/* * 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; }