// SPDX-License-Identifier: GPL-2.0-only /* * An rtc driver for the Dallas DS1742 * * Copyright (C) 2006 Atsushi Nemoto <[email protected]> * * Copyright (C) 2006 Torsten Ertbjerg Rasmussen <[email protected]> * - nvram size determined from resource * - this ds1742 driver now supports ds1743. */ #include <linux/bcd.h> #include <linux/kernel.h> #include <linux/gfp.h> #include <linux/delay.h> #include <linux/jiffies.h> #include <linux/rtc.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/io.h> #include <linux/module.h> #define RTC_SIZE … #define RTC_CONTROL … #define RTC_CENTURY … #define RTC_SECONDS … #define RTC_MINUTES … #define RTC_HOURS … #define RTC_DAY … #define RTC_DATE … #define RTC_MONTH … #define RTC_YEAR … #define RTC_CENTURY_MASK … #define RTC_SECONDS_MASK … #define RTC_DAY_MASK … /* Bits in the Control/Century register */ #define RTC_WRITE … #define RTC_READ … /* Bits in the Seconds register */ #define RTC_STOP … /* Bits in the Day register */ #define RTC_BATT_FLAG … struct rtc_plat_data { … }; static int ds1742_rtc_set_time(struct device *dev, struct rtc_time *tm) { … } static int ds1742_rtc_read_time(struct device *dev, struct rtc_time *tm) { … } static const struct rtc_class_ops ds1742_rtc_ops = …; static int ds1742_nvram_read(void *priv, unsigned int pos, void *val, size_t bytes) { … } static int ds1742_nvram_write(void *priv, unsigned int pos, void *val, size_t bytes) { … } static int ds1742_rtc_probe(struct platform_device *pdev) { … } static const struct of_device_id __maybe_unused ds1742_rtc_of_match[] = …; MODULE_DEVICE_TABLE(of, ds1742_rtc_of_match); static struct platform_driver ds1742_rtc_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_ALIAS(…) …;
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