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- /* 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 <[email protected]>
- */
- #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;
- };
- #endif /* _LINUX_RTC_M48T59_H_ */
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