| 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 | |
| 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, cfg: nvmem_config); |
| 26 | if (IS_ERR(ptr: nvmem)) |
| 27 | dev_err(dev, "failed to register nvmem device for RTC\n"); |
| 28 | |
| 29 | return PTR_ERR_OR_ZERO(ptr: nvmem); |
| 30 | } |
| 31 | EXPORT_SYMBOL_GPL(devm_rtc_nvmem_register); |
| 32 |