projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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 | ||
| 1da177e4 LT |
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 | ||
| 33 | void __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 | ||
| 44 | void platform_timer_eoi(void) | |
| 45 | { | |
| 46 | *(volatile unsigned char *)_8TCSR1 &= ~(1 << CMFA); | |
| 47 | } | |
| 48 | ||
| 49 | void platform_gettod(int *year, int *mon, int *day, int *hour, | |
| 50 | int *min, int *sec) | |
| 51 | { | |
| 52 | /* FIXME! not RTC support */ | |
| 53 | *year = *mon = *day = *hour = *min = *sec = 0; | |
| 54 | } |