1#include "drmP.h"
 
  2#include <linux/usb.h>
 
  3
  4#ifdef CONFIG_USB
  5int drm_get_usb_dev(struct usb_interface *interface,
  6		    const struct usb_device_id *id,
  7		    struct drm_driver *driver)
  8{
  9	struct drm_device *dev;
 10	struct usb_device *usbdev;
 11	int ret;
 12
 13	DRM_DEBUG("\n");
 14
 15	dev = kzalloc(sizeof(*dev), GFP_KERNEL);
 16	if (!dev)
 17		return -ENOMEM;
 18
 19	usbdev = interface_to_usbdev(interface);
 20	dev->usbdev = usbdev;
 21	dev->dev = &usbdev->dev;
 22
 23	mutex_lock(&drm_global_mutex);
 24
 25	ret = drm_fill_in_dev(dev, NULL, driver);
 26	if (ret) {
 27		printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
 28		goto err_g1;
 29	}
 30
 31	usb_set_intfdata(interface, dev);
 32	ret = drm_get_minor(dev, &dev->control, DRM_MINOR_CONTROL);
 33	if (ret)
 34		goto err_g1;
 35
 36	ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY);
 37	if (ret)
 38		goto err_g2;
 39
 40	if (dev->driver->load) {
 41		ret = dev->driver->load(dev, 0);
 42		if (ret)
 43			goto err_g3;
 44	}
 45
 46	/* setup the grouping for the legacy output */
 47	ret = drm_mode_group_init_legacy_group(dev,
 48					       &dev->primary->mode_group);
 49	if (ret)
 50		goto err_g3;
 51
 52	list_add_tail(&dev->driver_item, &driver->device_list);
 53
 54	mutex_unlock(&drm_global_mutex);
 55
 56	DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
 57		 driver->name, driver->major, driver->minor, driver->patchlevel,
 58		 driver->date, dev->primary->index);
 59
 60	return 0;
 61
 62err_g3:
 63	drm_put_minor(&dev->primary);
 64err_g2:
 65	drm_put_minor(&dev->control);
 66err_g1:
 67	kfree(dev);
 68	mutex_unlock(&drm_global_mutex);
 69	return ret;
 70
 71}
 72EXPORT_SYMBOL(drm_get_usb_dev);
 73
 74static int drm_usb_get_irq(struct drm_device *dev)
 75{
 76	return 0;
 77}
 78
 79static const char *drm_usb_get_name(struct drm_device *dev)
 80{
 81	return "USB";
 82}
 83
 84static int drm_usb_set_busid(struct drm_device *dev,
 85			       struct drm_master *master)
 86{
 87	return 0;
 88}
 89
 90static struct drm_bus drm_usb_bus = {
 91	.bus_type = DRIVER_BUS_USB,
 92	.get_irq = drm_usb_get_irq,
 93	.get_name = drm_usb_get_name,
 94	.set_busid = drm_usb_set_busid,
 95};
 96    
 97int drm_usb_init(struct drm_driver *driver, struct usb_driver *udriver)
 98{
 99	int res;
100	DRM_DEBUG("\n");
101
102	INIT_LIST_HEAD(&driver->device_list);
103	driver->kdriver.usb = udriver;
104	driver->bus = &drm_usb_bus;
105
106	res = usb_register(udriver);
107	return res;
108}
109EXPORT_SYMBOL(drm_usb_init);
110
111void drm_usb_exit(struct drm_driver *driver,
112		  struct usb_driver *udriver)
113{
114	usb_deregister(udriver);
115}
116EXPORT_SYMBOL(drm_usb_exit);
117#endif
 
 
 

 1#include <drm/drmP.h>
 2#include <drm/drm_usb.h>
 3#include <linux/usb.h>
 4#include <linux/module.h>
 5
 
 6int drm_get_usb_dev(struct usb_interface *interface,
 7		    const struct usb_device_id *id,
 8		    struct drm_driver *driver)
 9{
10	struct drm_device *dev;
 
11	int ret;
12
13	DRM_DEBUG("\n");
14
15	dev = drm_dev_alloc(driver, &interface->dev);
16	if (!dev)
17		return -ENOMEM;
18
19	dev->usbdev = interface_to_usbdev(interface);
 
 
 
 
 
 
 
 
 
 
 
20	usb_set_intfdata(interface, dev);
 
 
 
 
 
 
 
21
22	ret = drm_dev_register(dev, 0);
 
 
 
 
 
 
 
 
23	if (ret)
24		goto err_free;
 
 
 
 
25
26	DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
27		 driver->name, driver->major, driver->minor, driver->patchlevel,
28		 driver->date, dev->primary->index);
29
30	return 0;
31
32err_free:
33	drm_dev_unref(dev);
 
 
 
 
 
34	return ret;
35
36}
37EXPORT_SYMBOL(drm_get_usb_dev);
38
39static int drm_usb_get_irq(struct drm_device *dev)
40{
41	return 0;
42}
43
44static const char *drm_usb_get_name(struct drm_device *dev)
45{
46	return "USB";
47}
48
49static int drm_usb_set_busid(struct drm_device *dev,
50			       struct drm_master *master)
51{
52	return 0;
53}
54
55static struct drm_bus drm_usb_bus = {
56	.bus_type = DRIVER_BUS_USB,
57	.get_irq = drm_usb_get_irq,
58	.get_name = drm_usb_get_name,
59	.set_busid = drm_usb_set_busid,
60};
61    
62int drm_usb_init(struct drm_driver *driver, struct usb_driver *udriver)
63{
64	int res;
65	DRM_DEBUG("\n");
66
 
67	driver->kdriver.usb = udriver;
68	driver->bus = &drm_usb_bus;
69
70	res = usb_register(udriver);
71	return res;
72}
73EXPORT_SYMBOL(drm_usb_init);
74
75void drm_usb_exit(struct drm_driver *driver,
76		  struct usb_driver *udriver)
77{
78	usb_deregister(udriver);
79}
80EXPORT_SYMBOL(drm_usb_exit);
81
82MODULE_AUTHOR("David Airlie");
83MODULE_DESCRIPTION("USB DRM support");
84MODULE_LICENSE("GPL and additional rights");