// SPDX-License-Identifier: GPL-2.0-only /* * Micro Crystal RV-3029 / RV-3049 rtc class driver * * Author: Gregory Hermant <[email protected]> * Michael Buesch <[email protected]> * * based on previously existing rtc class drivers */ #include <linux/module.h> #include <linux/i2c.h> #include <linux/spi/spi.h> #include <linux/bcd.h> #include <linux/rtc.h> #include <linux/delay.h> #include <linux/of.h> #include <linux/hwmon.h> #include <linux/hwmon-sysfs.h> #include <linux/kstrtox.h> #include <linux/regmap.h> /* Register map */ /* control section */ #define RV3029_ONOFF_CTRL … #define RV3029_ONOFF_CTRL_WE … #define RV3029_ONOFF_CTRL_TE … #define RV3029_ONOFF_CTRL_TAR … #define RV3029_ONOFF_CTRL_EERE … #define RV3029_ONOFF_CTRL_SRON … #define RV3029_ONOFF_CTRL_TD0 … #define RV3029_ONOFF_CTRL_TD1 … #define RV3029_ONOFF_CTRL_CLKINT … #define RV3029_IRQ_CTRL … #define RV3029_IRQ_CTRL_AIE … #define RV3029_IRQ_CTRL_TIE … #define RV3029_IRQ_CTRL_V1IE … #define RV3029_IRQ_CTRL_V2IE … #define RV3029_IRQ_CTRL_SRIE … #define RV3029_IRQ_FLAGS … #define RV3029_IRQ_FLAGS_AF … #define RV3029_IRQ_FLAGS_TF … #define RV3029_IRQ_FLAGS_V1IF … #define RV3029_IRQ_FLAGS_V2IF … #define RV3029_IRQ_FLAGS_SRF … #define RV3029_STATUS … #define RV3029_STATUS_VLOW1 … #define RV3029_STATUS_VLOW2 … #define RV3029_STATUS_SR … #define RV3029_STATUS_PON … #define RV3029_STATUS_EEBUSY … #define RV3029_RST_CTRL … #define RV3029_RST_CTRL_SYSR … #define RV3029_CONTROL_SECTION_LEN … /* watch section */ #define RV3029_W_SEC … #define RV3029_W_MINUTES … #define RV3029_W_HOURS … #define RV3029_REG_HR_12_24 … #define RV3029_REG_HR_PM … #define RV3029_W_DATE … #define RV3029_W_DAYS … #define RV3029_W_MONTHS … #define RV3029_W_YEARS … #define RV3029_WATCH_SECTION_LEN … /* alarm section */ #define RV3029_A_SC … #define RV3029_A_MN … #define RV3029_A_HR … #define RV3029_A_DT … #define RV3029_A_DW … #define RV3029_A_MO … #define RV3029_A_YR … #define RV3029_A_AE_X … #define RV3029_ALARM_SECTION_LEN … /* timer section */ #define RV3029_TIMER_LOW … #define RV3029_TIMER_HIGH … /* temperature section */ #define RV3029_TEMP_PAGE … /* eeprom data section */ #define RV3029_E2P_EEDATA1 … #define RV3029_E2P_EEDATA2 … #define RV3029_E2PDATA_SECTION_LEN … /* eeprom control section */ #define RV3029_CONTROL_E2P_EECTRL … #define RV3029_EECTRL_THP … #define RV3029_EECTRL_THE … #define RV3029_EECTRL_FD0 … #define RV3029_EECTRL_FD1 … #define RV3029_TRICKLE_1K … #define RV3029_TRICKLE_5K … #define RV3029_TRICKLE_20K … #define RV3029_TRICKLE_80K … #define RV3029_TRICKLE_MASK … #define RV3029_TRICKLE_SHIFT … #define RV3029_CONTROL_E2P_XOFFS … #define RV3029_CONTROL_E2P_XOFFS_SIGN … #define RV3029_CONTROL_E2P_QCOEF … #define RV3029_CONTROL_E2P_TURNOVER … #define RV3029_CONTROL_E2P_TOV_MASK … /* user ram section */ #define RV3029_RAM_PAGE … #define RV3029_RAM_SECTION_LEN … struct rv3029_data { … }; static int rv3029_eeprom_busywait(struct rv3029_data *rv3029) { … } static int rv3029_eeprom_exit(struct rv3029_data *rv3029) { … } static int rv3029_eeprom_enter(struct rv3029_data *rv3029) { … } static int rv3029_eeprom_read(struct rv3029_data *rv3029, u8 reg, u8 buf[], size_t len) { … } static int rv3029_eeprom_write(struct rv3029_data *rv3029, u8 reg, u8 const buf[], size_t len) { … } static int rv3029_eeprom_update_bits(struct rv3029_data *rv3029, u8 reg, u8 mask, u8 set) { … } static irqreturn_t rv3029_handle_irq(int irq, void *dev_id) { … } static int rv3029_read_time(struct device *dev, struct rtc_time *tm) { … } static int rv3029_read_alarm(struct device *dev, struct rtc_wkalrm *alarm) { … } static int rv3029_alarm_irq_enable(struct device *dev, unsigned int enable) { … } static int rv3029_set_alarm(struct device *dev, struct rtc_wkalrm *alarm) { … } static int rv3029_set_time(struct device *dev, struct rtc_time *tm) { … } static int rv3029_ioctl(struct device *dev, unsigned int cmd, unsigned long arg) { … } static int rv3029_nvram_write(void *priv, unsigned int offset, void *val, size_t bytes) { … } static int rv3029_nvram_read(void *priv, unsigned int offset, void *val, size_t bytes) { … } static const struct rv3029_trickle_tab_elem { … } rv3029_trickle_tab[] = …; static void rv3029_trickle_config(struct device *dev) { … } #ifdef CONFIG_RTC_DRV_RV3029_HWMON static int rv3029_read_temp(struct rv3029_data *rv3029, int *temp_mC) { … } static ssize_t rv3029_hwmon_show_temp(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t rv3029_hwmon_set_update_interval(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t rv3029_hwmon_show_update_interval(struct device *dev, struct device_attribute *attr, char *buf) { … } static SENSOR_DEVICE_ATTR(temp1_input, S_IRUGO, rv3029_hwmon_show_temp, NULL, 0); static SENSOR_DEVICE_ATTR(update_interval, S_IWUSR | S_IRUGO, rv3029_hwmon_show_update_interval, rv3029_hwmon_set_update_interval, 0); static struct attribute *rv3029_hwmon_attrs[] = …; ATTRIBUTE_GROUPS(…); static void rv3029_hwmon_register(struct device *dev, const char *name) { … } #else /* CONFIG_RTC_DRV_RV3029_HWMON */ static void rv3029_hwmon_register(struct device *dev, const char *name) { } #endif /* CONFIG_RTC_DRV_RV3029_HWMON */ static const struct rtc_class_ops rv3029_rtc_ops = …; static int rv3029_probe(struct device *dev, struct regmap *regmap, int irq, const char *name) { … } static const struct regmap_range rv3029_holes_range[] = …; static const struct regmap_access_table rv3029_regs = …; static const struct regmap_config config = …; #if IS_ENABLED(CONFIG_I2C) static int rv3029_i2c_probe(struct i2c_client *client) { … } static const struct i2c_device_id rv3029_id[] = …; MODULE_DEVICE_TABLE(i2c, rv3029_id); static const __maybe_unused struct of_device_id rv3029_of_match[] = …; MODULE_DEVICE_TABLE(of, rv3029_of_match); static struct i2c_driver rv3029_driver = …; static int __init rv3029_register_driver(void) { … } static void rv3029_unregister_driver(void) { … } #else static int __init rv3029_register_driver(void) { return 0; } static void rv3029_unregister_driver(void) { } #endif #if IS_ENABLED(CONFIG_SPI_MASTER) static int rv3049_probe(struct spi_device *spi) { … } static struct spi_driver rv3049_driver = …; static int __init rv3049_register_driver(void) { … } static void __exit rv3049_unregister_driver(void) { … } #else static int __init rv3049_register_driver(void) { return 0; } static void __exit rv3049_unregister_driver(void) { } #endif static int __init rv30x9_init(void) { … } module_init(…) … static void __exit rv30x9_exit(void) { … } module_exit(…) MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_ALIAS(…) …;
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