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  • only in /netgear-WNDR4500v2-V1.0.0.60_1.0.38/src/linux/linux-2.6/arch/h8300/platform/h8s/edosk2674/
1/*
2 *  linux/arch/h8300/platform/h8s/edosk2674/timer.c
3 *
4 *  Yoshinori Sato <ysato@users.sourceforge.jp>
5 *
6 *  Platform depend Timer Handler
7 *
8 */
9
10#include <linux/errno.h>
11#include <linux/sched.h>
12#include <linux/kernel.h>
13#include <linux/param.h>
14#include <linux/string.h>
15#include <linux/mm.h>
16#include <linux/interrupt.h>
17#include <linux/init.h>
18#include <linux/timex.h>
19
20#include <asm/segment.h>
21#include <asm/io.h>
22#include <asm/irq.h>
23#include <asm/regs267x.h>
24
25#define CMFA 6
26
27#define CMIEA 0x40
28#define CCLR_CMA 0x08
29#define CLK_DIV8192 0x03
30
31#define H8300_TIMER_FREQ CONFIG_CPU_CLOCK*1000/8192 /* Timer input freq. */
32
33void __init platform_timer_setup(irqreturn_t (*timer_int)(int, void *, struct pt_regs *))
34{
35	/* 8bit timer module enabled */
36	ctrl_outb(ctrl_inb(MSTPCRL) & ~0x01, MSTPCRL);
37	/* setup 8bit timer ch1 */
38	ctrl_outb(H8300_TIMER_FREQ / HZ, _8TCORA1);      /* set interval */
39	ctrl_outb(0x00, _8TCSR1);                        /* no output */
40	request_irq(76, timer_int, 0, "timer" ,0);
41	ctrl_outb(CMIEA|CCLR_CMA|CLK_DIV8192, _8TCR1);   /* start count */
42}
43
44void platform_timer_eoi(void)
45{
46	*(volatile unsigned char *)_8TCSR1 &= ~(1 << CMFA);
47}
48
49void platform_gettod(int *year, int *mon, int *day, int *hour,
50		 int *min, int *sec)
51{
52	*year = *mon = *day = *hour = *min = *sec = 0;
53}
54