/*
   *  Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
   *  JZ4740 platform timer support
   *
   *  This program is free software; you can redistribute it and/or modify it
   *  under  the terms of the GNU General	 Public License as published by the
   *  Free Software Foundation;  either version 2 of the License, or (at your
   *  option) any later version.
   *
   *  You should have received a copy of the GNU General Public License along
   *  with this program; if not, write to the Free Software Foundation, Inc.,
   *  675 Mass Ave, Cambridge, MA 02139, USA.
   *
   */
  
  #include <linux/io.h>
  #include <linux/kernel.h>
  #include <linux/module.h>
  
  #include <asm/mach-jz4740/base.h>
  #include <asm/mach-jz4740/timer.h>
  
  void __iomem *jz4740_timer_base;
  EXPORT_SYMBOL_GPL(jz4740_timer_base);
  
  void jz4740_timer_enable_watchdog(void)
  {
  	writel(BIT(16), jz4740_timer_base + JZ_REG_TIMER_STOP_CLEAR);
  }
  EXPORT_SYMBOL_GPL(jz4740_timer_enable_watchdog);
  
  void jz4740_timer_disable_watchdog(void)
  {
  	writel(BIT(16), jz4740_timer_base + JZ_REG_TIMER_STOP_SET);
  }
  EXPORT_SYMBOL_GPL(jz4740_timer_disable_watchdog);
  
  void __init jz4740_timer_init(void)
  {
  	jz4740_timer_base = ioremap(JZ4740_TCU_BASE_ADDR, 0x100);
  
  	if (!jz4740_timer_base)
  		panic("Failed to ioremap timer registers");
  
  	/* Disable all timer clocks except for those used as system timers */
  	writel(0x000100fc, jz4740_timer_base + JZ_REG_TIMER_STOP_SET);
  
  	/* Timer irqs are unmasked by default, mask them */
  	writel(0x00ff00ff, jz4740_timer_base + JZ_REG_TIMER_MASK_SET);
  }