// SPDX-License-Identifier: GPL-2.0 /* * A driver for the I2C members of the Abracon AB x8xx RTC family, * and compatible: AB 1805 and AB 0805 * * Copyright 2014-2015 Macq S.A. * * Author: Philippe De Muyter <[email protected]> * Author: Alexandre Belloni <[email protected]> * */ #include <linux/bcd.h> #include <linux/bitfield.h> #include <linux/i2c.h> #include <linux/kstrtox.h> #include <linux/module.h> #include <linux/of.h> #include <linux/rtc.h> #include <linux/watchdog.h> #define ABX8XX_REG_HTH … #define ABX8XX_REG_SC … #define ABX8XX_REG_MN … #define ABX8XX_REG_HR … #define ABX8XX_REG_DA … #define ABX8XX_REG_MO … #define ABX8XX_REG_YR … #define ABX8XX_REG_WD … #define ABX8XX_REG_AHTH … #define ABX8XX_REG_ASC … #define ABX8XX_REG_AMN … #define ABX8XX_REG_AHR … #define ABX8XX_REG_ADA … #define ABX8XX_REG_AMO … #define ABX8XX_REG_AWD … #define ABX8XX_REG_STATUS … #define ABX8XX_STATUS_AF … #define ABX8XX_STATUS_BLF … #define ABX8XX_STATUS_WDT … #define ABX8XX_REG_CTRL1 … #define ABX8XX_CTRL_WRITE … #define ABX8XX_CTRL_ARST … #define ABX8XX_CTRL_12_24 … #define ABX8XX_REG_CTRL2 … #define ABX8XX_CTRL2_RSVD … #define ABX8XX_REG_IRQ … #define ABX8XX_IRQ_AIE … #define ABX8XX_IRQ_IM_1_4 … #define ABX8XX_REG_CD_TIMER_CTL … #define ABX8XX_REG_OSC … #define ABX8XX_OSC_FOS … #define ABX8XX_OSC_BOS … #define ABX8XX_OSC_ACAL_512 … #define ABX8XX_OSC_ACAL_1024 … #define ABX8XX_OSC_OSEL … #define ABX8XX_REG_OSS … #define ABX8XX_OSS_OF … #define ABX8XX_OSS_OMODE … #define ABX8XX_REG_WDT … #define ABX8XX_WDT_WDS … #define ABX8XX_WDT_BMB_MASK … #define ABX8XX_WDT_BMB_SHIFT … #define ABX8XX_WDT_MAX_TIME … #define ABX8XX_WDT_WRB_MASK … #define ABX8XX_WDT_WRB_1HZ … #define ABX8XX_REG_CFG_KEY … #define ABX8XX_CFG_KEY_OSC … #define ABX8XX_CFG_KEY_MISC … #define ABX8XX_REG_ID0 … #define ABX8XX_REG_OUT_CTRL … #define ABX8XX_OUT_CTRL_EXDS … #define ABX8XX_REG_TRICKLE … #define ABX8XX_TRICKLE_CHARGE_ENABLE … #define ABX8XX_TRICKLE_STANDARD_DIODE … #define ABX8XX_TRICKLE_SCHOTTKY_DIODE … #define ABX8XX_REG_EXTRAM … #define ABX8XX_EXTRAM_XADS … #define ABX8XX_SRAM_BASE … #define ABX8XX_SRAM_WIN_SIZE … #define ABX8XX_RAM_SIZE … #define NVMEM_ADDR_LOWER … #define NVMEM_ADDR_UPPER … static u8 trickle_resistors[] = …; enum abx80x_chip { … }; struct abx80x_cap { … }; static struct abx80x_cap abx80x_caps[] = …; struct abx80x_priv { … }; static int abx80x_write_config_key(struct i2c_client *client, u8 key) { … } static int abx80x_is_rc_mode(struct i2c_client *client) { … } static int abx80x_enable_trickle_charger(struct i2c_client *client, u8 trickle_cfg) { … } static int abx80x_rtc_read_time(struct device *dev, struct rtc_time *tm) { … } static int abx80x_rtc_set_time(struct device *dev, struct rtc_time *tm) { … } static irqreturn_t abx80x_handle_irq(int irq, void *dev_id) { … } static int abx80x_read_alarm(struct device *dev, struct rtc_wkalrm *t) { … } static int abx80x_set_alarm(struct device *dev, struct rtc_wkalrm *t) { … } static int abx80x_rtc_set_autocalibration(struct device *dev, int autocalibration) { … } static int abx80x_rtc_get_autocalibration(struct device *dev) { … } static ssize_t autocalibration_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t autocalibration_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RW(autocalibration); static ssize_t oscillator_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t oscillator_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR_RW(oscillator); static struct attribute *rtc_calib_attrs[] = …; static const struct attribute_group rtc_calib_attr_group = …; static int abx80x_alarm_irq_enable(struct device *dev, unsigned int enabled) { … } static int abx80x_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) { … } static const struct rtc_class_ops abx80x_rtc_ops = …; static int abx80x_dt_trickle_cfg(struct i2c_client *client) { … } #ifdef CONFIG_WATCHDOG static inline u8 timeout_bits(unsigned int timeout) { … } static int __abx80x_wdog_set_timeout(struct watchdog_device *wdog, unsigned int timeout) { … } static int abx80x_wdog_set_timeout(struct watchdog_device *wdog, unsigned int new_timeout) { … } static int abx80x_wdog_ping(struct watchdog_device *wdog) { … } static int abx80x_wdog_start(struct watchdog_device *wdog) { … } static int abx80x_wdog_stop(struct watchdog_device *wdog) { … } static const struct watchdog_info abx80x_wdog_info = …; static const struct watchdog_ops abx80x_wdog_ops = …; static int abx80x_setup_watchdog(struct abx80x_priv *priv) { … } #else static int abx80x_setup_watchdog(struct abx80x_priv *priv) { return 0; } #endif static int abx80x_nvmem_xfer(struct abx80x_priv *priv, unsigned int offset, void *val, size_t bytes, bool write) { … } static int abx80x_nvmem_read(void *priv, unsigned int offset, void *val, size_t bytes) { … } static int abx80x_nvmem_write(void *priv, unsigned int offset, void *val, size_t bytes) { … } static int abx80x_setup_nvmem(struct abx80x_priv *priv) { … } static const struct i2c_device_id abx80x_id[] = …; MODULE_DEVICE_TABLE(i2c, abx80x_id); static int abx80x_probe(struct i2c_client *client) { … } #ifdef CONFIG_OF static const struct of_device_id abx80x_of_match[] = …; MODULE_DEVICE_TABLE(of, abx80x_of_match); #endif static struct i2c_driver abx80x_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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