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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3181AC25B47 for ; Wed, 25 Oct 2023 10:25:21 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234784AbjJYKZU (ORCPT ); Wed, 25 Oct 2023 06:25:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40194 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234792AbjJYKZO (ORCPT ); Wed, 25 Oct 2023 06:25:14 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A2B2CB0; Wed, 25 Oct 2023 03:25:11 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 09288C433C8; Wed, 25 Oct 2023 10:25:07 +0000 (UTC) Message-ID: <0e2e072d-3d21-4d60-9cc7-95b9b5b44ed4@xs4all.nl> Date: Wed, 25 Oct 2023 12:25:06 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH v7 06/13] media: uapi: Add V4L2_CAP_AUDIO_M2M capability flag Content-Language: en-US, nl To: Shengjiu Wang , sakari.ailus@iki.fi, tfiga@chromium.org, m.szyprowski@samsung.com, mchehab@kernel.org, linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, shengjiu.wang@gmail.com, Xiubo.Lee@gmail.com, festevam@gmail.com, nicoleotsuka@gmail.com, lgirdwood@gmail.com, broonie@kernel.org, perex@perex.cz, tiwai@suse.com, alsa-devel@alsa-project.org, linuxppc-dev@lists.ozlabs.org References: <1697794232-2607-1-git-send-email-shengjiu.wang@nxp.com> <1697794232-2607-7-git-send-email-shengjiu.wang@nxp.com> From: Hans Verkuil Autocrypt: addr=hverkuil@xs4all.nl; 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charset=UTF-8 Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 20/10/2023 11:30, Shengjiu Wang wrote: > V4L2_CAP_AUDIO_M2M is similar to V4L2_CAP_VIDEO_M2M flag. > > It is used for audio memory to memory case. > > Signed-off-by: Shengjiu Wang > --- > Documentation/userspace-api/media/v4l/vidioc-querycap.rst | 3 +++ > Documentation/userspace-api/media/videodev2.h.rst.exceptions | 1 + > include/uapi/linux/videodev2.h | 1 + > 3 files changed, 5 insertions(+) > > diff --git a/Documentation/userspace-api/media/v4l/vidioc-querycap.rst b/Documentation/userspace-api/media/v4l/vidioc-querycap.rst > index 6c57b8428356..0b3cefefc86b 100644 > --- a/Documentation/userspace-api/media/v4l/vidioc-querycap.rst > +++ b/Documentation/userspace-api/media/v4l/vidioc-querycap.rst > @@ -259,6 +259,9 @@ specification the ioctl returns an ``EINVAL`` error code. > video topology configuration, including which I/O entity is routed to > the input/output, is configured by userspace via the Media Controller. > See :ref:`media_controller`. > + * - ``V4L2_CAP_AUDIO_M2M`` > + - 0x40000000 > + - The device supports the audio Memory-To-Memory interface. > * - ``V4L2_CAP_DEVICE_CAPS`` > - 0x80000000 > - The driver fills the ``device_caps`` field. This capability can > diff --git a/Documentation/userspace-api/media/videodev2.h.rst.exceptions b/Documentation/userspace-api/media/videodev2.h.rst.exceptions > index 3e58aac4ef0b..da6d0b8e4c2c 100644 > --- a/Documentation/userspace-api/media/videodev2.h.rst.exceptions > +++ b/Documentation/userspace-api/media/videodev2.h.rst.exceptions > @@ -197,6 +197,7 @@ replace define V4L2_CAP_META_OUTPUT device-capabilities > replace define V4L2_CAP_DEVICE_CAPS device-capabilities > replace define V4L2_CAP_TOUCH device-capabilities > replace define V4L2_CAP_IO_MC device-capabilities > +replace define V4L2_CAP_AUDIO_M2M device-capabilities > > # V4L2 pix flags > replace define V4L2_PIX_FMT_PRIV_MAGIC :c:type:`v4l2_pix_format` > diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h > index c3d4e490ce7c..d5da76607101 100644 > --- a/include/uapi/linux/videodev2.h > +++ b/include/uapi/linux/videodev2.h > @@ -508,6 +508,7 @@ struct v4l2_capability { > #define V4L2_CAP_TOUCH 0x10000000 /* Is a touch device */ > > #define V4L2_CAP_IO_MC 0x20000000 /* Is input/output controlled by the media controller */ > +#define V4L2_CAP_AUDIO_M2M 0x40000000 /* audio memory to memory */ Let's pick 0x00000008 for this to fill up a hole in the caps. Regards, Hans > > #define V4L2_CAP_DEVICE_CAPS 0x80000000 /* sets device capabilities field */ >