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/*
* Copyright (C) 2011 Pengutronix
* Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
*
* 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/err.h>
#include <linux/leds.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
/**
* gpio_led_register_device - register a gpio-led device
* @pdata: the platform data used for the new device
*
* Makes a copy of pdata and pdata->leds and registers a new leds-gpio device
* with the result. This allows to have pdata and pdata-leds in .init.rodata
* and so saves some bytes compared to a static struct platform_device with
* static platform data.
*
* Returns the registered device or an error pointer.
*/
struct platform_device *__init gpio_led_register_device(
int id, const struct gpio_led_platform_data *pdata)
{
struct platform_device *ret;
struct gpio_led_platform_data _pdata = *pdata;
if (!pdata->num_leds)
return ERR_PTR(-EINVAL);
_pdata.leds = kmemdup(pdata->leds,
pdata->num_leds * sizeof(*pdata->leds), GFP_KERNEL);
if (!_pdata.leds)
return ERR_PTR(-ENOMEM);
ret = platform_device_register_resndata(NULL, "leds-gpio", id,
NULL, 0, &_pdata, sizeof(_pdata));
if (IS_ERR(ret))
kfree(_pdata.leds);
return ret;
}
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