From patchwork Thu Aug 15 15:25:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Shen Jianping (ME-SE/EAD2)" X-Patchwork-Id: 13764950 Received: from EUR05-VI1-obe.outbound.protection.outlook.com (mail-vi1eur05on2087.outbound.protection.outlook.com [40.107.21.87]) (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 14AE81A76B7; Thu, 15 Aug 2024 15:26:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.21.87 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723735587; cv=fail; b=mABCjAlWrOohC1tmC8af158tUS0FOD1d86ZyrOBMt/LdibnDqX29qyeEkbhob6gMEYs1ktGVCOKB313c+6m4Rp5eXwZu9Q9cd8tQMLPqK5ltr2RuX4xJcJm97Rur3aFhLHIc4k9HumFMptGXAfu9tOnxQ9t/2GpyQmbJeVQKa+g= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723735587; c=relaxed/simple; bh=0TOaM5HJ7DgBFJ6iHuhvU7IpEaEwtwybrvrqvRafUAA=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=rzhXaaO9kB+a+8/TvtOjkoU4eVkK/lyS9aWXO3xXuN6wJ1RvvFkJ939NpafJYY525R/lu2d4QecbW8a2/MmeFjAsY0ziJqh7td6rSEkJinUEZXUMmtzawhC579ob0oxTrZUXuPyXrJyPKT5Z+LGFSqXKhVzeECALV9NFw4LXaqM= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=de.bosch.com; spf=pass smtp.mailfrom=de.bosch.com; dkim=pass (2048-bit key) header.d=de.bosch.com header.i=@de.bosch.com header.b=e3gwgMGw; arc=fail smtp.client-ip=40.107.21.87 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=de.bosch.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=de.bosch.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=de.bosch.com header.i=@de.bosch.com header.b="e3gwgMGw" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=Zu+Bx2fz99Ahacn8FT8422EAVXH/ZrRwrWFBrbGli80K/XpkL2MhlGSpXgfpu6N0za8WlMAOYRcav11Jpe6D+KBh1OvioPVPLuAVWkomlecnECP7pMPXNgZG1aIQxkn8bUvGoVYOT1A6hnfc82ucbf2jZegrqbfyR/KENJuLGCgWlwPD2qeZDupi/ZnSIMkF19LcN8a5UR8Hyd3dh+VCgqDZiSSUD5vVs7BPYRRKpAPjMh/hktg2LDZzkX0XePB7GpdQJej2fCex+azGSSTPZBuL/x9Ix+puT0DDyvztx6QshGbdIUNP4qq1yNll47l622r1ZCQWlcGQkcQSb/R9iA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=mjUnBqheD2L7Xxk3dtPkVxYoKpFGiKz2TY08P/WNjj0=; b=Uz3wLRAkjpjS6qYLXnHruF1OteX9vZA3Y7JhDWA6CQk+MXscXgqng8oCZ+0q5e0X3fjQUc7QfeWF1yk/EXlZM47JLrSR5s6sOsY4KPvkM/C8lOHBJRt2SMJqS0lb28vcfjJVfjlT5I/NS9H50Lu7M/8rXsw7HqDT1YP0O5yR+BaHqGL7HMOxgHr1SNmty3vo2tIlTIePEH/F5v4CQUAEUxxY2+qTPN5wB7uFOZFuzwGhJlw8MSv8oUHqEZOFSZa37JxX+yAaitubprDcEpdLoeXG1WzDqlScdqkWw9FQ5ti3F1/jJc+bPD8TJXX02A+/BIIal/UMENKx5Lbt5Bb3tQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 139.15.153.206) smtp.rcpttodomain=kernel.org smtp.mailfrom=de.bosch.com; dmarc=pass (p=reject sp=none pct=100) action=none header.from=de.bosch.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=de.bosch.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=mjUnBqheD2L7Xxk3dtPkVxYoKpFGiKz2TY08P/WNjj0=; b=e3gwgMGwL3QBh1099ON6Ev/4xto3zrhCGMpLgBG73w+jHfGBC+sV8tXdOA8TMPn+8Kz7QrpyreRAllRYZhXURiJS+NVgwRDsQNeMeTCA5ODLWCOW2aH0910tS7avyTSoVAETfRUNOKxcCfCReFdsmHEwW++pN1Rt+3cpcZFsmQ3XBhp7RdIXWSq+YjKa3f8XXMRfPT8WVfiUl55MWy3Q1J28IlWqmrf2tuEZYPYL4+u4Ra1yBxj/MI2+k0HNKMIKiDsJ6H5ZlGNYT+PEDDoKKVPLnNgsFGs/02s69AhMKycXbceM2eJVLPcidT+nz6to6BNpRpjkfGBpSJbMus37Xw== Received: from AS4P191CA0026.EURP191.PROD.OUTLOOK.COM (2603:10a6:20b:5d9::17) by AS8PR10MB6390.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:20b:56f::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7849.22; Thu, 15 Aug 2024 15:26:21 +0000 Received: from AMS1EPF00000048.eurprd04.prod.outlook.com (2603:10a6:20b:5d9:cafe::15) by AS4P191CA0026.outlook.office365.com (2603:10a6:20b:5d9::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7875.19 via Frontend Transport; Thu, 15 Aug 2024 15:26:21 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 139.15.153.206) smtp.mailfrom=de.bosch.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=de.bosch.com; Received-SPF: Pass (protection.outlook.com: domain of de.bosch.com designates 139.15.153.206 as permitted sender) receiver=protection.outlook.com; client-ip=139.15.153.206; helo=eop.bosch-org.com; pr=C Received: from eop.bosch-org.com (139.15.153.206) by AMS1EPF00000048.mail.protection.outlook.com (10.167.16.132) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7849.8 via Frontend Transport; Thu, 15 Aug 2024 15:26:21 +0000 Received: from SI-EXCAS2000.de.bosch.com (10.139.217.201) by eop.bosch-org.com (139.15.153.206) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 15 Aug 2024 17:26:05 +0200 Received: from LR-C-0008DVM.rt.de.bosch.com (10.139.217.196) by SI-EXCAS2000.de.bosch.com (10.139.217.201) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Thu, 15 Aug 2024 17:26:05 +0200 From: To: , , , , , , , , , , , , , Subject: [PATCH v3 1/2] dt-bindings: iio: imu: smi240: devicetree binding Date: Thu, 15 Aug 2024 17:25:44 +0200 Message-ID: <20240815152545.7705-2-Jianping.Shen@de.bosch.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240815152545.7705-1-Jianping.Shen@de.bosch.com> References: <20240815152545.7705-1-Jianping.Shen@de.bosch.com> Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AMS1EPF00000048:EE_|AS8PR10MB6390:EE_ X-MS-Office365-Filtering-Correlation-Id: 77b040a2-dd48-40e4-5f77-08dcbd3e9dba X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|7416014|36860700013|82310400026|1800799024|376014|921020; X-Microsoft-Antispam-Message-Info: =?utf-8?q?I7WgzlJ8K9acRr5TL41ua89dG+DD6Hs?= =?utf-8?q?2f8ljf8iFx6402cFW+UTYoL+gqsiZoXowxKUJL5//RzEjhtMXvY50kIQ04BQWRqSq?= =?utf-8?q?qS/3911rvuANfgaxStIHZxs++7uZWDfaTk8K0OyjzaOAQDzJu64iLW0TxbhJh3IST?= =?utf-8?q?MBR7El4o3spcgbsIfWd8t3/CalKfNNXjSOJWpA1jd6Vrwr2RkyP2OGTl366DnzuD6?= =?utf-8?q?S38RBSlgU5GfHgnOJhqgnOA9xipHEhVKsCDsfkY9EhSiXIXJ13h9CUGaX0wn2JLxl?= =?utf-8?q?VFg1Hbj9NiQvRsqc5YQagMGIk1qvpiBeTEN9GPLP6uC+Yqq0h6cp483jG6PGvPFLl?= =?utf-8?q?Y8+jpyXqPcbEOLm6SfMTTFIItZK6ddGSY4Qw5d4icnU3ieJ7m/mYrW6BYFTqcxnQm?= =?utf-8?q?zLcG8Ita9TbVVpCWqpMrAIZ0Fo68mYc27LAzU715kzohM2NoSDqtqBN49tKbs09hy?= =?utf-8?q?zxekTZC+1ZpRnKJ2SPlgENgtUJTwhq5YvxM8ySqI3C+VXS7SPfQi+hvGG4zFogIUX?= =?utf-8?q?w8cHnYExTN9F0mduxcq2Uvt3T8z1FZxTbBhTH/E8Ut6NV0aU8BENAhkJ2rkUOw3Jt?= =?utf-8?q?dBxx9MTB1o4vxycpI+WmT8KB6RHa500sI11mLhmpF92HSZSiKgDX+tbE4jwLKdQab?= =?utf-8?q?edlk+I/Zb5uV3SfmXpG74Bhe7hVtfIMsUmzvS6400+rYdlL1FgqHeU/U27fjJ+FpD?= =?utf-8?q?iCKIJvpcIjDgyzvZyTO4yCph6IPgmvi8wT0F3sgfrapw6IpaPYZ1TDno5bE4jj3VR?= =?utf-8?q?YuxT5mc8+Pd+bS5/txbEMPBi3hUntK50GyEGsqFSDbHRR1Kkn9PbMkh6BAN2dvZsd?= =?utf-8?q?+4Z85Ng6z08860gbSq4+iiUDpWry9ouyX+wSFQK7rfr5lCI4YAmZTmKAMT+0wHNIN?= =?utf-8?q?eoj93RWOusrktlgCOGXomuIK4fywAScYSao7KhiajkTKlcpjE6WNVxY8/2CGnyTQp?= =?utf-8?q?DYV7WYITli7lc21MA8crUxtMLGvDfxPJptKOSNJdStsZljUs+qt2tugk5Qeno8kH2?= =?utf-8?q?FJKpFPDvyk0RWC2qKDl3wlTwGe8ZPRdB72PAITlvCQl0gdKkjBs8fHcgVhmk4hqPr?= =?utf-8?q?oiwdVYPXmSvuhhhyvhzVUDZb+8QITlV5OR4XsP5Ms8XWxHcKCOX6qcYwdqrTIv4uO?= =?utf-8?q?OgmMWnWGVMBbGrTydZrI5ttSk5ACYUALnjPwXHv3zFDoczevEOlG1eqhH5AJl7wPB?= =?utf-8?q?KpBggoMniPyQybXSbUQUr5sJl3HMojxFAfDVLSZrLQSLoRmi0Fpw1M7JhVaGxkYDB?= =?utf-8?q?NuZe+TCjjGYu72xy6VHeNLRjo29XB0a6EEECUL31PvF9rqQiACkq+wkLqQ81v6Yqv?= =?utf-8?q?Z9lxShay135NDmHr3hDASAZojTe01M4FSw=3D=3D?= X-Forefront-Antispam-Report: CIP:139.15.153.206;CTRY:DE;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:eop.bosch-org.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(7416014)(36860700013)(82310400026)(1800799024)(376014)(921020);DIR:OUT;SFP:1101; X-OriginatorOrg: de.bosch.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Aug 2024 15:26:21.1001 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 77b040a2-dd48-40e4-5f77-08dcbd3e9dba X-MS-Exchange-CrossTenant-Id: 0ae51e19-07c8-4e4b-bb6d-648ee58410f4 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=0ae51e19-07c8-4e4b-bb6d-648ee58410f4;Ip=[139.15.153.206];Helo=[eop.bosch-org.com] X-MS-Exchange-CrossTenant-AuthSource: AMS1EPF00000048.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: AS8PR10MB6390 From: Shen Jianping dt-bindings: iio: imu: smi240: add sensor dt-binding Signed-off-by: Shen Jianping Reviewed-by: Conor Dooley --- Notes: v1 -> v2 - Add more detail in description - Add maintainer - Add vdd and vddio power supply - Use generic node name - Order the properties according to DTS coding style v2 -> v3 - improve description - improve supply definition - make supply definition as required - add supply definition in example .../bindings/iio/imu/bosch,smi240.yaml | 52 +++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/imu/bosch,smi240.yaml diff --git a/Documentation/devicetree/bindings/iio/imu/bosch,smi240.yaml b/Documentation/devicetree/bindings/iio/imu/bosch,smi240.yaml new file mode 100644 index 00000000000..6f1fb4b892c --- /dev/null +++ b/Documentation/devicetree/bindings/iio/imu/bosch,smi240.yaml @@ -0,0 +1,52 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/imu/bosch,smi240.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Bosch smi240 imu + +maintainers: + - Jianping Shen + +description: + The smi240 is a combined three axis angular rate and three + axis acceleration sensor module with a measurement range of + +/-300°/s and up to 16g. + https://www.bosch-semiconductors.com/mems-sensors/highly-automated-driving/smi240/ + +properties: + compatible: + const: bosch,smi240 + + reg: + maxItems: 1 + + vdd-supply: true + vddio-supply: true + +required: + - compatible + - reg + - vdd-supply + - vddio-supply + +allOf: + - $ref: /schemas/spi/spi-peripheral-props.yaml# + +unevaluatedProperties: false + +examples: + - | + spi { + #address-cells = <1>; + #size-cells = <0>; + + imu@0 { + compatible = "bosch,smi240"; + reg = <0>; + vdd-supply = <&vdd>; + vddio-supply = <&vddio>; + spi-max-frequency = <10000000>; + }; + }; From patchwork Thu Aug 15 15:25:45 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Shen Jianping (ME-SE/EAD2)" X-Patchwork-Id: 13764951 Received: from EUR05-AM6-obe.outbound.protection.outlook.com (mail-am6eur05on2062.outbound.protection.outlook.com [40.107.22.62]) (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 635D21AD404; Thu, 15 Aug 2024 15:26:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.22.62 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723735589; cv=fail; b=SGmkfgntyjC285Pen1vBEw05Y8Kv0BiSe/tpN8OS1f8olZBCmlg01QATElrb8GT3OMtOOOB2a5hdvE7FfjXOzo6RvGySpfKPkB0pMU7D6hlPFbvRDPhkjOjxeXuqQswWG5jEvXCDVvoPp5AQhTc8ph1je2Jz43RLbyW0EvMB2wo= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723735589; c=relaxed/simple; bh=bkyuehGBR2GCSWejwgpoUYQAB3sFEW9x1BkQXucCZvU=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=YchYe59XfR3eLVjAg3Pc4g+qOBgWvfOVZnr1LDuNEC2KSRHvCa5FPlD39yOEdSHAGF48ll28D6UfLOC5U/+ibzkGEkMUhLk/Xm+doHiqc9JdOXAyPB+tsGV8KsHYR9kma2xwbkN72V0DdxUUJrzVwqyVBAUdfUggSWpwuxCdYqA= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=de.bosch.com; spf=pass smtp.mailfrom=de.bosch.com; dkim=pass (2048-bit key) header.d=de.bosch.com header.i=@de.bosch.com header.b=sAxAqJ/7; arc=fail smtp.client-ip=40.107.22.62 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=de.bosch.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=de.bosch.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=de.bosch.com header.i=@de.bosch.com header.b="sAxAqJ/7" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=c0YHH9w5fZyEyeNYWcoU5M0c1sZ4s4c6BTxc7C40rH/4XNe1ZYSq7rYteLb+ipzIoPFi6py3BpMm5CM0pJ9pnqyGw4ZgQ+DFqPwrIrobZMIVpi+QTL/RnojPyW2Orcn5js9D2k19bsQcX2VhwvflEdYXXTbRmyt2zjAbvxeAR8uX4h47GUbR61tTJf+1luuscRiQPDKc8Bycbv9J5KcXcuqM0ytn6BnLENwO/eo8wdRQYCP58HmOyrhGkqwIpHu1XWiwKMDJ3a2xew/BhrQobCpmpOjW0vuqRFnPGsaI59nAmy3WENKCvMKymmY4vloodyUxihxzAelbyU1CMIwXcA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; 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=OZbMVsypu3Ga4HYmDE0zQU3ZuROc/CSfKX/IyJZPMqg=; b=Aoq1UbmiksTsUd2/peh/qG6xZoVD22pn3q1wogcmi/ja6cgoATRubrBIYYRflezIeFHnwMkTixUluWrVH06JopI8AT72OIvfpEvAUOuksulVNr+XwiGcS/FyZh62OCiVkm/uflA4/t8ZjNai+KsfuFlGayxpL1M3g57WMbqUygtj6mKDnXOkEG8+d2bsb8Y8w+iWxVsPEyunMsHL4uiUJLSbwtHTfGYwKPgUzKC1cgAlnnBQOoxjmxzvRr8xOzrPt/lgGK2AIMdD+Z86lC1z8FmuCJ89u88rpp0sJBlaR8AqGJFP/uyUqEEvPbEZQ35Ew5QgjAki2h8YGR6S81XwLQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 139.15.153.205) smtp.rcpttodomain=kernel.org smtp.mailfrom=de.bosch.com; dmarc=pass (p=reject sp=none pct=100) action=none header.from=de.bosch.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=de.bosch.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=OZbMVsypu3Ga4HYmDE0zQU3ZuROc/CSfKX/IyJZPMqg=; b=sAxAqJ/77n7YzovcThk1MnE2UBiFH5V6J1iHk3Q5C/vXy6pNHOO04pN5Amtq+Apq7sUYZwffNN3LkSVnwlOMUMRg41BCu7O8Gyxsq9Zy/ZUTxbHzCerr4DlNymYpT9SkXyzOwJuQgwhI/C/I0FQ0/w9JWT2hzlsPYLj4t5Yd+nHm6FFzUDtVW10wMtMQMUavcnpxYcpEVpk21b2e8tJatRsDHadf2BaTd4J+LUmwH5D4M89f+f47bAf25xFWK/skEgO/wokrxSkoSWCnRTHB8a4vLwPI9YhRJ6zYsvcAY9MSbyqdAwvPZvb0n1aLpy/p3fT8aYVRaE3JSYwZ/KBD5w== Received: from DB7PR05CA0051.eurprd05.prod.outlook.com (2603:10a6:10:2e::28) by DU0PR10MB7460.EURPRD10.PROD.OUTLOOK.COM (2603:10a6:10:425::5) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7875.17; Thu, 15 Aug 2024 15:26:19 +0000 Received: from DB5PEPF00014B98.eurprd02.prod.outlook.com (2603:10a6:10:2e:cafe::fd) by DB7PR05CA0051.outlook.office365.com (2603:10a6:10:2e::28) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7875.19 via Frontend Transport; Thu, 15 Aug 2024 15:26:19 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 139.15.153.205) smtp.mailfrom=de.bosch.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=de.bosch.com; Received-SPF: Pass (protection.outlook.com: domain of de.bosch.com designates 139.15.153.205 as permitted sender) receiver=protection.outlook.com; client-ip=139.15.153.205; helo=eop.bosch-org.com; pr=C Received: from eop.bosch-org.com (139.15.153.205) by DB5PEPF00014B98.mail.protection.outlook.com (10.167.8.165) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7849.8 via Frontend Transport; Thu, 15 Aug 2024 15:26:19 +0000 Received: from SI-EXCAS2000.de.bosch.com (10.139.217.201) by eop.bosch-org.com (139.15.153.205) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Thu, 15 Aug 2024 17:26:05 +0200 Received: from LR-C-0008DVM.rt.de.bosch.com (10.139.217.196) by SI-EXCAS2000.de.bosch.com (10.139.217.201) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Thu, 15 Aug 2024 17:26:05 +0200 From: To: , , , , , , , , , , , , , Subject: [PATCH v3 2/2] iio: imu: smi240: imu driver Date: Thu, 15 Aug 2024 17:25:45 +0200 Message-ID: <20240815152545.7705-3-Jianping.Shen@de.bosch.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240815152545.7705-1-Jianping.Shen@de.bosch.com> References: <20240815152545.7705-1-Jianping.Shen@de.bosch.com> Precedence: bulk X-Mailing-List: linux-iio@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DB5PEPF00014B98:EE_|DU0PR10MB7460:EE_ X-MS-Office365-Filtering-Correlation-Id: 63d21226-4f41-45fd-7dc0-08dcbd3e9cff X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|376014|36860700013|7416014|1800799024|921020; X-Microsoft-Antispam-Message-Info: =?utf-8?q?NEf6R9ShSB5YrrDMsVEKf3EuC66UGyj?= =?utf-8?q?2RGOSaF4ebKN2yu5eZHfiVZZGfbkQrFwSF3WXGH/IAQ4djKcjGdz/m6TlPb2u/CVL?= =?utf-8?q?bBITFJ4Nq/ePPzMd9xZGJeyjFi78vz4nm5r8FlZardKHzFR+MV0XghwO5IT5cAZzj?= =?utf-8?q?qNuX7yhXhA/op3YRrwFP2lvBrHTmqv50tmuGx+h0YoRZTjTun6B5odt0k+2aWhkTB?= =?utf-8?q?Fno8KaXyOd2oGi1PWvn5+C+XyANJUjrZ5+0o/ERrfrRaG0+FPXUWq6VX/q2pAVnmq?= =?utf-8?q?q7oeLOzwWRfhgr8kTcgyoYPJ5KTj/AZjhuLdTbH1Wj/dfa8zNzHY4uwPzEkHL3Lx/?= =?utf-8?q?ZijOyEyiwZuz+cyn2UkEfCVXyiqACKfgRZMGTA1myFxcJo23jLTY+ubSKnDIVMMAN?= =?utf-8?q?zMYsdHPh8ymMy/7Vx1BG4qu3YgWGl499FsWOpGv+zKiD4ykrECHc3queXJrbrpmqA?= =?utf-8?q?3lZbVRFGJxvnbno2lJKar5R0h5KqIbh6VgkVs4rAVwquBbGBpR6h6dkDaMmOgqTRF?= =?utf-8?q?9oTZrfgAYsWCbZc7J05uqLZJtFeRP1z/cv12AagNou3o8NV7DcQlayq1H/ryV03Lq?= =?utf-8?q?6n9f8qOXc1AHrCD3cBIkj/j23QE41vKbUittIx7lLjx/NTC11cJyFmvyvXD+gLZQn?= =?utf-8?q?282PraH91c84P1YA2c2Nh86EZ+oeIWsuvjn0kaOvQhXdN4TBL7o4xn/i4mO9dXWCx?= =?utf-8?q?2lFR1KEbdTWqqd1HTWPGf/2osrSkE1T6o8rq3oC8/kntEIcFXVp7/ttBwMB/jq5NM?= =?utf-8?q?ioSoDhciRzTdPtR3yS85p1cQ7DyHmq3j3jySmxL/LVy4IPNd+YewYalmC3fHi5VYj?= =?utf-8?q?PlLgIRjc3m5eVdAvXWPGjA9o8A28XHSBVi8hIF8t7ODM3aPN9o2ldtN+R64uYrwtJ?= =?utf-8?q?6sqAVL/PRJQ/ObmZpLl0e2bj+g4e/1KCZH+tQzI5xRx11/qWGjpsHckK/ahmUpXmb?= =?utf-8?q?3eiDwyGz6KWvW31RPHI23xnCnRhz2AGP80IAAY0NQQ6+IC/+p2acWiWvRwsbfaCwc?= =?utf-8?q?8X/hnZV8Dtz106v2POlcjBZU8dB+gcMgyE914l9eohrAtWg+UE5jPmA4IXDlRkGSJ?= =?utf-8?q?fKsiUHBiNOAh8p5pYGJEKh9jhJgRfiYa3G17qbkA1Rx9TKlKEFwpERRxzGWoNnIXK?= =?utf-8?q?WAkmdIXC7zWPUIdtKLa5VhdozeV8Eeyi5q4No9f2jLcKn4a0zCRDZIPjrZ/K9mHyk?= =?utf-8?q?g/4zJe5HDGTm1GWWkuxrRq7kiS4dle+JWQEctCzbZ1s0tT3ACJwpwTcXXdbsPaaBe?= =?utf-8?q?1HwJtznF7IYeeWTgTmFFUGeWW3aTeYipAwRHYe/tLfoDtYE/+vLtMfimDfoeCi5B9?= =?utf-8?q?akk3KMdiYzvWd6igO5fMu6RXi0hI3XYpFEmO10grYzaalKsHOWlXe1ehV699zXtxW?= =?utf-8?q?RvhUXmjkp4qvh5bQpbovNpTK8Jz5txi/Q=3D=3D?= X-Forefront-Antispam-Report: CIP:139.15.153.205;CTRY:DE;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:eop.bosch-org.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230040)(82310400026)(376014)(36860700013)(7416014)(1800799024)(921020);DIR:OUT;SFP:1101; X-OriginatorOrg: de.bosch.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Aug 2024 15:26:19.8441 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 63d21226-4f41-45fd-7dc0-08dcbd3e9cff X-MS-Exchange-CrossTenant-Id: 0ae51e19-07c8-4e4b-bb6d-648ee58410f4 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=0ae51e19-07c8-4e4b-bb6d-648ee58410f4;Ip=[139.15.153.205];Helo=[eop.bosch-org.com] X-MS-Exchange-CrossTenant-AuthSource: DB5PEPF00014B98.eurprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DU0PR10MB7460 From: Shen Jianping iio: imu: smi240: add sensor driver Signed-off-by: Shen Jianping --- Notes: v1 -> v2 - Use regmap for register access - Redefine channel for each singel axis - Provide triggered buffer - Fix findings in Kconfig - Remove unimportant functions v2 -> v3 - Use enum für capture mode - Using spi default init value instead manual init - remove duplicated module declaration - Fix code to avoid warning drivers/iio/imu/Kconfig | 1 + drivers/iio/imu/Makefile | 1 + drivers/iio/imu/smi240/Kconfig | 12 + drivers/iio/imu/smi240/Makefile | 7 + drivers/iio/imu/smi240/smi240.h | 32 +++ drivers/iio/imu/smi240/smi240_core.c | 386 +++++++++++++++++++++++++++ drivers/iio/imu/smi240/smi240_spi.c | 164 ++++++++++++ 7 files changed, 603 insertions(+) create mode 100644 drivers/iio/imu/smi240/Kconfig create mode 100644 drivers/iio/imu/smi240/Makefile create mode 100644 drivers/iio/imu/smi240/smi240.h create mode 100644 drivers/iio/imu/smi240/smi240_core.c create mode 100644 drivers/iio/imu/smi240/smi240_spi.c diff --git a/drivers/iio/imu/Kconfig b/drivers/iio/imu/Kconfig index 52a155ff325..8808074513d 100644 --- a/drivers/iio/imu/Kconfig +++ b/drivers/iio/imu/Kconfig @@ -96,6 +96,7 @@ config KMX61 source "drivers/iio/imu/inv_icm42600/Kconfig" source "drivers/iio/imu/inv_mpu6050/Kconfig" +source "drivers/iio/imu/smi240/Kconfig" source "drivers/iio/imu/st_lsm6dsx/Kconfig" source "drivers/iio/imu/st_lsm9ds0/Kconfig" diff --git a/drivers/iio/imu/Makefile b/drivers/iio/imu/Makefile index 7e2d7d5c3b7..b6f162ae4ed 100644 --- a/drivers/iio/imu/Makefile +++ b/drivers/iio/imu/Makefile @@ -27,5 +27,6 @@ obj-y += inv_mpu6050/ obj-$(CONFIG_KMX61) += kmx61.o +obj-y += smi240/ obj-y += st_lsm6dsx/ obj-y += st_lsm9ds0/ diff --git a/drivers/iio/imu/smi240/Kconfig b/drivers/iio/imu/smi240/Kconfig new file mode 100644 index 00000000000..b7f3598f6c4 --- /dev/null +++ b/drivers/iio/imu/smi240/Kconfig @@ -0,0 +1,12 @@ +config SMI240 + tristate "Bosch Sensor SMI240 Inertial Measurement Unit" + depends on SPI + select REGMAP_SPI + select IIO_BUFFER + select IIO_TRIGGERED_BUFFER + help + If you say yes here you get support for SMI240 IMU on SPI with + accelerometer and gyroscope. + + This driver can also be built as a module. If so, the module will be + called smi240. diff --git a/drivers/iio/imu/smi240/Makefile b/drivers/iio/imu/smi240/Makefile new file mode 100644 index 00000000000..0e5f7db7d78 --- /dev/null +++ b/drivers/iio/imu/smi240/Makefile @@ -0,0 +1,7 @@ +# SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 +# +# Makefile for Bosch SMI240 +# +obj-$(CONFIG_SMI240) += smi240.o +smi240-objs := smi240_core.o +smi240-objs += smi240_spi.o diff --git a/drivers/iio/imu/smi240/smi240.h b/drivers/iio/imu/smi240/smi240.h new file mode 100644 index 00000000000..a165bbd9f0b --- /dev/null +++ b/drivers/iio/imu/smi240/smi240.h @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */ +/* + * Copyright (c) 2024 Robert Bosch GmbH. + * + */ +#ifndef _SMI240_H +#define _SMI240_H + +#include +#include + +enum capture_mode { SMI240_CAPTURE_OFF = 0, SMI240_CAPTURE_ON = 1 }; + +struct smi240_data { + struct regmap *regmap; + u16 accel_filter_freq; + u16 anglvel_filter_freq; + u8 bite_reps; + enum capture_mode capture; + /* + * Ensure natural alignment for timestamp if present. + * Channel size: 2 bytes. + * Max length needed: 2 * 3 channels + temp channel + 2 bytes padding + 8 byte ts. + * If fewer channels are enabled, less space may be needed, as + * long as the timestamp is still aligned to 8 bytes. + */ + s16 buf[12] __aligned(8); +}; + +int smi240_core_probe(struct device *dev, struct regmap *regmap); + +#endif /* _SMI240_H */ diff --git a/drivers/iio/imu/smi240/smi240_core.c b/drivers/iio/imu/smi240/smi240_core.c new file mode 100644 index 00000000000..9e7269b90c9 --- /dev/null +++ b/drivers/iio/imu/smi240/smi240_core.c @@ -0,0 +1,386 @@ +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 +/* + * Copyright (c) 2024 Robert Bosch GmbH. + * + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "smi240.h" + +enum { + SMI240_TEMP_OBJECT, + SMI240_SCAN_ACCEL_X, + SMI240_SCAN_ACCEL_Y, + SMI240_SCAN_ACCEL_Z, + SMI240_SCAN_GYRO_X, + SMI240_SCAN_GYRO_Y, + SMI240_SCAN_GYRO_Z, + SMI240_SCAN_TIMESTAMP, +}; + +#define SMI240_CHIP_ID 0x0024 + +#define SMI240_SOFT_CONFIG_EOC_MASK BIT_MASK(0) +#define SMI240_SOFT_CONFIG_GYR_BW_MASK BIT_MASK(1) +#define SMI240_SOFT_CONFIG_ACC_BW_MASK BIT_MASK(2) +#define SMI240_SOFT_CONFIG_BITE_AUTO_MASK BIT_MASK(3) +#define SMI240_SOFT_CONFIG_BITE_REP_MASK GENMASK(6, 4) + +#define SMI240_CHIP_ID_REG 0x00 +#define SMI240_SOFT_CONFIG_REG 0x0A +#define SMI240_TEMP_CUR_REG 0x10 +#define SMI240_ACCEL_X_CUR_REG 0x11 +#define SMI240_GYRO_X_CUR_REG 0x14 +#define SMI240_DATA_CAP_FIRST_REG 0x17 +#define SMI240_CMD_REG 0x2F + +#define SMI240_SOFT_RESET_CMD 0xB6 + +#define SMI240_BITE_SEQUENCE_DELAY_US 140000 +#define SMI240_FILTER_FLUSH_DELAY_US 60000 +#define SMI240_DIGITAL_STARTUP_DELAY_US 120000 +#define SMI240_MECH_STARTUP_DELAY_US 100000 + +#define SMI240_LOW_BANDWIDTH_HZ 50 +#define SMI240_HIGH_BANDWIDTH_HZ 400 + +#define SMI240_DATA_CHANNEL(_type, _axis, _index) \ + { \ + .type = _type, .modified = 1, .channel2 = IIO_MOD_##_axis, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .info_mask_shared_by_type = \ + BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY), \ + .info_mask_shared_by_type_available = \ + BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY), \ + .scan_index = _index, \ + .scan_type = { \ + .sign = 's', \ + .realbits = 16, \ + .storagebits = 16, \ + .endianness = IIO_LE, \ + }, \ + } + +#define SMI240_TEMP_CHANNEL(_index) \ + { \ + .type = IIO_TEMP, .modified = 1, \ + .channel2 = IIO_MOD_TEMP_OBJECT, \ + .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ + .scan_index = _index, \ + .scan_type = { \ + .sign = 's', \ + .realbits = 16, \ + .storagebits = 16, \ + .endianness = IIO_LE, \ + }, \ + } + +static const struct iio_chan_spec smi240_channels[] = { + SMI240_TEMP_CHANNEL(SMI240_TEMP_OBJECT), + SMI240_DATA_CHANNEL(IIO_ACCEL, X, SMI240_SCAN_ACCEL_X), + SMI240_DATA_CHANNEL(IIO_ACCEL, Y, SMI240_SCAN_ACCEL_Y), + SMI240_DATA_CHANNEL(IIO_ACCEL, Z, SMI240_SCAN_ACCEL_Z), + SMI240_DATA_CHANNEL(IIO_ANGL_VEL, X, SMI240_SCAN_GYRO_X), + SMI240_DATA_CHANNEL(IIO_ANGL_VEL, Y, SMI240_SCAN_GYRO_Y), + SMI240_DATA_CHANNEL(IIO_ANGL_VEL, Z, SMI240_SCAN_GYRO_Z), + IIO_CHAN_SOFT_TIMESTAMP(SMI240_SCAN_TIMESTAMP), +}; + +static const int smi240_low_pass_freqs[] = { SMI240_LOW_BANDWIDTH_HZ, + SMI240_HIGH_BANDWIDTH_HZ }; + +static int smi240_soft_reset(struct smi240_data *data) +{ + int ret; + + ret = regmap_write(data->regmap, SMI240_CMD_REG, SMI240_SOFT_RESET_CMD); + if (ret) + return ret; + fsleep(SMI240_DIGITAL_STARTUP_DELAY_US); + return 0; +} + +static int smi240_soft_config(struct smi240_data *data) +{ + int ret; + u8 acc_bw, gyr_bw; + u16 request; + + switch (data->accel_filter_freq) { + case SMI240_LOW_BANDWIDTH_HZ: + acc_bw = 0x1; + break; + case SMI240_HIGH_BANDWIDTH_HZ: + acc_bw = 0x0; + break; + default: + return -EINVAL; + } + + switch (data->anglvel_filter_freq) { + case SMI240_LOW_BANDWIDTH_HZ: + gyr_bw = 0x1; + break; + case SMI240_HIGH_BANDWIDTH_HZ: + gyr_bw = 0x0; + break; + default: + return -EINVAL; + } + + request = FIELD_PREP(SMI240_SOFT_CONFIG_EOC_MASK, 1); + request |= FIELD_PREP(SMI240_SOFT_CONFIG_GYR_BW_MASK, gyr_bw); + request |= FIELD_PREP(SMI240_SOFT_CONFIG_ACC_BW_MASK, acc_bw); + request |= FIELD_PREP(SMI240_SOFT_CONFIG_BITE_AUTO_MASK, 1); + request |= FIELD_PREP(SMI240_SOFT_CONFIG_BITE_REP_MASK, + data->bite_reps - 1); + + ret = regmap_write(data->regmap, SMI240_SOFT_CONFIG_REG, request); + if (ret) + return ret; + + fsleep(SMI240_MECH_STARTUP_DELAY_US + + data->bite_reps * SMI240_BITE_SEQUENCE_DELAY_US + + SMI240_FILTER_FLUSH_DELAY_US); + return 0; +} + +static int smi240_get_low_pass_filter_freq(struct smi240_data *data, + int chan_type, int *val) +{ + switch (chan_type) { + case IIO_ACCEL: + *val = data->accel_filter_freq; + break; + case IIO_ANGL_VEL: + *val = data->anglvel_filter_freq; + break; + default: + return -EINVAL; + } + + return 0; +} + +static int smi240_get_data(struct smi240_data *data, int chan_type, int axis, + int *val) +{ + u8 reg; + int ret, sample; + + if (chan_type == IIO_TEMP) + reg = SMI240_TEMP_CUR_REG; + else if (chan_type == IIO_ACCEL) + reg = SMI240_ACCEL_X_CUR_REG + (axis - IIO_MOD_X); + else if (chan_type == IIO_ANGL_VEL) + reg = SMI240_GYRO_X_CUR_REG + (axis - IIO_MOD_X); + else + return -EINVAL; + + ret = regmap_read(data->regmap, reg, &sample); + if (ret) + return ret; + + *val = sign_extend32(sample, 15); + + return 0; +} + +static irqreturn_t smi240_trigger_handler(int irq, void *p) +{ + struct iio_poll_func *pf = p; + struct iio_dev *indio_dev = pf->indio_dev; + struct smi240_data *data = iio_priv(indio_dev); + int ret, sample, chan, i = 0; + + data->capture = SMI240_CAPTURE_ON; + + for_each_set_bit(chan, indio_dev->active_scan_mask, + indio_dev->masklength) { + ret = regmap_read(data->regmap, + SMI240_DATA_CAP_FIRST_REG + chan, &sample); + data->capture = SMI240_CAPTURE_OFF; + if (ret) + break; + data->buf[i++] = sample; + } + + if (ret == 0) + iio_push_to_buffers_with_timestamp(indio_dev, data->buf, + pf->timestamp); + + iio_trigger_notify_done(indio_dev->trig); + return IRQ_HANDLED; +} + +static int smi240_read_avail(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, const int **vals, + int *type, int *length, long mask) +{ + switch (mask) { + case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: + *vals = smi240_low_pass_freqs; + *length = ARRAY_SIZE(smi240_low_pass_freqs); + *type = IIO_VAL_INT; + return IIO_AVAIL_LIST; + default: + return -EINVAL; + } +} + +static int smi240_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int *val, + int *val2, long mask) +{ + int ret; + struct smi240_data *data = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_RAW: + if (iio_buffer_enabled(indio_dev)) + return -EBUSY; + ret = smi240_get_data(data, chan->type, chan->channel2, val); + if (ret) + return ret; + return IIO_VAL_INT; + + case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: + ret = smi240_get_low_pass_filter_freq(data, chan->type, val); + if (ret) + return ret; + return IIO_VAL_INT; + + default: + return -EINVAL; + } +} + +static int smi240_write_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, int val, int val2, + long mask) +{ + int ret, i; + struct smi240_data *data = iio_priv(indio_dev); + + switch (mask) { + case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: + for (i = 0; i < ARRAY_SIZE(smi240_low_pass_freqs); i++) { + if (val == smi240_low_pass_freqs[i]) + break; + } + + if (i == ARRAY_SIZE(smi240_low_pass_freqs)) + return -EINVAL; + + switch (chan->type) { + case IIO_ACCEL: + data->accel_filter_freq = val; + break; + case IIO_ANGL_VEL: + data->anglvel_filter_freq = val; + break; + default: + return -EINVAL; + } + break; + default: + return -EINVAL; + } + + // Write access to soft config is locked until hard/soft reset + ret = smi240_soft_reset(data); + if (ret) + return ret; + + ret = smi240_soft_config(data); + if (ret) + return ret; + + return 0; +} + +static int smi240_init(struct smi240_data *data) +{ + data->accel_filter_freq = SMI240_HIGH_BANDWIDTH_HZ; + data->anglvel_filter_freq = SMI240_HIGH_BANDWIDTH_HZ; + data->bite_reps = 3; + + return smi240_soft_config(data); +} + +static IIO_CONST_ATTR_TEMP_SCALE("1/256"); +static IIO_CONST_ATTR_TEMP_OFFSET("25"); + +static struct attribute *smi240_attrs[] = { + &iio_const_attr_in_temp_scale.dev_attr.attr, + &iio_const_attr_in_temp_offset.dev_attr.attr, + NULL, +}; + +static const struct attribute_group smi240_attrs_group = { + .attrs = smi240_attrs, +}; + +static const struct iio_info smi240_info = { + .read_avail = smi240_read_avail, + .read_raw = smi240_read_raw, + .write_raw = smi240_write_raw, + .attrs = &smi240_attrs_group, +}; + +int smi240_core_probe(struct device *dev, struct regmap *regmap) +{ + struct iio_dev *indio_dev; + struct smi240_data *data; + int ret, response; + + indio_dev = devm_iio_device_alloc(dev, sizeof(*data)); + if (!indio_dev) + return -ENOMEM; + + data = iio_priv(indio_dev); + dev_set_drvdata(dev, indio_dev); + data->regmap = regmap; + data->capture = SMI240_CAPTURE_OFF; + + ret = regmap_read(data->regmap, SMI240_CHIP_ID_REG, &response); + if (ret) + return dev_err_probe(dev, ret, "Read chip id failed\n"); + + if (response != SMI240_CHIP_ID) + dev_info(dev, "Unknown chip id: 0x%04x\n", response); + + ret = smi240_init(data); + if (ret) + return dev_err_probe(dev, ret, + "Device initialization failed\n"); + + indio_dev->channels = smi240_channels; + indio_dev->num_channels = ARRAY_SIZE(smi240_channels); + indio_dev->name = "smi240"; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->info = &smi240_info; + + ret = devm_iio_triggered_buffer_setup(dev, indio_dev, + iio_pollfunc_store_time, + smi240_trigger_handler, NULL); + if (ret) + return dev_err_probe(dev, ret, + "Setup triggered buffer failed\n"); + + ret = devm_iio_device_register(dev, indio_dev); + if (ret) + return dev_err_probe(dev, ret, "Register IIO device failed\n"); + + return 0; +} +EXPORT_SYMBOL_GPL(smi240_core_probe); diff --git a/drivers/iio/imu/smi240/smi240_spi.c b/drivers/iio/imu/smi240/smi240_spi.c new file mode 100644 index 00000000000..d1ed92dce79 --- /dev/null +++ b/drivers/iio/imu/smi240/smi240_spi.c @@ -0,0 +1,164 @@ +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 +/* + * Copyright (c) 2024 Robert Bosch GmbH. + * + */ +#include +#include +#include +#include +#include +#include + +#include "smi240.h" + +#define SMI240_CRC_INIT 0x05 +#define SMI240_CRC_POLY 0x0B +#define SMI240_BUS_ID 0x00 + +#define SMI240_SD_BIT_MASK 0x80000000 +#define SMI240_CS_BIT_MASK 0x00000008 + +#define SMI240_WRITE_ADDR_MASK GENMASK(29, 22) +#define SMI240_WRITE_BIT_MASK 0x00200000 +#define SMI240_WRITE_DATA_MASK GENMASK(18, 3) +#define SMI240_CAP_BIT_MASK 0x00100000 +#define SMI240_READ_DATA_MASK GENMASK(19, 4) + +static u8 smi240_crc3(u32 data, u8 init, u8 poly) +{ + u8 crc = init; + u8 do_xor; + s8 i = 31; + + do { + do_xor = crc & 0x04; + crc <<= 1; + crc |= 0x01 & (data >> i); + if (do_xor) + crc ^= poly; + + crc &= 0x07; + } while (--i >= 0); + + return crc; +} + +static bool smi240_sensor_data_is_valid(u32 data) +{ + if (smi240_crc3(data, SMI240_CRC_INIT, SMI240_CRC_POLY) != 0) + return false; + + if (FIELD_GET(SMI240_SD_BIT_MASK, data) & + FIELD_GET(SMI240_CS_BIT_MASK, data)) + return false; + + return true; +} + +static int smi240_regmap_spi_read(void *context, const void *reg_buf, + size_t reg_size, void *val_buf, + size_t val_size) +{ + int ret; + __be32 request, response; + struct spi_device *spi = context; + struct iio_dev *indio_dev = dev_get_drvdata(&spi->dev); + struct smi240_data *data = iio_priv(indio_dev); + + request = SMI240_BUS_ID << 30; + request |= FIELD_PREP(SMI240_CAP_BIT_MASK, data->capture); + request |= FIELD_PREP(SMI240_WRITE_ADDR_MASK, *(u8 *)reg_buf); + request |= smi240_crc3(request, SMI240_CRC_INIT, SMI240_CRC_POLY); + request = cpu_to_be32(request); + + /* + * SMI240 module consists of a 32Bit Out Of Frame (OOF) + * SPI protocol, where the slave interface responds to + * the Master request in the next frame. + * CS signal must toggle (> 700 ns) between the frames. + */ + ret = spi_write(spi, &request, sizeof(request)); + if (ret) + return ret; + + ret = spi_read(spi, &response, sizeof(response)); + if (ret) + return ret; + + response = be32_to_cpu(response); + + if (!smi240_sensor_data_is_valid(response)) + return -EIO; + + response = FIELD_GET(SMI240_READ_DATA_MASK, response); + memcpy(val_buf, &response, val_size); + + return 0; +} + +static int smi240_regmap_spi_write(void *context, const void *data, + size_t count) +{ + __be32 request; + struct spi_device *spi = context; + u8 reg_addr = ((u8 *)data)[0]; + u16 reg_data = ((u8 *)data)[2] << 8 | ((u8 *)data)[1]; + + request = SMI240_BUS_ID << 30; + request |= FIELD_PREP(SMI240_WRITE_BIT_MASK, 1); + request |= FIELD_PREP(SMI240_WRITE_ADDR_MASK, reg_addr); + request |= FIELD_PREP(SMI240_WRITE_DATA_MASK, reg_data); + request |= smi240_crc3(request, SMI240_CRC_INIT, SMI240_CRC_POLY); + request = cpu_to_be32(request); + + return spi_write(spi, &request, sizeof(request)); +} + +static const struct regmap_bus smi240_regmap_bus = { + .read = smi240_regmap_spi_read, + .write = smi240_regmap_spi_write, +}; + +static const struct regmap_config smi240_regmap_config = { + .reg_bits = 8, + .val_bits = 16, + .val_format_endian = REGMAP_ENDIAN_LITTLE, +}; + +static int smi240_spi_probe(struct spi_device *spi) +{ + struct regmap *regmap; + + regmap = devm_regmap_init(&spi->dev, &smi240_regmap_bus, &spi->dev, + &smi240_regmap_config); + if (IS_ERR(regmap)) + return dev_err_probe(&spi->dev, PTR_ERR(regmap), + "Failed to initialize SPI Regmap\n"); + + return smi240_core_probe(&spi->dev, regmap); +} + +static const struct spi_device_id smi240_spi_id[] = { { "smi240", 0 }, {} }; +MODULE_DEVICE_TABLE(spi, smi240_spi_id); + +static const struct of_device_id smi240_of_match[] = { + { .compatible = "bosch,smi240" }, + {}, +}; +MODULE_DEVICE_TABLE(of, smi240_of_match); + +static struct spi_driver smi240_spi_driver = { + .probe = smi240_spi_probe, + .id_table = smi240_spi_id, + .driver = { + .of_match_table = smi240_of_match, + .name = "smi240", + }, +}; +module_spi_driver(smi240_spi_driver); + +MODULE_AUTHOR("Markus Lochmann "); +MODULE_AUTHOR("Stefan Gutmann "); +MODULE_DESCRIPTION("Bosch SMI240 SPI driver"); +MODULE_LICENSE("Dual BSD/GPL");