// SPDX-License-Identifier: GPL-2.0/* * RTC subsystem, nvmem interface * * Copyright (C) 2017 Alexandre Belloni */ #include <linux/err.h>#include <linux/types.h>#include <linux/nvmem-consumer.h>#include <linux/rtc.h> int devm_rtc_nvmem_register(struct rtc_device *rtc,		       struct nvmem_config *nvmem_config){	struct device *dev = rtc->dev.parent;	struct nvmem_device *nvmem; 	if (!nvmem_config)		return -ENODEV; 	nvmem_config->dev = dev;	nvmem_config->owner = rtc->owner;	nvmem_config->add_legacy_fixed_of_cells = true;	nvmem = devm_nvmem_register(dev, nvmem_config);	if (IS_ERR(nvmem))		dev_err(dev, "failed to register nvmem device for RTC\n"); 	return PTR_ERR_OR_ZERO(nvmem);}EXPORT_SYMBOL_GPL(devm_rtc_nvmem_register);