From patchwork Fri Feb 2 23:09:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 770020 Received: from EUR03-AM7-obe.outbound.protection.outlook.com (mail-am7eur03on2063.outbound.protection.outlook.com [40.107.105.63]) (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 7E945130AE3; Fri, 2 Feb 2024 23:10:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.105.63 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706915414; cv=fail; b=A5JB7VWaEFfb5wAmMpWlhqFFAiT4wZtBv2fY3XRyRwudK1NaZVtVlu4/BYrSmN2wclQS0Ku0GKpVQEFfgOkD90GQjmwNXcRSIOLCQSRaNN7lUNPrEHoXgWswo6WQsirU89MbB7Eo9WshManSkBXDaAj6dqKTOOS4n5TZqio0fMA= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706915414; c=relaxed/simple; bh=qW3xZSPxV69HhCqaxH4lMTpKrUoMPbR7IONE/5QS6Vk=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: Content-Type:MIME-Version; b=kKJb5JcKOU+1wOxZRgQuyng+b9AQ13WT7wJ6fIpA9YwFD3yhZQ0323mZibJD5MZX809/M+OXzFd1bal/ihNU1BIeypnR9Q8XUY62z7RlFuRj6cEOUdbPvi2Dx7kuYyPhqFvTAKa+oi/TO4bbY9ceD6rs7afIb+QKQZDczv7J7iQ= 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=nB4dbEqD; arc=fail smtp.client-ip=40.107.105.63 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="nB4dbEqD" ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=eN0NGlZc1Hp/J0dycMWIse7QcCs7pa1B1hfoeCtKvlLkTZTRrxjW6kPqo7iq4qKu21cuuAjDXBPt8qhQxAyMHuBBI9JHoVGSs1v2QZfLaiQ0i9zaGqkeIZ9jWLy/szr0WMIu2GkVfqUTB2URgn+rmByGTfUG/OniQunojRvAYSAS6BXFAir5mQlyCWUrXhYDfI2YBL006EBi9dkSyvXq9j5EaBbB4gKKFk4s/6xHdfHRiy5JzmMN3dJaUR98mKsuA3baWBYzgBMI6W3N52IfpSMuukrWDH42OhqVuN9FtyGRbOLWTFhvg35GiKcvxU5Z7EMeVjy5zYxnZusxSoaFLg== 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=m6ARtUV31Aw0WkrJm4RAXeC+QYXs6+F2YjWwVs9OYOM=; b=k98gRmZlhyljDzrYxpkAq3jBPU7ByZSL0WHIhR8AixIy1IJQOcvVsFz+uoRC4BFAt4xAwTOtzen2alErnjHZRWjMPoh5al8xQjnAIL8PSk46MuGMJiX9HhoYzlXEbg67hyuivUdWtF3RQV/zqerw/FLLduRsR7IrCuUb/bdLQwLcpakotXk1ULJUM4BCIwqgPv9uc4jVTOWPiYtVNgFC4s0+0PpsilmC97lDnw7JYViFbq5kdOIH92IPLgg0AE5yXKr/YN7MBcm85frLCknnRePfeKomyYUstsVAGUrQdzkvwrACl7B1BZjrxA7BRD63HIos59iGJZELtwvMOrON5g== 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=m6ARtUV31Aw0WkrJm4RAXeC+QYXs6+F2YjWwVs9OYOM=; b=nB4dbEqDqMefBXvKfRGM5jH7ZIoH84lTKdlLPlPPgAT3EbDH6gGBxa0H8di1CLQcqf7oEK5k49msJe62oKMnhh6F/ZzbuKjj9y7ysJsZ7Aj6gzyeSMCT7PSXfrtAEy5MeuUdq0G/crtsvgAExZrTdLnYClGWBMjTKC34jK21/WY= 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 23:10:11 +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 23:10:11 +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 7/8] i3c: add API i3c_dev_gettstatus_format1() to get target device status Date: Fri, 2 Feb 2024 18:09:24 -0500 Message-Id: <20240202230925.1000659-8-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240202230925.1000659-1-Frank.Li@nxp.com> References: <20240202230925.1000659-1-Frank.Li@nxp.com> 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: linux-serial@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: ad6f4271-3085-43f5-5927-08dc24441b31 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)(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: ad6f4271-3085-43f5-5927-08dc24441b31 X-MS-Exchange-CrossTenant-AuthSource: PAXPR04MB9642.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 02 Feb 2024 23:10:11.3474 (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: 5tOYJRThW4Bo2fWvgfEDRQECels9yMEb9lG4DmLQcDXQuu7yCKtIfaIgKvGzSoEcZKpojm/d3EVpZmdNhyWv/A== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS5PR04MB9997 I3C standard 5.1.9.3.15 Get Device Status (GETSTATUS): Get request for one I3C Target Device to return its current status. Add API to fetch it with format1. Signed-off-by: Frank Li --- drivers/i3c/device.c | 24 ++++++++++++++++++++++++ drivers/i3c/internals.h | 1 + drivers/i3c/master.c | 26 ++++++++++++++++++++++++++ include/linux/i3c/device.h | 1 + 4 files changed, 52 insertions(+) diff --git a/drivers/i3c/device.c b/drivers/i3c/device.c index 1a6a8703dbc3a..aa26cf50ab9c6 100644 --- a/drivers/i3c/device.c +++ b/drivers/i3c/device.c @@ -196,6 +196,30 @@ void i3c_device_free_ibi(struct i3c_device *dev) } EXPORT_SYMBOL_GPL(i3c_device_free_ibi); +/** + * i3c_device_getstatus_format1() - Get device status with format 1. + * @dev: device for which you want to get status. + * @status: I3C status format 1 + * + * Return: 0 in case of success, a negative error core otherwise. + */ +int i3c_device_getstatus_format1(struct i3c_device *dev, u16 *status) +{ + int ret = -EINVAL; + + if (!status) + return -EINVAL; + + i3c_bus_normaluse_lock(dev->bus); + if (dev->desc) + ret = i3c_dev_getstatus_format1_locked(dev->desc, status); + + i3c_bus_normaluse_unlock(dev->bus); + + return ret; +} +EXPORT_SYMBOL_GPL(i3c_device_getstatus_format1); + /** * i3cdev_to_dev() - Returns the device embedded in @i3cdev * @i3cdev: I3C device diff --git a/drivers/i3c/internals.h b/drivers/i3c/internals.h index 908a807badaf9..976ad26ca79c2 100644 --- a/drivers/i3c/internals.h +++ b/drivers/i3c/internals.h @@ -24,4 +24,5 @@ int i3c_dev_enable_ibi_locked(struct i3c_dev_desc *dev); int i3c_dev_request_ibi_locked(struct i3c_dev_desc *dev, const struct i3c_ibi_setup *req); void i3c_dev_free_ibi_locked(struct i3c_dev_desc *dev); +int i3c_dev_getstatus_format1_locked(struct i3c_dev_desc *dev, u16 *status); #endif /* I3C_INTERNAL_H */ diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c index 3afa530c5e322..ff61a218bcc6d 100644 --- a/drivers/i3c/master.c +++ b/drivers/i3c/master.c @@ -2988,6 +2988,32 @@ void i3c_dev_free_ibi_locked(struct i3c_dev_desc *dev) dev->ibi = NULL; } +int i3c_dev_getstatus_format1_locked(struct i3c_dev_desc *dev, u16 *status) +{ + struct i3c_master_controller *master = i3c_dev_get_master(dev); + struct i3c_ccc_getstatus *format1; + struct i3c_ccc_cmd_dest dest; + struct i3c_ccc_cmd cmd; + int ret; + + format1 = i3c_ccc_cmd_dest_init(&dest, dev->info.dyn_addr, sizeof(*format1)); + if (!format1) + return -ENOMEM; + + i3c_ccc_cmd_init(&cmd, true, I3C_CCC_GETSTATUS, &dest, 1); + + ret = i3c_master_send_ccc_cmd_locked(master, &cmd); + if (ret) + goto out; + + *status = be16_to_cpu(format1->status); + +out: + i3c_ccc_cmd_dest_cleanup(&dest); + + return ret; +} + static int __init i3c_init(void) { int res; diff --git a/include/linux/i3c/device.h b/include/linux/i3c/device.h index e119f11948efe..66920045ff042 100644 --- a/include/linux/i3c/device.h +++ b/include/linux/i3c/device.h @@ -345,4 +345,5 @@ void i3c_device_free_ibi(struct i3c_device *dev); int i3c_device_enable_ibi(struct i3c_device *dev); int i3c_device_disable_ibi(struct i3c_device *dev); +int i3c_device_getstatus_format1(struct i3c_device *dev, u16 *status); #endif /* I3C_DEV_H */