1/*
2 *  Atheros AR71XX/AR724X/AR913X GPIO button support
3 *
4 *  Copyright (C) 2008-2010 Gabor Juhos <juhosg@openwrt.org>
5 *  Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
6 *
7 *  This program is free software; you can redistribute it and/or modify it
8 *  under the terms of the GNU General Public License version 2 as published
9 *  by the Free Software Foundation.
10 */
11
12#include "linux/init.h"
13#include "linux/slab.h"
14#include <linux/platform_device.h>
15
16#include "dev-gpio-buttons.h"
17
18void __init ath79_register_gpio_keys_polled(int id,
19					    unsigned poll_interval,
20					    unsigned nbuttons,
21					    struct gpio_keys_button *buttons)
22{
23	struct platform_device *pdev;
24	struct gpio_keys_platform_data pdata;
25	struct gpio_keys_button *p;
26	int err;
27
28	p = kmemdup(buttons, nbuttons * sizeof(*p), GFP_KERNEL);
29	if (!p)
30		return;
31
32	pdev = platform_device_alloc("gpio-keys-polled", id);
33	if (!pdev)
34		goto err_free_buttons;
35
36	memset(&pdata, 0, sizeof(pdata));
37	pdata.poll_interval = poll_interval;
38	pdata.nbuttons = nbuttons;
39	pdata.buttons = p;
40
41	err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
42	if (err)
43		goto err_put_pdev;
44
45	err = platform_device_add(pdev);
46	if (err)
47		goto err_put_pdev;
48
49	return;
50
51err_put_pdev:
52	platform_device_put(pdev);
53
54err_free_buttons:
55	kfree(p);
56}
57