Пример #1
0
static void bfin_timer_set_mode(enum clock_event_mode mode,
				struct clock_event_device *evt)
{
	switch (mode) {
	case CLOCK_EVT_MODE_PERIODIC: {
		unsigned long tcount = ((get_cclk() / (HZ * TIME_SCALE)) - 1);
		bfin_write_TCNTL(TMPWR);
		CSYNC();
		bfin_write_TSCALE(TIME_SCALE - 1);
		bfin_write_TPERIOD(tcount);
		bfin_write_TCOUNT(tcount);
		CSYNC();
		bfin_write_TCNTL(TMPWR | TMREN | TAUTORLD);
		break;
	}
	case CLOCK_EVT_MODE_ONESHOT:
		bfin_write_TCNTL(TMPWR);
		CSYNC();
		bfin_write_TSCALE(TIME_SCALE - 1);
		bfin_write_TPERIOD(0);
		bfin_write_TCOUNT(0);
		break;
	case CLOCK_EVT_MODE_UNUSED:
	case CLOCK_EVT_MODE_SHUTDOWN:
		bfin_write_TCNTL(0);
		CSYNC();
		break;
	case CLOCK_EVT_MODE_RESUME:
		break;
	}
}
Пример #2
0
Файл: time.c Проект: 274914765/C
static void
time_sched_init(irq_handler_t timer_routine)
{
    u32 tcount;

    /* power up the timer, but don't enable it just yet */
    bfin_write_TCNTL(1);
    CSYNC();

    /*
     * the TSCALE prescaler counter.
     */
    bfin_write_TSCALE((TIME_SCALE - 1));

    tcount = ((get_cclk() / (HZ * TIME_SCALE)) - 1);
    bfin_write_TPERIOD(tcount);
    bfin_write_TCOUNT(tcount);

    /* now enable the timer */
    CSYNC();

    bfin_write_TCNTL(7);

    bfin_timer_irq.handler = (irq_handler_t)timer_routine;
    /* call setup_irq instead of request_irq because request_irq calls
     * kmalloc which has not been initialized yet
     */
    setup_irq(IRQ_CORETMR, &bfin_timer_irq);
}
Пример #3
0
static void __init bfin_timer_init(void)
{
	/* power up the timer, but don't enable it just yet */
	bfin_write_TCNTL(TMPWR);
	CSYNC();

	/*
	 * the TSCALE prescaler counter.
	 */
	bfin_write_TSCALE(TIME_SCALE - 1);
	bfin_write_TPERIOD(0);
	bfin_write_TCOUNT(0);

	CSYNC();
}
Пример #4
0
void __init setup_core_timer(void)
{
	u32 tcount;

	/* power up the timer, but don't enable it just yet */
	bfin_write_TCNTL(1);
	CSYNC();

	/* the TSCALE prescaler counter */
	bfin_write_TSCALE(TIME_SCALE - 1);

	tcount = ((get_cclk() / (HZ * TIME_SCALE)) - 1);
	bfin_write_TPERIOD(tcount);
	bfin_write_TCOUNT(tcount);

	/* now enable the timer */
	CSYNC();

	bfin_write_TCNTL(7);
}