device *dev)
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static int drm_usb_set_busid(struct drm_device *dev,
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struct drm_master *master)
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static struct drm_bus drm_usb_bus = {
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.bus_type = DRIVER_BUS_USB,
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.get_irq = drm_usb_get_irq,
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.get_name = drm_usb_get_name,
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.set_busid = drm_usb_set_busid,
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int drm_usb_init(struct drm_driver *driver, struct usb_driver *udriver)
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INIT_LIST_HEAD(&driver->device_list);
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driver->kdriver.usb = udriver;
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driver->bus = &drm_usb_bus;
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res = usb_register(udriver);
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EXPORT_SYMBOL(drm_usb_init);
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void drm_usb_exit(struct drm_driver *driver,
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struct usb_driver *udriver)
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usb_deregister(udriver);
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EXPORT_SYMBOL(drm_usb_exit);