drivers/hid/hid-gyration.c

   1 /*
   2  *  HID driver for some gyration "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) 2007 Paul Walmsley
   8  *  Copyright (c) 2008 Jiri Slaby
   9  *  Copyright (c) 2006-2008 Jiri Kosina
  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 gy_map_key_clear(c)     hid_map_usage_clear(hi, usage, bit, max, \
  27                                         EV_KEY, (c))
  28 static int gyration_input_mapping(struct hid_device *hdev, struct hid_input *hi,
  29                 struct hid_field *field, struct hid_usage *usage,
  30                 unsigned long **bit, int *max)
  31 {
  32         if ((usage->hid & HID_USAGE_PAGE) != HID_UP_LOGIVENDOR)
  33                 return 0;
  34
  35         set_bit(EV_REP, hi->input->evbit);
  36         switch (usage->hid & HID_USAGE) {
  37         /* Reported on Gyration MCE Remote */
  38         case 0x00d: gy_map_key_clear(KEY_HOME);         break;
  39         case 0x024: gy_map_key_clear(KEY_DVD);          break;
  40         case 0x025: gy_map_key_clear(KEY_PVR);          break;
  41         case 0x046: gy_map_key_clear(KEY_MEDIA);        break;
  42         case 0x047: gy_map_key_clear(KEY_MP3);          break;
  43         case 0x048: gy_map_key_clear(KEY_MEDIA);        break;
  44         case 0x049: gy_map_key_clear(KEY_CAMERA);       break;
  45         case 0x04a: gy_map_key_clear(KEY_VIDEO);        break;
  46
  47         default:
  48                 return 0;
  49         }
  50         return 1;
  51 }
  52
  53 static int gyration_event(struct hid_device *hdev, struct hid_field *field,
  54                 struct hid_usage *usage, __s32 value)
  55 {
  56
  57         if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput)
  58                 return 0;
  59
  60         if ((usage->hid & HID_USAGE_PAGE) == HID_UP_GENDESK &&
  61                         (usage->hid & 0xff) == 0x82) {
  62                 struct input_dev *input = field->hidinput->input;
  63                 input_event(input, usage->type, usage->code, 1);
  64                 input_sync(input);
  65                 input_event(input, usage->type, usage->code, 0);
  66                 input_sync(input);
  67                 return 1;
  68         }
  69
  70         return 0;
  71 }
  72
  73 static const struct hid_device_id gyration_devices[] = {
  74         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
  75         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
  76         { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
  77         { }
  78 };
  79 MODULE_DEVICE_TABLE(hid, gyration_devices);
  80
  81 static struct hid_driver gyration_driver = {
  82         .name = "gyration",
  83         .id_table = gyration_devices,
  84         .input_mapping = gyration_input_mapping,
  85         .event = gyration_event,
  86 };
  87
  88 static int __init gyration_init(void)
  89 {
  90         return hid_register_driver(&gyration_driver);
  91 }
  92
  93 static void __exit gyration_exit(void)
  94 {
  95         hid_unregister_driver(&gyration_driver);
  96 }
  97
  98 module_init(gyration_init);
  99 module_exit(gyration_exit);
 100 MODULE_LICENSE("GPL");