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/*
* linux/arch/rlx/rlxocp/time.c
*
* Copyright (C) 1999 Harald Koerfgen
* Copyright (C) 2000 Pavel Machek (pavel@suse.cz)
* Copyright (C) 2001 Steven J. Hill (sjhill@realitydiluted.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Time handling functinos for Philips Nino.
*/
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/sched.h>
#include <linux/kernel.h>
#include <linux/param.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/timex.h>
#include <linux/delay.h>
#include <asm/time.h>
#include <asm/rlxbsp.h>
#include "bspchip.h"
#ifdef CONFIG_RTL_TIMER_ADJUSTMENT
#include <rtl_types.h>
#include <rtl865xc_asicregs.h>
void rtl865x_setupTimer1(void)
{
WRITE_MEM32( TCCNR, READ_MEM32(TCCNR) & ~TC1EN );/* Disable timer1 */
WRITE_MEM32( TC1DATA, 0xffffff00);
WRITE_MEM32( TCCNR, ( READ_MEM32(TCCNR) | TC1EN ) | TC1MODE_TIMER );/* Enable timer1 - timer mode */
WRITE_MEM32( TCIR, READ_MEM32(TCIR) & ~TC1IE ); /* Disable timer1 interrupt */
}
#endif
void inline bsp_timer_ack(void)
{
REG32(BSP_TCIR) |= BSP_TC0IP;
}
void __init bsp_timer_init(void)
{
unsigned int sys_clock_rate;
sys_clock_rate = BSP_SYS_CLK_RATE;
/* Clear Timer IP status */
if (REG32(BSP_TCIR) & BSP_TC0IP)
REG32(BSP_TCIR) |= BSP_TC0IP;
/* disable timer */
REG32(BSP_TCCNR) = 0; /* disable timer before setting CDBR */
/* initialize timer registers */
REG32(BSP_CDBR)=(BSP_DIVISOR) << BSP_DIVF_OFFSET;
REG32(BSP_TC0DATA) = (((sys_clock_rate/BSP_DIVISOR)/HZ)) << BSP_TCD_OFFSET;
// extend timer base to 4 times
//REG32(BSP_CDBR)=(BSP_DIVISOR*4) << BSP_DIVF_OFFSET;
//REG32(BSP_TC0DATA) = (((sys_clock_rate/(BSP_DIVISOR*4))/HZ)) << BSP_TCD_OFFSET;
#ifdef CONFIG_RTL_TIMER_ADJUSTMENT
rtl865x_setupTimer1();
#endif
#if defined(CONFIG_RTK_WTDOG)
REG32(BSP_WDTCNR) = 0x00600000;
#endif
/* hook up timer interrupt handler */
rlx_clockevent_init(BSP_TC0_IRQ);
/* enable timer */
REG32(BSP_TCCNR) = BSP_TC0EN | BSP_TC0MODE_TIMER;
REG32(BSP_TCIR) = BSP_TC0IE;
}
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