/*
* 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]>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/

#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_ */