linux-kernel - Re: [PATCH v14 41/53] ASoC: Introduce SND kcontrols to select sound card and PCM device

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Date: Fri, 09 Feb 2024 11:38:32 +0100
From: Takashi Iwai <tiwai@...e.de>
To: Wesley Cheng <quic_wcheng@...cinc.com>
Cc: <srinivas.kandagatla@...aro.org>,
	<mathias.nyman@...el.com>,
	<perex@...ex.cz>,
	<conor+dt@...nel.org>,
	<corbet@....net>,
	<lgirdwood@...il.com>,
	<andersson@...nel.org>,
	<krzysztof.kozlowski+dt@...aro.org>,
	<gregkh@...uxfoundation.org>,
	<Thinh.Nguyen@...opsys.com>,
	<broonie@...nel.org>,
	<bgoswami@...cinc.com>,
	<tiwai@...e.com>,
	<robh+dt@...nel.org>,
	<konrad.dybcio@...aro.org>,
	<linux-kernel@...r.kernel.org>,
	<devicetree@...r.kernel.org>,
	<linux-sound@...r.kernel.org>,
	<linux-usb@...r.kernel.org>,
	<linux-arm-msm@...r.kernel.org>,
	<linux-doc@...r.kernel.org>,
	<alsa-devel@...a-project.org>
Subject: Re: [PATCH v14 41/53] ASoC: Introduce SND kcontrols to select sound card and PCM device

On Fri, 09 Feb 2024 00:13:54 +0100,
Wesley Cheng wrote:
> 
> Add SND kcontrol to SOC USB, which will allow for userpsace to determine
> which USB card number and PCM device to offload.  This allows for userspace
> to potentially tag an alternate path for a specific USB SND card and PCM
> device.  Previously, control was absent, and the offload path would be
> enabled on the last USB SND device which was connected.  This logic will
> continue to be applicable if no mixer input is received for specific device
> selection.
> 
> An example to configure the offload device using tinymix:
> tinymix -D 0 set 'SNDUSB OFFLD device select' 1 0

As I mentioned in another patch, the control element name should be
more understandable.  The same applied even for ASoC stuff.
The current name is way too cryptic.


thanks,

Takashi