// SPDX-License-Identifier: GPL-2.0-only /* * An I2C driver for the Philips PCF8563 RTC * Copyright 2005-06 Tower Technologies * * Author: Alessandro Zummo <[email protected]> * Maintainers: http://www.nslu2-linux.org/ * * based on the other drivers in this same directory. * * https://www.nxp.com/docs/en/data-sheet/PCF8563.pdf */ #include <linux/clk-provider.h> #include <linux/i2c.h> #include <linux/bcd.h> #include <linux/rtc.h> #include <linux/slab.h> #include <linux/module.h> #include <linux/of.h> #include <linux/err.h> #define PCF8563_REG_ST1 … #define PCF8563_REG_ST2 … #define PCF8563_BIT_AIE … #define PCF8563_BIT_AF … #define PCF8563_BITS_ST2_N … #define PCF8563_REG_SC … #define PCF8563_REG_MN … #define PCF8563_REG_HR … #define PCF8563_REG_DM … #define PCF8563_REG_DW … #define PCF8563_REG_MO … #define PCF8563_REG_YR … #define PCF8563_REG_AMN … #define PCF8563_REG_CLKO … #define PCF8563_REG_CLKO_FE … #define PCF8563_REG_CLKO_F_MASK … #define PCF8563_REG_CLKO_F_32768HZ … #define PCF8563_REG_CLKO_F_1024HZ … #define PCF8563_REG_CLKO_F_32HZ … #define PCF8563_REG_CLKO_F_1HZ … #define PCF8563_REG_TMRC … #define PCF8563_TMRC_ENABLE … #define PCF8563_TMRC_4096 … #define PCF8563_TMRC_64 … #define PCF8563_TMRC_1 … #define PCF8563_TMRC_1_60 … #define PCF8563_TMRC_MASK … #define PCF8563_REG_TMR … #define PCF8563_SC_LV … #define PCF8563_MO_C … static struct i2c_driver pcf8563_driver; struct pcf8563 { … }; static int pcf8563_read_block_data(struct i2c_client *client, unsigned char reg, unsigned char length, unsigned char *buf) { … } static int pcf8563_write_block_data(struct i2c_client *client, unsigned char reg, unsigned char length, unsigned char *buf) { … } static int pcf8563_set_alarm_mode(struct i2c_client *client, bool on) { … } static int pcf8563_get_alarm_mode(struct i2c_client *client, unsigned char *en, unsigned char *pen) { … } static irqreturn_t pcf8563_irq(int irq, void *dev_id) { … } /* * In the routines that deal directly with the pcf8563 hardware, we use * rtc_time -- month 0-11, hour 0-23, yr = calendar year-epoch. */ static int pcf8563_rtc_read_time(struct device *dev, struct rtc_time *tm) { … } static int pcf8563_rtc_set_time(struct device *dev, struct rtc_time *tm) { … } static int pcf8563_rtc_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) { … } static int pcf8563_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *tm) { … } static int pcf8563_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *tm) { … } static int pcf8563_irq_enable(struct device *dev, unsigned int enabled) { … } #ifdef CONFIG_COMMON_CLK /* * Handling of the clkout */ #define clkout_hw_to_pcf8563(_hw) … static const int clkout_rates[] = …; static unsigned long pcf8563_clkout_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) { … } static long pcf8563_clkout_round_rate(struct clk_hw *hw, unsigned long rate, unsigned long *prate) { … } static int pcf8563_clkout_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate) { … } static int pcf8563_clkout_control(struct clk_hw *hw, bool enable) { … } static int pcf8563_clkout_prepare(struct clk_hw *hw) { … } static void pcf8563_clkout_unprepare(struct clk_hw *hw) { … } static int pcf8563_clkout_is_prepared(struct clk_hw *hw) { … } static const struct clk_ops pcf8563_clkout_ops = …; static struct clk *pcf8563_clkout_register_clk(struct pcf8563 *pcf8563) { … } #endif static const struct rtc_class_ops pcf8563_rtc_ops = …; static int pcf8563_probe(struct i2c_client *client) { … } static const struct i2c_device_id pcf8563_id[] = …; MODULE_DEVICE_TABLE(i2c, pcf8563_id); #ifdef CONFIG_OF static const struct of_device_id pcf8563_of_match[] = …; MODULE_DEVICE_TABLE(of, pcf8563_of_match); #endif static struct i2c_driver pcf8563_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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