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Thu, 21 Feb 2019 08:45:00 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=armh.onmicrosoft.com; s=selector1-arm-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=LhEbkI7o0mw7ScnxRcxyjXDT7liGWSx537E0gc0N8UA=; b=nQ3l0zps+CkhBCE7EA0ACOIzbI90tVw4VD3LwGaVM3FWQ8nTywebXSZPiAuB1e07NUauk/VQ4vDVt5GgCD0QS4J+DfK4T4kL7lHwhHtR/AKrMcBACztlohY+t8R3ZXwvlM3rZBuRxexUM/SsOpx7oGvOpJmiwN/MXuYlEJgd6Pc= Received: from AM0PR08MB3025.eurprd08.prod.outlook.com (52.134.93.10) by AM0PR08MB3873.eurprd08.prod.outlook.com (20.178.83.78) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1643.14; Thu, 21 Feb 2019 13:44:56 +0000 Received: from AM0PR08MB3025.eurprd08.prod.outlook.com ([fe80::7e:6dfb:116b:befd]) by AM0PR08MB3025.eurprd08.prod.outlook.com ([fe80::7e:6dfb:116b:befd%2]) with mapi id 15.20.1643.016; Thu, 21 Feb 2019 13:44:56 +0000 From: Brian Starkey To: Laurent Pinchart CC: Laurent Pinchart , Liviu Dudau , nd , Kieran Bingham , "dri-devel@lists.freedesktop.org" , "linux-media@vger.kernel.org" Subject: Re: [PATCH v4 0/7] VSP1: Display writeback support Thread-Topic: [PATCH v4 0/7] VSP1: Display writeback support Thread-Index: AQHUx4SuF0wk/rt+2UuytgV1PyNhIaXp7lqAgAAYUYCAAAOIgIAAJhOAgAABGgCAABbZAA== Date: Thu, 21 Feb 2019 13:44:56 +0000 Message-ID: <20190221134456.ahwo7xt3wcfc6zkw@DESKTOP-E1NTVVP.localdomain> References: <20190217024852.23328-1-laurent.pinchart+renesas@ideasonboard.com> <20190218122257.o5blxfs7jo5xu7ge@DESKTOP-E1NTVVP.localdomain> <20190221082317.GB3451@pendragon.ideasonboard.com> <20190221095019.rht64aylk52jqe5r@DESKTOP-E1NTVVP.localdomain> <20190221100257.GD3451@pendragon.ideasonboard.com> <20190221121913.l7e5zlitcfpvkupi@DESKTOP-E1NTVVP.localdomain> <20190221122310.GM3451@pendragon.ideasonboard.com> In-Reply-To: <20190221122310.GM3451@pendragon.ideasonboard.com> Accept-Language: en-GB, en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: user-agent: NeoMutt/20180716-849-147d51-dirty x-originating-ip: [217.140.106.51] x-clientproxiedby: LO2P265CA0166.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:9::34) To AM0PR08MB3025.eurprd08.prod.outlook.com (2603:10a6:208:5c::10) authentication-results: spf=none (sender IP is ) smtp.mailfrom=Brian.Starkey@arm.com; x-ms-exchange-messagesentrepresentingtype: 1 x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 094b5727-58ea-41d3-6e98-08d69802c3ba x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(5600110)(711020)(4605104)(4618075)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7153060)(7193020);SRVR:AM0PR08MB3873; x-ms-traffictypediagnostic: AM0PR08MB3873: nodisclaimer: True x-microsoft-exchange-diagnostics: 1;AM0PR08MB3873;20:E2qOmYLBgqlTNs2pbTJbxC+qMcgCMZYS393nMLqtTK6XrSt8M8wngZ7NZ+V/PV+lQgCfUOgZK96Ynnl5Kfj68CdRVdapE2y4qdOhaRfDNwkKWTjVjOet+wg3dxbnPqloPrcdSb4TzkwZR1bDiZDHwrYWP3xiG6tCIUYoxH94Ruc= x-microsoft-antispam-prvs: x-forefront-prvs: 09555FB1AD x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(396003)(136003)(366004)(346002)(39860400002)(376002)(189003)(199004)(68736007)(86362001)(3846002)(5660300002)(81156014)(9686003)(6512007)(2906002)(316002)(229853002)(6116002)(6246003)(71190400001)(93886005)(71200400001)(8676002)(305945005)(66066001)(97736004)(6436002)(54906003)(81166006)(8936002)(53936002)(58126008)(7736002)(14454004)(6916009)(486006)(44832011)(256004)(33896004)(105586002)(102836004)(4326008)(11346002)(476003)(386003)(1076003)(99286004)(76176011)(6486002)(478600001)(446003)(186003)(26005)(72206003)(52116002)(25786009)(106356001)(6506007);DIR:OUT;SFP:1101;SCL:1;SRVR:AM0PR08MB3873;H:AM0PR08MB3025.eurprd08.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;MX:1;A:1; received-spf: None (protection.outlook.com: arm.com does not designate permitted sender hosts) x-ms-exchange-senderadcheck: 1 x-microsoft-antispam-message-info: gKmlO9gYKLu1vQXi57sf5cg2oWYmnnWdzpdYqBsrZp1DtxFD9Nu1MxT8M9WlUzQa8WZDCCfu+1n42MV9YcnQtZEgODWXqsV/+vYN6fWmKu1vC72dVz5OQHyo/DV0yq37UpXxvmEq4IqAH5aWeNy4SGFXePo1/c5OMIi/zMbdLJ3BtAEQ2sOEDU/NyNpP2uleHcyGrT3k5lfV2EvgjwYxu/+7f87y/AgcrcUvg3jESzMCrKg1GMU5AvyI1LbtMnwUkmJgC6wU+I9Zj75Oo5Bhi79XkR3FvZIr9Vx0hL9HlUlW3wmgtlFgpyGWnOWrJgHublBRVdFoWu3/FwA9r+zup8yRQWAqH97mmDzf118dcdYTgnHX92n7Xc4bLwyDtKBx+Vjjg3WdPB9mEm8j//hzIf041S6lIckY2Rl/CiKK4J0= Content-Type: text/plain; charset="us-ascii" Content-ID: <8D01D33DD59DF542A3F05AE826C43507@eurprd08.prod.outlook.com> Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: arm.com X-MS-Exchange-CrossTenant-Network-Message-Id: 094b5727-58ea-41d3-6e98-08d69802c3ba X-MS-Exchange-CrossTenant-originalarrivaltime: 21 Feb 2019 13:44:55.9024 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-mailboxtype: HOSTED X-MS-Exchange-CrossTenant-id: f34e5979-57d9-4aaa-ad4d-b122a662184d X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR08MB3873 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org On Thu, Feb 21, 2019 at 02:23:10PM +0200, Laurent Pinchart wrote: > On Thu, Feb 21, 2019 at 12:19:13PM +0000, Brian Starkey wrote: [snip] > >=20 > > I used a pre-existing internal tool which does exactly that. >=20 > Any hope of sharing the sources ? >=20 Not in a timescale or form which would be useful to you. I'm convinced people only ask questions like this to make us look like Bad Guys. Opening everything up is a process, and it's going to take us time. Sure we could be doing better, but I also think there's a lot of people who do worse. > > I appreciate that we don't have upstream tooling for writeback. As you > > say, it's a young API (well, not by date, but certainly by usage). > >=20 > > I also do appreciate you taking the time to consider it, identifying > > issues which we did not, and for fixing them. The only way it stops > > being a young API, with bugs and no tooling, is if people adopt it. >=20 > If the developers who initially pushed the API upstream without an > open-source test tool could spend a bit of time on this issue, I'm sure > it would help too :-) >=20 No one suggested a test test tool before. In fact, the DRM subsystem explicitly requires that features land with something that isn't only a test tool, hence why we did drm_hwcomposer. That said, yes, we should be trying harder to get the igts landed. I personally think igts are far more useful than a random example C file, but I guess opinions differ. Thanks, -Brian