[{"id":22363,"web_url":"https://patchwork.libcamera.org/comment/22363/","msgid":"<664edc45-d624-4cdd-57b4-e38f48493e29@gmail.com>","date":"2022-03-22T22:08:07","subject":"Re: [libcamera-devel] [PATCH v3 0/5] Introduce ancillary links","submitter":{"id":90,"url":"https://patchwork.libcamera.org/api/people/90/","name":"Daniel Scally","email":"djrscally@gmail.com"},"content":"Hello everyone\n\n\nAny more comments on this series?\n\n\nThanks\n\nDan\n\nOn 02/03/2022 22:02, Daniel Scally wrote:\n> Hello all\n>\n> At present there's no means in the kernel of describing the supporting\n> relationship between subdevices that work together to form an effective single\n> unit - the type example in this case being a camera sensor and its\n> corresponding vcm. To attempt to solve that, this series adds a new type of\n> media link called MEDIA_LNK_FL_ANCILLARY_LINK, which connects two instances of\n> struct media_entity.\n>\n> The mechanism of connection I have modelled as a notifier and async subdev,\n> which seemed the best route since sensor drivers already typically will call\n> v4l2_async_register_subdev_sensor() on probe, and that function already looks\n> for a reference to a firmware node with the reference named \"lens-focus\". To\n> avoid boilerplate in the sensor drivers, I added some new functions in\n> v4l2-async that are called in v4l2_async_match_notify() to create the ancillary\n> links. I haven't gone further than that yet, but I suspect we could cut down on\n> code elsewhere by, for example, also creating pad-to-pad links in the same place\n>\n> Series level changes since v2:\n>\n> - Squashed #2 and #3\n>\n> Series-level changes since v1:\n>\n> \t- New patch adding some documentation to the uAPI pages.\n>\n> Dan\n>\n>\n> Daniel Scally (5):\n> media: entity: Skip non-data links in graph iteration\n> media: media.h: Add new media link type\n> media: entity: Add link_type_name() helper\n> media: entity: Add support for ancillary links\n> media: v4l2-async: Create links during v4l2_async_match_notify()\n>\n> .../media/mediactl/media-controller-model.rst | 6 +++\n> .../media/mediactl/media-types.rst | 17 +++++--\n> drivers/media/mc/mc-entity.c | 46 +++++++++++++++++--\n> drivers/media/v4l2-core/v4l2-async.c | 31 +++++++++++++\n> include/media/media-entity.h | 19 ++++++++\n> include/uapi/linux/media.h | 1 +\n> 6 files changed, 112 insertions(+), 8 deletions(-)\n>","headers":{"Return-Path":"","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 3C443BD80A\n\tfor ;\n\tTue, 22 Mar 2022 22:08:11 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 653E6604DB;\n\tTue, 22 Mar 2022 23:08:10 +0100 (CET)","from mail-wm1-x335.google.com (mail-wm1-x335.google.com\n\t[IPv6:2a00:1450:4864:20::335])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 91A00604C5\n\tfor ;\n\tTue, 22 Mar 2022 23:08:09 +0100 (CET)","by mail-wm1-x335.google.com with SMTP id\n\tj13-20020a05600c1c0d00b0038c8f94aac2so4177579wms.3\n\tfor ;\n\tTue, 22 Mar 2022 15:08:09 -0700 (PDT)","from [192.168.0.14]\n\t(cpc141996-chfd3-2-0-cust928.12-3.cable.virginm.net. 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They've been out for review for quite\nsome time.\n\nThe patches are in my tree waiting for having rc1 in master.","headers":{"Return-Path":"","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 14F88C0F1B\n\tfor ;\n\tTue, 22 Mar 2022 22:13:08 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id 3D66B604DB;\n\tTue, 22 Mar 2022 23:13:07 +0100 (CET)","from mga01.intel.com (mga01.intel.com [192.55.52.88])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id 79511604C5\n\tfor ;\n\tTue, 22 Mar 2022 23:13:05 +0100 (CET)","from orsmga003.jf.intel.com ([10.7.209.27])\n\tby fmsmga101.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; \n\t22 Mar 2022 15:13:03 -0700","from punajuuri.fi.intel.com (HELO paasikivi.fi.intel.com)\n\t([10.237.72.43]) by orsmga003-auth.jf.intel.com with\n\tESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Mar 2022 15:13:01 -0700","from paasikivi.fi.intel.com (localhost [127.0.0.1])\n\tby paasikivi.fi.intel.com (Postfix) with SMTP id E03E620287;\n\tWed, 23 Mar 2022 00:12:58 +0200 (EET)"],"DKIM-Signature":["v=1; a=rsa-sha256; c=relaxed/simple; d=libcamera.org;\n\ts=mail; t=1647987187;\n\tbh=dio9S14HigEoXc9XrqnRqhBLcSLvaRLBAtcIz31J4mE=;\n\th=Date:To:References:In-Reply-To:Subject:List-Id:List-Unsubscribe:\n\tList-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc:\n\tFrom;\n\tb=ip70TFcCpxOJMLlwPqNWg0MjxUDIKxh9L2gClgvhiITpvBuCpN62IEU0BF56oFznn\n\tvg7Nj+ZiB5mvS6LtUD9mAgjy2I7kUe8eyLofcZNP3qIelN/mfXK1G3Bn4PBzWJONeO\n\tTUHC4xqxr5m4I+SFl1PazWYGPZn19H0XCMMOIl4iT78ee5yuX3djrIs0jL4iyuG4/M\n\tNDcNOAB3w7zSYGBqeLRP9zKeQRqLbF+NugeiZT8HGEU42cxfhU/TvNehccgeCzsVb5\n\t3vHX5LQfhdpedUVTJu1aHomCWgrrES1KeQAdwFf9vkuVdCpIdqJHgwahDAqfn3rWbW\n\t2TrhK5JdPA9Qg==","v=1; a=rsa-sha256; c=relaxed/simple;\n\td=intel.com; i=@intel.com; q=dns/txt; s=Intel;\n\tt=1647987185; x=1679523185;\n\th=date:from:to:cc:subject:message-id:references:\n\tmime-version:in-reply-to;\n\tbh=dio9S14HigEoXc9XrqnRqhBLcSLvaRLBAtcIz31J4mE=;\n\tb=b49RNUA/f4nuk2j6gIXNCtNIfNAjTCEShmS5K7Vik1xBUc94A1IdJrA4\n\t+Ccjc83/denTFjXXG4uzb5tLIbLF6X2OnopimaPwpfhV+pHODIw6kbIeR\n\tycbystZQn4yuPPgnu8ahMaFwKfYs6o2nlz41q43pV6+FbbdBzDt7FESCV\n\t+KGjx7ND/OL1DSGG9UlXgfbwp1xRFtZrR2ZjQyB1R5pcj+0OQZFfX3ZJz\n\tcTzjtCOgs4scCv4lRIMCh0+A0rnTmIR2jbjCAJsCNA4/HmV6B2as5bMBh\n\tq6AAogo2s/tngzNsnYEEGvs9w4CULz3Tb3lyInGJmO1ZZLxR45uIpYHXQ w==;"],"Authentication-Results":"lancelot.ideasonboard.com; dkim=pass (2048-bit key; \n\tunprotected) header.d=intel.com header.i=@intel.com\n\theader.b=\"b49RNUA/\"; dkim-atps=neutral","X-IronPort-AV":["E=McAfee;i=\"6200,9189,10294\"; a=\"282803207\"","E=Sophos;i=\"5.90,203,1643702400\"; d=\"scan'208\";a=\"282803207\"","E=Sophos;i=\"5.90,203,1643702400\"; d=\"scan'208\";a=\"500770269\""],"Date":"Wed, 23 Mar 2022 00:12:58 +0200","To":"Daniel Scally ","Message-ID":"","References":"<20220302220304.1327896-1-djrscally@gmail.com>\n\t<664edc45-d624-4cdd-57b4-e38f48493e29@gmail.com>","MIME-Version":"1.0","Content-Type":"text/plain; charset=us-ascii","Content-Disposition":"inline","In-Reply-To":"<664edc45-d624-4cdd-57b4-e38f48493e29@gmail.com>","Subject":"Re: [libcamera-devel] [PATCH v3 0/5] Introduce ancillary links","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","From":"Sakari Ailus via libcamera-devel ","Reply-To":"Sakari Ailus ","Cc":"libcamera-devel@lists.libcamera.org, linux-media@vger.kernel.org","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "}},{"id":22679,"web_url":"https://patchwork.libcamera.org/comment/22679/","msgid":"","date":"2022-04-12T05:31:09","subject":"Re: [libcamera-devel] [PATCH v3 0/5] Introduce ancillary links","submitter":{"id":9,"url":"https://patchwork.libcamera.org/api/people/9/","name":"Tomasz Figa","email":"tfiga@chromium.org"},"content":"Hi Sakari,\n\nOn Wed, Mar 23, 2022 at 7:13 AM Sakari Ailus\n wrote:\n>\n> Hi Daniel,\n>\n> On Tue, Mar 22, 2022 at 10:08:07PM +0000, Daniel Scally wrote:\n> > Hello everyone\n> >\n> >\n> > Any more comments on this series?\n>\n> I hope people are happy with them. They've been out for review for quite\n> some time.\n>\n> The patches are in my tree waiting for having rc1 in master.\n\nThanks for picking this series. Do you think you could add your tree\nto linux-next, so we could easily test changes that you pick?\n\nBest regards,\nTomasz\n\n>\n> --\n> Kind regards,\n>\n> Sakari Ailus","headers":{"Return-Path":"","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 7C995C0F1B\n\tfor ;\n\tTue, 12 Apr 2022 05:31:28 +0000 (UTC)","from lancelot.ideasonboard.com (localhost [IPv6:::1])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTP id A3BC065644;\n\tTue, 12 Apr 2022 07:31:27 +0200 (CEST)","from mail-qv1-xf32.google.com (mail-qv1-xf32.google.com\n\t[IPv6:2607:f8b0:4864:20::f32])\n\tby lancelot.ideasonboard.com (Postfix) with ESMTPS id ADDBB604B1\n\tfor ;\n\tTue, 12 Apr 2022 07:31:25 +0200 (CEST)","by mail-qv1-xf32.google.com with SMTP id x20so6081040qvl.10\n\tfor ;\n\tMon, 11 Apr 2022 22:31:25 -0700 (PDT)","from mail-yb1-f175.google.com (mail-yb1-f175.google.com.\n\t[209.85.219.175]) by smtp.gmail.com with ESMTPSA id\n\t189-20020a370bc6000000b0069bf5702d5bsm6297188qkl.26.2022.04.11.22.31.22\n\tfor \n\t(version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128);\n\tMon, 11 Apr 2022 22:31:22 -0700 (PDT)","by mail-yb1-f175.google.com with SMTP id f17so328636ybj.10\n\tfor ;\n\tMon, 11 Apr 2022 22:31:22 -0700 (PDT)"],"DKIM-Signature":["v=1; a=rsa-sha256; c=relaxed/simple; d=libcamera.org;\n\ts=mail; t=1649741487;\n\tbh=HKPKauJ9wYgyDYofZbLBEn/Qd7t5fvEoaSfVOvhmeqA=;\n\th=References:In-Reply-To:Date:To:Subject:List-Id:List-Unsubscribe:\n\tList-Archive:List-Post:List-Help:List-Subscribe:From:Reply-To:Cc:\n\tFrom;\n\tb=W0NRj+O+AeKl2TwBuOA6icNQrV4Ro83abnftAsqWGvVTsaA7IQewj/wfxaJpj0Zj8\n\tZmcRRepl9mMA6Oy0kj6wvMxjYDVcSYWjaX5sX1WF2fs+f8PxHRPIoP4IWUDeLz+N8f\n\t8H7Sxv28aNU63w2pWJvB6SDF3AYsnRfIn3Ze2U3EnEU7tbEf1mnYYmmwCToJyMHC+/\n\t89viVDd7a129RMerJgz2DjTHzJpiRIifSiME6MWbUMeR2uk/C+4cYzDrG+AsdcsqeY\n\tECVZjRVm+xvdC22dTjTyAXgZz7T16Q5JqYlzaOY1g4ml/RMmOcVlxQI0SFyQdKAjcn\n\t5s+dAYsuMIoMw==","v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org;\n\ts=google; \n\th=mime-version:references:in-reply-to:from:date:message-id:subject:to\n\t:cc; bh=HKPKauJ9wYgyDYofZbLBEn/Qd7t5fvEoaSfVOvhmeqA=;\n\tb=dBxwJBnTvqgxkRm//V+pVp11vnAmr6FFqtgtR8wOF43Ghbt/MYJfFM/lP1mFLRQ2Ae\n\tNCD/4HJ2WEuq/55JWWVzMDszzPwZ3DbFds7P7vkHZVNnbKdW46IW9RNQO8K3xYm2i48q\n\t+ZYNuOnOCXJBYTE+cLTsuk/VBJ8Z5ilz8rPeI="],"Authentication-Results":"lancelot.ideasonboard.com; dkim=pass (1024-bit key; \n\tunprotected) header.d=chromium.org\n\theader.i=@chromium.org header.b=\"dBxwJBnT\"; \n\tdkim-atps=neutral","X-Google-DKIM-Signature":"v=1; a=rsa-sha256; c=relaxed/relaxed;\n\td=1e100.net; s=20210112;\n\th=x-gm-message-state:mime-version:references:in-reply-to:from:date\n\t:message-id:subject:to:cc;\n\tbh=HKPKauJ9wYgyDYofZbLBEn/Qd7t5fvEoaSfVOvhmeqA=;\n\tb=KVRacowtU675Xgg2EC6guVUwZj4ANMQ9YBXOXQYqQyralhrtycZX7fyaWxMHBhA5aY\n\tk0cj8pH2mICLjlN2MnO994ykhDZzn6GSMdL2orShaXb5Bic7WtsPuWrp/TZYUYkFXwaV\n\t+DinVCEmqrFkQk0gkG/DyiLjMeqBXsL9jL0LkQ+kDJzNKmCsU6YoOuFmUGzuqWh5SdXG\n\tgPB/qNnZ4V2SGahJVwcNxjh2oTak8zWsdO8HfJTLgJVRZKiG6H2GqNTGsArc2TF/UMv0\n\t49TgykaeoA5yrvuVko5AVzrW0rXUbJmQl4yZdxN585math5oW0uJNVrCeVYAol2W+w4D\n\tAFtQ==","X-Gm-Message-State":"AOAM533hvzluxHuHbgNYjpEjCGXx+uD0+KeNbiEXSmwY+T6rDrbR/494\n\t4H9DOcUqV1q6m8vwMHGdF/vTLN+jOLGer+mX","X-Google-Smtp-Source":"ABdhPJxjn0EHL3H5CemlQRLTyzTCu2LMPB816FwD45DHok8Qgnc2FXqK9TJNSPakSSOGIkcYwFCAOw==","X-Received":["by 2002:ad4:5903:0:b0:444:45b9:e71a with SMTP id\n\tez3-20020ad45903000000b0044445b9e71amr7159389qvb.101.1649741483676; \n\tMon, 11 Apr 2022 22:31:23 -0700 (PDT)","by 2002:a25:2e4f:0:b0:641:3aac:bef0 with SMTP id\n\tb15-20020a252e4f000000b006413aacbef0mr7964073ybn.493.1649741481759;\n\tMon, 11 Apr 2022 22:31:21 -0700 (PDT)"],"MIME-Version":"1.0","References":"<20220302220304.1327896-1-djrscally@gmail.com>\n\t<664edc45-d624-4cdd-57b4-e38f48493e29@gmail.com>\n\t","In-Reply-To":"","Date":"Tue, 12 Apr 2022 14:31:09 +0900","X-Gmail-Original-Message-ID":"","Message-ID":"","To":"Sakari Ailus ","Content-Type":"text/plain; charset=\"UTF-8\"","Subject":"Re: [libcamera-devel] [PATCH v3 0/5] Introduce ancillary links","X-BeenThere":"libcamera-devel@lists.libcamera.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","From":"Tomasz Figa via libcamera-devel ","Reply-To":"Tomasz Figa ","Cc":"libcamera-devel@lists.libcamera.org, linux-media@vger.kernel.org","Errors-To":"libcamera-devel-bounces@lists.libcamera.org","Sender":"\"libcamera-devel\" "}}]