LXR linux/arch/m68k/include/asm/rtc.h

   1/* include/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        if (mach_hwclk)
  40                mach_hwclk(0, time);
  41        return RTC_24H;
  42}
  43
  44static inline int set_rtc_time(struct rtc_time *time)
  45{
  46        if (mach_hwclk)
  47                return mach_hwclk(1, time);
  48        return -EINVAL;
  49}
  50
  51static inline unsigned int get_rtc_ss(void)
  52{
  53        if (mach_get_ss)
  54                return mach_get_ss();
  55        else{
  56                struct rtc_time h;
  57
  58                get_rtc_time(&h);
  59                return h.tm_sec;
  60        }
  61}
  62
  63static inline int get_rtc_pll(struct rtc_pll_info *pll)
  64{
  65        if (mach_get_rtc_pll)
  66                return mach_get_rtc_pll(pll);
  67        else
  68                return -EINVAL;
  69}
  70static inline int set_rtc_pll(struct rtc_pll_info *pll)
  71{
  72        if (mach_set_rtc_pll)
  73                return mach_set_rtc_pll(pll);
  74        else
  75                return -EINVAL;
  76}
  77#endif /* __KERNEL__ */
  78
  79#endif /* _ASM__RTC_H */
  80