platforms/52xx/mpc52xx_gpt.c

385 static int mpc52xx_gpt_do_start(struct mpc52xx_gpt_priv *gpt, u64 period,
401 	/* Determine the number of clocks in the requested period.  64 bit
405 	clocks = period * (u64)gpt->ipb_freq;
413 	 * 'clocks' is the number of clock ticks in the period.  The timer
450  * @period: period of timer in ns; max. ~130s @ 33MHz IPB clock
455 int mpc52xx_gpt_start_timer(struct mpc52xx_gpt_priv *gpt, u64 period,
458 	return mpc52xx_gpt_do_start(gpt, period, continuous, 0);
486  * mpc52xx_gpt_timer_period - Read the timer period
489  * Returns the timer period in ns
493 	u64 period;
498 	period = in_be32(&gpt->regs->count);
501 	prescale = period >> 16;
502 	period &= 0xffff;
505 	period = period * prescale * 1000000000ULL;
506 	do_div(period, gpt->ipb_freq);
507 	return period;
676 				 const u32 *period)
684 	if (!period || *period == 0)
687 	real_timeout = (u64) *period * 1000000000ULL;
691 		dev_info(gpt->dev, "watchdog set to %us timeout\n", *period);
703 					const u32 *period)