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