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

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Message-ID: <b386237a1c21a417afb25f79a8b3d4ce@serbinski.com>
Date:   Tue, 11 Feb 2020 08:52:23 -0500
From:   Adam Serbinski <adam@...binski.com>
To:     Mark Brown <broonie@...nel.org>
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 2020-02-11 06:42, Mark Brown wrote:
> 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.

Ok. Its going to take some time to get my head around that, so for the 
time being I'm going to drop this feature and get the rest fixed for 
inclusion.

Thanks.