From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EA690C4332F for ; Mon, 30 Oct 2023 01:57:33 +0000 (UTC) Authentication-Results: lists.ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20230601 header.b=HM1YQFjc; dkim-atps=neutral Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4SJbxl5kCjz3cSM for ; Mon, 30 Oct 2023 12:57:31 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20230601 header.b=HM1YQFjc; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gmail.com (client-ip=2607:f8b0:4864:20::1033; helo=mail-pj1-x1033.google.com; envelope-from=shengjiu.wang@gmail.com; receiver=lists.ozlabs.org) Received: from mail-pj1-x1033.google.com (mail-pj1-x1033.google.com [IPv6:2607:f8b0:4864:20::1033]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4SJbwm618kz2xpm for ; Mon, 30 Oct 2023 12:56:38 +1100 (AEDT) Received: by mail-pj1-x1033.google.com with SMTP id 98e67ed59e1d1-28010522882so1552320a91.0 for ; Sun, 29 Oct 2023 18:56:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1698630994; x=1699235794; darn=lists.ozlabs.org; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=sXRLwnyvcfy6jE/MUWoW/Yby9B0gy2TfIvcPthNvb0k=; b=HM1YQFjcRORI+OLJt1lAbZVALKyPiVTiy0ROwcRt1Wm6TguFtLe1VT0UNZNnLLIkkd c4Pv75SvuglgAHvRVIc4Ib074RrYft+0JCLrGt0vAYn2MjWRK136rop2wTrc1SiHB4Yt IJETA5vEtJBqi6LwftXDNOL93bVApxKo7b1P9XkXXXDIvAQP5ktUEgkUwP5fe4gz9yOh iIAzIzvZ7dwcGUejfm7tM054Jba6EIHScF3DWOMZjG7ZxjQ2wwIAbnx5Xv0sIOjcXaRm UxmaZjMThP52SLtwpzx15nz/Gd3m9oY2URDFADylLm8UvBcBm+3+Hhfqrb7QoepkLxyG RtdA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1698630994; x=1699235794; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=sXRLwnyvcfy6jE/MUWoW/Yby9B0gy2TfIvcPthNvb0k=; b=Q0ji98LAp6Kjr1wJ2WJ0MTojpmdgaTP5CyPt84WKB0wToLBcRQt91Z48PXdcug77Nw YTZ0D7B4M3sQR4iXkEw06v4g0vQWpYqFSFTKnUBmj/Z1zMTZ58/BFmMbUw8Lh0koAjKq g7+LeeltHLc7wWv7qqXERhJaboHN3nAPYM4j7CrXiT8dGD57P+PN+zYDAKUHvQpmd6OL z3PBxPvCgiR8LIqH6klZ7F2W7FG8KVBUwm+NjY/5uzzx1DwtjaD9c4PZIoMWxX/WDrhC +xWHtzqDqAjof+VQP6nSyljeSMlc30+YkvRdychk2u5AjGzNLFkKGcYJal+i9qIm7Prf 8uYw== X-Gm-Message-State: AOJu0YyVJhhP2qE9hMoivjVLeFB/MarAJk2TMHzdPF8V6+kQ35DsBj0I 66iVdtIBDNmT1cWO3/zdhSGIWbWvLC1cLXJFcWM= X-Google-Smtp-Source: AGHT+IGAB1+4aLMMfdrAGAJeVPLx3vXyPUzK5aU43XjGbCGprf4okqXxvQKJ4QuTuO9/Vq869iPZgyjlym6LTFzzngQ= X-Received: by 2002:a17:90a:357:b0:27d:5964:4eec with SMTP id 23-20020a17090a035700b0027d59644eecmr5885791pjf.1.1698630993867; Sun, 29 Oct 2023 18:56:33 -0700 (PDT) MIME-Version: 1.0 References: <1698402948-10618-1-git-send-email-shengjiu.wang@nxp.com> In-Reply-To: From: Shengjiu Wang Date: Mon, 30 Oct 2023 09:56:22 +0800 Message-ID: Subject: Re: [RFC PATCH v8 00/13] Add audio support in v4l2 framework To: Hans Verkuil Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: alsa-devel@alsa-project.org, lgirdwood@gmail.com, Xiubo.Lee@gmail.com, linux-kernel@vger.kernel.org, Shengjiu Wang , tiwai@suse.com, linux-media@vger.kernel.org, tfiga@chromium.org, nicoleotsuka@gmail.com, linuxppc-dev@lists.ozlabs.org, broonie@kernel.org, sakari.ailus@iki.fi, perex@perex.cz, mchehab@kernel.org, festevam@gmail.com, m.szyprowski@samsung.com Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Fri, Oct 27, 2023 at 7:18=E2=80=AFPM Hans Verkuil w= rote: > > Hi Shengjiu, > > Is there a reason why this series is still marked RFC? > > Just wondering about that. In the very beginning I started this series with RFC, So I still use RFC now... Best regards Wang shengjiu > > Regards, > > Hans > > On 27/10/2023 12:35, Shengjiu Wang wrote: > > 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 p= layback > > and capture case. > > > > It is a specific use case, there is no reference in current kernel. > > v4l2 memory to memory is the closed implementation, v4l2 current > > support video, image, radio, tuner, touch devices, so it is not > > complicated to add support for this specific audio 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 first 3 patches is for refinin= g > > the code to make it can be shared by the "memory->asrc->memory" > > driver. > > > > The main change is in the v4l2 side, A /dev/vl4-audioX will be created, > > user applications only use the ioctl of v4l2 framework. > > > > Other change is to add memory to memory support for two kinds of i.MX A= SRC > > module. > > > > changes in v8: > > - refine V4L2_CAP_AUDIO_M2M to be 0x00000008 > > - update doc for FIXED_POINT > > - address comments for imx-asrc > > > > changes in v7: > > - add acked-by from Mark > > - separate commit for fixed point, m2m audio class, audio rate controls > > - use INTEGER_MENU for rate, FIXED_POINT for rate offset > > - remove used fmts > > - address other comments for Hans > > > > changes in v6: > > - use m2m_prepare/m2m_unprepare/m2m_start/m2m_stop to replace > > m2m_start_part_one/m2m_stop_part_one, m2m_start_part_two/m2m_stop_par= t_two. > > - change V4L2_CTRL_TYPE_ASRC_RATE to V4L2_CTRL_TYPE_FIXED_POINT > > - fix warning by kernel test rebot > > - remove some unused format V4L2_AUDIO_FMT_XX > > - Get SNDRV_PCM_FORMAT from V4L2_AUDIO_FMT in driver. > > - rename audm2m to viaudm2m. > > > > changes in v5: > > - remove V4L2_AUDIO_FMT_LPCM > > - define audio pixel format like V4L2_AUDIO_FMT_S8... > > - remove rate and format in struct v4l2_audio_format. > > - Add V4L2_CID_ASRC_SOURCE_RATE and V4L2_CID_ASRC_DEST_RATE controls > > - updata document accordingly. > > > > changes in v4: > > - update document style > > - separate V4L2_AUDIO_FMT_LPCM and V4L2_CAP_AUDIO_M2M in separate commi= t > > > > changes in v3: > > - Modify documents for adding audio m2m support > > - Add audio virtual m2m driver > > - Defined V4L2_AUDIO_FMT_LPCM format type for audio. > > - Defined V4L2_CAP_AUDIO_M2M capability type for audio m2m case. > > - with modification in v4l-utils, pass v4l2-compliance test. > > > > changes in v2: > > - decouple the implementation in v4l2 and ALSA > > - implement the memory to memory driver as a platfrom driver > > and move it to driver/media > > - move fsl_asrc_common.h to include/sound folder > > > > Shengjiu Wang (13): > > ASoC: fsl_asrc: define functions for memory to memory usage > > ASoC: fsl_easrc: define functions for memory to memory usage > > ASoC: fsl_asrc: move fsl_asrc_common.h to include/sound > > ASoC: fsl_asrc: register m2m platform device > > ASoC: fsl_easrc: register m2m platform device > > media: uapi: Add V4L2_CAP_AUDIO_M2M capability flag > > media: v4l2: Add audio capture and output support > > media: uapi: Define audio sample format fourcc type > > media: uapi: Add V4L2_CTRL_CLASS_M2M_AUDIO > > media: uapi: Add V4L2_CTRL_TYPE_FIXED_POINT > > media: uapi: Add audio rate controls support > > media: imx-asrc: Add memory to memory driver > > media: vim2m_audio: add virtual driver for audio memory to memory > > > > .../userspace-api/media/v4l/buffer.rst | 6 + > > .../userspace-api/media/v4l/common.rst | 1 + > > .../media/v4l/dev-audio-mem2mem.rst | 71 + > > .../userspace-api/media/v4l/devices.rst | 1 + > > .../media/v4l/ext-ctrls-audio-m2m.rst | 41 + > > .../userspace-api/media/v4l/pixfmt-audio.rst | 87 ++ > > .../userspace-api/media/v4l/pixfmt.rst | 1 + > > .../media/v4l/vidioc-enum-fmt.rst | 2 + > > .../media/v4l/vidioc-g-ext-ctrls.rst | 17 +- > > .../userspace-api/media/v4l/vidioc-g-fmt.rst | 4 + > > .../media/v4l/vidioc-querycap.rst | 3 + > > .../media/v4l/vidioc-queryctrl.rst | 9 +- > > .../media/videodev2.h.rst.exceptions | 4 + > > .../media/common/videobuf2/videobuf2-v4l2.c | 4 + > > drivers/media/platform/nxp/Kconfig | 12 + > > drivers/media/platform/nxp/Makefile | 1 + > > drivers/media/platform/nxp/imx-asrc.c | 1186 +++++++++++++++++ > > drivers/media/test-drivers/Kconfig | 9 + > > drivers/media/test-drivers/Makefile | 1 + > > drivers/media/test-drivers/vim2m_audio.c | 680 ++++++++++ > > drivers/media/v4l2-core/v4l2-ctrls-api.c | 5 +- > > drivers/media/v4l2-core/v4l2-ctrls-core.c | 2 + > > drivers/media/v4l2-core/v4l2-ctrls-defs.c | 16 + > > drivers/media/v4l2-core/v4l2-dev.c | 17 + > > drivers/media/v4l2-core/v4l2-ioctl.c | 66 + > > include/media/v4l2-dev.h | 2 + > > include/media/v4l2-ioctl.h | 34 + > > .../fsl =3D> include/sound}/fsl_asrc_common.h | 60 + > > include/uapi/linux/v4l2-controls.h | 9 + > > include/uapi/linux/videodev2.h | 42 + > > sound/soc/fsl/fsl_asrc.c | 144 ++ > > sound/soc/fsl/fsl_asrc.h | 4 +- > > sound/soc/fsl/fsl_asrc_dma.c | 2 +- > > sound/soc/fsl/fsl_easrc.c | 233 ++++ > > sound/soc/fsl/fsl_easrc.h | 6 +- > > 35 files changed, 2771 insertions(+), 11 deletions(-) > > create mode 100644 Documentation/userspace-api/media/v4l/dev-audio-mem= 2mem.rst > > create mode 100644 Documentation/userspace-api/media/v4l/ext-ctrls-aud= io-m2m.rst > > create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-audio.= rst > > create mode 100644 drivers/media/platform/nxp/imx-asrc.c > > create mode 100644 drivers/media/test-drivers/vim2m_audio.c > > rename {sound/soc/fsl =3D> include/sound}/fsl_asrc_common.h (60%) > > >