drm/radeon: don't allow audio on DCE6
[linux-2.6.git] / drivers / gpu / drm / drm_usb.c
1 #include "drmP.h"
2 #include <linux/usb.h>
3 #include <linux/module.h>
4
5 int 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 = &interface->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
62 err_g3:
63         drm_put_minor(&dev->primary);
64 err_g2:
65         drm_put_minor(&dev->control);
66 err_g1:
67         kfree(dev);
68         mutex_unlock(&drm_global_mutex);
69         return ret;
70
71 }
72 EXPORT_SYMBOL(drm_get_usb_dev);
73
74 static int drm_usb_get_irq(struct drm_device *dev)
75 {
76         return 0;
77 }
78
79 static const char *drm_usb_get_name(struct drm_device *dev)
80 {
81         return "USB";
82 }
83
84 static int drm_usb_set_busid(struct drm_device *dev,
85                                struct drm_master *master)
86 {
87         return 0;
88 }
89
90 static 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     
97 int 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 }
109 EXPORT_SYMBOL(drm_usb_init);
110
111 void drm_usb_exit(struct drm_driver *driver,
112                   struct usb_driver *udriver)
113 {
114         usb_deregister(udriver);
115 }
116 EXPORT_SYMBOL(drm_usb_exit);
117
118 MODULE_AUTHOR("David Airlie");
119 MODULE_DESCRIPTION("USB DRM support");
120 MODULE_LICENSE("GPL and additional rights");