From: Wesley Cheng <quic_wcheng@quicinc.com>
To: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>,
<srinivas.kandagatla@linaro.org>, <mathias.nyman@intel.com>,
<perex@perex.cz>, <conor+dt@kernel.org>, <corbet@lwn.net>,
<lgirdwood@gmail.com>, <andersson@kernel.org>,
<krzk+dt@kernel.org>, <gregkh@linuxfoundation.org>,
<Thinh.Nguyen@synopsys.com>, <broonie@kernel.org>,
<bgoswami@quicinc.com>, <tiwai@suse.com>, <bagasdotme@gmail.com>,
<robh@kernel.org>, <konrad.dybcio@linaro.org>
Cc: <linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-sound@vger.kernel.org>, <linux-usb@vger.kernel.org>,
<linux-arm-msm@vger.kernel.org>, <linux-doc@vger.kernel.org>,
<alsa-devel@alsa-project.org>
Subject: Re: [PATCH v21 27/39] ASoC: Introduce SND kcontrols to select sound card and PCM device
Date: Wed, 8 May 2024 17:10:27 -0700 [thread overview]
Message-ID: <3390ef12-67dd-9474-21fb-b8df35fff546@quicinc.com> (raw)
In-Reply-To: <54b79b7b-49e6-418e-9a6b-11bcbada8398@linux.intel.com>
Hi Pierre,
On 5/7/2024 2:26 PM, Pierre-Louis Bossart wrote:
>
>
> On 5/7/24 14:51, 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 'USB Offload Playback Route Select' 1 0
>>
>> The above command will configure the offload path to utilize card#1 and PCM
>> stream#0.
>
> I don't know how this is usable in practice. Using card indices is
> really hard to do, it depends on the order in which devices are
> plugged-in...
How are the existing mechanisms handling USB audio devices, or what is
the identifier being used?
Thanks
Wesley Cheng
next prev parent reply other threads:[~2024-05-09 0:10 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-07 19:50 [PATCH v21 00/39] Introduce QC USB SND audio offloading support Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 01/39] xhci: add helper to stop endpoint and wait for completion Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 02/39] usb: host: xhci: Repurpose event handler for skipping interrupter events Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 03/39] xhci: sideband: add initial api to register a sideband entity Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 04/39] usb: xhci: Allow for secondary interrupter to set IMOD Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 05/39] usb: host: xhci-mem: Cleanup pending secondary event ring events Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 06/39] usb: host: xhci-mem: Allow for interrupter clients to choose specific index Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 07/39] ASoC: Add SOC USB APIs for adding an USB backend Wesley Cheng
2024-05-07 20:26 ` Pierre-Louis Bossart
2024-05-08 20:16 ` Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 08/39] ASoC: dt-bindings: qcom,q6dsp-lpass-ports: Add USB_RX port Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 09/39] ASoC: qcom: qdsp6: Introduce USB AFE port to q6dsp Wesley Cheng
2024-05-07 20:37 ` Pierre-Louis Bossart
2024-05-08 23:34 ` Wesley Cheng
2024-05-09 12:54 ` Pierre-Louis Bossart
2024-05-09 21:34 ` Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 10/39] ASoC: qdsp6: q6afe: Increase APR timeout Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 11/39] ASoC: qcom: qdsp6: Add USB backend ASoC driver for Q6 Wesley Cheng
2024-05-07 20:39 ` Pierre-Louis Bossart
2024-05-07 19:50 ` [PATCH v21 12/39] ALSA: usb-audio: Introduce USB SND platform op callbacks Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 13/39] ALSA: usb-audio: Export USB SND APIs for modules Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 14/39] ALSA: usb-audio: Save UAC sample size information Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 15/39] usb: dwc3: Specify maximum number of XHCI interrupters Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 16/39] usb: host: xhci-plat: Set XHCI max interrupters if property is present Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 17/39] ALSA: usb-audio: qcom: Add USB QMI definitions Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 18/39] ALSA: usb-audio: qcom: Introduce QC USB SND offloading support Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 19/39] ALSA: usb-audio: Check for support for requested audio format Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 20/39] ASoC: usb: Add PCM format check API for USB backend Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 21/39] ASoC: qcom: qdsp6: Ensure PCM format is supported by USB audio device Wesley Cheng
2024-05-07 19:50 ` [PATCH v21 22/39] ALSA: usb-audio: Prevent starting of audio stream if in use Wesley Cheng
2024-05-07 21:20 ` Pierre-Louis Bossart
2024-05-08 23:40 ` Wesley Cheng
2024-05-09 13:01 ` Pierre-Louis Bossart
2024-05-09 21:38 ` Wesley Cheng
2024-05-07 19:51 ` [PATCH v21 23/39] ALSA: usb-audio: Do not allow USB offload path if PCM device is " Wesley Cheng
2024-05-07 19:51 ` [PATCH v21 24/39] ASoC: dt-bindings: Update example for enabling USB offload on SM8250 Wesley Cheng
2024-05-07 19:51 ` [PATCH v21 25/39] ALSA: usb-audio: qcom: Populate PCM and USB chip information Wesley Cheng
2024-05-07 19:51 ` [PATCH v21 26/39] ASoC: qcom: qdsp6: Add support to track available USB PCM devices Wesley Cheng
2024-05-07 21:23 ` Pierre-Louis Bossart
2024-05-08 23:57 ` Wesley Cheng
2024-05-09 13:02 ` Pierre-Louis Bossart
2024-05-09 21:49 ` Wesley Cheng
2024-05-07 19:51 ` [PATCH v21 27/39] ASoC: Introduce SND kcontrols to select sound card and PCM device Wesley Cheng
2024-05-07 21:26 ` Pierre-Louis Bossart
2024-05-09 0:10 ` Wesley Cheng [this message]
2024-05-09 13:07 ` Pierre-Louis Bossart
2024-05-09 22:32 ` Wesley Cheng
2024-05-07 19:51 ` [PATCH v21 28/39] ASoC: qcom: qdsp6: Add SOC USB offload select get/put callbacks Wesley Cheng
2024-05-07 19:51 ` [PATCH v21 29/39] ASoC: Introduce SND kcontrols to track USB offloading state Wesley Cheng
2024-05-07 19:51 ` [PATCH v21 30/39] ASoC: qcom: qdsp6: Add PCM ops to track current state Wesley Cheng
2024-05-07 19:51 ` [PATCH v21 31/39] ASoC: usb: Create SOC USB SND jack kcontrol Wesley Cheng
2024-05-07 19:51 ` [PATCH v21 32/39] ASoC: qcom: qdsp6: Add headphone jack for offload connection status Wesley Cheng
2024-05-07 19:51 ` [PATCH v21 33/39] ASoC: usb: Fetch ASoC sound card information Wesley Cheng
2024-05-07 21:33 ` Pierre-Louis Bossart
2024-05-09 0:13 ` Wesley Cheng
2024-05-07 19:51 ` [PATCH v21 34/39] ALSA: usb-audio: Add USB offloading capable kcontrol Wesley Cheng
2024-05-07 21:37 ` Pierre-Louis Bossart
2024-05-08 19:41 ` Wesley Cheng
2024-05-09 0:42 ` Wesley Cheng
2024-05-09 13:11 ` Pierre-Louis Bossart
2024-05-09 22:05 ` Wesley Cheng
2024-05-07 19:51 ` [PATCH v21 35/39] ALSA: usb-audio: Allow for rediscovery of connected USB SND devices Wesley Cheng
2024-05-07 19:51 ` [PATCH v21 36/39] ALSA: usb-audio: qcom: Use card and PCM index from QMI request Wesley Cheng
2024-05-07 19:51 ` [PATCH v21 37/39] ASoC: usb: Rediscover USB SND devices on USB port add Wesley Cheng
2024-05-07 19:51 ` [PATCH v21 38/39] ASoC: qcom: Populate SoC components string Wesley Cheng
2024-05-07 21:40 ` Pierre-Louis Bossart
2024-05-08 20:06 ` Wesley Cheng
2024-05-09 13:17 ` Pierre-Louis Bossart
2024-05-09 22:09 ` Wesley Cheng
2024-05-07 19:51 ` [PATCH v21 39/39] ASoC: doc: Add documentation for SOC USB Wesley Cheng
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