arch/mips/kernel/genrtc.c

   1 /*
   2  * A glue layer that provides RTC read/write to drivers/char/genrtc.c driver
   3  * based on MIPS internal RTC routines.  It does take care locking
   4  * issues so that we are SMP/Preemption safe.
   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 #include <linux/spinlock.h>
  13
  14 #include <asm/rtc.h>
  15 #include <asm/time.h>
  16
  17 static DEFINE_SPINLOCK(mips_rtc_lock);
  18
  19 unsigned int get_rtc_time(struct rtc_time *time)
  20 {
  21         unsigned long nowtime;
  22
  23         spin_lock(&mips_rtc_lock);
  24         nowtime = rtc_get_time();
  25         to_tm(nowtime, time);
  26         time->tm_year -= 1900;
  27         spin_unlock(&mips_rtc_lock);
  28
  29         return RTC_24H;
  30 }
  31
  32 int set_rtc_time(struct rtc_time *time)
  33 {
  34         unsigned long nowtime;
  35         int ret;
  36
  37         spin_lock(&mips_rtc_lock);
  38         nowtime = mktime(time->tm_year+1900, time->tm_mon+1,
  39                         time->tm_mday, time->tm_hour, time->tm_min,
  40                         time->tm_sec);
  41         ret = rtc_set_time(nowtime);
  42         spin_unlock(&mips_rtc_lock);
  43
  44         return ret;
  45 }
  46
  47 unsigned int get_rtc_ss(void)
  48 {
  49         struct rtc_time h;
  50
  51         get_rtc_time(&h);
  52         return h.tm_sec;
  53 }
  54
  55 int get_rtc_pll(struct rtc_pll_info *pll)
  56 {
  57         return -EINVAL;
  58 }
  59
  60 int set_rtc_pll(struct rtc_pll_info *pll)
  61 {
  62         return -EINVAL;
  63 }
  64