1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
/*
* linux/arch/h8300/platform/h8300h/h8max/timer.c
*
* Yoshinori Sato <ysato@users.sourcefoge.jp>
*
* Platform depend Timer Handler
*
*/
#include <linux/config.h>
#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/regs306x.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 *))
{
/* setup 8bit timer ch2 */
ctrl_outb(H8300_TIMER_FREQ / HZ, TCORA2); /* set interval */
ctrl_outb(0x00, _8TCSR2); /* no output */
request_irq(40, timer_int, 0, "timer", 0);
ctrl_outb(CMIEA|CCLR_CMA|CLK_DIV8192, _8TCR2); /* start count */
}
void platform_timer_eoi(void)
{
*(volatile unsigned char *)_8TCSR2 &= ~(1 << CMFA);
}
void platform_gettod(int *year, int *mon, int *day, int *hour,
int *min, int *sec)
{
*year = *mon = *day = *hour = *min = *sec = 0;
}
|
