// SPDX-License-Identifier: GPL-2.0 /* * RTC driver for the Micro Crystal RV3032 * * Copyright (C) 2020 Micro Crystal SA * * Alexandre Belloni <[email protected]> * */ #include <linux/clk.h> #include <linux/clk-provider.h> #include <linux/bcd.h> #include <linux/bitfield.h> #include <linux/bitops.h> #include <linux/hwmon.h> #include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/kernel.h> #include <linux/log2.h> #include <linux/module.h> #include <linux/of.h> #include <linux/regmap.h> #include <linux/rtc.h> #define RV3032_SEC … #define RV3032_MIN … #define RV3032_HOUR … #define RV3032_WDAY … #define RV3032_DAY … #define RV3032_MONTH … #define RV3032_YEAR … #define RV3032_ALARM_MIN … #define RV3032_ALARM_HOUR … #define RV3032_ALARM_DAY … #define RV3032_STATUS … #define RV3032_TLSB … #define RV3032_TMSB … #define RV3032_CTRL1 … #define RV3032_CTRL2 … #define RV3032_CTRL3 … #define RV3032_TS_CTRL … #define RV3032_CLK_IRQ … #define RV3032_EEPROM_ADDR … #define RV3032_EEPROM_DATA … #define RV3032_EEPROM_CMD … #define RV3032_RAM1 … #define RV3032_PMU … #define RV3032_OFFSET … #define RV3032_CLKOUT1 … #define RV3032_CLKOUT2 … #define RV3032_TREF0 … #define RV3032_TREF1 … #define RV3032_STATUS_VLF … #define RV3032_STATUS_PORF … #define RV3032_STATUS_EVF … #define RV3032_STATUS_AF … #define RV3032_STATUS_TF … #define RV3032_STATUS_UF … #define RV3032_STATUS_TLF … #define RV3032_STATUS_THF … #define RV3032_TLSB_CLKF … #define RV3032_TLSB_EEBUSY … #define RV3032_TLSB_TEMP … #define RV3032_CLKOUT2_HFD_MSK … #define RV3032_CLKOUT2_FD_MSK … #define RV3032_CLKOUT2_OS … #define RV3032_CTRL1_EERD … #define RV3032_CTRL1_WADA … #define RV3032_CTRL2_STOP … #define RV3032_CTRL2_EIE … #define RV3032_CTRL2_AIE … #define RV3032_CTRL2_TIE … #define RV3032_CTRL2_UIE … #define RV3032_CTRL2_CLKIE … #define RV3032_CTRL2_TSE … #define RV3032_PMU_TCM … #define RV3032_PMU_TCR … #define RV3032_PMU_BSM … #define RV3032_PMU_NCLKE … #define RV3032_PMU_BSM_DSM … #define RV3032_PMU_BSM_LSM … #define RV3032_OFFSET_MSK … #define RV3032_EVT_CTRL_TSR … #define RV3032_EEPROM_CMD_UPDATE … #define RV3032_EEPROM_CMD_WRITE … #define RV3032_EEPROM_CMD_READ … #define RV3032_EEPROM_USER … #define RV3032_EEBUSY_POLL … #define RV3032_EEBUSY_TIMEOUT … #define OFFSET_STEP_PPT … struct rv3032_data { … }; static u16 rv3032_trickle_resistors[] = …; static u16 rv3032_trickle_voltages[] = …; static int rv3032_exit_eerd(struct rv3032_data *rv3032, u32 eerd) { … } static int rv3032_enter_eerd(struct rv3032_data *rv3032, u32 *eerd) { … } static int rv3032_update_cfg(struct rv3032_data *rv3032, unsigned int reg, unsigned int mask, unsigned int val) { … } static irqreturn_t rv3032_handle_irq(int irq, void *dev_id) { … } static int rv3032_get_time(struct device *dev, struct rtc_time *tm) { … } static int rv3032_set_time(struct device *dev, struct rtc_time *tm) { … } static int rv3032_get_alarm(struct device *dev, struct rtc_wkalrm *alrm) { … } static int rv3032_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) { … } static int rv3032_alarm_irq_enable(struct device *dev, unsigned int enabled) { … } static int rv3032_read_offset(struct device *dev, long *offset) { … } static int rv3032_set_offset(struct device *dev, long offset) { … } static int rv3032_param_get(struct device *dev, struct rtc_param *param) { … } static int rv3032_param_set(struct device *dev, struct rtc_param *param) { … } static int rv3032_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) { … } static int rv3032_nvram_write(void *priv, unsigned int offset, void *val, size_t bytes) { … } static int rv3032_nvram_read(void *priv, unsigned int offset, void *val, size_t bytes) { … } static int rv3032_eeprom_write(void *priv, unsigned int offset, void *val, size_t bytes) { … } static int rv3032_eeprom_read(void *priv, unsigned int offset, void *val, size_t bytes) { … } static int rv3032_trickle_charger_setup(struct device *dev, struct rv3032_data *rv3032) { … } #ifdef CONFIG_COMMON_CLK #define clkout_hw_to_rv3032(hw) … static int clkout_xtal_rates[] = …; #define RV3032_HFD_STEP … static unsigned long rv3032_clkout_recalc_rate(struct clk_hw *hw, unsigned long parent_rate) { … } static long rv3032_clkout_round_rate(struct clk_hw *hw, unsigned long rate, unsigned long *prate) { … } static int rv3032_clkout_set_rate(struct clk_hw *hw, unsigned long rate, unsigned long parent_rate) { … } static int rv3032_clkout_prepare(struct clk_hw *hw) { … } static void rv3032_clkout_unprepare(struct clk_hw *hw) { … } static int rv3032_clkout_is_prepared(struct clk_hw *hw) { … } static const struct clk_ops rv3032_clkout_ops = …; static int rv3032_clkout_register_clk(struct rv3032_data *rv3032, struct i2c_client *client) { … } #endif static int rv3032_hwmon_read_temp(struct device *dev, long *mC) { … } static umode_t rv3032_hwmon_is_visible(const void *data, enum hwmon_sensor_types type, u32 attr, int channel) { … } static int rv3032_hwmon_read(struct device *dev, enum hwmon_sensor_types type, u32 attr, int channel, long *temp) { … } static const struct hwmon_channel_info * const rv3032_hwmon_info[] = …; static const struct hwmon_ops rv3032_hwmon_hwmon_ops = …; static const struct hwmon_chip_info rv3032_hwmon_chip_info = …; static void rv3032_hwmon_register(struct device *dev) { … } static const struct rtc_class_ops rv3032_rtc_ops = …; static const struct regmap_config regmap_config = …; static int rv3032_probe(struct i2c_client *client) { … } static const struct acpi_device_id rv3032_i2c_acpi_match[] = …; MODULE_DEVICE_TABLE(acpi, rv3032_i2c_acpi_match); static const __maybe_unused struct of_device_id rv3032_of_match[] = …; MODULE_DEVICE_TABLE(of, rv3032_of_match); static struct i2c_driver rv3032_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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