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
  32/*
  33 * Microsoft Wireless Desktop Receiver (Model 1028) has several
  34 * 'Usage Min/Max' where it ought to have 'Physical Min/Max'
  35 */
  36static void ms_report_fixup(struct hid_device *hdev, __u8 *rdesc,
  37                unsigned int rsize)
  38{
  39        unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
  40
  41        if ((quirks & MS_RDESC) && rsize == 571 && rdesc[284] == 0x19 &&
  42                        rdesc[286] == 0x2a && rdesc[304] == 0x19 &&
  43                        rdesc[306] == 0x29 && rdesc[352] == 0x1a &&
  44                        rdesc[355] == 0x2a && rdesc[557] == 0x19 &&
  45                        rdesc[559] == 0x29) {
  46                dev_info(&hdev->dev, "fixing up Microsoft Wireless Receiver "
  47                                "Model 1028 report descriptor\n");
  48                rdesc[284] = rdesc[304] = rdesc[557] = 0x35;
  49                rdesc[352] = 0x36;
  50                rdesc[286] = rdesc[355] = 0x46;
  51                rdesc[306] = rdesc[559] = 0x45;
  52        }
  53}
  54
  55#define ms_map_key_clear(c)     hid_map_usage_clear(hi, usage, bit, max, \
  56                                        EV_KEY, (c))
  57static int ms_ergonomy_kb_quirk(struct hid_input *hi, struct hid_usage *usage,
  58                unsigned long **bit, int *max)
  59{
  60        struct input_dev *input = hi->input;
  61
  62        switch (usage->hid & HID_USAGE) {
  63        case 0xfd06: ms_map_key_clear(KEY_CHAT);        break;
  64        case 0xfd07: ms_map_key_clear(KEY_PHONE);       break;
  65        case 0xff05:
  66                set_bit(EV_REP, input->evbit);
  67                ms_map_key_clear(KEY_F13);
  68                set_bit(KEY_F14, input->keybit);
  69                set_bit(KEY_F15, input->keybit);
  70                set_bit(KEY_F16, input->keybit);
  71                set_bit(KEY_F17, input->keybit);
  72                set_bit(KEY_F18, input->keybit);
  73        default:
  74                return 0;
  75        }
  76        return 1;
  77}
  78
  79static int ms_presenter_8k_quirk(struct hid_input *hi, struct hid_usage *usage,
  80                unsigned long **bit, int *max)
  81{
  82        set_bit(EV_REP, hi->input->evbit);
  83        switch (usage->hid & HID_USAGE) {
  84        case 0xfd08: ms_map_key_clear(KEY_FORWARD);     break;
  85        case 0xfd09: ms_map_key_clear(KEY_BACK);        break;
  86        case 0xfd0b: ms_map_key_clear(KEY_PLAYPAUSE);   break;
  87        case 0xfd0e: ms_map_key_clear(KEY_CLOSE);       break;
  88        case 0xfd0f: ms_map_key_clear(KEY_PLAY);        break;
  89        default:
  90                return 0;
  91        }
  92        return 1;
  93}
  94
  95static int ms_input_mapping(struct hid_device *hdev, struct hid_input *hi,
  96                struct hid_field *field, struct hid_usage *usage,
  97                unsigned long **bit, int *max)
  98{
  99        unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
 100
 101        if ((usage->hid & HID_USAGE_PAGE) != HID_UP_MSVENDOR)
 102                return 0;
 103
 104        if (quirks & MS_ERGONOMY) {
 105                int ret = ms_ergonomy_kb_quirk(hi, usage, bit, max);
 106                if (ret)
 107                        return ret;
 108        }
 109
 110        if ((quirks & MS_PRESENTER) &&
 111                        ms_presenter_8k_quirk(hi, usage, bit, max))
 112                return 1;
 113
 114        return 0;
 115}
 116
 117static int ms_event(struct hid_device *hdev, struct hid_field *field,
 118                struct hid_usage *usage, __s32 value)
 119{
 120        unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
 121
 122        if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput ||
 123                        !usage->type)
 124                return 0;
 125
 126        /* Handling MS keyboards special buttons */
 127        if (quirks & MS_ERGONOMY && usage->hid == (HID_UP_MSVENDOR | 0xff05)) {
 128                struct input_dev *input = field->hidinput->input;
 129                static unsigned int last_key = 0;
 130                unsigned int key = 0;
 131                switch (value) {
 132                case 0x01: key = KEY_F14; break;
 133                case 0x02: key = KEY_F15; break;
 134                case 0x04: key = KEY_F16; break;
 135                case 0x08: key = KEY_F17; break;
 136                case 0x10: key = KEY_F18; break;
 137                }
 138                if (key) {
 139                        input_event(input, usage->type, key, 1);
 140                        last_key = key;
 141                } else
 142                        input_event(input, usage->type, last_key, 0);
 143
 144                return 1;
 145        }
 146
 147        return 0;
 148}
 149
 150static int ms_probe(struct hid_device *hdev, const struct hid_device_id *id)
 151{
 152        unsigned long quirks = id->driver_data;
 153        int ret;
 154
 155        hid_set_drvdata(hdev, (void *)quirks);
 156
 157        if (quirks & MS_NOGET)
 158                hdev->quirks |= HID_QUIRK_NOGET;
 159
 160        ret = hid_parse(hdev);
 161        if (ret) {
 162                dev_err(&hdev->dev, "parse failed\n");
 163                goto err_free;
 164        }
 165
 166        ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT | ((quirks & MS_HIDINPUT) ?
 167                                HID_CONNECT_HIDINPUT_FORCE : 0));
 168        if (ret) {
 169                dev_err(&hdev->dev, "hw start failed\n");
 170                goto err_free;
 171        }
 172
 173        return 0;
 174err_free:
 175        return ret;
 176}
 177
 178static const struct hid_device_id ms_devices[] = {
 179        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV),
 180                .driver_data = MS_HIDINPUT },
 181        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K),
 182                .driver_data = MS_ERGONOMY },
 183        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K),
 184                .driver_data = MS_ERGONOMY | MS_RDESC },
 185        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB),
 186                .driver_data = MS_PRESENTER },
 187        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0),
 188                .driver_data = MS_NOGET },
 189
 190        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT),
 191                .driver_data = MS_PRESENTER },
 192        { }
 193};
 194MODULE_DEVICE_TABLE(hid, ms_devices);
 195
 196static struct hid_driver ms_driver = {
 197        .name = "microsoft",
 198        .id_table = ms_devices,
 199        .report_fixup = ms_report_fixup,
 200        .input_mapping = ms_input_mapping,
 201        .event = ms_event,
 202        .probe = ms_probe,
 203};
 204
 205static int ms_init(void)
 206{
 207        return hid_register_driver(&ms_driver);
 208}
 209
 210static void ms_exit(void)
 211{
 212        hid_unregister_driver(&ms_driver);
 213}
 214
 215module_init(ms_init);
 216module_exit(ms_exit);
 217MODULE_LICENSE("GPL");
 218
 219HID_COMPAT_LOAD_DRIVER(microsoft);
 220