// SPDX-License-Identifier: GPL-2.0-only /* * An rtc driver for the Dallas DS1511 * * Copyright (C) 2006 Atsushi Nemoto <[email protected]> * Copyright (C) 2007 Andrew Sharp <[email protected]> * * Real time clock driver for the Dallas 1511 chip, which also * contains a watchdog timer. There is a tiny amount of code that * platform code could use to mess with the watchdog device a little * bit, but not a full watchdog driver. */ #include <linux/bcd.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/gfp.h> #include <linux/delay.h> #include <linux/interrupt.h> #include <linux/rtc.h> #include <linux/platform_device.h> #include <linux/io.h> #include <linux/module.h> #define DS1511_SEC … #define DS1511_MIN … #define DS1511_HOUR … #define DS1511_DOW … #define DS1511_DOM … #define DS1511_MONTH … #define DS1511_YEAR … #define DS1511_CENTURY … #define DS1511_AM1_SEC … #define DS1511_AM2_MIN … #define DS1511_AM3_HOUR … #define DS1511_AM4_DATE … #define DS1511_WD_MSEC … #define DS1511_WD_SEC … #define DS1511_CONTROL_A … #define DS1511_CONTROL_B … #define DS1511_RAMADDR_LSB … #define DS1511_RAMDATA … #define DS1511_BLF1 … #define DS1511_BLF2 … #define DS1511_PRS … #define DS1511_PAB … #define DS1511_TDF … #define DS1511_KSF … #define DS1511_WDF … #define DS1511_IRQF … #define DS1511_TE … #define DS1511_CS … #define DS1511_BME … #define DS1511_TPE … #define DS1511_TIE … #define DS1511_KIE … #define DS1511_WDE … #define DS1511_WDS … #define DS1511_RAM_MAX … struct ds1511_data { … }; static DEFINE_SPINLOCK(ds1511_lock); static __iomem char *ds1511_base; static u32 reg_spacing = …; static void rtc_write(uint8_t val, uint32_t reg) { … } static uint8_t rtc_read(uint32_t reg) { … } static void rtc_disable_update(void) { … } static void rtc_enable_update(void) { … } static int ds1511_rtc_set_time(struct device *dev, struct rtc_time *rtc_tm) { … } static int ds1511_rtc_read_time(struct device *dev, struct rtc_time *rtc_tm) { … } static void ds1511_rtc_alarm_enable(unsigned int enabled) { … } static int ds1511_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) { … } static int ds1511_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) { … } static irqreturn_t ds1511_interrupt(int irq, void *dev_id) { … } static int ds1511_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) { … } static const struct rtc_class_ops ds1511_rtc_ops = …; static int ds1511_nvram_read(void *priv, unsigned int pos, void *buf, size_t size) { … } static int ds1511_nvram_write(void *priv, unsigned int pos, void *buf, size_t size) { … } static int ds1511_rtc_probe(struct platform_device *pdev) { … } /* work with hotplug and coldplug */ MODULE_ALIAS(…) …; static struct platform_driver ds1511_rtc_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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