release/src-rt-6.x.4708/linux/linux-2.6.36/arch/mips/loongson/common/time.c

   1 /*
   2  * Copyright (C) 2007 Lemote, Inc. & Institute of Computing Technology
   3  * Author: Fuxin Zhang, zhangfx@lemote.com
   4  *
   5  * Copyright (C) 2009 Lemote Inc.
   6  * Author: Wu Zhangjin, wuzhangjin@gmail.com
   7  *
   8  *  This program is free software; you can redistribute  it and/or modify it
   9  *  under  the terms of  the GNU General  Public License as published by the
  10  *  Free Software Foundation;  either version 2 of the  License, or (at your
  11  *  option) any later version.
  12  */
  13 #include <asm/mc146818-time.h>
  14 #include <asm/time.h>
  15
  16 #include <loongson.h>
  17 #include <cs5536/cs5536_mfgpt.h>
  18
  19 void __init plat_time_init(void)
  20 {
  21         /* setup mips r4k timer */
  22         mips_hpt_frequency = cpu_clock_freq / 2;
  23
  24         setup_mfgpt0_timer();
  25 }
  26
  27 void read_persistent_clock(struct timespec *ts)
  28 {
  29         ts->tv_sec = mc146818_get_cmos_time();
  30         ts->tv_nsec = 0;
  31 }