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 #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  */
  37 static __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))
  53 static 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
  75 static 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
  91 static 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
 113 static 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
 125 static 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
 158 static 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;
 182 err_free:
 183         return ret;
 184 }
 185
 186 static 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 };
 206 MODULE_DEVICE_TABLE(hid, ms_devices);
 207
 208 static 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
 218 static int __init ms_init(void)
 219 {
 220         return hid_register_driver(&ms_driver);
 221 }
 222
 223 static void __exit ms_exit(void)
 224 {
 225         hid_unregister_driver(&ms_driver);
 226 }
 227
 228 module_init(ms_init);
 229 module_exit(ms_exit);
 230 MODULE_LICENSE("GPL");