drivers/hid/hid-input-quirks.c

   1 /*
   2  *  HID-input usage mapping quirks
   3  *
   4  *  This is used to handle HID-input mappings for devices violating
   5  *  HUT 1.12 specification.
   6  *
   7  * Copyright (c) 2007-2008 Jiri Kosina
   8  */
   9
  10 /*
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU General Public License as published by the Free
  13  * Software Foundation; either version 2 of the License
  14  */
  15
  16 #include <linux/input.h>
  17 #include <linux/hid.h>
  18
  19 #define map_key_clear(c)        hid_map_usage_clear(hidinput, usage, bit, \
  20                 max, EV_KEY, (c))
  21
  22 static int quirk_gyration_remote(struct hid_usage *usage,
  23                 struct hid_input *hidinput, unsigned long **bit, int *max)
  24 {
  25         if ((usage->hid & HID_USAGE_PAGE) != HID_UP_LOGIVENDOR)
  26                 return 0;
  27
  28         set_bit(EV_REP, hidinput->input->evbit);
  29         switch(usage->hid & HID_USAGE) {
  30                 /* Reported on Gyration MCE Remote */
  31                 case 0x00d: map_key_clear(KEY_HOME);            break;
  32                 case 0x024: map_key_clear(KEY_DVD);             break;
  33                 case 0x025: map_key_clear(KEY_PVR);             break;
  34                 case 0x046: map_key_clear(KEY_MEDIA);           break;
  35                 case 0x047: map_key_clear(KEY_MP3);             break;
  36                 case 0x049: map_key_clear(KEY_CAMERA);          break;
  37                 case 0x04a: map_key_clear(KEY_VIDEO);           break;
  38
  39                 default:
  40                         return 0;
  41         }
  42         return 1;
  43 }
  44
  45 #define VENDOR_ID_GYRATION                      0x0c16
  46 #define DEVICE_ID_GYRATION_REMOTE               0x0002
  47
  48 static const struct hid_input_blacklist {
  49         __u16 idVendor;
  50         __u16 idProduct;
  51         int (*quirk)(struct hid_usage *, struct hid_input *, unsigned long **,
  52                         int *);
  53 } hid_input_blacklist[] = {
  54         { VENDOR_ID_GYRATION, DEVICE_ID_GYRATION_REMOTE, quirk_gyration_remote },
  55
  56         { 0, 0, NULL }
  57 };
  58
  59 int hidinput_mapping_quirks(struct hid_usage *usage,
  60                 struct hid_input *hi, unsigned long **bit, int *max)
  61 {
  62         struct hid_device *device = input_get_drvdata(hi->input);
  63         int i = 0;
  64
  65         while (hid_input_blacklist[i].quirk) {
  66                 if (hid_input_blacklist[i].idVendor == device->vendor &&
  67                                 hid_input_blacklist[i].idProduct == device->product)
  68                         return hid_input_blacklist[i].quirk(usage, hi, bit,
  69                                         max);
  70                 i++;
  71         }
  72         return 0;
  73 }
  74
  75 int hidinput_event_quirks(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
  76 {
  77         struct input_dev *input;
  78
  79         input = field->hidinput->input;
  80
  81         /* Gyration MCE remote "Sleep" key */
  82         if (hid->vendor == VENDOR_ID_GYRATION &&
  83             hid->product == DEVICE_ID_GYRATION_REMOTE &&
  84             (usage->hid & HID_USAGE_PAGE) == HID_UP_GENDESK &&
  85             (usage->hid & 0xff) == 0x82) {
  86                 input_event(input, usage->type, usage->code, 1);
  87                 input_sync(input);
  88                 input_event(input, usage->type, usage->code, 0);
  89                 input_sync(input);
  90                 return 1;
  91         }
  92         return 0;
  93 }
  94
  95