From patchwork Fri Feb 2 23:09:17 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 769308 Received: from EUR03-AM7-obe.outbound.protection.outlook.com (mail-am7eur03on2069.outbound.protection.outlook.com [40.107.105.69]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9692212C7E6; Fri, 2 Feb 2024 23:09:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.105.69 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706915388; cv=fail; b=UsSK4qN13hs4kF+9x0HVLCOeqgg+xh6ypLLI7WehFOnTYezHCOc03SqTCx34AT298f1Mw1bzMLpugw24aunIg8yu4uxeYfmaJrTRp1KNQdp890SI/lfoZrxDTGKXA84mP0rSmYDIMZpp7bOmLuAYiUcn9DLrPvIf/HNcL2JrTh8= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706915388; c=relaxed/simple; bh=lpo5yoDxEjAMAATeuR+ObkAv5g4Z/DAVD2hkbmgALyw=; h=From:To:Cc:Subject:Date:Message-Id:Content-Type:MIME-Version; b=l11OwP4//ITVr01rbYGa3jtSOXtiSF2TUYoJh6xQ/Jkb/+A2a+LrTL1odC+Hmf7r1+Tszfdk/E3WAFIRSUnLOdgOibRRIaLA1qF/kpjWL7tOKXVxsUjUrUeNXtyAf3MOzHQS7MO5jJ+vIwcK0XYsH+Aun54NnxIr4vvhuCjgZfM= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com; spf=pass smtp.mailfrom=nxp.com; dkim=pass (1024-bit key) header.d=nxp.com header.i=@nxp.com header.b=XhTErwsY; arc=fail smtp.client-ip=40.107.105.69 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=nxp.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=nxp.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=nxp.com header.i=@nxp.com header.b="XhTErwsY" ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=Ci1CkSiZdn6/ONSYeiJg1Qu30MC6vLgMLE1CLgsrtdyBY+6AIx+o8E99GJH5HO4mAbhvZ6HFSn8O19ZdxYqdoHcjfEsaFOIpCCrxpGlMwZ8X5IvUtIWm/N17tFO2holabYGGIg59L/WlgpraBuUIr75yA4EChQEUjKTWYSRwdd+RPzVUul1KiXXPfP0UIGyhxfYlVlFPJZYJ//CGzGUl2mAnW1IeOiN5+6IKd/h7lYlghxNbIjt9JCyKq4VECGjeSbZdxocLOy+VHA3fsREJr3SmJSisZ12fclHHg8dBgiCeVUbGsdL3KyohYP2dcqPg49FRFucuFSJg22/gozFLBQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=byDnXsXx+ABdHA0brvZRkAWtWoHaTwoTe+9Xa1hY668=; b=dbzhQz46SAMvtlv8EiIRJeCM3g2goo7g8rhTe1nHIQxO1UMJFa9qtuMm98RnEG01lzfnjEmWW4S094gbEi/FxFObsSGiAnpjY3m3YlcByQMioJj0yr2WvPePfOFlmebicfYDugavvUR1aTTdxa0Bh4xNl+Jhac6ZH+QoU+JYBbGJNet/OUkPvORiJmEQlbusbYS4Zut9Za3Vk1lGVCKWYjwtVpYH0FGnWkfzElWKK6c8ru8rTmcH5dUuYO+G6U0sWtxIDdJU56hnEVVetqyy3NvZk06dx9z16xDOMVjgBnExAVssZhtNevt79vKtMu8np3CQRxkuRDZs99l3hxrM/g== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=nxp.com; dmarc=pass action=none header.from=nxp.com; dkim=pass header.d=nxp.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=byDnXsXx+ABdHA0brvZRkAWtWoHaTwoTe+9Xa1hY668=; b=XhTErwsYryB7L7uHHUjlmlxEd4GermKrjUONuRts0CaDCzq2A9mukE8XGGEiDRsNl0SJO7GF+Z3w0S5a18VcOxReWOfAO7RGbhnGlpD4lA57gmAc7DEEN6cbg02TQXWstBvWeI14OE7mb9IBsUUpitxD6DIFk/UVY0KgtgtV9pM= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from PAXPR04MB9642.eurprd04.prod.outlook.com (2603:10a6:102:240::14) by AS5PR04MB9997.eurprd04.prod.outlook.com (2603:10a6:20b:67c::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7249.26; Fri, 2 Feb 2024 23:09:43 +0000 Received: from PAXPR04MB9642.eurprd04.prod.outlook.com ([fe80::c8b4:5648:8948:e85c]) by PAXPR04MB9642.eurprd04.prod.outlook.com ([fe80::c8b4:5648:8948:e85c%3]) with mapi id 15.20.7249.027; Fri, 2 Feb 2024 23:09:43 +0000 From: Frank Li To: frank.li@nxp.com Cc: alexandre.belloni@bootlin.com, conor.culhane@silvaco.com, devicetree@vger.kernel.org, gregkh@linuxfoundation.org, ilpo.jarvinen@linux.intel.com, imx@lists.linux.dev, jirislaby@kernel.org, joe@perches.com, krzysztof.kozlowski+dt@linaro.org, krzysztof.kozlowski@linaro.org, linux-i3c@lists.infradead.org, linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, miquel.raynal@bootlin.com, robh@kernel.org, zbigniew.lukwinski@linux.intel.com Subject: [PATCH v6 0/8] I3C target mode support Date: Fri, 2 Feb 2024 18:09:17 -0500 Message-Id: <20240202230925.1000659-1-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 X-ClientProxiedBy: BYAPR08CA0030.namprd08.prod.outlook.com (2603:10b6:a03:100::43) To PAXPR04MB9642.eurprd04.prod.outlook.com (2603:10a6:102:240::14) Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: PAXPR04MB9642:EE_|AS5PR04MB9997:EE_ X-MS-Office365-Filtering-Correlation-Id: fb06fc0f-3d3c-4527-35b3-08dc24440a85 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:PAXPR04MB9642.eurprd04.prod.outlook.com; PTR:; CAT:NONE; SFS:(13230031)(396003)(366004)(39860400002)(136003)(346002)(376002)(230922051799003)(230273577357003)(1800799012)(451199024)(64100799003)(186009)(2616005)(1076003)(41300700001)(26005)(38350700005)(52116002)(7416002)(6512007)(316002)(36756003)(37006003)(6506007)(83380400001)(6666004)(478600001)(66556008)(38100700002)(66476007)(4326008)(6486002)(2906002)(86362001)(66946007)(8936002)(8676002)(34206002)(5660300002); DIR:OUT; SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: fb06fc0f-3d3c-4527-35b3-08dc24440a85 X-MS-Exchange-CrossTenant-AuthSource: PAXPR04MB9642.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Feb 2024 23:09:43.3860 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: nyMip/sdnqp4kG12Cp4GuxWAPtPHAiGkcCJDGcAvPQqSg2kwdZW7G1lAG+lJPchsOVKkI1STSNM7NIHtIOzfJw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS5PR04MB9997 This patch introduces support for I3C target mode, which is referenced with a PCIe Endpoint system. It also establishes a configuration framework (configfs) for the I3C target controller driver and the I3C target function driver Typic usage as The user can configure the i3c-target-tty device using configfs entry. In order to change the vendorid, the following commands can be used # echo 0x011b > functions/tty/func1/vendor_id # echo 0x1000 > functions/tty/func1/part_id # echo 0x6 > functions/tty/t/bcr Binding i3c-target-tty Device to target Controller ------------------------------------------------ In order for the target function device to be useful, it has to be bound to a I3C target controller driver. Use the configfs to bind the function device to one of the controller driver present in the system:: # ln -s functions/pci_epf_test/func1 controllers/44330000.i3c-target/ Host side: cat /dev/ttyI3C0 Taret side: echo abc >/dev/ttyI3C0 Chagne from v2 to v3 - using 'mode' distingiush master and target. - move svc-i3c-target.c to under master, - built together with svc-i3c-master.c Change from v1 to v2 - change "slave" to "target" - include master side tty patch - fixed dtbcheck problem - fixed kerne-doc check warning Some review comment may be lost since it is quite long time since v1. Now master side dependent patches already in linux-next. So sent target side patches with tty support again. No sure why an additional "\r\n" appended. Frank Li (8): i3c: add target mode support dt-bindings: i3c: svc: add proptery mode Documentation: i3c: Add I3C target mode controller and function i3c: svc: Add svc-i3c-main.c and svc-i3c.h i3c: target: add svc target controller support i3c: target: func: add tty driver i3c: add API i3c_dev_gettstatus_format1() to get target device status tty: i3c: add TTY over I3C master support .../bindings/i3c/silvaco,i3c-master.yaml | 11 +- Documentation/driver-api/i3c/index.rst | 1 + .../driver-api/i3c/target/i3c-target-cfs.rst | 109 +++ .../driver-api/i3c/target/i3c-target.rst | 189 +++++ .../driver-api/i3c/target/i3c-tty-howto.rst | 109 +++ Documentation/driver-api/i3c/target/index.rst | 13 + drivers/i3c/Kconfig | 31 +- drivers/i3c/Makefile | 3 + drivers/i3c/device.c | 24 + drivers/i3c/func/Kconfig | 9 + drivers/i3c/func/Makefile | 3 + drivers/i3c/func/tty.c | 474 +++++++++++ drivers/i3c/i3c-cfs.c | 389 +++++++++ drivers/i3c/internals.h | 1 + drivers/i3c/master.c | 26 + drivers/i3c/master/Makefile | 3 +- drivers/i3c/master/svc-i3c-main.c | 80 ++ drivers/i3c/master/svc-i3c-master.c | 34 +- drivers/i3c/master/svc-i3c-target.c | 776 ++++++++++++++++++ drivers/i3c/master/svc-i3c.h | 15 + drivers/i3c/target.c | 453 ++++++++++ drivers/tty/Kconfig | 13 + drivers/tty/Makefile | 1 + drivers/tty/i3c_tty.c | 427 ++++++++++ include/linux/i3c/device.h | 1 + include/linux/i3c/target.h | 548 +++++++++++++ 26 files changed, 3712 insertions(+), 31 deletions(-) create mode 100644 Documentation/driver-api/i3c/target/i3c-target-cfs.rst create mode 100644 Documentation/driver-api/i3c/target/i3c-target.rst create mode 100644 Documentation/driver-api/i3c/target/i3c-tty-howto.rst create mode 100644 Documentation/driver-api/i3c/target/index.rst create mode 100644 drivers/i3c/func/Kconfig create mode 100644 drivers/i3c/func/Makefile create mode 100644 drivers/i3c/func/tty.c create mode 100644 drivers/i3c/i3c-cfs.c create mode 100644 drivers/i3c/master/svc-i3c-main.c create mode 100644 drivers/i3c/master/svc-i3c-target.c create mode 100644 drivers/i3c/master/svc-i3c.h create mode 100644 drivers/i3c/target.c create mode 100644 drivers/tty/i3c_tty.c create mode 100644 include/linux/i3c/target.h