linux-kernel - Re: [PATCH 1/9] ARM: OMAP3+: voltage: export functions to plat/voltage.h

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Message-ID: <CAORVsuWBHVhHnqBeKQ8hb2p+UsRP84O-Hq=bXYQv2wBJyfELGA@mail.gmail.com>
Date:	Wed, 18 Apr 2012 22:36:05 +0200
From:	Jean Pihet <jean.pihet@...oldbits.com>
To:	Kevin Hilman <khilman@...com>, KEERTHY J <j-keerthy@...com>
Cc:	linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	LKML <linux-kernel@...r.kernel.org>, Jean Pihet <j-pihet@...com>
Subject: Re: [PATCH 1/9] ARM: OMAP3+: voltage: export functions to plat/voltage.h

Hi Kevin,

Adding Keerthy J

On Wed, Apr 18, 2012 at 7:27 PM, Kevin Hilman <khilman@...com> wrote:
> Hi Jean,
>
> jean.pihet@...oldbits.com writes:
>
>> From: Jean Pihet <j-pihet@...com>
>>
>> Move some functions from mach-omap2/ dir to the plat/ dir.
>> The SmartReflex class driver is a user of the basic voltage domains
>> functions (enable, disable, reset).
>>
>> Signed-off-by: Jean Pihet <j-pihet@...com>
>> Cc: Kevin Hilman <khilman@...com>
>
> Rather than expose the VP functions directly, how about adding a new API
> at the voltdm layer to start/stop AVS.  Maybe something like:
>
>  voltdm_avs_start(struct voltagedomain *voltdm)
>  voltdm_avs_stop(struct voltagedomain *voltdm)
>
> These will internally just call VP enable/disable for now, but we may
> have more to add to these in the future to support other SR classes.
Agree.
That would be a first step in the definition of the API between SR and
VP. Implementing other SR classes might require more than that, this
is still under investigation for now.

>
> Kevin
>

Thanks for reviewing,
Jean
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