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#include <drm/drmP.h>
#include <linux/usb.h>
#include <linux/module.h>
int drm_get_usb_dev(struct usb_interface *interface,
const struct usb_device_id *id,
struct drm_driver *driver)
{
struct drm_device *dev;
struct usb_device *usbdev;
int ret;
DRM_DEBUG("\n");
dev = kzalloc(sizeof(*dev), GFP_KERNEL);
if (!dev)
return -ENOMEM;
usbdev = interface_to_usbdev(interface);
dev->usbdev = usbdev;
dev->dev = &usbdev->dev;
mutex_lock(&drm_global_mutex);
ret = drm_fill_in_dev(dev, NULL, driver);
if (ret) {
printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
goto err_g1;
}
usb_set_intfdata(interface, dev);
ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
if (ret)
goto err_g1;
ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY);
if (ret)
goto err_g2;
if (dev->driver->load) {
ret = dev->driver->load(dev, 0);
if (ret)
goto err_g3;
}
/* setup the grouping for the legacy output */
ret = drm_mode_group_init_legacy_group(dev,
&dev->primary->mode_group);
if (ret)
goto err_g3;
list_add_tail(&dev->driver_item, &driver->device_list);
mutex_unlock(&drm_global_mutex);
DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
driver->name, driver->major, driver->minor, driver->patchlevel,
driver->date, dev->primary->index);
return 0;
err_g3:
drm_put_minor(&dev->primary);
err_g2:
drm_put_minor(&dev->control);
err_g1:
kfree(dev);
mutex_unlock(&drm_global_mutex);
return ret;
}
EXPORT_SYMBOL(drm_get_usb_dev);
static int drm_usb_get_irq(struct drm_device *dev)
{
return 0;
}
static const char *drm_usb_get_name(struct drm_device *dev)
{
return "USB";
}
static int drm_usb_set_busid(struct drm_device *dev,
struct drm_master *master)
{
return 0;
}
static struct drm_bus drm_usb_bus = {
.bus_type = DRIVER_BUS_USB,
.get_irq = drm_usb_get_irq,
.get_name = drm_usb_get_name,
.set_busid = drm_usb_set_busid,
};
int drm_usb_init(struct drm_driver *driver, struct usb_driver *udriver)
{
int res;
DRM_DEBUG("\n");
INIT_LIST_HEAD(&driver->device_list);
driver->kdriver.usb = udriver;
driver->bus = &drm_usb_bus;
res = usb_register(udriver);
return res;
}
EXPORT_SYMBOL(drm_usb_init);
void drm_usb_exit(struct drm_driver *driver,
struct usb_driver *udriver)
{
usb_deregister(udriver);
}
EXPORT_SYMBOL(drm_usb_exit);
MODULE_AUTHOR("David Airlie");
MODULE_DESCRIPTION("USB DRM support");
MODULE_LICENSE("GPL and additional rights");
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