arch/sh/kernel/time.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  *  arch/sh/kernel/time.c
   4  *
   5  *  Copyright (C) 1999  Tetsuya Okada & Niibe Yutaka
   6  *  Copyright (C) 2000  Philipp Rumpf <prumpf@tux.org>
   7  *  Copyright (C) 2002 - 2009  Paul Mundt
   8  *  Copyright (C) 2002  M. R. Brown  <mrbrown@linux-sh.org>
   9  */
  10 #include <linux/kernel.h>
  11 #include <linux/init.h>
  12 #include <linux/profile.h>
  13 #include <linux/timex.h>
  14 #include <linux/sched.h>
  15 #include <linux/clockchips.h>
  16 #include <linux/platform_device.h>
  17 #include <linux/smp.h>
  18 #include <linux/rtc.h>
  19 #include <asm/clock.h>
  20 #include <asm/rtc.h>
  21
  22 static void __init sh_late_time_init(void)
  23 {
  24         /*
  25          * Make sure all compiled-in early timers register themselves.
  26          *
  27          * Run probe() for two "earlytimer" devices, these will be the
  28          * clockevents and clocksource devices respectively. In the event
  29          * that only a clockevents device is available, we -ENODEV on the
  30          * clocksource and the jiffies clocksource is used transparently
  31          * instead. No error handling is necessary here.
  32          */
  33         early_platform_driver_register_all("earlytimer");
  34         early_platform_driver_probe("earlytimer", 2, 0);
  35 }
  36
  37 void __init time_init(void)
  38 {
  39         timer_probe();
  40
  41         clk_init();
  42
  43         late_time_init = sh_late_time_init;
  44 }