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{ "id": 24706, "url": "https://patchwork.libcamera.org/api/1.1/patches/24706/?format=api", "web_url": "https://patchwork.libcamera.org/patch/24706/", "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": "<20251020122400.1759110-2-antoine.bouyer@nxp.com>", "date": "2025-10-20T12:24:00", "name": "[v1,1/1] pipeline: imx8-isi: Delay ISI routes config to acquire() time", "commit_ref": null, "pull_url": null, "state": "superseded", "archived": false, "hash": "ed05ee4a4d093d8e9dc0a417c66dae8c9874ff78", "submitter": { "id": 218, "url": "https://patchwork.libcamera.org/api/1.1/people/218/?format=api", "name": "Antoine Bouyer", "email": "antoine.bouyer@nxp.com" }, "delegate": null, "mbox": "https://patchwork.libcamera.org/patch/24706/mbox/", "series": [ { "id": 5512, "url": "https://patchwork.libcamera.org/api/1.1/series/5512/?format=api", "web_url": "https://patchwork.libcamera.org/project/libcamera/list/?series=5512", "date": "2025-10-20T12:23:59", "name": "imx8-isi: Move isi routing into acquireDevice", "version": 1, "mbox": "https://patchwork.libcamera.org/series/5512/mbox/" } ], "comments": "https://patchwork.libcamera.org/api/patches/24706/comments/", "check": "pending", "checks": "https://patchwork.libcamera.org/api/patches/24706/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 C38C8C32CE\n\tfor <parsemail@patchwork.libcamera.org>;\n\tMon, 20 Oct 2025 12:22:19 +0000 (UTC)", "from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 2FA146072D;\n\tMon, 20 Oct 2025 14:22:18 +0200 (CEST)", "from AM0PR02CU008.outbound.protection.outlook.com\n\t(mail-westeuropeazlp170130006.outbound.protection.outlook.com\n\t[IPv6:2a01:111:f403:c201::6])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 70E4860713\n\tfor <libcamera-devel@lists.libcamera.org>;\n\tMon, 20 Oct 2025 14:22:15 +0200 (CEST)", "from GVXPR04MB9831.eurprd04.prod.outlook.com (2603:10a6:150:11c::8)\n\tby VI0PR04MB11546.eurprd04.prod.outlook.com (2603:10a6:800:301::11)\n\twith Microsoft SMTP Server (version=TLS1_2,\n\tcipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.9228.14;\n\tMon, 20 Oct 2025 12:22:14 +0000", "from GVXPR04MB9831.eurprd04.prod.outlook.com\n\t([fe80::4634:3d9c:c4a:641a]) by\n\tGVXPR04MB9831.eurprd04.prod.outlook.com\n\t([fe80::4634:3d9c:c4a:641a%6]) with mapi id 15.20.9228.015;\n\tMon, 20 Oct 2025 12:22:14 +0000" ], "Authentication-Results": [ "lancelot.ideasonboard.com; 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But only the unique process that lock the media\ndevices in order to be able to configure then start the pipeline should\nsetup the routes, graphs etc.\n\nThus, the setRouting() is to be moved to a PipelineHandlerISI::acquireDevice()\nimplementation to override the default Pipeline::acquireDevice() function.\n\nFixes: 92df79112fb2 (\"pipeline: imx8-isi: Add multicamera support\")\n\nSigned-off-by: Andrei Gansari <andrei.gansari@nxp.com>\nTested-by: Antoine Bouyer <antoine.bouyer@nxp.com>\n---\n src/libcamera/pipeline/imx8-isi/imx8-isi.cpp | 46 +++++++++++++++++---\n 1 file changed, 40 insertions(+), 6 deletions(-)", "diff": "diff --git a/src/libcamera/pipeline/imx8-isi/imx8-isi.cpp b/src/libcamera/pipeline/imx8-isi/imx8-isi.cpp\nindex de09431cb9b9..26f556bbb819 100644\n--- a/src/libcamera/pipeline/imx8-isi/imx8-isi.cpp\n+++ b/src/libcamera/pipeline/imx8-isi/imx8-isi.cpp\n@@ -71,6 +71,8 @@ public:\n \n \tunsigned int xbarSink_ = 0;\n \tunsigned int xbarSourceOffset_ = 0;\n+\n+\tconst std::string &cameraName() const { return sensor_->entity()->name(); }\n };\n \n class ISICameraConfiguration : public CameraConfiguration\n@@ -117,6 +119,9 @@ protected:\n \n \tint queueRequestDevice(Camera *camera, Request *request) override;\n \n+\tbool acquireDevice(Camera *camera) override;\n+\tvoid releaseDevice(Camera *camera) override;\n+\n private:\n \tstatic constexpr Size kPreviewSize = { 1920, 1080 };\n \tstatic constexpr Size kMinISISize = { 1, 1 };\n@@ -143,6 +148,10 @@ private:\n \n \tstd::unique_ptr<V4L2Subdevice> crossbar_;\n \tstd::vector<Pipe> pipes_;\n+\n+\tunsigned int acquireCount_ = 0;\n+\n+\tV4L2Subdevice::Routing routing_ = {};\n };\n \n /* -----------------------------------------------------------------------------\n@@ -950,6 +959,36 @@ int PipelineHandlerISI::queueRequestDevice(Camera *camera, Request *request)\n \treturn 0;\n }\n \n+bool PipelineHandlerISI::acquireDevice(Camera *camera)\n+{\n+\tISICameraData *data = cameraData(camera);\n+\tint ret;\n+\n+\tacquireCount_++;\n+\tLOG(ISI, Debug) << \"acquireDevice \" << data->cameraName()\n+\t\t\t<< \" count \" << acquireCount_;\n+\n+\tif (acquireCount_ > 1)\n+\t\treturn true;\n+\n+\t/* Enable routing for all available sensors once */\n+\tret = crossbar_->setRouting(&routing_, V4L2Subdevice::ActiveFormat);\n+\tif (ret)\n+\t\treturn ret;\n+\n+\treturn true;\n+}\n+\n+void PipelineHandlerISI::releaseDevice(Camera *camera)\n+{\n+\tISICameraData *data = cameraData(camera);\n+\n+\tASSERT(acquireCount_);\n+\tacquireCount_--;\n+\tLOG(ISI, Debug) << \"releaseDevice \" << data->cameraName()\n+\t\t\t<< \" count \" << acquireCount_;\n+}\n+\n bool PipelineHandlerISI::match(DeviceEnumerator *enumerator)\n {\n \tDeviceMatch dm(\"mxc-isi\");\n@@ -1034,7 +1073,6 @@ bool PipelineHandlerISI::match(DeviceEnumerator *enumerator)\n \tunsigned int numSinks = 0;\n \tconst unsigned int xbarFirstSource = crossbar_->entity()->pads().size() - pipes_.size();\n \tconst unsigned int maxStreams = pipes_.size() / cameraCount;\n-\tV4L2Subdevice::Routing routing = {};\n \n \tfor (MediaPad *pad : crossbar_->entity()->pads()) {\n \t\tunsigned int sink = numSinks;\n@@ -1104,7 +1142,7 @@ bool PipelineHandlerISI::match(DeviceEnumerator *enumerator)\n \t\t/* Add routes to the crossbar switch routing table. */\n \t\tfor (unsigned i = 0; i < data->streams_.size(); i++) {\n \t\t\tunsigned int sourcePad = xbarFirstSource + data->xbarSourceOffset_ + i;\n-\t\t\trouting.emplace_back(V4L2Subdevice::Stream{ data->xbarSink_, 0 },\n+\t\t\trouting_.emplace_back(V4L2Subdevice::Stream{ data->xbarSink_, 0 },\n \t\t\t\t\t V4L2Subdevice::Stream{ sourcePad, 0 },\n \t\t\t\t\t V4L2_SUBDEV_ROUTE_FL_ACTIVE);\n \t\t}\n@@ -1116,10 +1154,6 @@ bool PipelineHandlerISI::match(DeviceEnumerator *enumerator)\n \t\tnumCameras++;\n \t}\n \n-\tret = crossbar_->setRouting(&routing, V4L2Subdevice::ActiveFormat);\n-\tif (ret)\n-\t\treturn false;\n-\n \treturn numCameras > 0;\n }\n \n", "prefixes": [ "v1", "1/1" ] }