[0/4] media: videobuf2: Add a transfer error event
Message ID | 20211108160220.767586-1-niklas.soderlund+renesas@ragnatech.se (mailing list archive) |
---|---|
Headers |
Received: from vger.kernel.org ([23.128.96.18]) by www.linuxtv.org with esmtp (Exim 4.92) (envelope-from <linux-media-owner@vger.kernel.org>) id 1mk76j-004fiy-Al; Mon, 08 Nov 2021 16:02:53 +0000 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239411AbhKHQFf (ORCPT <rfc822;mkrufky@linuxtv.org> + 1 other); Mon, 8 Nov 2021 11:05:35 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34258 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231401AbhKHQFe (ORCPT <rfc822;linux-media@vger.kernel.org>); Mon, 8 Nov 2021 11:05:34 -0500 Received: from mail-wr1-x42e.google.com (mail-wr1-x42e.google.com [IPv6:2a00:1450:4864:20::42e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CEFC8C061570 for <linux-media@vger.kernel.org>; Mon, 8 Nov 2021 08:02:49 -0800 (PST) Received: by mail-wr1-x42e.google.com with SMTP id d24so27784114wra.0 for <linux-media@vger.kernel.org>; Mon, 08 Nov 2021 08:02:49 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ragnatech-se.20210112.gappssmtp.com; s=20210112; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=8vAP0/smT10scjNRgPBTGipkba7IQbJFUmVsZltLLbM=; b=NlJ0dzrhwsI+PIHtV8DNA9if9rCTIRo07+Kp12SmuZF9yrnHvT9kwDNOrTUlO42f+S On/UlC6AYqt5WUYBBOwD3XIeFde3M4UMZvqtevR9gatyeFykuCItvt4HyhGEqPxSfjCg cqWPidWFTjZ2jbMSvjZHeS5mvemYY/FhHTNZWvUtrO2mCacgfh/HRaoF4S8g1L3O9q3E orZVKESdLKXvin0pEQ9DytuTgsIaaRylfUz0hlULEUIUC9bE/BybeGUS08E7Oespk+WZ JP5kPtWFkdiwfHdt9nJxgA67NZabDgVlAFkr1ZNE5i8C7WlIOBRIXRG5kcbxcwDdpu2i YXjw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=8vAP0/smT10scjNRgPBTGipkba7IQbJFUmVsZltLLbM=; b=A5dHqJmD3GAsRolgKEiLJ13hFrUP3UhlN/A8DnBktpdaIoypiLxTPuyXlYu9st7b+o s1IU3HypbaJ4ISbnBZm1Fc2pTt02kTVNAXPnSmwWmAi3ie8bOrQiTQfpenbSRro7FI49 q/R6p3XxiF+mNOMn6OI8sQ4WBUa8NDj3dQtLw92IfiqONvJCBRfW21UCEGPqTADPbMrI JTMvMcLgQwbrvs/Ttn45vpJaPRtBBDi2d5wupo12pQK96ZD8HAbh6FyNe9rdvKqKokcM +clc7+Aeu28a0rwxQfJw0BsDCChOy1b6RWyDp5vDUlvxbDAbsYeMq4TlXmL9ii8TYRaH Ap9w== X-Gm-Message-State: AOAM532i5upFvQFn+9+zWjpLW7smFMi9r1v92o94P6vxUiPjvq2qE+Ra vfBY8w6+pRblhwBknZungbKZCUGZW+A2hA== X-Google-Smtp-Source: ABdhPJxKzkpGXl2/zwCLSevFelF00cNosG3fmT9AeS80//iffmC+gEFqc3A4Rkl8LK/WccvlwedDwg== X-Received: by 2002:adf:d1c2:: with SMTP id b2mr189788wrd.369.1636387368467; Mon, 08 Nov 2021 08:02:48 -0800 (PST) Received: from bismarck.berto.se (p54ac5892.dip0.t-ipconnect.de. [84.172.88.146]) by smtp.googlemail.com with ESMTPSA id d16sm12703176wmb.37.2021.11.08.08.02.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 08 Nov 2021 08:02:48 -0800 (PST) From: =?utf-8?q?Niklas_S=C3=B6derlund?= <niklas.soderlund+renesas@ragnatech.se> To: Hans Verkuil <hverkuil-cisco@xs4all.nl>, linux-media@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, =?utf-8?q?Niklas_S=C3=B6derlund?= <niklas.soderlund+renesas@ragnatech.se> Subject: [PATCH 0/4] media: videobuf2: Add a transfer error event Date: Mon, 8 Nov 2021 17:02:16 +0100 Message-Id: <20211108160220.767586-1-niklas.soderlund+renesas@ragnatech.se> X-Mailer: git-send-email 2.33.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: <linux-media.vger.kernel.org> X-Mailing-List: linux-media@vger.kernel.org X-LSpam-Score: -2.4 (--) X-LSpam-Report: No, score=-2.4 required=5.0 tests=BAYES_00=-1.9,DKIM_SIGNED=0.1,DKIM_VALID=-0.1,HEADER_FROM_DIFFERENT_DOMAINS=0.5,MAILING_LIST_MULTI=-1 autolearn=ham autolearn_force=no |
Message
Niklas Söderlund
Nov. 8, 2021, 4:02 p.m. UTC
Hello, This series adds a new V4L2 event, V4L2_EVENT_XFER_ERROR. This new event is intended to be used when a device in the capturing pipeline encounters an unrecoverable error and needs to inform the capturing application thru the video node about the error. The fist use-case for this is also demonstrated in this series by the R-Car CSI-2 receiver that generates the new event when it detects an error on the bus. Patch 1/4 is a bug fix for the R-Car VIN driver that was found while working on this series. This patch is good to be picked-up on it's own but is a requirement for later patches in this series so I have opted to include it here as the first patch. Patch 2/4 adds the new V4L2 event. While patch 3/4 and 4/4 makes use of it in the R-Car capture pipeline. Careful readers will note that the last to patches already have a patch history. This is because they have been part of an earlier attempt a while back to solve this issue in a different way, and during those discussions the need for this new event was found. Niklas Söderlund (4): media: rcar-vin: Free buffers with error if hardware stop fails media: videobuf2: Add a transfer error event rcar-vin: Stop stream when subdevice signal transfer error rcar-csi2: Do not try to recover after transfer error .../userspace-api/media/v4l/vidioc-dqevent.rst | 5 +++++ .../media/videodev2.h.rst.exceptions | 1 + drivers/media/platform/rcar-vin/rcar-csi2.c | 17 +++++++++-------- drivers/media/platform/rcar-vin/rcar-dma.c | 10 ++++++++++ drivers/media/platform/rcar-vin/rcar-v4l2.c | 17 ++++++++++++++++- include/uapi/linux/videodev2.h | 1 + 6 files changed, 42 insertions(+), 9 deletions(-)