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
  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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