linux-kernel - Re: [PATCH v2 8/8] ASoC: qcom: apq8096: add kcontrols to set PCM rate

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Message-ID: <20200211114256.GC4543@sirena.org.uk>
Date:   Tue, 11 Feb 2020 11:42:56 +0000
From:   Mark Brown <broonie@...nel.org>
To:     Adam Serbinski <adam@...binski.com>
Cc:     Srini Kandagatla <srinivas.kandagatla@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Patrick Lai <plai@...eaurora.org>,
        Banajit Goswami <bgoswami@...eaurora.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, alsa-devel@...a-project.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 8/8] ASoC: qcom: apq8096: add kcontrols to set PCM rate

On Mon, Feb 10, 2020 at 04:13:52PM -0500, Adam Serbinski wrote:

> I am not aware of how this could be done for bluetooth, since the value
> still has to originate from userspace. The driver you referred to supports
> only a single sample rate, whereas for bluetooth, 2 sample rates are
> required, and nothing in the kernel is aware of the appropriate rate, at
> least in the case of the qca6174a I'm working with right now, or for that
> matter, TI Wilink 8, which I've also worked with.

There's generic support in the CODEC<->CODEC link code for setting the
DAI configuration from userspace.

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