* rfc - use clk api to handle timers?
@ 2006-04-04 13:30 Woodruff, Richard
2006-04-07 13:24 ` tony
0 siblings, 1 reply; 2+ messages in thread
From: Woodruff, Richard @ 2006-04-04 13:30 UTC (permalink / raw)
To: linux-omap-open-source
I was just wondering if it might be useful to use the clk api to control
gp-timers?
enable/disable map well.
set_parent maps to sys_clk, dpll clk, alt_clk.
get_rate/set_rate/round_rate work well. There is a well known
divider set to use round_rate against.
One thing which might be nice is some kind of get_exclusive
which causes further gets from others to fail if a resource is already
owned. Normal usecount's would handle a shared resource.
This doesn't cover interrupt generation and others those could be added
or handled separately.
Thoughts?
Regards,
Richard W.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: rfc - use clk api to handle timers?
2006-04-04 13:30 rfc - use clk api to handle timers? Woodruff, Richard
@ 2006-04-07 13:24 ` tony
0 siblings, 0 replies; 2+ messages in thread
From: tony @ 2006-04-07 13:24 UTC (permalink / raw)
To: Woodruff, Richard; +Cc: linux-omap-open-source
* Woodruff, Richard <r-woodruff2@ti.com> [060404 06:32]:
> I was just wondering if it might be useful to use the clk api to control
> gp-timers?
>
> enable/disable map well.
> set_parent maps to sys_clk, dpll clk, alt_clk.
> get_rate/set_rate/round_rate work well. There is a well known
> divider set to use round_rate against.
>
> One thing which might be nice is some kind of get_exclusive
> which causes further gets from others to fail if a resource is already
> owned. Normal usecount's would handle a shared resource.
>
> This doesn't cover interrupt generation and others those could be added
> or handled separately.
>
> Thoughts?
We should use gptimers via hrtimers. Using the clk api for internal rate
control may work as long as we use rates.
Tony
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