1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * HID driver for some belkin "special" devices
4*4882a593Smuzhiyun *
5*4882a593Smuzhiyun * Copyright (c) 1999 Andreas Gal
6*4882a593Smuzhiyun * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
7*4882a593Smuzhiyun * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
8*4882a593Smuzhiyun * Copyright (c) 2006-2007 Jiri Kosina
9*4882a593Smuzhiyun * Copyright (c) 2008 Jiri Slaby
10*4882a593Smuzhiyun */
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun /*
13*4882a593Smuzhiyun */
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun #include <linux/device.h>
16*4882a593Smuzhiyun #include <linux/hid.h>
17*4882a593Smuzhiyun #include <linux/module.h>
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun #include "hid-ids.h"
20*4882a593Smuzhiyun
21*4882a593Smuzhiyun #define BELKIN_HIDDEV 0x01
22*4882a593Smuzhiyun #define BELKIN_WKBD 0x02
23*4882a593Smuzhiyun
24*4882a593Smuzhiyun #define belkin_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
25*4882a593Smuzhiyun EV_KEY, (c))
belkin_input_mapping(struct hid_device * hdev,struct hid_input * hi,struct hid_field * field,struct hid_usage * usage,unsigned long ** bit,int * max)26*4882a593Smuzhiyun static int belkin_input_mapping(struct hid_device *hdev, struct hid_input *hi,
27*4882a593Smuzhiyun struct hid_field *field, struct hid_usage *usage,
28*4882a593Smuzhiyun unsigned long **bit, int *max)
29*4882a593Smuzhiyun {
30*4882a593Smuzhiyun unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
31*4882a593Smuzhiyun
32*4882a593Smuzhiyun if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER ||
33*4882a593Smuzhiyun !(quirks & BELKIN_WKBD))
34*4882a593Smuzhiyun return 0;
35*4882a593Smuzhiyun
36*4882a593Smuzhiyun switch (usage->hid & HID_USAGE) {
37*4882a593Smuzhiyun case 0x03a: belkin_map_key_clear(KEY_SOUND); break;
38*4882a593Smuzhiyun case 0x03b: belkin_map_key_clear(KEY_CAMERA); break;
39*4882a593Smuzhiyun case 0x03c: belkin_map_key_clear(KEY_DOCUMENTS); break;
40*4882a593Smuzhiyun default:
41*4882a593Smuzhiyun return 0;
42*4882a593Smuzhiyun }
43*4882a593Smuzhiyun return 1;
44*4882a593Smuzhiyun }
45*4882a593Smuzhiyun
belkin_probe(struct hid_device * hdev,const struct hid_device_id * id)46*4882a593Smuzhiyun static int belkin_probe(struct hid_device *hdev, const struct hid_device_id *id)
47*4882a593Smuzhiyun {
48*4882a593Smuzhiyun unsigned long quirks = id->driver_data;
49*4882a593Smuzhiyun int ret;
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun hid_set_drvdata(hdev, (void *)quirks);
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun ret = hid_parse(hdev);
54*4882a593Smuzhiyun if (ret) {
55*4882a593Smuzhiyun hid_err(hdev, "parse failed\n");
56*4882a593Smuzhiyun goto err_free;
57*4882a593Smuzhiyun }
58*4882a593Smuzhiyun
59*4882a593Smuzhiyun ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT |
60*4882a593Smuzhiyun ((quirks & BELKIN_HIDDEV) ? HID_CONNECT_HIDDEV_FORCE : 0));
61*4882a593Smuzhiyun if (ret) {
62*4882a593Smuzhiyun hid_err(hdev, "hw start failed\n");
63*4882a593Smuzhiyun goto err_free;
64*4882a593Smuzhiyun }
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun return 0;
67*4882a593Smuzhiyun err_free:
68*4882a593Smuzhiyun return ret;
69*4882a593Smuzhiyun }
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun static const struct hid_device_id belkin_devices[] = {
72*4882a593Smuzhiyun { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM),
73*4882a593Smuzhiyun .driver_data = BELKIN_HIDDEV },
74*4882a593Smuzhiyun { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD),
75*4882a593Smuzhiyun .driver_data = BELKIN_WKBD },
76*4882a593Smuzhiyun { }
77*4882a593Smuzhiyun };
78*4882a593Smuzhiyun MODULE_DEVICE_TABLE(hid, belkin_devices);
79*4882a593Smuzhiyun
80*4882a593Smuzhiyun static struct hid_driver belkin_driver = {
81*4882a593Smuzhiyun .name = "belkin",
82*4882a593Smuzhiyun .id_table = belkin_devices,
83*4882a593Smuzhiyun .input_mapping = belkin_input_mapping,
84*4882a593Smuzhiyun .probe = belkin_probe,
85*4882a593Smuzhiyun };
86*4882a593Smuzhiyun module_hid_driver(belkin_driver);
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun MODULE_LICENSE("GPL");
89