// SPDX-License-Identifier: GPL-2.0+ /* * Copyright (C) 2009-2010, Lars-Peter Clausen <[email protected]> * Copyright (C) 2010, Paul Cercueil <[email protected]> * JZ4740 SoC RTC driver */ #include <linux/clk.h> #include <linux/clk-provider.h> #include <linux/io.h> #include <linux/iopoll.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/pm_wakeirq.h> #include <linux/property.h> #include <linux/reboot.h> #include <linux/rtc.h> #include <linux/slab.h> #include <linux/spinlock.h> #define JZ_REG_RTC_CTRL … #define JZ_REG_RTC_SEC … #define JZ_REG_RTC_SEC_ALARM … #define JZ_REG_RTC_REGULATOR … #define JZ_REG_RTC_HIBERNATE … #define JZ_REG_RTC_WAKEUP_FILTER … #define JZ_REG_RTC_RESET_COUNTER … #define JZ_REG_RTC_SCRATCHPAD … #define JZ_REG_RTC_CKPCR … /* The following are present on the jz4780 */ #define JZ_REG_RTC_WENR … #define JZ_RTC_WENR_WEN … #define JZ_RTC_CTRL_WRDY … #define JZ_RTC_CTRL_1HZ … #define JZ_RTC_CTRL_1HZ_IRQ … #define JZ_RTC_CTRL_AF … #define JZ_RTC_CTRL_AF_IRQ … #define JZ_RTC_CTRL_AE … #define JZ_RTC_CTRL_ENABLE … /* Magic value to enable writes on jz4780 */ #define JZ_RTC_WENR_MAGIC … #define JZ_RTC_WAKEUP_FILTER_MASK … #define JZ_RTC_RESET_COUNTER_MASK … #define JZ_RTC_CKPCR_CK32PULL_DIS … #define JZ_RTC_CKPCR_CK32CTL_EN … enum jz4740_rtc_type { … }; struct jz4740_rtc { … }; static struct device *dev_for_power_off; static inline uint32_t jz4740_rtc_reg_read(struct jz4740_rtc *rtc, size_t reg) { … } static int jz4740_rtc_wait_write_ready(struct jz4740_rtc *rtc) { … } static inline int jz4780_rtc_enable_write(struct jz4740_rtc *rtc) { … } static inline int jz4740_rtc_reg_write(struct jz4740_rtc *rtc, size_t reg, uint32_t val) { … } static int jz4740_rtc_ctrl_set_bits(struct jz4740_rtc *rtc, uint32_t mask, bool set) { … } static int jz4740_rtc_read_time(struct device *dev, struct rtc_time *time) { … } static int jz4740_rtc_set_time(struct device *dev, struct rtc_time *time) { … } static int jz4740_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) { … } static int jz4740_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) { … } static int jz4740_rtc_alarm_irq_enable(struct device *dev, unsigned int enable) { … } static const struct rtc_class_ops jz4740_rtc_ops = …; static irqreturn_t jz4740_rtc_irq(int irq, void *data) { … } static void jz4740_rtc_poweroff(struct device *dev) { … } static void jz4740_rtc_power_off(void) { … } static const struct of_device_id jz4740_rtc_of_match[] = …; MODULE_DEVICE_TABLE(of, jz4740_rtc_of_match); static void jz4740_rtc_set_wakeup_params(struct jz4740_rtc *rtc, struct device_node *np, unsigned long rate) { … } static int jz4740_rtc_clk32k_enable(struct clk_hw *hw) { … } static void jz4740_rtc_clk32k_disable(struct clk_hw *hw) { … } static int jz4740_rtc_clk32k_is_enabled(struct clk_hw *hw) { … } static const struct clk_ops jz4740_rtc_clk32k_ops = …; static int jz4740_rtc_probe(struct platform_device *pdev) { … } static struct platform_driver jz4740_rtc_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …; MODULE_DESCRIPTION(…) …; MODULE_ALIAS(…) …;
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