// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) STMicroelectronics 2017 * Author: Amelie Delaunay <[email protected]> */ #include <linux/bcd.h> #include <linux/bitfield.h> #include <linux/clk.h> #include <linux/errno.h> #include <linux/iopoll.h> #include <linux/ioport.h> #include <linux/mfd/syscon.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/pm_wakeirq.h> #include <linux/regmap.h> #include <linux/rtc.h> #define DRIVER_NAME … /* STM32_RTC_TR bit fields */ #define STM32_RTC_TR_SEC_SHIFT … #define STM32_RTC_TR_SEC … #define STM32_RTC_TR_MIN_SHIFT … #define STM32_RTC_TR_MIN … #define STM32_RTC_TR_HOUR_SHIFT … #define STM32_RTC_TR_HOUR … /* STM32_RTC_DR bit fields */ #define STM32_RTC_DR_DATE_SHIFT … #define STM32_RTC_DR_DATE … #define STM32_RTC_DR_MONTH_SHIFT … #define STM32_RTC_DR_MONTH … #define STM32_RTC_DR_WDAY_SHIFT … #define STM32_RTC_DR_WDAY … #define STM32_RTC_DR_YEAR_SHIFT … #define STM32_RTC_DR_YEAR … /* STM32_RTC_CR bit fields */ #define STM32_RTC_CR_FMT … #define STM32_RTC_CR_ALRAE … #define STM32_RTC_CR_ALRAIE … /* STM32_RTC_ISR/STM32_RTC_ICSR bit fields */ #define STM32_RTC_ISR_ALRAWF … #define STM32_RTC_ISR_INITS … #define STM32_RTC_ISR_RSF … #define STM32_RTC_ISR_INITF … #define STM32_RTC_ISR_INIT … #define STM32_RTC_ISR_ALRAF … /* STM32_RTC_PRER bit fields */ #define STM32_RTC_PRER_PRED_S_SHIFT … #define STM32_RTC_PRER_PRED_S … #define STM32_RTC_PRER_PRED_A_SHIFT … #define STM32_RTC_PRER_PRED_A … /* STM32_RTC_ALRMAR and STM32_RTC_ALRMBR bit fields */ #define STM32_RTC_ALRMXR_SEC_SHIFT … #define STM32_RTC_ALRMXR_SEC … #define STM32_RTC_ALRMXR_SEC_MASK … #define STM32_RTC_ALRMXR_MIN_SHIFT … #define STM32_RTC_ALRMXR_MIN … #define STM32_RTC_ALRMXR_MIN_MASK … #define STM32_RTC_ALRMXR_HOUR_SHIFT … #define STM32_RTC_ALRMXR_HOUR … #define STM32_RTC_ALRMXR_PM … #define STM32_RTC_ALRMXR_HOUR_MASK … #define STM32_RTC_ALRMXR_DATE_SHIFT … #define STM32_RTC_ALRMXR_DATE … #define STM32_RTC_ALRMXR_WDSEL … #define STM32_RTC_ALRMXR_WDAY_SHIFT … #define STM32_RTC_ALRMXR_WDAY … #define STM32_RTC_ALRMXR_DATE_MASK … /* STM32_RTC_SR/_SCR bit fields */ #define STM32_RTC_SR_ALRA … /* STM32_RTC_VERR bit fields */ #define STM32_RTC_VERR_MINREV_SHIFT … #define STM32_RTC_VERR_MINREV … #define STM32_RTC_VERR_MAJREV_SHIFT … #define STM32_RTC_VERR_MAJREV … /* STM32_RTC_SECCFGR bit fields */ #define STM32_RTC_SECCFGR … #define STM32_RTC_SECCFGR_ALRA_SEC … #define STM32_RTC_SECCFGR_INIT_SEC … #define STM32_RTC_SECCFGR_SEC … /* STM32_RTC_RXCIDCFGR bit fields */ #define STM32_RTC_RXCIDCFGR(x) … #define STM32_RTC_RXCIDCFGR_CFEN … #define STM32_RTC_RXCIDCFGR_CID … #define STM32_RTC_RXCIDCFGR_CID1 … /* STM32_RTC_WPR key constants */ #define RTC_WPR_1ST_KEY … #define RTC_WPR_2ND_KEY … #define RTC_WPR_WRONG_KEY … /* Max STM32 RTC register offset is 0x3FC */ #define UNDEF_REG … /* STM32 RTC driver time helpers */ #define SEC_PER_DAY … struct stm32_rtc; struct stm32_rtc_registers { … }; struct stm32_rtc_events { … }; struct stm32_rtc_data { … }; struct stm32_rtc { … }; struct stm32_rtc_rif_resource { … }; static const struct stm32_rtc_rif_resource STM32_RTC_RES_ALRA = …; static const struct stm32_rtc_rif_resource STM32_RTC_RES_INIT = …; static void stm32_rtc_wpr_unlock(struct stm32_rtc *rtc) { … } static void stm32_rtc_wpr_lock(struct stm32_rtc *rtc) { … } static int stm32_rtc_enter_init_mode(struct stm32_rtc *rtc) { … } static void stm32_rtc_exit_init_mode(struct stm32_rtc *rtc) { … } static int stm32_rtc_wait_sync(struct stm32_rtc *rtc) { … } static void stm32_rtc_clear_event_flags(struct stm32_rtc *rtc, unsigned int flags) { … } static irqreturn_t stm32_rtc_alarm_irq(int irq, void *dev_id) { … } /* Convert rtc_time structure from bin to bcd format */ static void tm2bcd(struct rtc_time *tm) { … } /* Convert rtc_time structure from bcd to bin format */ static void bcd2tm(struct rtc_time *tm) { … } static int stm32_rtc_read_time(struct device *dev, struct rtc_time *tm) { … } static int stm32_rtc_set_time(struct device *dev, struct rtc_time *tm) { … } static int stm32_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) { … } static int stm32_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) { … } static int stm32_rtc_valid_alrm(struct device *dev, struct rtc_time *tm) { … } static int stm32_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) { … } static const struct rtc_class_ops stm32_rtc_ops = …; static void stm32_rtc_clear_events(struct stm32_rtc *rtc, unsigned int flags) { … } static const struct stm32_rtc_data stm32_rtc_data = …; static const struct stm32_rtc_data stm32h7_rtc_data = …; static void stm32mp1_rtc_clear_events(struct stm32_rtc *rtc, unsigned int flags) { … } static const struct stm32_rtc_data stm32mp1_data = …; static const struct stm32_rtc_data stm32mp25_data = …; static const struct of_device_id stm32_rtc_of_match[] = …; MODULE_DEVICE_TABLE(of, stm32_rtc_of_match); static int stm32_rtc_check_rif(struct stm32_rtc *stm32_rtc, struct stm32_rtc_rif_resource res) { … } static int stm32_rtc_init(struct platform_device *pdev, struct stm32_rtc *rtc) { … } static int stm32_rtc_probe(struct platform_device *pdev) { … } static void stm32_rtc_remove(struct platform_device *pdev) { … } static int stm32_rtc_suspend(struct device *dev) { … } static int stm32_rtc_resume(struct device *dev) { … } static const struct dev_pm_ops stm32_rtc_pm_ops = …; static struct platform_driver stm32_rtc_driver = …; module_platform_driver(…) …; MODULE_ALIAS(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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