linux-kernel - Re: [PATCH v3 1/5] ASoC: codecs: wsa883x: fix PA volume control

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Message-ID: <a9e1f3b8-9597-454e-b68d-4014e923ee61@sirena.org.uk>
Date: Thu, 18 Jan 2024 17:24:16 +0000
From: Mark Brown <broonie@...nel.org>
To: Johan Hovold <johan+linaro@...nel.org>
Cc: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
	Banajit Goswami <bgoswami@...cinc.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
	alsa-devel@...a-project.org, linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH v3 1/5] ASoC: codecs: wsa883x: fix PA volume control

On Thu, Jan 18, 2024 at 05:58:07PM +0100, Johan Hovold wrote:
> The PA gain can be set in steps of 1.5 dB from -3 dB to 18 dB, that is,
> in fifteen levels.
> 
> Fix the range of the PA volume control to avoid having the first
> sixteen levels all map to -3 dB.
> 
> Note that level 0 (-3 dB) does not mute the PA so the mute flag should
> also not be set.
> 
> Fixes: cdb09e623143 ("ASoC: codecs: wsa883x: add control, dapm widgets and map")
> Cc: stable@...r.kernel.org      # 6.0

This will mean that any configuration saved with alsactl store will
change effect, it might be better to just fix the TLV description and
live with the unfortunate UX...

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