linux-kernel - Re: [PATCH] ASoC: max98390: Remove unnecessary amp on/off conrtol

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Date:   Wed, 31 Aug 2022 17:36:26 +0100
From:   Mark Brown <broonie@...nel.org>
To:     Steve Lee <steve.lee.analog@...il.com>
Cc:     lgirdwood@...il.com, perex@...ex.cz, tiwai@...e.com,
        linux-kernel@...r.kernel.org, alsa-devel@...a-project.org,
        krzk@...nel.org, ryans.lee@...log.com
Subject: Re: [PATCH] ASoC: max98390: Remove unnecessary amp on/off conrtol

On Fri, Aug 26, 2022 at 11:35:04AM +0900, Steve Lee wrote:

>  The Amp is already control in userspace before trigger calibrate function.
> Remove unnecessary control in calibrate function.

I can't see anything which ensures that this is the case?  Should there
be a check which returns an error if the output is not enabled, or
should the function check the current state and preserve it at the end?
I can see that this would fix problems with it being disabled when
callibrating.

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