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78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
/*
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* PMIC Real Time Clock driver for Nintendo Switch's MAX77620-RTC
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*
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* Copyright (c) 2018 CTCaer
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _MFD_MAX77620_RTC_H_
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#define _MFD_MAX77620_RTC_H_
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#include "../utils/types.h"
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#define MAX77620_RTC_I2C_ADDR 0x68
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#define MAX77620_RTC_NR_TIME_REGS 7
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#define MAX77620_RTC_CONTROLM_REG 0x02
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#define MAX77620_RTC_CONTROL_REG 0x03
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#define MAX77620_RTC_BIN_FORMAT (1 << 0)
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#define MAX77620_RTC_24H (1 << 1)
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#define MAX77620_RTC_UPDATE0_REG 0x04
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#define MAX77620_RTC_WRITE_UPDATE (1 << 0)
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#define MAX77620_RTC_READ_UPDATE (1 << 4)
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#define MAX77620_RTC_SEC_REG 0x07
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#define MAX77620_RTC_MIN_REG 0x08
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#define MAX77620_RTC_HOUR_REG 0x09
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#define MAX77620_RTC_HOUR_PM_MASK (1 << 6)
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#define MAX77620_RTC_WEEKDAY_REG 0x0A
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#define MAX77620_RTC_MONTH_REG 0x0B
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#define MAX77620_RTC_YEAR_REG 0x0C
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#define MAX77620_RTC_DATE_REG 0x0D
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#define MAX77620_ALARM1_SEC_REG 0x0E
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#define MAX77620_ALARM1_MIN_REG 0x0F
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#define MAX77620_ALARM1_HOUR_REG 0x10
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#define MAX77620_ALARM1_WEEKDAY_REG 0x11
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#define MAX77620_ALARM1_MONTH_REG 0x12
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#define MAX77620_ALARM1_YEAR_REG 0x13
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#define MAX77620_ALARM1_DATE_REG 0x14
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#define MAX77620_ALARM2_SEC_REG 0x15
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#define MAX77620_ALARM2_MIN_REG 0x16
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#define MAX77620_ALARM2_HOUR_REG 0x17
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#define MAX77620_ALARM2_WEEKDAY_REG 0x18
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#define MAX77620_ALARM2_MONTH_REG 0x19
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#define MAX77620_ALARM2_YEAR_REG 0x1A
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#define MAX77620_ALARM2_DATE_REG 0x1B
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#define MAX77620_RTC_ALARM_EN_MASK (1 << 7)
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typedef struct _rtc_time_t {
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u8 weekday;
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u8 sec;
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u8 min;
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u8 hour;
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u8 day;
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u8 month;
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u16 year;
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} rtc_time_t;
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void max77620_rtc_get_time(rtc_time_t *time);
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void max77620_rtc_stop_alarm();
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void max77620_rtc_epoch_to_date(u32 epoch, rtc_time_t *time);
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u32 max77620_rtc_date_to_epoch(const rtc_time_t *time, bool hos_encoding);
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#endif /* _MFD_MAX77620_RTC_H_ */
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