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{ "id": 11051, "url": "https://patchwork.libcamera.org/api/1.1/patches/11051/?format=api", "web_url": "https://patchwork.libcamera.org/patch/11051/", "project": { "id": 1, "url": "https://patchwork.libcamera.org/api/1.1/projects/1/?format=api", "name": "libcamera", "link_name": "libcamera", "list_id": "libcamera_core", "list_email": "libcamera-devel@lists.libcamera.org", "web_url": "", "scm_url": "", "webscm_url": "" }, "msgid": "<20210129111616.1047483-2-naush@raspberrypi.com>", "date": "2021-01-29T11:16:12", "name": "[libcamera-devel,v4,1/5] libcamera: camera_sensor: Make VBLANK mandatory", "commit_ref": null, "pull_url": null, "state": "accepted", "archived": false, "hash": "de015c3f7f6774f9259f31b8bcbbf5c6774d377f", "submitter": { "id": 34, "url": "https://patchwork.libcamera.org/api/1.1/people/34/?format=api", "name": "Naushir Patuck", "email": "naush@raspberrypi.com" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/11051/mbox/", "series": [ { "id": 1625, "url": "https://patchwork.libcamera.org/api/1.1/series/1625/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=1625", "date": "2021-01-29T11:16:11", "name": "Raspberry Pi: FrameDurations control refinements", "version": 4, "mbox": "https://patchwork.libcamera.org/series/1625/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/11051/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/11051/checks/", "tags": {}, "headers": { "Return-Path": "<libcamera-devel-bounces@lists.libcamera.org>", "X-Original-To": "parsemail@patchwork.libcamera.org", "Delivered-To": "parsemail@patchwork.libcamera.org", "Received": [ "from lancelot.ideasonboard.com (lancelot.ideasonboard.com\n\t[92.243.16.209])\n\tby patchwork.libcamera.org (Postfix) with ESMTPS id 6C117BD808\n\tfor <parsemail@patchwork.libcamera.org>;\n\tFri, 29 Jan 2021 11:16:27 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 3E75D683AA;\n\tFri, 29 Jan 2021 12:16:27 +0100 (CET)", "from mail-wr1-x434.google.com (mail-wr1-x434.google.com\n\t[IPv6:2a00:1450:4864:20::434])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id E6C75683A2\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tFri, 29 Jan 2021 12:16:25 +0100 (CET)", "by mail-wr1-x434.google.com with SMTP id m13so8432076wro.12\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tFri, 29 Jan 2021 03:16:25 -0800 (PST)", "from naushir-VirtualBox.patuck.local ([88.97.76.4])\n\tby smtp.gmail.com with ESMTPSA id\n\tf14sm11324007wre.69.2021.01.29.03.16.22\n\t(version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256);\n\tFri, 29 Jan 2021 03:16:23 -0800 (PST)" ], "Authentication-Results": "lancelot.ideasonboard.com;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n\tunprotected) header.d=raspberrypi.com header.i=@raspberrypi.com\n\theader.b=\"PhjfmVro\"; 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\n\tFri, 29 Jan 2021 03:16:25 -0800 (PST)", "From": "Naushir Patuck <naush@raspberrypi.com>", "To": "libcamera-devel@lists.libcamera.org", "Date": "Fri, 29 Jan 2021 11:16:12 +0000", "Message-Id": "<20210129111616.1047483-2-naush@raspberrypi.com>", "X-Mailer": "git-send-email 2.25.1", "In-Reply-To": "<20210129111616.1047483-1-naush@raspberrypi.com>", "References": "<20210129111616.1047483-1-naush@raspberrypi.com>", "MIME-Version": "1.0", "Subject": "[libcamera-devel] [PATCH v4 1/5] libcamera: camera_sensor: Make\n\tVBLANK mandatory", "X-BeenThere": "libcamera-devel@lists.libcamera.org", "X-Mailman-Version": "2.1.29", "Precedence": "list", "List-Id": "<libcamera-devel.lists.libcamera.org>", "List-Unsubscribe": "<https://lists.libcamera.org/options/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=unsubscribe>", "List-Archive": "<https://lists.libcamera.org/pipermail/libcamera-devel/>", "List-Post": "<mailto:libcamera-devel@lists.libcamera.org>", "List-Help": "<mailto:libcamera-devel-request@lists.libcamera.org?subject=help>", "List-Subscribe": "<https://lists.libcamera.org/listinfo/libcamera-devel>,\n\t<mailto:libcamera-devel-request@lists.libcamera.org?subject=subscribe>", "Content-Type": "text/plain; charset=\"us-ascii\"", "Content-Transfer-Encoding": "7bit", "Errors-To": "libcamera-devel-bounces@lists.libcamera.org", "Sender": "\"libcamera-devel\" <libcamera-devel-bounces@lists.libcamera.org>" }, "content": "From: Jacopo Mondi <jacopo@jmondi.org>\n\nAdd the V4L2_CID_VBLANK control to the list of mandatory controls\nthe sensor driver has to report and document the new requirement.\n\nThe vertical blanking control is used to calculate the frame duration.\n\nSigned-off-by: Jacopo Mondi <jacopo@jmondi.org>\nSigned-off-by: Naushir Patuck <naush@raspberrypi.com>\nReviewed-by: Naushir Patuck <naush@raspberrypi.com>\n---\n Documentation/sensor_driver_requirements.rst | 6 ++++--\n src/libcamera/camera_sensor.cpp | 1 +\n 2 files changed, 5 insertions(+), 2 deletions(-)", "diff": "diff --git a/Documentation/sensor_driver_requirements.rst b/Documentation/sensor_driver_requirements.rst\nindex 6dcd4e68d64d..590797f054ce 100644\n--- a/Documentation/sensor_driver_requirements.rst\n+++ b/Documentation/sensor_driver_requirements.rst\n@@ -27,18 +27,20 @@ The sensor driver shall support the following V4L2 controls:\n * `V4L2_CID_EXPOSURE`_\n * `V4L2_CID_HBLANK`_\n * `V4L2_CID_PIXEL_RATE`_\n+* `V4L2_CID_VBLANK`_\n \n .. _V4L2_CID_EXPOSURE: https://www.kernel.org/doc/html/latest/userspace-api/media/v4l/control.html\n .. _V4L2_CID_HBLANK: https://www.kernel.org/doc/html/latest/userspace-api/media/v4l/ext-ctrls-image-source.html\n .. _V4L2_CID_PIXEL_RATE: https://www.kernel.org/doc/html/latest/userspace-api/media/v4l/ext-ctrls-image-process.html\n+.. _V4L2_CID_VBLANK: https://www.kernel.org/doc/html/latest/userspace-api/media/v4l/ext-ctrls-image-source.html\n \n While V4L2 doesn't specify a unit for the `EXPOSURE` control, libcamera requires\n it to be expressed as a number of image lines. Camera sensor drivers that do not\n comply with this requirement will need to be adapted or will produce incorrect\n results.\n \n-The `HBLANK` and `PIXEL_RATE` controls are used to compute the sensor output\n-timings.\n+The `HBLANK`, `PIXEL_RATE` and `VBLANK` controls are used to compute the sensor\n+output timings.\n \n Optional Requirements\n ---------------------\ndiff --git a/src/libcamera/camera_sensor.cpp b/src/libcamera/camera_sensor.cpp\nindex ca33c0094088..ab315bdc468c 100644\n--- a/src/libcamera/camera_sensor.cpp\n+++ b/src/libcamera/camera_sensor.cpp\n@@ -244,6 +244,7 @@ int CameraSensor::validateSensorDriver()\n \t\tV4L2_CID_EXPOSURE,\n \t\tV4L2_CID_HBLANK,\n \t\tV4L2_CID_PIXEL_RATE,\n+\t\tV4L2_CID_VBLANK,\n \t};\n \n \tControlList ctrls = subdev_->getControls(mandatoryControls);\n", "prefixes": [ "libcamera-devel", "v4", "1/5" ] }