From patchwork Tue Jan 23 23:10:42 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Frank Li X-Patchwork-Id: 765554 Received: from EUR05-VI1-obe.outbound.protection.outlook.com (mail-vi1eur05on2084.outbound.protection.outlook.com [40.107.21.84]) (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 194D65B5A4; Tue, 23 Jan 2024 23:11:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.21.84 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706051492; cv=fail; b=fu59QGUjqFi1qlWvZE9GP3SSn5DRh1nisAjg7bi8ZdzsO2eg9xybLcpL5hmdty+VNpfhnvxv4RVuFkiOhmN3ci5L+UvsfeMVkzGzUBpdw8qeqAHgAPX2CMMghtb1191SGjcrRcsyhFRaZZElalqLPIILVWz66XTsaU84tjDk04E= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1706051492; c=relaxed/simple; bh=qW3xZSPxV69HhCqaxH4lMTpKrUoMPbR7IONE/5QS6Vk=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: Content-Type:MIME-Version; b=cM8KMycpCrflgQ6YJXH4Q9slPuhqHx1LUIMnaWiIfmrgeeslq0AAhR3Ij2eT1eISAySooMa2HKGR5CjInLwjND/0rys4mkK5AHfHTlgNDRW20jhgZQaGZaQ0OQ/1U5xC+IgQSnLOPD6pO/HLhtGXEANn45TTz5IxM9ThbSUlzxI= 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=o6djDPLc; arc=fail smtp.client-ip=40.107.21.84 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="o6djDPLc" ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=JvCyuhp1M6Fpl6z3ERyyy+J2fuVttXt/I8f/dNJ9U9nx3Rsa1NJPetXpzU35NShltkgD0gHyxcoTcQFUvQmEqnUXduGBpuYM0/HkCZ9pbEjb2+CC6kNEcMOFXxtxKBNZBajewUIDoap8ChrUvsVpd8Ut9sInn2W5FvMxvlBOEIGdIcYxMQN3ZO28jwzc76ct8PG8qPcqFpNLHY4v4hc7cagAGjp2zK8+91//eka1Dxv9V6BFeanvpWhFEG6W5kHtZBFqfw9XTkRfhyMcU/TlMdI/LU5aN2GNeRPvN80rqzpQ7FDKy5X3wcMBV654WcNi4D6ysH6BfE328pm/zdIo2g== 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=gGplKMk66GaTweVFF4futDGQXoLj3fNk9Gx8JTRiLvAnjNq6AabCa5ae+3uPm7R+2+/2dB/f8AVluKNGT+vmtxA56d8EZED3xQUFN5BchDUHBBWkxdK3SbMzNSvX7Q/o/KMQivlHsKI5ys7AN9keGrMoujNKCMsS8jKqdxrAXUM00cp5CVToHyp8n7jDCh0CXd5K1gFOpiVdodwPlbmOqANhCLwGSdMPIb8J7BaKcr1bA0zIxqTxv3CLgqQGE70OvbeDBtlcjxX72BZMSv7PNDDUjw3hN6dwicAm890a6KjVh8PyltU9qkVg+ahtgBiSsDiu/QKue4JPiIEDaVn/iw== 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=o6djDPLcg3Iy+MZV6n+rXtSxmQcr5SKNpH4+AR1MOgqxfIZoDetIje3QswF7f57V40hKy6vFldcCKf93hcDuBvzA948oD2OUd3fszcpWzkr7tFVTDyg75hLqNKFUiGodevHYehnEo4JW0tAqa6qLAIGP9NChEpwLRAE2OAj+0xE= 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 DB9PR04MB9475.eurprd04.prod.outlook.com (2603:10a6:10:367::18) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7202.32; Tue, 23 Jan 2024 23:11:28 +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 15.20.7202.035; Tue, 23 Jan 2024 23:11:27 +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, 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 v4 7/8] i3c: add API i3c_dev_gettstatus_format1() to get target device status Date: Tue, 23 Jan 2024 18:10:42 -0500 Message-Id: <20240123231043.3891847-8-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240123231043.3891847-1-Frank.Li@nxp.com> References: <20240123231043.3891847-1-Frank.Li@nxp.com> X-ClientProxiedBy: SJ0PR03CA0371.namprd03.prod.outlook.com (2603:10b6:a03:3a1::16) 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_|DB9PR04MB9475:EE_ X-MS-Office365-Filtering-Correlation-Id: 16094cb2-92e2-44e8-f7fe-08dc1c68a0ab 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)(136003)(376002)(396003)(346002)(366004)(39860400002)(230922051799003)(1800799012)(451199024)(64100799003)(186009)(1076003)(83380400001)(66946007)(2616005)(26005)(6506007)(6512007)(38100700002)(478600001)(2906002)(8676002)(34206002)(8936002)(4326008)(7416002)(37006003)(52116002)(5660300002)(66476007)(6486002)(66556008)(316002)(6666004)(36756003)(38350700005)(86362001)(41300700001); 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: 16094cb2-92e2-44e8-f7fe-08dc1c68a0ab X-MS-Exchange-CrossTenant-AuthSource: PAXPR04MB9642.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Jan 2024 23:11:27.8777 (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: bISyMDA6DxCy9H3LddpE7lLHA+ARrDlZA6RLJdXlw+9EQyxy8mlyFTz4JKcddR40B0ORwnpLyRalwALvOKQm3g== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DB9PR04MB9475 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 */