SAFE public projects git trees. - safe/jmp/linux-2.6/blob - drivers/hid/hid-belkin.c

   1 /*
   2  *  HID driver for some belkin "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/hid.h>
  21 #include <linux/module.h>
  22
  23 #include "hid-ids.h"
  24
  25 #define BELKIN_HIDDEV   0x01
  26 #define BELKIN_WKBD     0x02
  27
  28 #define belkin_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \
  29                                         EV_KEY, (c))
  30 static int belkin_input_mapping(struct hid_device *hdev, struct hid_input *hi,
  31                 struct hid_field *field, struct hid_usage *usage,
  32                 unsigned long **bit, int *max)
  33 {
  34         unsigned long quirks = (unsigned long)hid_get_drvdata(hdev);
  35
  36         if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER ||
  37                         !(quirks & BELKIN_WKBD))
  38                 return 0;
  39
  40         switch (usage->hid & HID_USAGE) {
  41         case 0x03a: belkin_map_key_clear(KEY_SOUND);            break;
  42         case 0x03b: belkin_map_key_clear(KEY_CAMERA);           break;
  43         case 0x03c: belkin_map_key_clear(KEY_DOCUMENTS);        break;
  44         default:
  45                 return 0;
  46         }
  47         return 1;
  48 }
  49
  50 static int belkin_probe(struct hid_device *hdev, const struct hid_device_id *id)
  51 {
  52         unsigned long quirks = id->driver_data;
  53         int ret;
  54
  55         hid_set_drvdata(hdev, (void *)quirks);
  56
  57         if (quirks & BELKIN_HIDDEV)
  58                 hdev->quirks |= HID_QUIRK_HIDDEV;
  59
  60         ret = hid_parse(hdev);
  61         if (ret) {
  62                 dev_err(&hdev->dev, "parse failed\n");
  63                 goto err_free;
  64         }
  65
  66         ret = hid_hw_start(hdev);
  67         if (ret) {
  68                 dev_err(&hdev->dev, "hw start failed\n");
  69                 goto err_free;
  70         }
  71
  72         return 0;
  73 err_free:
  74         return ret;
  75 }
  76
  77 static const struct hid_device_id belkin_devices[] = {
  78         { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM),
  79                 .driver_data = BELKIN_HIDDEV },
  80         { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD),
  81                 .driver_data = BELKIN_WKBD },
  82         { }
  83 };
  84 MODULE_DEVICE_TABLE(hid, belkin_devices);
  85
  86 static struct hid_driver belkin_driver = {
  87         .name = "belkin",
  88         .id_table = belkin_devices,
  89         .input_mapping = belkin_input_mapping,
  90         .probe = belkin_probe,
  91 };
  92
  93 static int belkin_init(void)
  94 {
  95         return hid_register_driver(&belkin_driver);
  96 }
  97
  98 static void belkin_exit(void)
  99 {
 100         hid_unregister_driver(&belkin_driver);
 101 }
 102
 103 module_init(belkin_init);
 104 module_exit(belkin_exit);
 105 MODULE_LICENSE("GPL");
 106
 107 HID_COMPAT_LOAD_DRIVER(belkin);