board-dnskw.c

/*
 * Copyright 2012 (C), Jamie Lentin <jm@lentin.co.uk>
 *
 * arch/arm/mach-kirkwood/board-dnskw.c
 *
 * D-link DNS-320 & DNS-325 NAS Init for drivers not converted to
 * flattened device tree yet.
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2.  This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include "common.h"

/* Register any GPIO for output and set the value */
static void __init dnskw_gpio_register(unsigned gpio, char *name, int def)
{
	if (gpio_request(gpio, name) == 0 &&
	    gpio_direction_output(gpio, 0) == 0) {
		gpio_set_value(gpio, def);
		if (gpio_export(gpio, 0) != 0)
			pr_err("dnskw: Failed to export GPIO %s\n", name);
	} else
		pr_err("dnskw: Failed to register %s\n", name);
}

void __init dnskw_init(void)
{
	/* Set NAS to turn back on after a power failure */
	dnskw_gpio_register(37, "dnskw:power:recover", 1);
}