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/* asm-m68k/rtc.h

 *

 * Copyright Richard Zidlicky

 * implementation details for genrtc/q40rtc driver

 */

/* permission is hereby granted to copy, modify and redistribute this code

 * in terms of the GNU Library General Public License, Version 2 or later,

 * at your option.

 */

#ifndef _ASM_RTC_H

#define _ASM_RTC_H

#ifdef __KERNEL__

#include <linux/rtc.h>

#include <asm/errno.h>

#include <asm/machdep.h>

#define RTC_PIE 0x40            /* periodic interrupt enable */

#define RTC_AIE 0x20            /* alarm interrupt enable */

#define RTC_UIE 0x10            /* update-finished interrupt enable */

/* some dummy definitions */

#define RTC_BATT_BAD 0x100      /* battery bad */

#define RTC_SQWE 0x08           /* enable square-wave output */

#define RTC_DM_BINARY 0x04      /* all time/date values are BCD if clear */

#define RTC_24H 0x02            /* 24 hour mode - else hours bit 7 means pm */

#define RTC_DST_EN 0x01         /* auto switch DST - works f. USA only */

static inline unsigned int get_rtc_time(struct rtc_time *time)

{

        /*

         * Only the values that we read from the RTC are set. We leave

         * tm_wday, tm_yday and tm_isdst untouched. Even though the

         * RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated

         * by the RTC when initially set to a non-zero value.

         */

        mach_hwclk(0, time);

        return RTC_24H;

}

static inline int set_rtc_time(struct rtc_time *time)

{

        return mach_hwclk(1, time);

}

static inline unsigned int get_rtc_ss(void)

{

        if (mach_get_ss)

                return mach_get_ss();

        else{

                struct rtc_time h;

                get_rtc_time(&h);

                return h.tm_sec;

        }

}

static inline int get_rtc_pll(struct rtc_pll_info *pll)

{

        if (mach_get_rtc_pll)

                return mach_get_rtc_pll(pll);

        else

                return -EINVAL;

}

static inline int set_rtc_pll(struct rtc_pll_info *pll)

{

        if (mach_set_rtc_pll)

                return mach_set_rtc_pll(pll);

        else

                return -EINVAL;

}

#endif /* __KERNEL__ */

#endif /* _ASM__RTC_H */