buttons.c revision ada8e951
1/*
2 *  Cobalt buttons platform device.
3 *
4 *  Copyright (C) 2007  Yoichi Yuasa <yuasa@linux-mips.org>
5 *
6 *  This program is free software; you can redistribute it and/or modify
7 *  it under the terms of the GNU General Public License as published by
8 *  the Free Software Foundation; either version 2 of the License, or
9 *  (at your option) any later version.
10 *
11 *  This program is distributed in the hope that it will be useful,
12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14 *  GNU General Public License for more details.
15 *
16 *  You should have received a copy of the GNU General Public License
17 *  along with this program; if not, write to the Free Software
18 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
19 */
20
21#include <linux/platform_device.h>
22#include <linux/errno.h>
23#include <linux/init.h>
24
25static struct resource cobalt_buttons_resource __initdata = {
26	.start	= 0x1d000000,
27	.end	= 0x1d000003,
28	.flags	= IORESOURCE_MEM,
29};
30
31static __init int cobalt_add_buttons(void)
32{
33	struct platform_device *pd;
34	int error;
35
36	pd = platform_device_alloc("Cobalt buttons", -1);
37	if (!pd)
38		return -ENOMEM;
39
40	error = platform_device_add_resources(pd, &cobalt_buttons_resource, 1);
41	if (error)
42		goto err_free_device;
43
44	error = platform_device_add(pd);
45	if (error)
46		goto err_free_device;
47
48	return 0;
49
50 err_free_device:
51	platform_device_put(pd);
52	return error;
53}
54device_initcall(cobalt_add_buttons);
55