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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 
 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 module_hid_driver(sp_driver);
 67 
 68 MODULE_LICENSE("GPL");
 69 

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