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
  24 static __u8 *sp_report_fixup(struct hid_device *hdev, __u8 *rdesc,
  25                 unsigned int *rsize)
  26 {
  27         if (*rsize >= 107 && 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))
  38 static 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
  54 static const struct hid_device_id sp_devices[] = {
  55         { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
  56         { }
  57 };
  58 MODULE_DEVICE_TABLE(hid, sp_devices);
  59
  60 static 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 };
  66
  67 static int __init sp_init(void)
  68 {
  69         return hid_register_driver(&sp_driver);
  70 }
  71
  72 static void __exit sp_exit(void)
  73 {
  74         hid_unregister_driver(&sp_driver);
  75 }
  76
  77 module_init(sp_init);
  78 module_exit(sp_exit);
  79 MODULE_LICENSE("GPL");