LXR linux/drivers/hid/hid-sunplus.c

   1/*
   2 *  HID driver for some sunplus "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
  25static __u8 *sp_report_fixup(struct hid_device *hdev, __u8 *rdesc,
  26                unsigned int *rsize)
  27{
  28        if (*rsize >= 107 && rdesc[104] == 0x26 && rdesc[105] == 0x80 &&
  29                        rdesc[106] == 0x03) {
  30                hid_info(hdev, "fixing up Sunplus Wireless Desktop report descriptor\n");
  31                rdesc[105] = rdesc[110] = 0x03;
  32                rdesc[106] = rdesc[111] = 0x21;
  33        }
  34        return rdesc;
  35}
  36
  37#define sp_map_key_clear(c)     hid_map_usage_clear(hi, usage, bit, max, \
  38                EV_KEY, (c))
  39static int sp_input_mapping(struct hid_device *hdev, struct hid_input *hi,
  40                struct hid_field *field, struct hid_usage *usage,
  41                unsigned long **bit, int *max)
  42{
  43        if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
  44                return 0;
  45
  46        switch (usage->hid & HID_USAGE) {
  47        case 0x2003: sp_map_key_clear(KEY_ZOOMIN);              break;
  48        case 0x2103: sp_map_key_clear(KEY_ZOOMOUT);     break;
  49        default:
  50                return 0;
  51        }
  52        return 1;
  53}
  54
  55static const struct hid_device_id sp_devices[] = {
  56        { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
  57        { }
  58};
  59MODULE_DEVICE_TABLE(hid, sp_devices);
  60
  61static struct hid_driver sp_driver = {
  62        .name = "sunplus",
  63        .id_table = sp_devices,
  64        .report_fixup = sp_report_fixup,
  65        .input_mapping = sp_input_mapping,
  66};
  67
  68static int __init sp_init(void)
  69{
  70        return hid_register_driver(&sp_driver);
  71}
  72
  73static void __exit sp_exit(void)
  74{
  75        hid_unregister_driver(&sp_driver);
  76}
  77
  78module_init(sp_init);
  79module_exit(sp_exit);
  80MODULE_LICENSE("GPL");
  81