1 /*
2 * HID driver for some sunplus "special" devices
3 *
4 * Copyright (c) 1999 Andreas Gal
5 * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
6 * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
7 * Copyright (c) 2006-2007 Jiri Kosina
8 * Copyright (c) 2007 Paul Walmsley
9 * Copyright (c) 2008 Jiri Slaby
10 */
11
12 /*
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the Free
15 * Software Foundation; either version 2 of the License, or (at your option)
16 * any later version.
17 */
18
19 #include <linux/device.h>
20 #include <linux/hid.h>
21 #include <linux/module.h>
22
23 #include "hid-ids.h"
24
sp_report_fixup(struct hid_device * hdev,__u8 * rdesc,unsigned int rsize)25 static void sp_report_fixup(struct hid_device *hdev, __u8 *rdesc,
26 unsigned int rsize)
27 {
28 if (rsize >= 107 && rdesc[104] == 0x26 && rdesc[105] == 0x80 &&
29 rdesc[106] == 0x03) {
30 dev_info(&hdev->dev, "fixing up Sunplus Wireless Desktop "
31 "report descriptor\n");
32 rdesc[105] = rdesc[110] = 0x03;
33 rdesc[106] = rdesc[111] = 0x21;
34 }
35 }
36
37 #define sp_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
38 EV_KEY, (c))
sp_input_mapping(struct hid_device * hdev,struct hid_input * hi,struct hid_field * field,struct hid_usage * usage,unsigned long ** bit,int * max)39 static int sp_input_mapping(struct hid_device *hdev, struct hid_input *hi,
40 struct hid_field *field, struct hid_usage *usage,
41 unsigned long **bit, int *max)
42 {
43 if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
44 return 0;
45
46 switch (usage->hid & HID_USAGE) {
47 case 0x2003: sp_map_key_clear(KEY_ZOOMIN); break;
48 case 0x2103: sp_map_key_clear(KEY_ZOOMOUT); break;
49 default:
50 return 0;
51 }
52 return 1;
53 }
54
55 static const struct hid_device_id sp_devices[] = {
56 { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
57 { }
58 };
59 MODULE_DEVICE_TABLE(hid, sp_devices);
60
61 static struct hid_driver sp_driver = {
62 .name = "sunplus",
63 .id_table = sp_devices,
64 .report_fixup = sp_report_fixup,
65 .input_mapping = sp_input_mapping,
66 };
67
sp_init(void)68 static int sp_init(void)
69 {
70 return hid_register_driver(&sp_driver);
71 }
72
sp_exit(void)73 static void sp_exit(void)
74 {
75 hid_unregister_driver(&sp_driver);
76 }
77
78 module_init(sp_init);
79 module_exit(sp_exit);
80 MODULE_LICENSE("GPL");
81
82 HID_COMPAT_LOAD_DRIVER(sunplus);
83