2010-01-30 17:25:20 +02:00
|
|
|
/*
|
|
|
|
|
* Ralink SoC GPIO button support
|
|
|
|
|
*
|
|
|
|
|
* Copyright (C) 2010 Gabor Juhos <juhosg@openwrt.org>
|
|
|
|
|
*
|
|
|
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
|
|
|
* under the terms of the GNU General Public License version 2 as published
|
|
|
|
|
* by the Free Software Foundation.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
#include "linux/init.h"
|
|
|
|
|
#include <linux/platform_device.h>
|
2010-05-28 22:45:28 +03:00
|
|
|
#include <linux/slab.h>
|
2010-01-30 17:25:20 +02:00
|
|
|
|
|
|
|
|
#include <asm/mach-ralink/dev-gpio-buttons.h>
|
|
|
|
|
|
|
|
|
|
void __init ramips_register_gpio_buttons(int id,
|
|
|
|
|
unsigned poll_interval,
|
|
|
|
|
unsigned nbuttons,
|
|
|
|
|
struct gpio_button *buttons)
|
|
|
|
|
{
|
|
|
|
|
struct platform_device *pdev;
|
|
|
|
|
struct gpio_buttons_platform_data pdata;
|
|
|
|
|
struct gpio_button *p;
|
|
|
|
|
int err;
|
|
|
|
|
|
|
|
|
|
p = kmalloc(nbuttons * sizeof(*p), GFP_KERNEL);
|
|
|
|
|
if (!p)
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
memcpy(p, buttons, nbuttons * sizeof(*p));
|
|
|
|
|
|
|
|
|
|
pdev = platform_device_alloc("gpio-buttons", id);
|
|
|
|
|
if (!pdev)
|
|
|
|
|
goto err_free_buttons;
|
|
|
|
|
|
|
|
|
|
memset(&pdata, 0, sizeof(pdata));
|
|
|
|
|
pdata.poll_interval = poll_interval;
|
|
|
|
|
pdata.nbuttons = nbuttons;
|
|
|
|
|
pdata.buttons = p;
|
|
|
|
|
|
|
|
|
|
err = platform_device_add_data(pdev, &pdata, sizeof(pdata));
|
|
|
|
|
if (err)
|
|
|
|
|
goto err_put_pdev;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
err = platform_device_add(pdev);
|
|
|
|
|
if (err)
|
|
|
|
|
goto err_put_pdev;
|
|
|
|
|
|
|
|
|
|
return;
|
|
|
|
|
|
|
|
|
|
err_put_pdev:
|
|
|
|
|
platform_device_put(pdev);
|
|
|
|
|
|
|
|
|
|
err_free_buttons:
|
|
|
|
|
kfree(p);
|
|
|
|
|
}
|
