| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Copyright (C) 2011 Pengutronix |
| * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de> |
| */ |
| #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 |
| * @id: platform ID |
| * |
| * 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; |
| } |
