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