diff options
Diffstat (limited to 'arch/h8300/platform/h8300h/aki3068net/timer.c')
-rw-r--r-- | arch/h8300/platform/h8300h/aki3068net/timer.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/arch/h8300/platform/h8300h/aki3068net/timer.c b/arch/h8300/platform/h8300h/aki3068net/timer.c new file mode 100644 index 00000000000..086efb1fd28 --- /dev/null +++ b/arch/h8300/platform/h8300h/aki3068net/timer.c @@ -0,0 +1,52 @@ +/* + * linux/arch/h8300/platform/h8300h/aki3068net/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; +} |