linux-old/include/asm-m68k/rtc.h
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   1/* asm-m68k/rtc.h
   2 *
   3 * Copyright Richard Zidlicky
   4 * implementation details for genrtc/q40rtc driver
   5 */
   6/* permission is hereby granted to copy, modify and redistribute this code
   7 * in terms of the GNU Library General Public License, Version 2 or later,
   8 * at your option.
   9 */
  10
  11#ifndef _ASM_RTC_H
  12#define _ASM_RTC_H
  13
  14#ifdef __KERNEL__
  15
  16#include <linux/rtc.h>
  17#include <asm/errno.h>
  18#include <asm/machdep.h>
  19
  20#define RTC_PIE 0x40            /* periodic interrupt enable */
  21#define RTC_AIE 0x20            /* alarm interrupt enable */
  22#define RTC_UIE 0x10            /* update-finished interrupt enable */
  23
  24/* some dummy definitions */
  25#define RTC_BATT_BAD 0x100      /* battery bad */
  26#define RTC_SQWE 0x08           /* enable square-wave output */
  27#define RTC_DM_BINARY 0x04      /* all time/date values are BCD if clear */
  28#define RTC_24H 0x02            /* 24 hour mode - else hours bit 7 means pm */
  29#define RTC_DST_EN 0x01         /* auto switch DST - works f. USA only */
  30
  31static inline unsigned int get_rtc_time(struct rtc_time *time)
  32{
  33        /*
  34         * Only the values that we read from the RTC are set. We leave
  35         * tm_wday, tm_yday and tm_isdst untouched. Even though the
  36         * RTC has RTC_DAY_OF_WEEK, we ignore it, as it is only updated
  37         * by the RTC when initially set to a non-zero value.
  38         */
  39        mach_hwclk(0, time);
  40        return RTC_24H;
  41}
  42
  43static inline int set_rtc_time(struct rtc_time *time)
  44{
  45        return mach_hwclk(1, time);
  46}
  47
  48static inline unsigned int get_rtc_ss(void)
  49{
  50        if (mach_get_ss)
  51                return mach_get_ss();
  52        else{
  53                struct rtc_time h;
  54                
  55                get_rtc_time(&h);
  56                return h.tm_sec;
  57        }
  58}
  59
  60static inline int get_rtc_pll(struct rtc_pll_info *pll)
  61{
  62        if (mach_get_rtc_pll)
  63                return mach_get_rtc_pll(pll);
  64        else
  65                return -EINVAL;
  66}
  67static inline int set_rtc_pll(struct rtc_pll_info *pll)
  68{
  69        if (mach_set_rtc_pll)
  70                return mach_set_rtc_pll(pll);
  71        else
  72                return -EINVAL;
  73}
  74#endif /* __KERNEL__ */
  75
  76#endif /* _ASM__RTC_H */
  77
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