Subject: Re: [PATCH 6/8] [POWERPC] sysdev,qe_lib: implement FSL GTM support

From: Anton Vorontsov <[email-masked]>
Date: Thu, 17 Apr 2008 01:00:42 +0400

On Wed, Apr 16, 2008 at 01:44:42PM -0500, Scott Wood wrote:
> On Wed, Apr 16, 2008 at 10:39:04PM +0400, Anton Vorontsov wrote:
> > +/**
> > + * gtm_reset_utimer16 - reset 16 bits timer
> > + * @tmr:	pointer to the gtm_timer structure obtained from gtm_get_timer
> > + * @usec:	timer interval in microseconds
> > + * @free_run:	free run flag
> > + *
> > + * This function (re)sets GTM timer so it counts up to the interval value and
> > + * fires the interrupt when the value is reached. If free_run flag was set,
> > + * timer will also reset itself upon reference value, otherwise it continues to
> > + * increment.
> > + */
> > +int gtm_reset_utimer16(struct gtm_timer *tmr, u16 usec, bool free_run)
> 
> A maximal timeout of ~65 ms is a little low...  For use as a wakeup from
> sleep mode, I'd like to be able to request timeouts as large as the
> hardware allows.

That is about precision. You just need to implement gtm_reset_stimer()
is you want precision with a seconds, this will run a timer at 1 Hz.

-- 
Anton Vorontsov
email: [email-masked]
irc://irc.freenode.net/bd2