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 #define MS_RDESC_3K             0x40
  33
  34 static __u8 *ms_report_fixup(struct hid_device *hdev, __u8 *rdesc,
  35                 unsigned int *rsize)
  36 {
  37         unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
  38
  39         /*
  40          * Microsoft Wireless Desktop Receiver (Model 1028) has
  41          * 'Usage Min/Max' where it ought to have 'Physical Min/Max'
  42          */
  43         if ((quirks & MS_RDESC) && *rsize == 571 && rdesc[557] == 0x19 &&
  44                         rdesc[559] == 0x29) {
  45                 hid_info(hdev, "fixing up Microsoft Wireless Receiver Model 1028 report descriptor\n");
  46                 rdesc[557] = 0x35;
  47                 rdesc[559] = 0x45;
  48         }
  49         /* the same as above (s/usage/physical/) */
  50         if ((quirks & MS_RDESC_3K) && *rsize == 106 && rdesc[94] == 0x19 &&
  51                         rdesc[95] == 0x00 && rdesc[96] == 0x29 &&
  52                         rdesc[97] == 0xff) {
  53                 rdesc[94] = 0x35;
  54                 rdesc[96] = 0x45;
  55         }
  56         return rdesc;
  57 }
  58
  59 #define ms_map_key_clear(c)     hid_map_usage_clear(hi, usage, bit, max, \
  60                                         EV_KEY, (c))
  61 static int ms_ergonomy_kb_quirk(struct hid_input *hi, struct hid_usage *usage,
  62                 unsigned long **bit, int *max)
  63 {
  64         struct input_dev *input = hi->input;
  65
  66         switch (usage->hid & HID_USAGE) {
  67         case 0xfd06: ms_map_key_clear(KEY_CHAT);        break;
  68         case 0xfd07: ms_map_key_clear(KEY_PHONE);       break;
  69         case 0xff05:
  70                 set_bit(EV_REP, input->evbit);
  71                 ms_map_key_clear(KEY_F13);
  72                 set_bit(KEY_F14, input->keybit);
  73                 set_bit(KEY_F15, input->keybit);
  74                 set_bit(KEY_F16, input->keybit);
  75                 set_bit(KEY_F17, input->keybit);
  76                 set_bit(KEY_F18, input->keybit);
  77         default:
  78                 return 0;
  79         }
  80         return 1;
  81 }
  82
  83 static int ms_presenter_8k_quirk(struct hid_input *hi, struct hid_usage *usage,
  84                 unsigned long **bit, int *max)
  85 {
  86         set_bit(EV_REP, hi->input->evbit);
  87         switch (usage->hid & HID_USAGE) {
  88         case 0xfd08: ms_map_key_clear(KEY_FORWARD);     break;
  89         case 0xfd09: ms_map_key_clear(KEY_BACK);        break;
  90         case 0xfd0b: ms_map_key_clear(KEY_PLAYPAUSE);   break;
  91         case 0xfd0e: ms_map_key_clear(KEY_CLOSE);       break;
  92         case 0xfd0f: ms_map_key_clear(KEY_PLAY);        break;
  93         default:
  94                 return 0;
  95         }
  96         return 1;
  97 }
  98
  99 static int ms_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 100                 struct hid_field *field, struct hid_usage *usage,
 101                 unsigned long **bit, int *max)
 102 {
 103         unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
 104
 105         if ((usage->hid & HID_USAGE_PAGE) != HID_UP_MSVENDOR)
 106                 return 0;
 107
 108         if (quirks & MS_ERGONOMY) {
 109                 int ret = ms_ergonomy_kb_quirk(hi, usage, bit, max);
 110                 if (ret)
 111                         return ret;
 112         }
 113
 114         if ((quirks & MS_PRESENTER) &&
 115                         ms_presenter_8k_quirk(hi, usage, bit, max))
 116                 return 1;
 117
 118         return 0;
 119 }
 120
 121 static int ms_input_mapped(struct hid_device *hdev, struct hid_input *hi,
 122                 struct hid_field *field, struct hid_usage *usage,
 123                 unsigned long **bit, int *max)
 124 {
 125         unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
 126
 127         if (quirks & MS_DUPLICATE_USAGES)
 128                 clear_bit(usage->code, *bit);
 129
 130         return 0;
 131 }
 132
 133 static int ms_event(struct hid_device *hdev, struct hid_field *field,
 134                 struct hid_usage *usage, __s32 value)
 135 {
 136         unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
 137
 138         if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput ||
 139                         !usage->type)
 140                 return 0;
 141
 142         /* Handling MS keyboards special buttons */
 143         if (quirks & MS_ERGONOMY && usage->hid == (HID_UP_MSVENDOR | 0xff05)) {
 144                 struct input_dev *input = field->hidinput->input;
 145                 static unsigned int last_key = 0;
 146                 unsigned int key = 0;
 147                 switch (value) {
 148                 case 0x01: key = KEY_F14; break;
 149                 case 0x02: key = KEY_F15; break;
 150                 case 0x04: key = KEY_F16; break;
 151                 case 0x08: key = KEY_F17; break;
 152                 case 0x10: key = KEY_F18; break;
 153                 }
 154                 if (key) {
 155                         input_event(input, usage->type, key, 1);
 156                         last_key = key;
 157                 } else
 158                         input_event(input, usage->type, last_key, 0);
 159
 160                 return 1;
 161         }
 162
 163         return 0;
 164 }
 165
 166 static int ms_probe(struct hid_device *hdev, const struct hid_device_id *id)
 167 {
 168         unsigned long quirks = id->driver_data;
 169         int ret;
 170
 171         hid_set_drvdata(hdev, (void *)quirks);
 172
 173         if (quirks & MS_NOGET)
 174                 hdev->quirks |= HID_QUIRK_NOGET;
 175
 176         ret = hid_parse(hdev);
 177         if (ret) {
 178                 hid_err(hdev, "parse failed\n");
 179                 goto err_free;
 180         }
 181
 182         ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT | ((quirks & MS_HIDINPUT) ?
 183                                 HID_CONNECT_HIDINPUT_FORCE : 0));
 184         if (ret) {
 185                 hid_err(hdev, "hw start failed\n");
 186                 goto err_free;
 187         }
 188
 189         return 0;
 190 err_free:
 191         return ret;
 192 }
 193
 194 static const struct hid_device_id ms_devices[] = {
 195         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV),
 196                 .driver_data = MS_HIDINPUT },
 197         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K),
 198                 .driver_data = MS_ERGONOMY },
 199         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K),
 200                 .driver_data = MS_ERGONOMY | MS_RDESC },
 201         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB),
 202                 .driver_data = MS_PRESENTER },
 203         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K),
 204                 .driver_data = MS_ERGONOMY | MS_RDESC_3K },
 205         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0),
 206                 .driver_data = MS_NOGET },
 207         { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500),
 208                 .driver_data = MS_DUPLICATE_USAGES },
 209
 210         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT),
 211                 .driver_data = MS_PRESENTER },
 212         { }
 213 };
 214 MODULE_DEVICE_TABLE(hid, ms_devices);
 215
 216 static struct hid_driver ms_driver = {
 217         .name = "microsoft",
 218         .id_table = ms_devices,
 219         .report_fixup = ms_report_fixup,
 220         .input_mapping = ms_input_mapping,
 221         .input_mapped = ms_input_mapped,
 222         .event = ms_event,
 223         .probe = ms_probe,
 224 };
 225
 226 static int __init ms_init(void)
 227 {
 228         return hid_register_driver(&ms_driver);
 229 }
 230
 231 static void __exit ms_exit(void)
 232 {
 233         hid_unregister_driver(&ms_driver);
 234 }
 235
 236 module_init(ms_init);
 237 module_exit(ms_exit);
 238 MODULE_LICENSE("GPL");