rtc-nct3018y.c | Explore in Territory

// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2022 Nuvoton Technology Corporation

#include <linux/bcd.h>
#include <linux/clk-provider.h>
#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/rtc.h>
#include <linux/slab.h>

#define NCT3018Y_REG_SC …
#define NCT3018Y_REG_SCA …
#define NCT3018Y_REG_MN …
#define NCT3018Y_REG_MNA …
#define NCT3018Y_REG_HR …
#define NCT3018Y_REG_HRA …
#define NCT3018Y_REG_DW …
#define NCT3018Y_REG_DM …
#define NCT3018Y_REG_MO …
#define NCT3018Y_REG_YR …
#define NCT3018Y_REG_CTRL …
#define NCT3018Y_REG_ST …
#define NCT3018Y_REG_CLKO …
#define NCT3018Y_REG_PART …

#define NCT3018Y_BIT_AF …
#define NCT3018Y_BIT_ST …
#define NCT3018Y_BIT_DM …
#define NCT3018Y_BIT_HF …
#define NCT3018Y_BIT_DSM …
#define NCT3018Y_BIT_AIE …
#define NCT3018Y_BIT_OFIE …
#define NCT3018Y_BIT_CIE …
#define NCT3018Y_BIT_TWO …

#define NCT3018Y_REG_BAT_MASK …
#define NCT3018Y_REG_CLKO_F_MASK …
#define NCT3018Y_REG_CLKO_CKE …
#define NCT3018Y_REG_PART_NCT3018Y …

struct nct3018y { … };

static int nct3018y_set_alarm_mode(struct i2c_client *client, bool on)
{ … }

static int nct3018y_get_alarm_mode(struct i2c_client *client, unsigned char *alarm_enable,
				   unsigned char *alarm_flag)
{ … }

static irqreturn_t nct3018y_irq(int irq, void *dev_id)
{ … }

/*
 * In the routines that deal directly with the nct3018y hardware, we use
 * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch.
 */
static int nct3018y_rtc_read_time(struct device *dev, struct rtc_time *tm)
{ … }

static int nct3018y_rtc_set_time(struct device *dev, struct rtc_time *tm)
{ … }

static int nct3018y_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *tm)
{ … }

static int nct3018y_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *tm)
{ … }

static int nct3018y_irq_enable(struct device *dev, unsigned int enabled)
{ … }

static int nct3018y_ioctl(struct device *dev, unsigned int cmd, unsigned long arg)
{ … }

#ifdef CONFIG_COMMON_CLK
/*
 * Handling of the clkout
 */

#define clkout_hw_to_nct3018y(_hw) …

static const int clkout_rates[] = …;

static unsigned long nct3018y_clkout_recalc_rate(struct clk_hw *hw,
						 unsigned long parent_rate)
{ … }

static long nct3018y_clkout_round_rate(struct clk_hw *hw, unsigned long rate,
				       unsigned long *prate)
{ … }

static int nct3018y_clkout_set_rate(struct clk_hw *hw, unsigned long rate,
				    unsigned long parent_rate)
{ … }

static int nct3018y_clkout_control(struct clk_hw *hw, bool enable)
{ … }

static int nct3018y_clkout_prepare(struct clk_hw *hw)
{ … }

static void nct3018y_clkout_unprepare(struct clk_hw *hw)
{ … }

static int nct3018y_clkout_is_prepared(struct clk_hw *hw)
{ … }

static const struct clk_ops nct3018y_clkout_ops = …;

static struct clk *nct3018y_clkout_register_clk(struct nct3018y *nct3018y)
{ … }
#endif

static const struct rtc_class_ops nct3018y_rtc_ops = …;

static int nct3018y_probe(struct i2c_client *client)
{ … }

static const struct i2c_device_id nct3018y_id[] = …;
MODULE_DEVICE_TABLE(i2c, nct3018y_id);

static const struct of_device_id nct3018y_of_match[] = …;
MODULE_DEVICE_TABLE(of, nct3018y_of_match);

static struct i2c_driver nct3018y_driver = …;

module_i2c_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;
linux/drivers/rtc/rtc-nct3018y.c
