linux/drivers/hid/hid-microsoft.c
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   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#define MS_RDESC_3K             0x40
  33
  34static __u8 *ms_report_fixup(struct hid_device *hdev, __u8 *rdesc,
  35                unsigned int *rsize)
  36{
  37        unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
  38
  39        /*
  40         * Microsoft Wireless Desktop Receiver (Model 1028) has
  41         * 'Usage Min/Max' where it ought to have 'Physical Min/Max'
  42         */
  43        if ((quirks & MS_RDESC) && *rsize == 571 && rdesc[557] == 0x19 &&
  44                        rdesc[559] == 0x29) {
  45                hid_info(hdev, "fixing up Microsoft Wireless Receiver Model 1028 report descriptor\n");
  46                rdesc[557] = 0x35;
  47                rdesc[559] = 0x45;
  48        }
  49        /* the same as above (s/usage/physical/) */
  50        if ((quirks & MS_RDESC_3K) && *rsize == 106 &&
  51                        !memcmp((char []){ 0x19, 0x00, 0x29, 0xff },
  52                                &rdesc[94], 4)) {
  53                rdesc[94] = 0x35;
  54                rdesc[96] = 0x45;
  55        }
  56        return rdesc;
  57}
  58
  59#define ms_map_key_clear(c)     hid_map_usage_clear(hi, usage, bit, max, \
  60                                        EV_KEY, (c))
  61static int ms_ergonomy_kb_quirk(struct hid_input *hi, struct hid_usage *usage,
  62                unsigned long **bit, int *max)
  63{
  64        struct input_dev *input = hi->input;
  65
  66        switch (usage->hid & HID_USAGE) {
  67        case 0xfd06: ms_map_key_clear(KEY_CHAT);        break;
  68        case 0xfd07: ms_map_key_clear(KEY_PHONE);       break;
  69        case 0xff05:
  70                set_bit(EV_REP, input->evbit);
  71                ms_map_key_clear(KEY_F13);
  72                set_bit(KEY_F14, input->keybit);
  73                set_bit(KEY_F15, input->keybit);
  74                set_bit(KEY_F16, input->keybit);
  75                set_bit(KEY_F17, input->keybit);
  76                set_bit(KEY_F18, input->keybit);
  77        default:
  78                return 0;
  79        }
  80        return 1;
  81}
  82
  83static int ms_presenter_8k_quirk(struct hid_input *hi, struct hid_usage *usage,
  84                unsigned long **bit, int *max)
  85{
  86        set_bit(EV_REP, hi->input->evbit);
  87        switch (usage->hid & HID_USAGE) {
  88        case 0xfd08: ms_map_key_clear(KEY_FORWARD);     break;
  89        case 0xfd09: ms_map_key_clear(KEY_BACK);        break;
  90        case 0xfd0b: ms_map_key_clear(KEY_PLAYPAUSE);   break;
  91        case 0xfd0e: ms_map_key_clear(KEY_CLOSE);       break;
  92        case 0xfd0f: ms_map_key_clear(KEY_PLAY);        break;
  93        default:
  94                return 0;
  95        }
  96        return 1;
  97}
  98
  99static int ms_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 100                struct hid_field *field, struct hid_usage *usage,
 101                unsigned long **bit, int *max)
 102{
 103        unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
 104
 105        if ((usage->hid & HID_USAGE_PAGE) != HID_UP_MSVENDOR)
 106                return 0;
 107
 108        if (quirks & MS_ERGONOMY) {
 109                int ret = ms_ergonomy_kb_quirk(hi, usage, bit, max);
 110                if (ret)
 111                        return ret;
 112        }
 113
 114        if ((quirks & MS_PRESENTER) &&
 115                        ms_presenter_8k_quirk(hi, usage, bit, max))
 116                return 1;
 117
 118        return 0;
 119}
 120
 121static int ms_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 122                struct hid_field *field, struct hid_usage *usage,
 123                unsigned long **bit, int *max)
 124{
 125        unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
 126
 127        if (quirks & MS_DUPLICATE_USAGES)
 128                clear_bit(usage->code, *bit);
 129
 130        return 0;
 131}
 132
 133static int ms_event(struct hid_device *hdev, struct hid_field *field,
 134                struct hid_usage *usage, __s32 value)
 135{
 136        unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
 137
 138        if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput ||
 139                        !usage->type)
 140                return 0;
 141
 142        /* Handling MS keyboards special buttons */
 143        if (quirks & MS_ERGONOMY && usage->hid == (HID_UP_MSVENDOR | 0xff05)) {
 144                struct input_dev *input = field->hidinput->input;
 145                static unsigned int last_key = 0;
 146                unsigned int key = 0;
 147                switch (value) {
 148                case 0x01: key = KEY_F14; break;
 149                case 0x02: key = KEY_F15; break;
 150                case 0x04: key = KEY_F16; break;
 151                case 0x08: key = KEY_F17; break;
 152                case 0x10: key = KEY_F18; break;
 153                }
 154                if (key) {
 155                        input_event(input, usage->type, key, 1);
 156                        last_key = key;
 157                } else
 158                        input_event(input, usage->type, last_key, 0);
 159
 160                return 1;
 161        }
 162
 163        return 0;
 164}
 165
 166static int ms_probe(struct hid_device *hdev, const struct hid_device_id *id)
 167{
 168        unsigned long quirks = id->driver_data;
 169        int ret;
 170
 171        hid_set_drvdata(hdev, (void *)quirks);
 172
 173        if (quirks & MS_NOGET)
 174                hdev->quirks |= HID_QUIRK_NOGET;
 175
 176        ret = hid_parse(hdev);
 177        if (ret) {
 178                hid_err(hdev, "parse failed\n");
 179                goto err_free;
 180        }
 181
 182        ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT | ((quirks & MS_HIDINPUT) ?
 183                                HID_CONNECT_HIDINPUT_FORCE : 0));
 184        if (ret) {
 185                hid_err(hdev, "hw start failed\n");
 186                goto err_free;
 187        }
 188
 189        return 0;
 190err_free:
 191        return ret;
 192}
 193
 194static const struct hid_device_id ms_devices[] = {
 195        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV),
 196                .driver_data = MS_HIDINPUT },
 197        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K),
 198                .driver_data = MS_ERGONOMY },
 199        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K),
 200                .driver_data = MS_ERGONOMY | MS_RDESC },
 201        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB),
 202                .driver_data = MS_PRESENTER },
 203        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K),
 204                .driver_data = MS_ERGONOMY | MS_RDESC_3K },
 205        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0),
 206                .driver_data = MS_NOGET },
 207        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500),
 208                .driver_data = MS_DUPLICATE_USAGES },
 209
 210        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT),
 211                .driver_data = MS_PRESENTER },
 212        { }
 213};
 214MODULE_DEVICE_TABLE(hid, ms_devices);
 215
 216static struct hid_driver ms_driver = {
 217        .name = "microsoft",
 218        .id_table = ms_devices,
 219        .report_fixup = ms_report_fixup,
 220        .input_mapping = ms_input_mapping,
 221        .input_mapped = ms_input_mapped,
 222        .event = ms_event,
 223        .probe = ms_probe,
 224};
 225
 226static int __init ms_init(void)
 227{
 228        return hid_register_driver(&ms_driver);
 229}
 230
 231static void __exit ms_exit(void)
 232{
 233        hid_unregister_driver(&ms_driver);
 234}
 235
 236module_init(ms_init);
 237module_exit(ms_exit);
 238MODULE_LICENSE("GPL");
 239
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