linux-kernel - Re: [RFC PATCH v3 0/6] ASoC: fsl: add memory to memory function for ASRC

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Message-ID: <24806109-16a5-4180-8b5d-a36b0a549a7b@perex.cz>
Date: Wed, 2 Oct 2024 12:10:07 +0200
From: Jaroslav Kysela <perex@...ex.cz>
To: Shengjiu Wang <shengjiu.wang@....com>, vkoul@...nel.org, tiwai@...e.com,
 alsa-devel@...a-project.org, linux-sound@...r.kernel.org,
 linux-kernel@...r.kernel.org, shengjiu.wang@...il.com, Xiubo.Lee@...il.com,
 festevam@...il.com, nicoleotsuka@...il.com, lgirdwood@...il.com,
 broonie@...nel.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [RFC PATCH v3 0/6] ASoC: fsl: add memory to memory function for
 ASRC

On 06. 09. 24 11:43, Shengjiu Wang wrote:
> This function is base on the accelerator implementation
> for compress API:
> https://patchwork.kernel.org/project/alsa-devel/patch/20240731083843.59911-1-perex@perex.cz/
> 
> Audio signal processing also has the requirement for memory to
> memory similar as Video.
> 
> This asrc memory to memory (memory ->asrc->memory) case is a non
> real time use case.
> 
> User fills the input buffer to the asrc module, after conversion, then asrc
> sends back the output buffer to user. So it is not a traditional ALSA playback
> and capture case.
> 
> Because we had implemented the "memory -> asrc ->i2s device-> codec"
> use case in ALSA.  Now the "memory->asrc->memory" needs
> to reuse the code in asrc driver, so the patch 1 and patch 2 is for refining
> the code to make it can be shared by the "memory->asrc->memory"
> driver.
> 
> Other change is to add memory to memory support for two kinds of i.MX ASRC
> modules.

Acked-by: Jaroslav Kysela <perex@...ex.cz>

-- 
Jaroslav Kysela <perex@...ex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.