linux/drivers/rtc/rtc-zynqmp.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Xilinx Zynq Ultrascale+ MPSoC Real Time Clock Driver
 *
 * Copyright (C) 2015 Xilinx, Inc.
 *
 */

#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/io.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/rtc.h>

/* RTC Registers */
#define RTC_SET_TM_WR …
#define RTC_SET_TM_RD …
#define RTC_CALIB_WR …
#define RTC_CALIB_RD …
#define RTC_CUR_TM …
#define RTC_CUR_TICK …
#define RTC_ALRM …
#define RTC_INT_STS …
#define RTC_INT_MASK …
#define RTC_INT_EN …
#define RTC_INT_DIS …
#define RTC_CTRL …

#define RTC_FR_EN …
#define RTC_FR_DATSHIFT …
#define RTC_TICK_MASK …
#define RTC_INT_SEC …
#define RTC_INT_ALRM …
#define RTC_OSC_EN …
#define RTC_BATT_EN …

#define RTC_CALIB_DEF …
#define RTC_CALIB_MASK …
#define RTC_ALRM_MASK …
#define RTC_MSEC …
#define RTC_FR_MASK …
#define RTC_FR_MAX_TICKS …
#define RTC_PPB …
#define RTC_MIN_OFFSET …
#define RTC_MAX_OFFSET …

struct xlnx_rtc_dev { … };

static int xlnx_rtc_set_time(struct device *dev, struct rtc_time *tm)
{ … }

static int xlnx_rtc_read_time(struct device *dev, struct rtc_time *tm)
{ … }

static int xlnx_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{ … }

static int xlnx_rtc_alarm_irq_enable(struct device *dev, u32 enabled)
{ … }

static int xlnx_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm)
{ … }

static void xlnx_init_rtc(struct xlnx_rtc_dev *xrtcdev)
{ … }

static int xlnx_rtc_read_offset(struct device *dev, long *offset)
{ … }

static int xlnx_rtc_set_offset(struct device *dev, long offset)
{ … }

static const struct rtc_class_ops xlnx_rtc_ops = …;

static irqreturn_t xlnx_rtc_interrupt(int irq, void *id)
{ … }

static int xlnx_rtc_probe(struct platform_device *pdev)
{ … }

static void xlnx_rtc_remove(struct platform_device *pdev)
{ … }

static int __maybe_unused xlnx_rtc_suspend(struct device *dev)
{ … }

static int __maybe_unused xlnx_rtc_resume(struct device *dev)
{ … }

static SIMPLE_DEV_PM_OPS(xlnx_rtc_pm_ops, xlnx_rtc_suspend, xlnx_rtc_resume);

static const struct of_device_id xlnx_rtc_of_match[] = …;
MODULE_DEVICE_TABLE(of, xlnx_rtc_of_match);

static struct platform_driver xlnx_rtc_driver = …;

module_platform_driver(…) …;

MODULE_DESCRIPTION(…) …;
MODULE_AUTHOR(…) …;
MODULE_LICENSE(…) …;