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
  31 static 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
  44 static 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
  51 static 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
  63 static 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 }
  70 static 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 */