linux-imx

/*

 * Copyright (c) 2008-2009 Nuvoton technology corporation.

 *

 * Wan ZongShun <mcuos.com@gmail.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation;version 2 of the License.

 *

 */

​

#include <linux/module.h>

#include <linux/init.h>

#include <linux/platform_device.h>

#include <linux/slab.h>

#include <linux/rtc.h>

#include <linux/delay.h>

#include <linux/io.h>

#include <linux/bcd.h>

​

/* RTC Control Registers */

#define REG_RTC_INIR        0x00

#define REG_RTC_AER     0x04

#define REG_RTC_FCR     0x08

#define REG_RTC_TLR     0x0C

#define REG_RTC_CLR     0x10

#define REG_RTC_TSSR        0x14

#define REG_RTC_DWR     0x18

#define REG_RTC_TAR     0x1C

#define REG_RTC_CAR     0x20

#define REG_RTC_LIR     0x24

#define REG_RTC_RIER        0x28

#define REG_RTC_RIIR        0x2C

#define REG_RTC_TTR     0x30

​

#define RTCSET          0x01

#define AERRWENB        0x10000

#define INIRRESET       0xa5eb1357

#define AERPOWERON      0xA965

#define AERPOWEROFF     0x0000

#define LEAPYEAR        0x0001

#define TICKENB         0x80

#define TICKINTENB      0x0002

#define ALARMINTENB     0x0001

#define MODE24          0x0001

​

struct nuc900_rtc {

    int         irq_num;

    void __iomem        *rtc_reg;

    struct rtc_device   *rtcdev;

};

​

struct nuc900_bcd_time {

    int bcd_sec;

    int bcd_min;

    int bcd_hour;

    int bcd_mday;

    int bcd_mon;

    int bcd_year;

};

​

static irqreturn_t nuc900_rtc_interrupt(int irq, void *_rtc)

{