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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/drivers/hid/hid-monterey.c
15109 views
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/*

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 *  HID driver for some monterey "special" devices

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 *

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 *  Copyright (c) 1999 Andreas Gal

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 *  Copyright (c) 2000-2005 Vojtech Pavlik <[email protected]>

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 *  Copyright (c) 2005 Michael Haboustak <[email protected]> for Concept2, Inc

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 *  Copyright (c) 2006-2007 Jiri Kosina

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 *  Copyright (c) 2007 Paul Walmsley

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 *  Copyright (c) 2008 Jiri Slaby

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 */

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/*

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 * This program is free software; you can redistribute it and/or modify it

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 * under the terms of the GNU General Public License as published by the Free

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 * Software Foundation; either version 2 of the License, or (at your option)

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 * any later version.

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 */

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#include <linux/device.h>

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#include <linux/hid.h>

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#include <linux/module.h>

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#include "hid-ids.h"

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static __u8 *mr_report_fixup(struct hid_device *hdev, __u8 *rdesc,

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		unsigned int *rsize)

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{

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	if (*rsize >= 30 && rdesc[29] == 0x05 && rdesc[30] == 0x09) {

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		hid_info(hdev, "fixing up button/consumer in HID report descriptor\n");

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		rdesc[30] = 0x0c;

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	}

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	return rdesc;

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}

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#define mr_map_key_clear(c)	hid_map_usage_clear(hi, usage, bit, max, \

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					EV_KEY, (c))

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static int mr_input_mapping(struct hid_device *hdev, struct hid_input *hi,

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		struct hid_field *field, struct hid_usage *usage,

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		unsigned long **bit, int *max)

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{

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	if ((usage->hid & HID_USAGE_PAGE) != HID_UP_CONSUMER)

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		return 0;

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	switch (usage->hid & HID_USAGE) {

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	case 0x156: mr_map_key_clear(KEY_WORDPROCESSOR);	break;

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	case 0x157: mr_map_key_clear(KEY_SPREADSHEET);		break;

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	case 0x158: mr_map_key_clear(KEY_PRESENTATION);		break;

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	case 0x15c: mr_map_key_clear(KEY_STOP);			break;

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	default:

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		return 0;

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	}

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	return 1;

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}

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static const struct hid_device_id mr_devices[] = {

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	{ HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },

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	{ }

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};

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MODULE_DEVICE_TABLE(hid, mr_devices);

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static struct hid_driver mr_driver = {

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	.name = "monterey",

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	.id_table = mr_devices,

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	.report_fixup = mr_report_fixup,

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	.input_mapping = mr_input_mapping,

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};

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static int __init mr_init(void)

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{

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	return hid_register_driver(&mr_driver);

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}

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static void __exit mr_exit(void)

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{

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	hid_unregister_driver(&mr_driver);

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}

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module_init(mr_init);

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module_exit(mr_exit);

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MODULE_LICENSE("GPL");

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