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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859606162636465/* SPDX-License-Identifier: GPL-2.0-only *//* * include/linux/rtc/m48t59.h * * Definitions for the platform data of m48t59 RTC chip driver. * * Copyright (c) 2007 Wind River Systems, Inc. * * Mark Zhan <rongkai.zhan@windriver.com> */
#ifndef _LINUX_RTC_M48T59_H_#define _LINUX_RTC_M48T59_H_
/* * M48T59 Register Offset */#define M48T59_YEAR 0xf#define M48T59_MONTH 0xe#define M48T59_MDAY 0xd /* Day of Month */#define M48T59_WDAY 0xc /* Day of Week */#define M48T59_WDAY_CB 0x20 /* Century Bit */#define M48T59_WDAY_CEB 0x10 /* Century Enable Bit */#define M48T59_HOUR 0xb#define M48T59_MIN 0xa#define M48T59_SEC 0x9#define M48T59_CNTL 0x8#define M48T59_CNTL_READ 0x40#define M48T59_CNTL_WRITE 0x80#define M48T59_WATCHDOG 0x7#define M48T59_INTR 0x6#define M48T59_INTR_AFE 0x80 /* Alarm Interrupt Enable */#define M48T59_INTR_ABE 0x20#define M48T59_ALARM_DATE 0x5#define M48T59_ALARM_HOUR 0x4#define M48T59_ALARM_MIN 0x3#define M48T59_ALARM_SEC 0x2#define M48T59_UNUSED 0x1#define M48T59_FLAGS 0x0#define M48T59_FLAGS_WDT 0x80 /* watchdog timer expired */#define M48T59_FLAGS_AF 0x40 /* alarm */#define M48T59_FLAGS_BF 0x10 /* low battery */
#define M48T59RTC_TYPE_M48T59 0 /* to keep compatibility */#define M48T59RTC_TYPE_M48T02 1#define M48T59RTC_TYPE_M48T08 2
struct m48t59_plat_data { /* The method to access M48T59 registers */ void (*write_byte)(struct device *dev, u32 ofs, u8 val); unsigned char (*read_byte)(struct device *dev, u32 ofs);
int type; /* RTC model */
/* ioaddr mapped externally */ void __iomem *ioaddr; /* offset to RTC registers, automatically set according to the type */ unsigned int offset;
/* YY digits (in RTC) are offset, i.e. year is 1900 + yy_offset + YY */ int yy_offset;};
#endif /* _LINUX_RTC_M48T59_H_ */