From patchwork Wed May 27 18:57:02 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean-Baptiste Maneyrol X-Patchwork-Id: 11573789 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E3CD6912 for ; Wed, 27 May 2020 18:58:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C5E112078C for ; Wed, 27 May 2020 18:58:41 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=invensense.com header.i=@invensense.com header.b="YvvlvDPu"; dkim=pass (1024-bit key) header.d=invensense.onmicrosoft.com header.i=@invensense.onmicrosoft.com header.b="QHjJ+nvO" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387672AbgE0S6l (ORCPT ); Wed, 27 May 2020 14:58:41 -0400 Received: from mx0a-00328301.pphosted.com ([148.163.145.46]:37874 "EHLO mx0a-00328301.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728754AbgE0S5t (ORCPT ); Wed, 27 May 2020 14:57:49 -0400 Received: from pps.filterd (m0156134.ppops.net [127.0.0.1]) by mx0a-00328301.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 04RIuleM002104; Wed, 27 May 2020 11:57:47 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=invensense.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : content-type : mime-version; s=pfpt1; bh=yobIXnKmHVtQN55oixDDsZx17pu/hx9Y5m9OJf2mIOA=; b=YvvlvDPuqEOcfnoKR+JBXx8lTb6fUZzFGsDlxjkT09O48SrlIBpIaR5npmi8hGx2cTOs p7eIFeey3R2vLZCxP4ZD6cvMVwA671ddOgyzIu29Map5lT+ACsNx9bTaWi8YEjO3G2ix qpQkhtYK9j9HNGajjfedGIf3cGDMhM9q+9IMVbyCH47ymq5V8EM+rHAM+ShjSQ6B47I1 f9tsl3UOn113fH4c7hJuVW79giJ/RHMAdR/10ICg2QFTi/AACI90hnQFuVreSWpJ1VxW rktjOqTZfHFzVD15xx0wAowYk4t2nfr7zgdIDS4LkXCiWCQWShE3xufqnDRk90viw/dO wQ== Received: from nam11-bn8-obe.outbound.protection.outlook.com (mail-bn8nam11lp2174.outbound.protection.outlook.com [104.47.58.174]) by mx0a-00328301.pphosted.com with ESMTP id 3194qh0ncu-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 27 May 2020 11:57:46 -0700 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=FtenijK6c5tNhVDGY3b+sM1PemK29VvGi12qdeZC+4uPmyT/oHCA7lWCFe/ENxKhnWCO1FIjp243+QDDFQ7rK2nV0sTplJ2wgP9KaO3nWueGxX9tNHwczNeXRHFnMIT6catNK4DqLw4MRlw6pAxHEAXgM5a5qjthaIHXTbjSFkH+nwDo+wA7EYsxiZ2NL29aL3NNLu4ooD++1tjGczrWm5bcch/w8ukk4EEqv5ylL/2k9hKKg+OgWzQ0QGPoyeo85ZQ87jUKUhEDPuUyL1RKNfEi2fjs8mz/Rm/RUM5+D+FkoyaYnPcCHRKNs2/WlanyEKrx9BEC+skmIi6ly/twEg== 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-SenderADCheck; bh=yobIXnKmHVtQN55oixDDsZx17pu/hx9Y5m9OJf2mIOA=; b=Z2LCg2Wgob8MW0MDi2bVcm45yysuFJjUq2QCxdGw55fvKH2HNaGLem2vbQ1mUm4E8Z8YVLeDf9mrPdLp2AzS/oP3AMwJp+UZg37XsmeRq0Yikv3RMhgHfRoODUxn85Z7ou73xpU4ruVQlX2nC2P1aC53215nBYg4cNlGZ+Tzdpqfqo+U92eMdlBD3370ZgLpNwkAYaZID3yzKQBc2Jrm72nbYTCZ5r+a5QCZaGvmhOxiolJdyQ52T9B1vJK7aPSE5Azm7tele0XPgrwZBYtkYv3KVOXMGrhK/rzohcFc2w4NTN32Y+48lJiGMVI8qxjPprH/y8fDA08EaJ1GpyZ3oQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=invensense.com; dmarc=pass action=none header.from=invensense.com; dkim=pass header.d=invensense.com; arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=invensense.onmicrosoft.com; s=selector2-invensense-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=yobIXnKmHVtQN55oixDDsZx17pu/hx9Y5m9OJf2mIOA=; b=QHjJ+nvOV0MG4ri1pq8GtGNNcIRBqP+vuXxb+CyptZn5D06aAcGWMhPoUwNPfM/quFOvuRUVfnC1AGdi4C6r5fkMtfpw2sx/KpPPobWL4QQ4Y2Zv+hjfMS7TGkvZpYlpCDDk89eVy7qk7rxdOepOWTzin1p/yyRR0Zip1fiw6r8= Authentication-Results: kernel.org; dkim=none (message not signed) header.d=none;kernel.org; dmarc=none action=none header.from=invensense.com; Received: from MN2PR12MB4422.namprd12.prod.outlook.com (2603:10b6:208:265::9) by MN2PR12MB3151.namprd12.prod.outlook.com (2603:10b6:208:d1::16) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3021.23; Wed, 27 May 2020 18:57:44 +0000 Received: from MN2PR12MB4422.namprd12.prod.outlook.com ([fe80::8940:8e95:6996:cc0]) by MN2PR12MB4422.namprd12.prod.outlook.com ([fe80::8940:8e95:6996:cc0%8]) with mapi id 15.20.3045.018; Wed, 27 May 2020 18:57:44 +0000 From: Jean-Baptiste Maneyrol To: jic23@kernel.org, robh+dt@kernel.org, robh@kernel.org, mchehab+huawei@kernel.org, davem@davemloft.net, gregkh@linuxfoundation.org Cc: linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Jean-Baptiste Maneyrol Subject: [PATCH v2 03/12] iio: imu: inv_icm42600: add SPI driver for inv_icm42600 driver Date: Wed, 27 May 2020 20:57:02 +0200 Message-Id: <20200527185711.21331-4-jmaneyrol@invensense.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200527185711.21331-1-jmaneyrol@invensense.com> References: <20200527185711.21331-1-jmaneyrol@invensense.com> X-ClientProxiedBy: LO2P265CA0168.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:9::36) To MN2PR12MB4422.namprd12.prod.outlook.com (2603:10b6:208:265::9) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from frgnb-buildozer.invcorp.invensense.com (77.157.193.39) by LO2P265CA0168.GBRP265.PROD.OUTLOOK.COM (2603:10a6:600:9::36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3021.26 via Frontend Transport; Wed, 27 May 2020 18:57:42 +0000 X-Mailer: git-send-email 2.17.1 X-Originating-IP: [77.157.193.39] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 87a7b59a-6f41-4ba4-27b6-08d8026fd6b3 X-MS-TrafficTypeDiagnostic: MN2PR12MB3151: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:843; X-Forefront-PRVS: 04163EF38A X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: enApABTu42rpM4auQ1E0kni36Xv5KY3H/rg4t6FssbzR9de7ZJC+X51T+3KOmCDi58ly5IJwwRLpUOGx1pvJFOD+Q+4G9DQ1iqzRRWlleM77zyM6QlDicoJip1QV6w1+kCc2gVzY+P+qEkDnPaVrUdhStMEUg+9Vit57buRYfP2dBr3bNaDmkOWq5/geWNhjk6E9hR0NIYyKJYqoNx8bPHUsfjjuRdiuX3IA7qLBpcxBjeVha17Jp98PuN4AgALmsx/uEn7hKITvxwLo9x9nAnnHD/GXK15Mrl7nG8T/80/x9pLMQWrPUicURFrsZ2CJEViw3HOA5OkjemtoOiTMPg== X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:MN2PR12MB4422.namprd12.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:(136003)(39850400004)(346002)(366004)(396003)(376002)(16526019)(478600001)(107886003)(8676002)(5660300002)(186003)(8936002)(316002)(6666004)(6486002)(1076003)(7696005)(66946007)(26005)(2616005)(956004)(2906002)(86362001)(36756003)(52116002)(4326008)(66556008)(83380400001)(66476007);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: tpEwwT56x3GERKw4gg6bOrmYV2TMKjkXwBnyWn3TTXLaHefKhLCZ7WTBn71HzUiTanMLN0o6P8AxDFs0hhDVKa34JsWBFll+k9ZlETxjPSgcVgBtceK/teZNv+tUcPB+MssxPda0d/jddqGW2DokQgvT9Ask8FWJWYuUgMj2CO6IszcWdj+fhWViEsq4S8sul69kR0kiyfaFHuQpznhSPuDqKzBxmpTmu4U9ZiFlUjgIjTbEZIJEznpNyrrN6vIy6D0V5eWkks01FqgnFG4qpZeInz3e7Ter6WZXy4kgzxExq+65fDirdrmkuZX6SxfgdfPA1ztfnwgxXXMwR43wyqLJ9qEl6+SBQFDgDvxpUnS1+JYviBjvVO5LR0eWRqkIL0eeEZ0nG9cW4kxkw4A6pTnIq7Me2KCcRZ38L5kHBj+ECJxv+GcOzRC1XOho1SByN6bJDvClULRXoyN5KPOO/uKI6plBWeDMKc5iDW2o4fQ= X-OriginatorOrg: invensense.com X-MS-Exchange-CrossTenant-Network-Message-Id: 87a7b59a-6f41-4ba4-27b6-08d8026fd6b3 X-MS-Exchange-CrossTenant-OriginalArrivalTime: 27 May 2020 18:57:44.2816 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 462b3b3b-e42b-47ea-801a-f1581aac892d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: VRJUQbtM9D6f7KeU0H84DimWxvP8og+xYvpNRXg76MGMs5rOpBBLFi4cG62RmPCfYODavp8BqIOobO4FW/QXkOvZ1lAl3l3vQXfW/UnKG2U= X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR12MB3151 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.216,18.0.687 definitions=2020-05-27_03:2020-05-27,2020-05-27 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 bulkscore=0 suspectscore=0 cotscore=-2147483648 mlxlogscore=999 clxscore=1015 lowpriorityscore=0 malwarescore=0 impostorscore=0 spamscore=0 mlxscore=0 adultscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2004280000 definitions=main-2005270145 Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Add SPI driver for InvenSense ICM-426xxx devices. Configure bus signal slew rates as indicated in the datasheet. Signed-off-by: Jean-Baptiste Maneyrol --- .../iio/imu/inv_icm42600/inv_icm42600_spi.c | 99 +++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c new file mode 100644 index 000000000000..a9c5e2fdbe2a --- /dev/null +++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c @@ -0,0 +1,99 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2020 InvenSense, Inc. + */ + +#include +#include +#include +#include +#include +#include +#include + +#include "inv_icm42600.h" + +static int inv_icm42600_spi_bus_setup(struct inv_icm42600_state *st) +{ + unsigned int mask, val; + int ret; + + /* setup interface registers */ + val = INV_ICM42600_INTF_CONFIG6_I3C_EN | + INV_ICM42600_INTF_CONFIG6_I3C_SDR_EN | + INV_ICM42600_INTF_CONFIG6_I3C_DDR_EN; + ret = regmap_update_bits(st->map, INV_ICM42600_REG_INTF_CONFIG6, + INV_ICM42600_INTF_CONFIG6_MASK, val); + if (ret) + return ret; + + ret = regmap_update_bits(st->map, INV_ICM42600_REG_INTF_CONFIG4, + INV_ICM42600_INTF_CONFIG4_I3C_BUS_ONLY, 0); + if (ret) + return ret; + + /* set slew rates for I2C and SPI */ + mask = INV_ICM42600_DRIVE_CONFIG_I2C_MASK | + INV_ICM42600_DRIVE_CONFIG_SPI_MASK; + val = INV_ICM42600_DRIVE_CONFIG_I2C(INV_ICM42600_SLEW_RATE_20_60NS) | + INV_ICM42600_DRIVE_CONFIG_SPI(INV_ICM42600_SLEW_RATE_INF_2NS); + ret = regmap_update_bits(st->map, INV_ICM42600_REG_DRIVE_CONFIG, + mask, val); + if (ret) + return ret; + + /* disable i2c bus */ + return regmap_update_bits(st->map, INV_ICM42600_REG_INTF_CONFIG0, + INV_ICM42600_INTF_CONFIG0_UI_SIFS_CFG_MASK, + INV_ICM42600_INTF_CONFIG0_UI_SIFS_CFG_I2C_DIS); +} + +static int inv_icm42600_probe(struct spi_device *spi) +{ + const void *match; + enum inv_icm42600_chip chip; + struct regmap *regmap; + + match = device_get_match_data(&spi->dev); + if (!match) + return -EINVAL; + chip = (enum inv_icm42600_chip)match; + + regmap = devm_regmap_init_spi(spi, &inv_icm42600_regmap_config); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); + + return inv_icm42600_core_probe(regmap, chip, inv_icm42600_spi_bus_setup); +} + +static const struct of_device_id inv_icm42600_of_matches[] = { + { + .compatible = "invensense,icm42600", + .data = (void *)INV_CHIP_ICM42600, + }, { + .compatible = "invensense,icm42602", + .data = (void *)INV_CHIP_ICM42602, + }, { + .compatible = "invensense,icm42605", + .data = (void *)INV_CHIP_ICM42605, + }, { + .compatible = "invensense,icm42622", + .data = (void *)INV_CHIP_ICM42622, + }, + {} +}; +MODULE_DEVICE_TABLE(of, inv_icm42600_of_matches); + +static struct spi_driver inv_icm42600_driver = { + .driver = { + .name = "inv-icm42600-spi", + .of_match_table = inv_icm42600_of_matches, + .pm = &inv_icm42600_pm_ops, + }, + .probe = inv_icm42600_probe, +}; +module_spi_driver(inv_icm42600_driver); + +MODULE_AUTHOR("InvenSense, Inc."); +MODULE_DESCRIPTION("InvenSense ICM-426xx SPI driver"); +MODULE_LICENSE("GPL");