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