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) 2008 Jiri Slaby
   9 */
  10
  11/*
  12 * This program is free software; you can redistribute it and/or modify it
  13 * under the terms of the GNU General Public License as published by the Free
  14 * Software Foundation; either version 2 of the License, or (at your option)
  15 * any later version.
  16 */
  17
  18#include <linux/device.h>
  19#include <linux/input.h>
  20#include <linux/hid.h>
  21#include <linux/module.h>
  22
  23#include "hid-ids.h"
  24
  25#define MS_HIDINPUT             0x01
  26#define MS_ERGONOMY             0x02
  27#define MS_PRESENTER            0x04
  28#define MS_RDESC                0x08
  29#define MS_NOGET                0x10
  30#define MS_DUPLICATE_USAGES     0x20
  31#define MS_RDESC_3K             0x40
  32
  33static __u8 *ms_report_fixup(struct hid_device *hdev, __u8 *rdesc,
  34                unsigned int *rsize)
  35{
  36        unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
  37
  38        /*
  39         * Microsoft Wireless Desktop Receiver (Model 1028) has
  40         * 'Usage Min/Max' where it ought to have 'Physical Min/Max'
  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        /* the same as above (s/usage/physical/) */
  49        if ((quirks & MS_RDESC_3K) && *rsize == 106 && rdesc[94] == 0x19 &&
  50                        rdesc[95] == 0x00 && rdesc[96] == 0x29 &&
  51                        rdesc[97] == 0xff) {
  52                rdesc[94] = 0x35;
  53                rdesc[96] = 0x45;
  54        }
  55        return rdesc;
  56}
  57
  58#define ms_map_key_clear(c)     hid_map_usage_clear(hi, usage, bit, max, \
  59                                        EV_KEY, (c))
  60static int ms_ergonomy_kb_quirk(struct hid_input *hi, struct hid_usage *usage,
  61                unsigned long **bit, int *max)
  62{
  63        struct input_dev *input = hi->input;
  64
  65        switch (usage->hid & HID_USAGE) {
  66        case 0xfd06: ms_map_key_clear(KEY_CHAT);        break;
  67        case 0xfd07: ms_map_key_clear(KEY_PHONE);       break;
  68        case 0xff05:
  69                set_bit(EV_REP, input->evbit);
  70                ms_map_key_clear(KEY_F13);
  71                set_bit(KEY_F14, input->keybit);
  72                set_bit(KEY_F15, input->keybit);
  73                set_bit(KEY_F16, input->keybit);
  74                set_bit(KEY_F17, input->keybit);
  75                set_bit(KEY_F18, input->keybit);
  76        default:
  77                return 0;
  78        }
  79        return 1;
  80}
  81
  82static int ms_presenter_8k_quirk(struct hid_input *hi, struct hid_usage *usage,
  83                unsigned long **bit, int *max)
  84{
  85        set_bit(EV_REP, hi->input->evbit);
  86        switch (usage->hid & HID_USAGE) {
  87        case 0xfd08: ms_map_key_clear(KEY_FORWARD);     break;
  88        case 0xfd09: ms_map_key_clear(KEY_BACK);        break;
  89        case 0xfd0b: ms_map_key_clear(KEY_PLAYPAUSE);   break;
  90        case 0xfd0e: ms_map_key_clear(KEY_CLOSE);       break;
  91        case 0xfd0f: ms_map_key_clear(KEY_PLAY);        break;
  92        default:
  93                return 0;
  94        }
  95        return 1;
  96}
  97
  98static int ms_input_mapping(struct hid_device *hdev, struct hid_input *hi,
  99                struct hid_field *field, struct hid_usage *usage,
 100                unsigned long **bit, int *max)
 101{
 102        unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
 103
 104        if ((usage->hid & HID_USAGE_PAGE) != HID_UP_MSVENDOR)
 105                return 0;
 106
 107        if (quirks & MS_ERGONOMY) {
 108                int ret = ms_ergonomy_kb_quirk(hi, usage, bit, max);
 109                if (ret)
 110                        return ret;
 111        }
 112
 113        if ((quirks & MS_PRESENTER) &&
 114                        ms_presenter_8k_quirk(hi, usage, bit, max))
 115                return 1;
 116
 117        return 0;
 118}
 119
 120static int ms_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 121                struct hid_field *field, struct hid_usage *usage,
 122                unsigned long **bit, int *max)
 123{
 124        unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
 125
 126        if (quirks & MS_DUPLICATE_USAGES)
 127                clear_bit(usage->code, *bit);
 128
 129        return 0;
 130}
 131
 132static int ms_event(struct hid_device *hdev, struct hid_field *field,
 133                struct hid_usage *usage, __s32 value)
 134{
 135        unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
 136
 137        if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput ||
 138                        !usage->type)
 139                return 0;
 140
 141        /* Handling MS keyboards special buttons */
 142        if (quirks & MS_ERGONOMY && usage->hid == (HID_UP_MSVENDOR | 0xff05)) {
 143                struct input_dev *input = field->hidinput->input;
 144                static unsigned int last_key = 0;
 145                unsigned int key = 0;
 146                switch (value) {
 147                case 0x01: key = KEY_F14; break;
 148                case 0x02: key = KEY_F15; break;
 149                case 0x04: key = KEY_F16; break;
 150                case 0x08: key = KEY_F17; break;
 151                case 0x10: key = KEY_F18; break;
 152                }
 153                if (key) {
 154                        input_event(input, usage->type, key, 1);
 155                        last_key = key;
 156                } else
 157                        input_event(input, usage->type, last_key, 0);
 158
 159                return 1;
 160        }
 161
 162        return 0;
 163}
 164
 165static int ms_probe(struct hid_device *hdev, const struct hid_device_id *id)
 166{
 167        unsigned long quirks = id->driver_data;
 168        int ret;
 169
 170        hid_set_drvdata(hdev, (void *)quirks);
 171
 172        if (quirks & MS_NOGET)
 173                hdev->quirks |= HID_QUIRK_NOGET;
 174
 175        ret = hid_parse(hdev);
 176        if (ret) {
 177                hid_err(hdev, "parse failed\n");
 178                goto err_free;
 179        }
 180
 181        ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT | ((quirks & MS_HIDINPUT) ?
 182                                HID_CONNECT_HIDINPUT_FORCE : 0));
 183        if (ret) {
 184                hid_err(hdev, "hw start failed\n");
 185                goto err_free;
 186        }
 187
 188        return 0;
 189err_free:
 190        return ret;
 191}
 192
 193static const struct hid_device_id ms_devices[] = {
 194        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV),
 195                .driver_data = MS_HIDINPUT },
 196        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K),
 197                .driver_data = MS_ERGONOMY },
 198        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K_JP),
 199                .driver_data = MS_ERGONOMY },
 200        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K),
 201                .driver_data = MS_ERGONOMY | MS_RDESC },
 202        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB),
 203                .driver_data = MS_PRESENTER },
 204        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K),
 205                .driver_data = MS_ERGONOMY | MS_RDESC_3K },
 206        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0),
 207                .driver_data = MS_NOGET },
 208        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500),
 209                .driver_data = MS_DUPLICATE_USAGES },
 210
 211        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT),
 212                .driver_data = MS_PRESENTER },
 213        { }
 214};
 215MODULE_DEVICE_TABLE(hid, ms_devices);
 216
 217static struct hid_driver ms_driver = {
 218        .name = "microsoft",
 219        .id_table = ms_devices,
 220        .report_fixup = ms_report_fixup,
 221        .input_mapping = ms_input_mapping,
 222        .input_mapped = ms_input_mapped,
 223        .event = ms_event,
 224        .probe = ms_probe,
 225};
 226module_hid_driver(ms_driver);
 227
 228MODULE_LICENSE("GPL");
 229
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