From patchwork Tue Jul 23 07:36:38 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandru Ardelean X-Patchwork-Id: 11054045 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 81BA314F6 for ; Tue, 23 Jul 2019 07:37:05 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6D65028508 for ; Tue, 23 Jul 2019 07:37:05 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5E28E285E2; Tue, 23 Jul 2019 07:37:05 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AFCB028508 for ; Tue, 23 Jul 2019 07:37:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388285AbfGWHhA (ORCPT ); Tue, 23 Jul 2019 03:37:00 -0400 Received: from mx0a-00128a01.pphosted.com ([148.163.135.77]:58072 "EHLO mx0a-00128a01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729217AbfGWHg7 (ORCPT ); Tue, 23 Jul 2019 03:36:59 -0400 Received: from pps.filterd (m0167088.ppops.net [127.0.0.1]) by mx0a-00128a01.pphosted.com (8.16.0.27/8.16.0.27) with SMTP id x6N7XCTk011250; Tue, 23 Jul 2019 03:36:55 -0400 Received: from nam04-bn3-obe.outbound.protection.outlook.com (mail-bn3nam04lp2052.outbound.protection.outlook.com [104.47.46.52]) by mx0a-00128a01.pphosted.com with ESMTP id 2twb5ju46p-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Tue, 23 Jul 2019 03:36:55 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=WeGRo42riOv+xHpfgQ1IKWYvDtAATAS4bca3A2YGQMFMHJd9RGn9enUl9by67aKD8hNJA3gl9KqSpLrV7b1NiJBxhgOnxS9X2uXCD3i5PLCiFXeO0MiGC0lIIscymxbw6eyHrFctNnmFgkb178V8na2982nsreCVTOFpZfv7Y8AxjjTu2rMpUH2ysr72iEm8jej4/FvLB3UxNSpvnnt73N6rAHHZ3+wngzh8WuL26HszFEM8VVjdNvZ0Hk8XASmNuGp4xRMqfT1fOEa1sjqZukOB64dk18KX1QUtuhmh2bjhFyAPfNrRYRk0y390sx+mjP4/UYcNiQpEmSn6waPtvw== 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=J8EA4U5alx8OZtfP66MG26FhlOBNXvHS+dQlMGYC3DQ=; b=E5dEwmv+9YCHGlrAmOg2HZLfAkuE89aRwksnJY8SL6ASmQ/dLkix2sILpMB7qUo9p8SOoHeYAoRjdXglv7O/ESnwEkY8pgRgwQF1Ojt/exz/C5FMuKq1G+cIi1k2RqADUFZ1nUUbut9mdz0ypE7DI8NZW/fuShVX686FQEn8ig/wsftukX1VbOOTmdMFZpi+pXiPg9PsfCdvoi4c52McmLVMxvZhXCkTg+HUzuTGWHC3qUOv9//skyLN9LtJVbgiModeS0TGvc46NKFb2A+Q6RLTi1Awe4V6waNNxpKZdj/GwQlcC8CKtCIMuO85663nxoHl+gWlvJz/msbOseRySQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1;spf=pass (sender ip is 137.71.25.55) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=analog.com;dmarc=bestguesspass action=none header.from=analog.com;dkim=none (message not signed);arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=analog.onmicrosoft.com; s=selector2-analog-onmicrosoft-com; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=J8EA4U5alx8OZtfP66MG26FhlOBNXvHS+dQlMGYC3DQ=; b=b8PMybOS1LOHWMK7vxY1OFIeie0uGzVoJFp66nFx/wxQNdppbismAkbGGMfVbBfG7xt7DOG7YJ9l8PeZYcBiLX1CeTWRwd2C8A/opXsNMR6uA6qI9RdvaIBp+OOF7oGrFSvYN3+IgolRygZkHs6JPFNgVuBQ7IIsnmPPHwHGdpo= Received: from CY1PR03CA0019.namprd03.prod.outlook.com (2603:10b6:600::29) by BN8PR03MB4707.namprd03.prod.outlook.com (2603:10b6:408:6c::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2094.16; Tue, 23 Jul 2019 07:36:53 +0000 Received: from BL2NAM02FT011.eop-nam02.prod.protection.outlook.com (2a01:111:f400:7e46::204) by CY1PR03CA0019.outlook.office365.com (2603:10b6:600::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2094.16 via Frontend Transport; Tue, 23 Jul 2019 07:36:52 +0000 Received-SPF: Pass (protection.outlook.com: domain of analog.com designates 137.71.25.55 as permitted sender) receiver=protection.outlook.com; client-ip=137.71.25.55; helo=nwd2mta1.analog.com; Received: from nwd2mta1.analog.com (137.71.25.55) by BL2NAM02FT011.mail.protection.outlook.com (10.152.77.5) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_RSA_WITH_AES_256_CBC_SHA) id 15.20.2052.25 via Frontend Transport; Tue, 23 Jul 2019 07:36:52 +0000 Received: from NWD2HUBCAS7.ad.analog.com (nwd2hubcas7.ad.analog.com [10.64.69.107]) by nwd2mta1.analog.com (8.13.8/8.13.8) with ESMTP id x6N7aoo2001487 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=OK); Tue, 23 Jul 2019 00:36:50 -0700 Received: from saturn.ad.analog.com (10.48.65.145) by NWD2HUBCAS7.ad.analog.com (10.64.69.107) with Microsoft SMTP Server id 14.3.408.0; Tue, 23 Jul 2019 03:36:51 -0400 From: Alexandru Ardelean To: , , , CC: , , , , Alexandru Ardelean , Michael Hennerich Subject: [PATCH 1/3][V4] iio: imu: adis: Add support for SPI transfer cs_change_delay Date: Tue, 23 Jul 2019 10:36:38 +0300 Message-ID: <20190723073641.27801-2-alexandru.ardelean@analog.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190723073641.27801-1-alexandru.ardelean@analog.com> References: <20190723073641.27801-1-alexandru.ardelean@analog.com> MIME-Version: 1.0 X-ADIRoutedOnPrem: True X-EOPAttributedMessage: 0 X-MS-Office365-Filtering-HT: Tenant X-Forefront-Antispam-Report: CIP:137.71.25.55;IPV:NLI;CTRY:US;EFV:NLI;SFV:NSPM;SFS:(10009020)(136003)(346002)(396003)(376002)(39860400002)(2980300002)(189003)(199004)(50226002)(1076003)(8936002)(4326008)(106002)(54906003)(336012)(7696005)(246002)(26005)(76176011)(186003)(2906002)(51416003)(126002)(476003)(446003)(305945005)(8676002)(11346002)(426003)(86362001)(7636002)(2616005)(486006)(6666004)(478600001)(5660300002)(50466002)(107886003)(356004)(2201001)(2870700001)(316002)(110136005)(70586007)(70206006)(47776003)(48376002)(36756003)(44832011);DIR:OUT;SFP:1101;SCL:1;SRVR:BN8PR03MB4707;H:nwd2mta1.analog.com;FPR:;SPF:Pass;LANG:en;PTR:nwd2mail10.analog.com;MX:1;A:1; X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: bc733dd5-768d-4fc3-958b-08d70f4087d8 X-Microsoft-Antispam: BCL:0;PCL:0;RULEID:(2390118)(7020095)(4652040)(8989299)(4534185)(4627221)(201703031133081)(201702281549075)(8990200)(5600148)(711020)(4605104)(4709080)(1401327)(2017052603328);SRVR:BN8PR03MB4707; X-MS-TrafficTypeDiagnostic: BN8PR03MB4707: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6790; X-Forefront-PRVS: 0107098B6C X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam-Message-Info: BCxDQju+pVOEI0Y5i6k8ePr7go+egz6xwAW6VT6xNKLLG1PS+FW/BJcgTN+1YmAJ084CqKcb+yDRbYyRaiJdFGq/0cR+wzY1v1DD9CcHH4RcB3PSsMguL2NZ3JhGqX4Fai68yjA9AFAs6uvk7Gv+hkscIZGe5JA7cAPjXnB5JmUjk1JmvVwS+UQpDr0dPUIvOWbR91kS1hEia0yce4T7sK+v9aMGwVWD7luSnJmcCnzh5rAUmRIdIftTNItGpzADiyThO6KJwA5GQmUftu4WuzyXf6c2oygFKWIY3dYYOvLOhteL/Uf6NiDGZ4Mv4ys4j8iKV7n2ffmrrYmVGYaPKmJ/CG1bqub3oDen9N4NGfI2Lea3I7redMu9swD8hAO8DeWc1WZiQ2By+uEk/GNOg3BONYY6I6zCXc6Tpvp1WrI= X-OriginatorOrg: analog.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 23 Jul 2019 07:36:52.6555 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: bc733dd5-768d-4fc3-958b-08d70f4087d8 X-MS-Exchange-CrossTenant-Id: eaa689b4-8f87-40e0-9c6f-7228de4d754a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=eaa689b4-8f87-40e0-9c6f-7228de4d754a;Ip=[137.71.25.55];Helo=[nwd2mta1.analog.com] X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN8PR03MB4707 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-07-23_04:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1907230071 Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP The ADIS16460 requires a higher delay before the next transfer. Since the SPI framework supports configuring the delay before the next transfer, this driver will become the first user of it. The support for this functionality in ADIS16460 requires an addition to the ADIS lib to support the `cs_change_delay` functionality from the SPI subsystem. Signed-off-by: Michael Hennerich Signed-off-by: Alexandru Ardelean --- drivers/iio/imu/adis.c | 12 ++++++++++++ include/linux/iio/imu/adis.h | 2 ++ 2 files changed, 14 insertions(+) diff --git a/drivers/iio/imu/adis.c b/drivers/iio/imu/adis.c index 30281e91dbf9..1631c255deab 100644 --- a/drivers/iio/imu/adis.c +++ b/drivers/iio/imu/adis.c @@ -39,18 +39,24 @@ int adis_write_reg(struct adis *adis, unsigned int reg, .len = 2, .cs_change = 1, .delay_usecs = adis->data->write_delay, + .cs_change_delay = adis->data->cs_change_delay, + .cs_change_delay_unit = SPI_DELAY_UNIT_USECS, }, { .tx_buf = adis->tx + 2, .bits_per_word = 8, .len = 2, .cs_change = 1, .delay_usecs = adis->data->write_delay, + .cs_change_delay = adis->data->cs_change_delay, + .cs_change_delay_unit = SPI_DELAY_UNIT_USECS, }, { .tx_buf = adis->tx + 4, .bits_per_word = 8, .len = 2, .cs_change = 1, .delay_usecs = adis->data->write_delay, + .cs_change_delay = adis->data->cs_change_delay, + .cs_change_delay_unit = SPI_DELAY_UNIT_USECS, }, { .tx_buf = adis->tx + 6, .bits_per_word = 8, @@ -133,12 +139,16 @@ int adis_read_reg(struct adis *adis, unsigned int reg, .len = 2, .cs_change = 1, .delay_usecs = adis->data->write_delay, + .cs_change_delay = adis->data->cs_change_delay, + .cs_change_delay_unit = SPI_DELAY_UNIT_USECS, }, { .tx_buf = adis->tx + 2, .bits_per_word = 8, .len = 2, .cs_change = 1, .delay_usecs = adis->data->read_delay, + .cs_change_delay = adis->data->cs_change_delay, + .cs_change_delay_unit = SPI_DELAY_UNIT_USECS, }, { .tx_buf = adis->tx + 4, .rx_buf = adis->rx, @@ -146,6 +156,8 @@ int adis_read_reg(struct adis *adis, unsigned int reg, .len = 2, .cs_change = 1, .delay_usecs = adis->data->read_delay, + .cs_change_delay = adis->data->cs_change_delay, + .cs_change_delay_unit = SPI_DELAY_UNIT_USECS, }, { .rx_buf = adis->rx + 2, .bits_per_word = 8, diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h index 3428d06b2f44..4c53815bb729 100644 --- a/include/linux/iio/imu/adis.h +++ b/include/linux/iio/imu/adis.h @@ -26,6 +26,7 @@ struct adis_burst; * struct adis_data - ADIS chip variant specific data * @read_delay: SPI delay for read operations in us * @write_delay: SPI delay for write operations in us + * @cs_change_delay: SPI delay between CS changes in us * @glob_cmd_reg: Register address of the GLOB_CMD register * @msc_ctrl_reg: Register address of the MSC_CTRL register * @diag_stat_reg: Register address of the DIAG_STAT register @@ -35,6 +36,7 @@ struct adis_burst; struct adis_data { unsigned int read_delay; unsigned int write_delay; + unsigned int cs_change_delay; unsigned int glob_cmd_reg; unsigned int msc_ctrl_reg;