Root/drivers/hid/hid-microsoft.c

1/*
2 * HID driver for some microsoft "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/input.h>
21#include <linux/hid.h>
22#include <linux/module.h>
23
24#include "hid-ids.h"
25
26#define MS_HIDINPUT 0x01
27#define MS_ERGONOMY 0x02
28#define MS_PRESENTER 0x04
29#define MS_RDESC 0x08
30#define MS_NOGET 0x10
31#define MS_DUPLICATE_USAGES 0x20
32
33/*
34 * Microsoft Wireless Desktop Receiver (Model 1028) has
35 * 'Usage Min/Max' where it ought to have 'Physical Min/Max'
36 */
37static __u8 *ms_report_fixup(struct hid_device *hdev, __u8 *rdesc,
38        unsigned int *rsize)
39{
40    unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
41
42    if ((quirks & MS_RDESC) && *rsize == 571 && rdesc[557] == 0x19 &&
43            rdesc[559] == 0x29) {
44        hid_info(hdev, "fixing up Microsoft Wireless Receiver Model 1028 report descriptor\n");
45        rdesc[557] = 0x35;
46        rdesc[559] = 0x45;
47    }
48    return rdesc;
49}
50
51#define ms_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
52                    EV_KEY, (c))
53static int ms_ergonomy_kb_quirk(struct hid_input *hi, struct hid_usage *usage,
54        unsigned long **bit, int *max)
55{
56    struct input_dev *input = hi->input;
57
58    switch (usage->hid & HID_USAGE) {
59    case 0xfd06: ms_map_key_clear(KEY_CHAT); break;
60    case 0xfd07: ms_map_key_clear(KEY_PHONE); break;
61    case 0xff05:
62        set_bit(EV_REP, input->evbit);
63        ms_map_key_clear(KEY_F13);
64        set_bit(KEY_F14, input->keybit);
65        set_bit(KEY_F15, input->keybit);
66        set_bit(KEY_F16, input->keybit);
67        set_bit(KEY_F17, input->keybit);
68        set_bit(KEY_F18, input->keybit);
69    default:
70        return 0;
71    }
72    return 1;
73}
74
75static int ms_presenter_8k_quirk(struct hid_input *hi, struct hid_usage *usage,
76        unsigned long **bit, int *max)
77{
78    set_bit(EV_REP, hi->input->evbit);
79    switch (usage->hid & HID_USAGE) {
80    case 0xfd08: ms_map_key_clear(KEY_FORWARD); break;
81    case 0xfd09: ms_map_key_clear(KEY_BACK); break;
82    case 0xfd0b: ms_map_key_clear(KEY_PLAYPAUSE); break;
83    case 0xfd0e: ms_map_key_clear(KEY_CLOSE); break;
84    case 0xfd0f: ms_map_key_clear(KEY_PLAY); break;
85    default:
86        return 0;
87    }
88    return 1;
89}
90
91static int ms_input_mapping(struct hid_device *hdev, struct hid_input *hi,
92        struct hid_field *field, struct hid_usage *usage,
93        unsigned long **bit, int *max)
94{
95    unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
96
97    if ((usage->hid & HID_USAGE_PAGE) != HID_UP_MSVENDOR)
98        return 0;
99
100    if (quirks & MS_ERGONOMY) {
101        int ret = ms_ergonomy_kb_quirk(hi, usage, bit, max);
102        if (ret)
103            return ret;
104    }
105
106    if ((quirks & MS_PRESENTER) &&
107            ms_presenter_8k_quirk(hi, usage, bit, max))
108        return 1;
109
110    return 0;
111}
112
113static int ms_input_mapped(struct hid_device *hdev, struct hid_input *hi,
114        struct hid_field *field, struct hid_usage *usage,
115        unsigned long **bit, int *max)
116{
117    unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
118
119    if (quirks & MS_DUPLICATE_USAGES)
120        clear_bit(usage->code, *bit);
121
122    return 0;
123}
124
125static int ms_event(struct hid_device *hdev, struct hid_field *field,
126        struct hid_usage *usage, __s32 value)
127{
128    unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
129
130    if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput ||
131            !usage->type)
132        return 0;
133
134    /* Handling MS keyboards special buttons */
135    if (quirks & MS_ERGONOMY && usage->hid == (HID_UP_MSVENDOR | 0xff05)) {
136        struct input_dev *input = field->hidinput->input;
137        static unsigned int last_key = 0;
138        unsigned int key = 0;
139        switch (value) {
140        case 0x01: key = KEY_F14; break;
141        case 0x02: key = KEY_F15; break;
142        case 0x04: key = KEY_F16; break;
143        case 0x08: key = KEY_F17; break;
144        case 0x10: key = KEY_F18; break;
145        }
146        if (key) {
147            input_event(input, usage->type, key, 1);
148            last_key = key;
149        } else
150            input_event(input, usage->type, last_key, 0);
151
152        return 1;
153    }
154
155    return 0;
156}
157
158static int ms_probe(struct hid_device *hdev, const struct hid_device_id *id)
159{
160    unsigned long quirks = id->driver_data;
161    int ret;
162
163    hid_set_drvdata(hdev, (void *)quirks);
164
165    if (quirks & MS_NOGET)
166        hdev->quirks |= HID_QUIRK_NOGET;
167
168    ret = hid_parse(hdev);
169    if (ret) {
170        hid_err(hdev, "parse failed\n");
171        goto err_free;
172    }
173
174    ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT | ((quirks & MS_HIDINPUT) ?
175                HID_CONNECT_HIDINPUT_FORCE : 0));
176    if (ret) {
177        hid_err(hdev, "hw start failed\n");
178        goto err_free;
179    }
180
181    return 0;
182err_free:
183    return ret;
184}
185
186static const struct hid_device_id ms_devices[] = {
187    { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV),
188        .driver_data = MS_HIDINPUT },
189    { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K),
190        .driver_data = MS_ERGONOMY },
191    { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K),
192        .driver_data = MS_ERGONOMY | MS_RDESC },
193    { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB),
194        .driver_data = MS_PRESENTER },
195    { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K),
196        .driver_data = MS_ERGONOMY },
197    { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0),
198        .driver_data = MS_NOGET },
199    { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500),
200        .driver_data = MS_DUPLICATE_USAGES },
201
202    { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT),
203        .driver_data = MS_PRESENTER },
204    { }
205};
206MODULE_DEVICE_TABLE(hid, ms_devices);
207
208static struct hid_driver ms_driver = {
209    .name = "microsoft",
210    .id_table = ms_devices,
211    .report_fixup = ms_report_fixup,
212    .input_mapping = ms_input_mapping,
213    .input_mapped = ms_input_mapped,
214    .event = ms_event,
215    .probe = ms_probe,
216};
217
218static int __init ms_init(void)
219{
220    return hid_register_driver(&ms_driver);
221}
222
223static void __exit ms_exit(void)
224{
225    hid_unregister_driver(&ms_driver);
226}
227
228module_init(ms_init);
229module_exit(ms_exit);
230MODULE_LICENSE("GPL");
231

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