mirror of
https://github.com/torvalds/linux.git
synced 2024-11-17 17:41:44 +00:00
117 lines
2.3 KiB
C
117 lines
2.3 KiB
C
#include "drmP.h"
|
|
#include <linux/usb.h>
|
|
#include <linux/export.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);
|