target/linux/adm5120/files/arch/mips/adm5120/time.c

   1 /*
   2  *  $Id$
   3  *
   4  *  ADM5120 specific hooks for MIPS CPU Counter/Compare timer
   5  *
   6  *  Copyright (C) 2007 OpenWrt.org
   7  *  Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
   8  *
   9  *  This file was based on: arch/mips/gt64120/wrppmc/time.c
  10  *      Original author: Mark.Zhan
  11  *      Copyright (C) 1996, 1997, 2004 by Ralf Baechle
  12  *      Copyright (C) 2006, Wind River System Inc.
  13  *
  14  *  This program is free software; you can redistribute it and/or modify it
  15  *  under the terms of the GNU General Public License version 2 as published
  16  *  by the Free Software Foundation.
  17  *
  18  */
  19
  20 #include <linux/types.h>
  21 #include <linux/init.h>
  22 #include <linux/interrupt.h>
  23 #include <linux/timex.h>
  24
  25 #include <asm/irq.h>
  26 #include <asm/cpu.h>
  27 #include <asm/time.h>
  28
  29 #include <adm5120_info.h>
  30 #include <adm5120_irq.h>
  31
  32 void __init adm5120_time_init(void)
  33 {
  34         mips_hpt_frequency = adm5120_speed / 2;
  35 }
  36
  37 void __init plat_timer_setup(struct irqaction *irq)
  38 {
  39         clear_c0_status(ST0_BEV);
  40
  41         /* Install ISR for CPU Counter interrupt */
  42         setup_irq(ADM5120_IRQ_COUNTER, irq);
  43 }