1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
|
/*
* Copyright (C) 2012 Red Hat
*
* This file is subject to the terms and conditions of the GNU General Public
* License v2. See the file COPYING in the main directory of this archive for
* more details.
*/
#include <linux/module.h>
#include <drm/drm_usb.h>
#include <drm/drm_crtc_helper.h>
#include "udl_drv.h"
static struct drm_driver driver;
/*
* There are many DisplayLink-based graphics products, all with unique PIDs.
* So we match on DisplayLink's VID + Vendor-Defined Interface Class (0xff)
* We also require a match on SubClass (0x00) and Protocol (0x00),
* which is compatible with all known USB 2.0 era graphics chips and firmware,
* but allows DisplayLink to increment those for any future incompatible chips
*/
static struct usb_device_id id_table[] = {
{.idVendor = 0x17e9, .bInterfaceClass = 0xff,
.bInterfaceSubClass = 0x00,
.bInterfaceProtocol = 0x00,
.match_flags = USB_DEVICE_ID_MATCH_VENDOR |
USB_DEVICE_ID_MATCH_INT_CLASS |
USB_DEVICE_ID_MATCH_INT_SUBCLASS |
USB_DEVICE_ID_MATCH_INT_PROTOCOL,},
{},
};
MODULE_DEVICE_TABLE(usb, id_table);
MODULE_LICENSE("GPL");
static int udl_usb_probe(struct usb_interface *interface,
const struct usb_device_id *id)
{
return drm_get_usb_dev(interface, id, &driver);
}
static void udl_usb_disconnect(struct usb_interface *interface)
{
struct drm_device *dev = usb_get_intfdata(interface);
drm_kms_helper_poll_disable(dev);
drm_connector_unplug_all(dev);
udl_fbdev_unplug(dev);
udl_drop_usb(dev);
drm_unplug_dev(dev);
}
static const struct vm_operations_struct udl_gem_vm_ops = {
.fault = udl_gem_fault,
.open = drm_gem_vm_open,
.close = drm_gem_vm_close,
};
static const struct file_operations udl_driver_fops = {
.owner = THIS_MODULE,
.open = drm_open,
.mmap = udl_drm_gem_mmap,
.poll = drm_poll,
.read = drm_read,
.unlocked_ioctl = drm_ioctl,
.release = drm_release,
#ifdef CONFIG_COMPAT
.compat_ioctl = drm_compat_ioctl,
#endif
.llseek = noop_llseek,
};
static struct drm_driver driver = {
.driver_features = DRIVER_MODESET | DRIVER_GEM | DRIVER_PRIME,
.load = udl_driver_load,
.unload = udl_driver_unload,
/* gem hooks */
.gem_init_object = udl_gem_init_object,
.gem_free_object = udl_gem_free_object,
.gem_vm_ops = &udl_gem_vm_ops,
.dumb_create = udl_dumb_create,
.dumb_map_offset = udl_gem_mmap,
.dumb_destroy = drm_gem_dumb_destroy,
.fops = &udl_driver_fops,
.prime_fd_to_handle = drm_gem_prime_fd_to_handle,
.gem_prime_import = udl_gem_prime_import,
.name = DRIVER_NAME,
.desc = DRIVER_DESC,
.date = DRIVER_DATE,
.major = DRIVER_MAJOR,
.minor = DRIVER_MINOR,
.patchlevel = DRIVER_PATCHLEVEL,
};
static struct usb_driver udl_driver = {
.name = "udl",
.probe = udl_usb_probe,
.disconnect = udl_usb_disconnect,
.id_table = id_table,
};
static int __init udl_init(void)
{
return drm_usb_init(&driver, &udl_driver);
}
static void __exit udl_exit(void)
{
drm_usb_exit(&driver, &udl_driver);
}
module_init(udl_init);
module_exit(udl_exit);
|
