// SPDX-License-Identifier: GPL-2.0 /* * An I2C driver for the PCF85063 RTC * Copyright 2014 Rose Technology * * Author: Søren Andersen <[email protected]> * Maintainers: http://www.nslu2-linux.org/ * * Copyright (C) 2019 Micro Crystal AG * Author: Alexandre Belloni <[email protected]> */ #include <linux/clk-provider.h> #include <linux/i2c.h> #include <linux/bcd.h> #include <linux/rtc.h> #include <linux/module.h> #include <linux/of.h> #include <linux/pm_wakeirq.h> #include <linux/regmap.h> /* * Information for this driver was pulled from the following datasheets. * * https://www.nxp.com/docs/en/data-sheet/PCF85063A.pdf * https://www.nxp.com/docs/en/data-sheet/PCF85063TP.pdf * * PCF85063A -- Rev. 7 — 30 March 2018 * PCF85063TP -- Rev. 4 — 6 May 2015 * * https://www.microcrystal.com/fileadmin/Media/Products/RTC/App.Manual/RV-8263-C7_App-Manual.pdf * RV8263 -- Rev. 1.0 — January 2019 */ #define PCF85063_REG_CTRL1 … #define PCF85063_REG_CTRL1_CAP_SEL … #define PCF85063_REG_CTRL1_STOP … #define PCF85063_REG_CTRL1_EXT_TEST … #define PCF85063_REG_CTRL2 … #define PCF85063_CTRL2_AF … #define PCF85063_CTRL2_AIE … #define PCF85063_REG_OFFSET … #define PCF85063_OFFSET_SIGN_BIT … #define PCF85063_OFFSET_MODE … #define PCF85063_OFFSET_STEP0 … #define PCF85063_OFFSET_STEP1 … #define PCF85063_REG_CLKO_F_MASK … #define PCF85063_REG_CLKO_F_32768HZ … #define PCF85063_REG_CLKO_F_OFF … #define PCF85063_REG_RAM … #define PCF85063_REG_SC … #define PCF85063_REG_SC_OS … #define PCF85063_REG_ALM_S … #define PCF85063_AEN … struct pcf85063_config { … }; struct pcf85063 { … }; static int pcf85063_rtc_read_time(struct device *dev, struct rtc_time *tm) { … } static int pcf85063_rtc_set_time(struct device *dev, struct rtc_time *tm) { … } static int pcf85063_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) { … } static int pcf85063_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) { … } static int pcf85063_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) { … } static irqreturn_t pcf85063_rtc_handle_irq(int irq, void *dev_id) { … } static int pcf85063_read_offset(struct device *dev, long *offset) { … } static int pcf85063_set_offset(struct device *dev, long offset) { … } static int pcf85063_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) { … } static const struct rtc_class_ops pcf85063_rtc_ops = …; static int pcf85063_nvmem_read(void *priv, unsigned int offset, void *val, size_t bytes) { … } static int pcf85063_nvmem_write(void *priv, unsigned int offset, void *val, size_t bytes) { … } static int pcf85063_load_capacitance(struct pcf85063 *pcf85063, const struct device_node *np, unsigned int force_cap) { … } #ifdef CONFIG_COMMON_CLK /* * Handling of the clkout */ #define clkout_hw_to_pcf85063(_hw) … static int clkout_rates[] = …; static unsigned long pcf85063_clkout_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) { … } static long pcf85063_clkout_round_rate(struct clk_hw *hw, unsigned long rate, unsigned long *prate) { … } static int pcf85063_clkout_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate) { … } static int pcf85063_clkout_control(struct clk_hw *hw, bool enable) { … } static int pcf85063_clkout_prepare(struct clk_hw *hw) { … } static void pcf85063_clkout_unprepare(struct clk_hw *hw) { … } static int pcf85063_clkout_is_prepared(struct clk_hw *hw) { … } static const struct clk_ops pcf85063_clkout_ops = …; static struct clk *pcf85063_clkout_register_clk(struct pcf85063 *pcf85063) { … } #endif static const struct pcf85063_config config_pcf85063 = …; static const struct pcf85063_config config_pcf85063tp = …; static const struct pcf85063_config config_pcf85063a = …; static const struct pcf85063_config config_rv8263 = …; static int pcf85063_probe(struct i2c_client *client) { … } static const struct i2c_device_id pcf85063_ids[] = …; MODULE_DEVICE_TABLE(i2c, pcf85063_ids); #ifdef CONFIG_OF static const struct of_device_id pcf85063_of_match[] = …; MODULE_DEVICE_TABLE(of, pcf85063_of_match); #endif static struct i2c_driver pcf85063_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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