Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  * Copyright (C) 2011 Pengutronix
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <linux/leds.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)  * gpio_led_register_device - register a gpio-led device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)  * @pdata: the platform data used for the new device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)  * Makes a copy of pdata and pdata->leds and registers a new leds-gpio device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16)  * with the result. This allows to have pdata and pdata-leds in .init.rodata
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)  * and so saves some bytes compared to a static struct platform_device with
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18)  * static platform data.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)  * Returns the registered device or an error pointer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) struct platform_device *__init gpio_led_register_device(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 		int id, const struct gpio_led_platform_data *pdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 	struct platform_device *ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	struct gpio_led_platform_data _pdata = *pdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	if (!pdata->num_leds)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 		return ERR_PTR(-EINVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	_pdata.leds = kmemdup(pdata->leds,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 			pdata->num_leds * sizeof(*pdata->leds), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	if (!_pdata.leds)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 		return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	ret = platform_device_register_resndata(NULL, "leds-gpio", id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 			NULL, 0, &_pdata, sizeof(_pdata));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	if (IS_ERR(ret))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 		kfree(_pdata.leds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) }