1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * RTC subsystem, nvmem interface
4  *
5  * Copyright (C) 2017 Alexandre Belloni
6  */
7 
8 #include <linux/err.h>
9 #include <linux/types.h>
10 #include <linux/nvmem-consumer.h>
11 #include <linux/rtc.h>
12 
devm_rtc_nvmem_register(struct rtc_device * rtc,struct nvmem_config * nvmem_config)13 int devm_rtc_nvmem_register(struct rtc_device *rtc,
14 		       struct nvmem_config *nvmem_config)
15 {
16 	struct device *dev = rtc->dev.parent;
17 	struct nvmem_device *nvmem;
18 
19 	if (!nvmem_config)
20 		return -ENODEV;
21 
22 	nvmem_config->dev = dev;
23 	nvmem_config->owner = rtc->owner;
24 	nvmem_config->add_legacy_fixed_of_cells = true;
25 	nvmem = devm_nvmem_register(dev, nvmem_config);
26 	if (IS_ERR(nvmem))
27 		dev_err(dev, "failed to register nvmem device for RTC\n");
28 
29 	return PTR_ERR_OR_ZERO(nvmem);
30 }
31 EXPORT_SYMBOL_GPL(devm_rtc_nvmem_register);
32