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path: root/drivers/gpu/drm/udl/udl_drv.c
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Diffstat (limited to 'drivers/gpu/drm/udl/udl_drv.c')
-rw-r--r--drivers/gpu/drm/udl/udl_drv.c102
1 files changed, 59 insertions, 43 deletions
diff --git a/drivers/gpu/drm/udl/udl_drv.c b/drivers/gpu/drm/udl/udl_drv.c
index 06675e5d4342..8607e9e513db 100644
--- a/drivers/gpu/drm/udl/udl_drv.c
+++ b/drivers/gpu/drm/udl/udl_drv.c
@@ -7,55 +7,15 @@
7 */ 7 */
8 8
9#include <linux/module.h> 9#include <linux/module.h>
10#include <drm/drm_usb.h> 10#include <drm/drmP.h>
11#include <drm/drm_crtc_helper.h> 11#include <drm/drm_crtc_helper.h>
12#include "udl_drv.h" 12#include "udl_drv.h"
13 13
14static struct drm_driver driver;
15
16/*
17 * There are many DisplayLink-based graphics products, all with unique PIDs.
18 * So we match on DisplayLink's VID + Vendor-Defined Interface Class (0xff)
19 * We also require a match on SubClass (0x00) and Protocol (0x00),
20 * which is compatible with all known USB 2.0 era graphics chips and firmware,
21 * but allows DisplayLink to increment those for any future incompatible chips
22 */
23static struct usb_device_id id_table[] = {
24 {.idVendor = 0x17e9, .bInterfaceClass = 0xff,
25 .bInterfaceSubClass = 0x00,
26 .bInterfaceProtocol = 0x00,
27 .match_flags = USB_DEVICE_ID_MATCH_VENDOR |
28 USB_DEVICE_ID_MATCH_INT_CLASS |
29 USB_DEVICE_ID_MATCH_INT_SUBCLASS |
30 USB_DEVICE_ID_MATCH_INT_PROTOCOL,},
31 {},
32};
33MODULE_DEVICE_TABLE(usb, id_table);
34
35MODULE_LICENSE("GPL");
36
37static int udl_driver_set_busid(struct drm_device *d, struct drm_master *m) 14static int udl_driver_set_busid(struct drm_device *d, struct drm_master *m)
38{ 15{
39 return 0; 16 return 0;
40} 17}
41 18
42static int udl_usb_probe(struct usb_interface *interface,
43 const struct usb_device_id *id)
44{
45 return drm_get_usb_dev(interface, id, &driver);
46}
47
48static void udl_usb_disconnect(struct usb_interface *interface)
49{
50 struct drm_device *dev = usb_get_intfdata(interface);
51
52 drm_kms_helper_poll_disable(dev);
53 drm_connector_unplug_all(dev);
54 udl_fbdev_unplug(dev);
55 udl_drop_usb(dev);
56 drm_unplug_dev(dev);
57}
58
59static const struct vm_operations_struct udl_gem_vm_ops = { 19static const struct vm_operations_struct udl_gem_vm_ops = {
60 .fault = udl_gem_fault, 20 .fault = udl_gem_fault,
61 .open = drm_gem_vm_open, 21 .open = drm_gem_vm_open,
@@ -102,6 +62,61 @@ static struct drm_driver driver = {
102 .patchlevel = DRIVER_PATCHLEVEL, 62 .patchlevel = DRIVER_PATCHLEVEL,
103}; 63};
104 64
65static int udl_usb_probe(struct usb_interface *interface,
66 const struct usb_device_id *id)
67{
68 struct usb_device *udev = interface_to_usbdev(interface);
69 struct drm_device *dev;
70 int r;
71
72 dev = drm_dev_alloc(&driver, &interface->dev);
73 if (!dev)
74 return -ENOMEM;
75
76 r = drm_dev_register(dev, (unsigned long)udev);
77 if (r)
78 goto err_free;
79
80 usb_set_intfdata(interface, dev);
81 DRM_INFO("Initialized udl on minor %d\n", dev->primary->index);
82
83 return 0;
84
85err_free:
86 drm_dev_unref(dev);
87 return r;
88}
89
90static void udl_usb_disconnect(struct usb_interface *interface)
91{
92 struct drm_device *dev = usb_get_intfdata(interface);
93
94 drm_kms_helper_poll_disable(dev);
95 drm_connector_unplug_all(dev);
96 udl_fbdev_unplug(dev);
97 udl_drop_usb(dev);
98 drm_unplug_dev(dev);
99}
100
101/*
102 * There are many DisplayLink-based graphics products, all with unique PIDs.
103 * So we match on DisplayLink's VID + Vendor-Defined Interface Class (0xff)
104 * We also require a match on SubClass (0x00) and Protocol (0x00),
105 * which is compatible with all known USB 2.0 era graphics chips and firmware,
106 * but allows DisplayLink to increment those for any future incompatible chips
107 */
108static struct usb_device_id id_table[] = {
109 {.idVendor = 0x17e9, .bInterfaceClass = 0xff,
110 .bInterfaceSubClass = 0x00,
111 .bInterfaceProtocol = 0x00,
112 .match_flags = USB_DEVICE_ID_MATCH_VENDOR |
113 USB_DEVICE_ID_MATCH_INT_CLASS |
114 USB_DEVICE_ID_MATCH_INT_SUBCLASS |
115 USB_DEVICE_ID_MATCH_INT_PROTOCOL,},
116 {},
117};
118MODULE_DEVICE_TABLE(usb, id_table);
119
105static struct usb_driver udl_driver = { 120static struct usb_driver udl_driver = {
106 .name = "udl", 121 .name = "udl",
107 .probe = udl_usb_probe, 122 .probe = udl_usb_probe,
@@ -111,13 +126,14 @@ static struct usb_driver udl_driver = {
111 126
112static int __init udl_init(void) 127static int __init udl_init(void)
113{ 128{
114 return drm_usb_init(&driver, &udl_driver); 129 return usb_register(&udl_driver);
115} 130}
116 131
117static void __exit udl_exit(void) 132static void __exit udl_exit(void)
118{ 133{
119 drm_usb_exit(&driver, &udl_driver); 134 usb_deregister(&udl_driver);
120} 135}
121 136
122module_init(udl_init); 137module_init(udl_init);
123module_exit(udl_exit); 138module_exit(udl_exit);
139MODULE_LICENSE("GPL");