m48t59.h

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/*
 * 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_ */