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) 2008 Jiri Slaby
   9 */
  10
  11/*
  12 * This program is free software; you can redistribute it and/or modify it
  13 * under the terms of the GNU General Public License as published by the Free
  14 * Software Foundation; either version 2 of the License, or (at your option)
  15 * any later version.
  16 */
  17
  18#include <linux/device.h>
  19#include <linux/hid.h>
  20#include <linux/module.h>
  21
  22#include "hid-ids.h"
  23
  24static __u8 *sp_report_fixup(struct hid_device *hdev, __u8 *rdesc,
  25                unsigned int *rsize)
  26{
  27        if (*rsize >= 112 && rdesc[104] == 0x26 && rdesc[105] == 0x80 &&
  28                        rdesc[106] == 0x03) {
  29                hid_info(hdev, "fixing up Sunplus Wireless Desktop report descriptor\n");
  30                rdesc[105] = rdesc[110] = 0x03;
  31                rdesc[106] = rdesc[111] = 0x21;
  32        }
  33        return rdesc;
  34}
  35
  36#define sp_map_key_clear(c)     hid_map_usage_clear(hi, usage, bit, max, \
  37                EV_KEY, (c))
  38static int sp_input_mapping(struct hid_device *hdev, struct hid_input *hi,
  39                struct hid_field *field, struct hid_usage *usage,
  40                unsigned long **bit, int *max)
  41{
  42        if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)
  43                return 0;
  44
  45        switch (usage->hid & HID_USAGE) {
  46        case 0x2003: sp_map_key_clear(KEY_ZOOMIN);              break;
  47        case 0x2103: sp_map_key_clear(KEY_ZOOMOUT);     break;
  48        default:
  49                return 0;
  50        }
  51        return 1;
  52}
  53
  54static const struct hid_device_id sp_devices[] = {
  55        { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
  56        { }
  57};
  58MODULE_DEVICE_TABLE(hid, sp_devices);
  59
  60static struct hid_driver sp_driver = {
  61        .name = "sunplus",
  62        .id_table = sp_devices,
  63        .report_fixup = sp_report_fixup,
  64        .input_mapping = sp_input_mapping,
  65};
  66module_hid_driver(sp_driver);
  67
  68MODULE_LICENSE("GPL");
  69