include/asm-mips/rtc.h

   1 /*
   2  * include/asm-mips/rtc.h
   3  *
   4  * (Really an interface for drivers/char/genrtc.c)
   5  *
   6  * Copyright (C) 2004 MontaVista Software Inc.
   7  * Author: Jun Sun, jsun@mvista.com or jsun@junsun.net
   8  *
   9  * Please read the COPYING file for all license details.
  10  */
  11
  12 #ifndef _MIPS_RTC_H
  13 #define _MIPS_RTC_H
  14
  15 #ifdef __KERNEL__
  16
  17 #include <linux/spinlock.h>
  18 #include <linux/rtc.h>
  19 #include <asm/time.h>
  20
  21 #define RTC_PIE 0x40            /* periodic interrupt enable */
  22 #define RTC_AIE 0x20            /* alarm interrupt enable */
  23 #define RTC_UIE 0x10            /* update-finished interrupt enable */
  24
  25 /* some dummy definitions */
  26 #define RTC_BATT_BAD 0x100      /* battery bad */
  27 #define RTC_SQWE 0x08           /* enable square-wave output */
  28 #define RTC_DM_BINARY 0x04      /* all time/date values are BCD if clear */
  29 #define RTC_24H 0x02            /* 24 hour mode - else hours bit 7 means pm */
  30 #define RTC_DST_EN 0x01         /* auto switch DST - works f. USA only */
  31
  32 static DEFINE_SPINLOCK(mips_rtc_lock);
  33
  34 static inline unsigned int get_rtc_time(struct rtc_time *time)
  35 {
  36         unsigned long nowtime;
  37
  38         spin_lock(&mips_rtc_lock);
  39         nowtime = rtc_get_time();
  40         to_tm(nowtime, time);
  41         time->tm_year -= 1900;
  42         spin_unlock(&mips_rtc_lock);
  43
  44         return RTC_24H;
  45 }
  46
  47 static inline int set_rtc_time(struct rtc_time *time)
  48 {
  49         unsigned long nowtime;
  50         int ret;
  51
  52         spin_lock(&mips_rtc_lock);
  53         nowtime = mktime(time->tm_year+1900, time->tm_mon+1,
  54                         time->tm_mday, time->tm_hour, time->tm_min,
  55                         time->tm_sec);
  56         ret = rtc_set_time(nowtime);
  57         spin_unlock(&mips_rtc_lock);
  58
  59         return ret;
  60 }
  61
  62 static inline unsigned int get_rtc_ss(void)
  63 {
  64         struct rtc_time h;
  65
  66         get_rtc_time(&h);
  67         return h.tm_sec;
  68 }
  69
  70 static inline int get_rtc_pll(struct rtc_pll_info *pll)
  71 {
  72         return -EINVAL;
  73 }
  74
  75 static inline int set_rtc_pll(struct rtc_pll_info *pll)
  76 {
  77         return -EINVAL;
  78 }
  79 #endif
  80 #endif