/*
   *  HID driver for some chicony "special" devices
   *
   *  Copyright (c) 1999 Andreas Gal
   *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
   *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
   *  Copyright (c) 2006-2007 Jiri Kosina
   *  Copyright (c) 2007 Paul Walmsley
   *  Copyright (c) 2008 Jiri Slaby
   */
  
  /*
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License as published by the Free
   * Software Foundation; either version 2 of the License, or (at your option)
   * any later version.
   */
  
  #include <linux/device.h>
  #include <linux/input.h>
  #include <linux/hid.h>
  #include <linux/module.h>

  #include <linux/usb.h>

  
  #include "hid-ids.h"
  
  #define ch_map_key_clear(c)	hid_map_usage_clear(hi, usage, bit, max, \
  					EV_KEY, (c))
  static int ch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
  		struct hid_field *field, struct hid_usage *usage,
  		unsigned long **bit, int *max)
  {
  	if ((usage->hid & HID_USAGE_PAGE) != HID_UP_MSVENDOR)
  		return 0;
  
  	set_bit(EV_REP, hi->input->evbit);
  	switch (usage->hid & HID_USAGE) {
  	case 0xff01: ch_map_key_clear(BTN_1);	break;
  	case 0xff02: ch_map_key_clear(BTN_2);	break;
  	case 0xff03: ch_map_key_clear(BTN_3);	break;
  	case 0xff04: ch_map_key_clear(BTN_4);	break;
  	case 0xff05: ch_map_key_clear(BTN_5);	break;
  	case 0xff06: ch_map_key_clear(BTN_6);	break;
  	case 0xff07: ch_map_key_clear(BTN_7);	break;
  	case 0xff08: ch_map_key_clear(BTN_8);	break;
  	case 0xff09: ch_map_key_clear(BTN_9);	break;
  	case 0xff0a: ch_map_key_clear(BTN_A);	break;
  	case 0xff0b: ch_map_key_clear(BTN_B);	break;

  	case 0x00f1: ch_map_key_clear(KEY_WLAN);	break;
  	case 0x00f2: ch_map_key_clear(KEY_BRIGHTNESSDOWN);	break;
  	case 0x00f3: ch_map_key_clear(KEY_BRIGHTNESSUP);	break;
  	case 0x00f4: ch_map_key_clear(KEY_DISPLAY_OFF);	break;

  	case 0x00f7: ch_map_key_clear(KEY_CAMERA);	break;
  	case 0x00f8: ch_map_key_clear(KEY_PROG1);	break;

  	default:
  		return 0;
  	}
  	return 1;
  }

  static __u8 *ch_switch12_report_fixup(struct hid_device *hdev, __u8 *rdesc,
  		unsigned int *rsize)
  {
  	struct usb_interface *intf = to_usb_interface(hdev->dev.parent);
  	
  	if (intf->cur_altsetting->desc.bInterfaceNumber == 1) {
  		/* Change usage maximum and logical maximum from 0x7fff to
  		 * 0x2fff, so they don't exceed HID_MAX_USAGES */
  		switch (hdev->product) {
  		case USB_DEVICE_ID_CHICONY_ACER_SWITCH12:
  			if (*rsize >= 128 && rdesc[64] == 0xff && rdesc[65] == 0x7f
  					&& rdesc[69] == 0xff && rdesc[70] == 0x7f) {
  				hid_info(hdev, "Fixing up report descriptor
  ");
  				rdesc[65] = rdesc[70] = 0x2f;
  			}
  			break;
  		}
  
  	}
  	return rdesc;
  }

  static const struct hid_device_id ch_devices[] = {
  	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },

  	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },

  	{ HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_ACER_SWITCH12) },

  	{ }
  };
  MODULE_DEVICE_TABLE(hid, ch_devices);
  
  static struct hid_driver ch_driver = {
  	.name = "chicony",
  	.id_table = ch_devices,

  	.report_fixup = ch_switch12_report_fixup,

  	.input_mapping = ch_input_mapping,
  };

  module_hid_driver(ch_driver);

  MODULE_LICENSE("GPL");