From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6F2C9C04EB9 for ; Mon, 3 Dec 2018 08:39:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 28D692081C for ; Mon, 3 Dec 2018 08:39:14 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=nxp.com header.i=@nxp.com header.b="XSSC8sMi" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 28D692081C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725953AbeLCIjO (ORCPT ); Mon, 3 Dec 2018 03:39:14 -0500 Received: from mail-eopbgr40047.outbound.protection.outlook.com ([40.107.4.47]:21654 "EHLO EUR03-DB5-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725851AbeLCIjO (ORCPT ); Mon, 3 Dec 2018 03:39:14 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nxp.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=JwpmnhJYKSxWI/smX6DS9cVPW0aQ+K6nMhBM1K8RUjc=; b=XSSC8sMiZnjPIrKzuNm4HPkvHn6JeYlBYrVRYq52368+CKXw/xfLEj8A5hsVTTGLM8MDnQssAMRQ6Gpvvj+Tu+ukFRqUBvLUwlxXwr8Gql5tVmSur6/LeQdr/jrivFscn7XgNSh3LwNMInk5bWPzZkgVpCrrK5X3IAvfCrNStPc= Received: from VI1PR04MB5726.eurprd04.prod.outlook.com (20.178.127.24) by VI1PR04MB4718.eurprd04.prod.outlook.com (20.177.48.159) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.1382.22; Mon, 3 Dec 2018 08:39:06 +0000 Received: from VI1PR04MB5726.eurprd04.prod.outlook.com ([fe80::595a:9890:8397:5d51]) by VI1PR04MB5726.eurprd04.prod.outlook.com ([fe80::595a:9890:8397:5d51%4]) with mapi id 15.20.1382.020; Mon, 3 Dec 2018 08:39:06 +0000 From: Yogesh Narayan Gaur To: "linux-mtd@lists.infradead.org" , "boris.brezillon@bootlin.com" , "broonie@kernel.org" , "marek.vasut@gmail.com" , "vigneshr@ti.com" , "linux-spi@vger.kernel.org" , "devicetree@vger.kernel.org" CC: "robh@kernel.org" , "mark.rutland@arm.com" , "shawnguo@kernel.org" , "linux-arm-kernel@lists.infradead.org" , "computersforpeace@gmail.com" , "frieder.schrempf@exceet.de" , "linux-kernel@vger.kernel.org" , Yogesh Narayan Gaur Subject: [PATCH v5 1/7] spi: add support for octal mode I/O data transfer Thread-Topic: [PATCH v5 1/7] spi: add support for octal mode I/O data transfer Thread-Index: AQHUiuOnnN1e2/pCsEWSJd8HL2GM2A== Date: Mon, 3 Dec 2018 08:39:06 +0000 Message-ID: <1543826226-30898-2-git-send-email-yogeshnarayan.gaur@nxp.com> References: <1543826226-30898-1-git-send-email-yogeshnarayan.gaur@nxp.com> In-Reply-To: <1543826226-30898-1-git-send-email-yogeshnarayan.gaur@nxp.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-clientproxiedby: SG2PR04CA0143.apcprd04.prod.outlook.com (2603:1096:3:16::27) To VI1PR04MB5726.eurprd04.prod.outlook.com (2603:10a6:803:e4::24) authentication-results: spf=none (sender IP is ) smtp.mailfrom=yogeshnarayan.gaur@nxp.com; x-ms-exchange-messagesentrepresentingtype: 1 x-originating-ip: [14.143.30.134] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;VI1PR04MB4718;6:77AOlIlifkJa2jxl+u29EB6V8uewPQP5yKENK5Jfa6jhKpl2MCHcMxoecpdfLvFaWD18ed8P/RvTfsMd6zZXMlztpd/X10/9xj/zUqIMdp6foR00/JJa/iRhTWaNoxCpNunJffjCWTatRT7/K8OWJpHwBO2H3TQvNsZPfS7IidglK7f4R34QguPBIJoXHQvHNuUUX3Rm7Z3lsvR9Dc/Ykcwtf9N/ZJpicLWW8g+Ba7aVnKje5DmgfXqjj7Uvv0ntP1RcIIhJ+1/0IpEyqGdnJoSYMnP0MYrrPCI0IvNs1bXYtUZW60AclS5i+h5E1Va1oaPboI/10KS4d7sd80ltelCp/qvf2O9zTccWuB1AWKHniRXmmdx50H60BXdvnKx4WedaWFZscaUwGG9554ZbQ6e69X36nCkpc8UwkYq5+TddPfXs4O4Ds9eiFiEecbKxs6KquescT0GUK+P27+CfZQ==;5:prAfx4itjM9ov4NNSKXOH+3qvYnUzpOCLnQ/1oUP67bQX1CPqcYa/cRV9PUDSlBxjLWpAz0cVkkWW7OeGi9APNP6CcyISpZfuZAUWej1VzC5acYDvLLoHhYr0e2L+gF8at1Vht3gLBOXn42vmuMcHtWAGSV5QcDGGA1kr0dk/CM=;7:P8AjbGMtlytgYBgrUOA5INsGWv6YsG3HApC69lSFfcKAXz58wep13xxumuaZy6CFLlEhFcNuOyigG3t7dEsr3XJCQK+17/knJr89l9ylTqvBI9hr2jcGLIC/o4vWQeQNG/+JMfsXOGjxSr/rdITr0A== x-ms-office365-filtering-correlation-id: 0f4eb8d1-26e6-406e-dfff-08d658fac930 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: BCL:0;PCL:0;RULEID:(2390098)(7020095)(4652040)(8989299)(5600074)(711020)(4618075)(4534185)(7168020)(4627221)(201703031133081)(201702281549075)(8990200)(2017052603328)(7153060)(7193020);SRVR:VI1PR04MB4718; x-ms-traffictypediagnostic: VI1PR04MB4718: x-microsoft-antispam-prvs: x-ms-exchange-senderadcheck: 1 x-exchange-antispam-report-cfa-test: BCL:0;PCL:0;RULEID:(8211001083)(6040522)(2401047)(8121501046)(5005006)(93006095)(93001095)(3231455)(999002)(944501493)(52105112)(3002001)(10201501046)(6055026)(148016)(149066)(150057)(6041310)(20161123562045)(201703131423095)(201702281528075)(20161123555045)(201703061421075)(201703061406153)(20161123564045)(20161123560045)(20161123558120)(201708071742011)(7699051)(76991095);SRVR:VI1PR04MB4718;BCL:0;PCL:0;RULEID:;SRVR:VI1PR04MB4718; x-forefront-prvs: 08756AC3C8 x-forefront-antispam-report: SFV:NSPM;SFS:(10009020)(346002)(376002)(396003)(136003)(366004)(39860400002)(199004)(189003)(7736002)(99286004)(6486002)(76176011)(305945005)(6512007)(6506007)(53936002)(66066001)(386003)(105586002)(106356001)(68736007)(256004)(71190400001)(71200400001)(5660300001)(110136005)(55236004)(54906003)(7416002)(14454004)(86362001)(478600001)(575784001)(6116002)(3846002)(25786009)(186003)(2201001)(2501003)(97736004)(2906002)(81156014)(81166006)(6436002)(8676002)(4326008)(486006)(78486014)(36756003)(102836004)(52116002)(26005)(39060400002)(2616005)(8936002)(446003)(11346002)(316002)(476003);DIR:OUT;SFP:1101;SCL:1;SRVR:VI1PR04MB4718;H:VI1PR04MB5726.eurprd04.prod.outlook.com;FPR:;SPF:None;LANG:en;PTR:InfoNoRecords;A:1;MX:1; received-spf: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) x-microsoft-antispam-message-info: mbX1AN693ki/aVaHhyAfXzQ/xc5AdtKpRGnfzkZYlBBQjVmNko9TlbX6XDtsY3KMJ0+JYIUwXStFJ8RnqEr9UojdvFduiqt7XUf3QvTRCxsNHKaMG9D882Dik8K8BcpqKezVGSpLzbAYzPPoylvcnZWcu/ScQxXWvM0WRyfgcf4QhhbF8xFChHebirWKnBChX1S+02wYo1B6CGuCuZhbfVhhAgadSSjFCxc1jDNuaVjSAzsVSucCcIYR9D2zPL6zFwBCGpgnL2KpxPMCOrwDFh+8HDFpdmvF+XhKWP12YwJBVA6ySanHlTDNe0AqqqZkNYAERlVMANdtkTk9/G0ei6OTVFo77Z3+exyK2srByuc= spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 0f4eb8d1-26e6-406e-dfff-08d658fac930 X-MS-Exchange-CrossTenant-originalarrivaltime: 03 Dec 2018 08:39:06.6280 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-Transport-CrossTenantHeadersStamped: VI1PR04MB4718 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add flags for Octal mode I/O data transfer Required for the SPI controller which can do the data transfer (TX/RX) on 8 data lines e.g. NXP FlexSPI controller. SPI_TX_OCTAL: transmit with 8 wires SPI_RX_OCTAL: receive with 8 wires Signed-off-by: Yogesh Gaur Reviewed-by: Boris Brezillon --- Changes for v5: - Modified string 'octo' with 'octal'. Changes for v4: - Rebase on top of v4.20-rc2 Changes for v3: - Modified string 'octal' with 'octo'. - Add octo mode support in spi_setup(). Changes for v2: - Incorporated review comments of Boris. --- drivers/spi/spi.c | 12 ++++++++++-- include/linux/spi/spi.h | 4 +++- 2 files changed, 13 insertions(+), 3 deletions(-) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 6ca5940..95249b8 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -1617,6 +1617,9 @@ static int of_spi_parse_dt(struct spi_controller *ctl= r, struct spi_device *spi, case 4: spi->mode |=3D SPI_TX_QUAD; break; + case 8: + spi->mode |=3D SPI_TX_OCTAL; + break; default: dev_warn(&ctlr->dev, "spi-tx-bus-width %d not supported\n", @@ -1635,6 +1638,9 @@ static int of_spi_parse_dt(struct spi_controller *ctl= r, struct spi_device *spi, case 4: spi->mode |=3D SPI_RX_QUAD; break; + case 8: + spi->mode |=3D SPI_RX_OCTAL; + break; default: dev_warn(&ctlr->dev, "spi-rx-bus-width %d not supported\n", @@ -2823,7 +2829,8 @@ int spi_setup(struct spi_device *spi) /* if it is SPI_3WIRE mode, DUAL and QUAD should be forbidden */ if ((spi->mode & SPI_3WIRE) && (spi->mode & - (SPI_TX_DUAL | SPI_TX_QUAD | SPI_RX_DUAL | SPI_RX_QUAD))) + (SPI_TX_DUAL | SPI_TX_QUAD | SPI_TX_OCTAL | + SPI_RX_DUAL | SPI_RX_QUAD | SPI_RX_OCTAL))) return -EINVAL; /* help drivers fail *cleanly* when they need options * that aren't supported with their current controller @@ -2832,7 +2839,8 @@ int spi_setup(struct spi_device *spi) */ bad_bits =3D spi->mode & ~(spi->controller->mode_bits | SPI_CS_WORD); ugly_bits =3D bad_bits & - (SPI_TX_DUAL | SPI_TX_QUAD | SPI_RX_DUAL | SPI_RX_QUAD); + (SPI_TX_DUAL | SPI_TX_QUAD | SPI_TX_OCTAL | + SPI_RX_DUAL | SPI_RX_QUAD | SPI_RX_OCTAL); if (ugly_bits) { dev_warn(&spi->dev, "setup: ignoring unsupported mode bits %x\n", diff --git a/include/linux/spi/spi.h b/include/linux/spi/spi.h index 6be77fa..0c1ca5d 100644 --- a/include/linux/spi/spi.h +++ b/include/linux/spi/spi.h @@ -154,7 +154,9 @@ struct spi_device { #define SPI_TX_QUAD 0x200 /* transmit with 4 wires */ #define SPI_RX_DUAL 0x400 /* receive with 2 wires */ #define SPI_RX_QUAD 0x800 /* receive with 4 wires */ -#define SPI_CS_WORD 0x1000 /* toggle cs after each word */ +#define SPI_CS_WORD 0x1000 /* toggle cs after each word */ +#define SPI_TX_OCTAL 0x2000 /* transmit with 8 wires */ +#define SPI_RX_OCTAL 0x4000 /* receive with 8 wires */ int irq; void *controller_state; void *controller_data; --=20 2.7.4