55 lines
1.3 KiB
C
55 lines
1.3 KiB
C
/*
|
|
* linux/arch/h8300/platform/h8s/edosk2674/timer.c
|
|
*
|
|
* Yoshinori Sato <ysato@users.sourceforge.jp>
|
|
*
|
|
* Platform depend Timer Handler
|
|
*
|
|
*/
|
|
|
|
#include <linux/errno.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/init.h>
|
|
#include <linux/timex.h>
|
|
|
|
#include <asm/segment.h>
|
|
#include <asm/io.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/regs267x.h>
|
|
|
|
#define CMFA 6
|
|
|
|
#define CMIEA 0x40
|
|
#define CCLR_CMA 0x08
|
|
#define CLK_DIV8192 0x03
|
|
|
|
#define H8300_TIMER_FREQ CONFIG_CPU_CLOCK*1000/8192 /* Timer input freq. */
|
|
|
|
void __init platform_timer_setup(irqreturn_t (*timer_int)(int, void *, struct pt_regs *))
|
|
{
|
|
/* 8bit timer module enabled */
|
|
ctrl_outb(ctrl_inb(MSTPCRL) & ~0x01, MSTPCRL);
|
|
/* setup 8bit timer ch1 */
|
|
ctrl_outb(H8300_TIMER_FREQ / HZ, _8TCORA1); /* set interval */
|
|
ctrl_outb(0x00, _8TCSR1); /* no output */
|
|
request_irq(76, timer_int, 0, "timer" ,0);
|
|
ctrl_outb(CMIEA|CCLR_CMA|CLK_DIV8192, _8TCR1); /* start count */
|
|
}
|
|
|
|
void platform_timer_eoi(void)
|
|
{
|
|
*(volatile unsigned char *)_8TCSR1 &= ~(1 << CMFA);
|
|
}
|
|
|
|
void platform_gettod(int *year, int *mon, int *day, int *hour,
|
|
int *min, int *sec)
|
|
{
|
|
/* FIXME! not RTC support */
|
|
*year = *mon = *day = *hour = *min = *sec = 0;
|
|
}
|