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=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MSGID_FROM_MTA_HEADER,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable 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 A2B08C55186 for ; Fri, 24 Apr 2020 06:16:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8368C20700 for ; Fri, 24 Apr 2020 06:16:47 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=nxp.com header.i=@nxp.com header.b="EHnLR5s6" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726488AbgDXGQq (ORCPT ); Fri, 24 Apr 2020 02:16:46 -0400 Received: from mail-eopbgr70050.outbound.protection.outlook.com ([40.107.7.50]:17403 "EHLO EUR04-HE1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1725868AbgDXGQq (ORCPT ); Fri, 24 Apr 2020 02:16:46 -0400 ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=GU4aGUqZXGmvLXeeOm+VMVl9VUI/+Vl5ckY0Tl09i4SEvdbd2I1CodIzviL7us21VeNOCgbn27wYAeblWW3jjrFzq4qZRM8d2yAp6LrNDlFr53h6OSPnvEh+e8DUP7bmasIXI+9QAcuXr6or3MMHg9bqNeH6/QhT4MzSDs9+BNcLgsUTxztkmyCvd0+92fnhosbPbFaJQRP9CAkVcBq5aMXqtnJhVBvZXSqZl2233kxB1hAGGvwAfRAwlMR4QsJHemwRd74szNPEZkplDmRtirNjpQuzdIdc2TO75ST5onTWUj9RthxK/rq0TvAQjlWWp7OnzfhiB5utUCEC3OWPUg== 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=aCTaU5dEXps+rcxp1EQhmuEkT8hv9nYsEW3h8THFJzc=; b=VKZzDf6YScJzfPXoappLFGLqylarZwcg/CutAAem9NSlpetvymOhGVh9re/fU0LN0OcFz7yKtP8cw4CB1Z3Ej2kyIZpqqWGTlimDRtDX+EW+ob9ZDu51GrA4vqaKt6+HP9O5N7xcvCs8CnMrhKUgPWWaLBihqYXv3WEgHE9pudbBO4gwZgxQN9GrmlKyDPPCjlrl4ZxVGpMSi9yH2b9N9L8p8ogKaBARYMgJ3ZazEmYU8ccc13dEcfqLikrb0L01iq2xXrbK+KgbsSPbJwupBfDj/b5QzEM5Nbj/L0oAMmSXQrYMBZ2+zBElmWu59WnEZVQ0s+qMQ9luD711e5encQ== 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=aCTaU5dEXps+rcxp1EQhmuEkT8hv9nYsEW3h8THFJzc=; b=EHnLR5s6an99RIXXz/2Uh6fkonXkHNFK9GEd+OjgBRduhAJY1ZuaYFXlisv7V0X/zpCxlWuECgp4YdYBaIRKs+QEvs8iYuD87BMxQOa/2c3laOQ16MehgFj/W3GwgcvekHSaX01SQXsj55ok+7uOFiB7VB40/VisE8i71kN3DJc= Authentication-Results: spf=none (sender IP is ) smtp.mailfrom=peng.ma@nxp.com; Received: from AM7PR04MB7016.eurprd04.prod.outlook.com (2603:10a6:20b:11e::22) by AM7PR04MB7191.eurprd04.prod.outlook.com (2603:10a6:20b:11c::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2937.22; Fri, 24 Apr 2020 06:16:42 +0000 Received: from AM7PR04MB7016.eurprd04.prod.outlook.com ([fe80::7dfb:6472:5abb:c5e0]) by AM7PR04MB7016.eurprd04.prod.outlook.com ([fe80::7dfb:6472:5abb:c5e0%3]) with mapi id 15.20.2937.020; Fri, 24 Apr 2020 06:16:42 +0000 From: Peng Ma To: broonie@kernel.org, leoyang.li@nxp.com Cc: linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, Peng Ma Subject: [PATCH] spi: spi-fsl-dspi: Adding shutdown hook Date: Fri, 24 Apr 2020 14:12:16 +0800 Message-Id: <20200424061216.27445-1-peng.ma@nxp.com> X-Mailer: git-send-email 2.17.1 Content-Type: text/plain X-ClientProxiedBy: SG2PR06CA0180.apcprd06.prod.outlook.com (2603:1096:1:1e::34) To AM7PR04MB7016.eurprd04.prod.outlook.com (2603:10a6:20b:11e::22) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (119.31.174.73) by SG2PR06CA0180.apcprd06.prod.outlook.com (2603:1096:1:1e::34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2937.13 via Frontend Transport; Fri, 24 Apr 2020 06:16:40 +0000 X-Mailer: git-send-email 2.17.1 X-Originating-IP: [119.31.174.73] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 530e8f99-62dd-4f05-eed6-08d7e8170e52 X-MS-TrafficTypeDiagnostic: AM7PR04MB7191:|AM7PR04MB7191: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:2733; X-Forefront-PRVS: 03838E948C X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AM7PR04MB7016.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:(4636009)(366004)(396003)(136003)(346002)(39860400002)(376002)(478600001)(52116002)(6486002)(4326008)(5660300002)(6636002)(1076003)(6666004)(2906002)(69590400007)(26005)(6506007)(956004)(2616005)(16526019)(66946007)(186003)(66476007)(316002)(86362001)(66556008)(8676002)(36756003)(8936002)(81156014)(44832011)(6512007);DIR:OUT;SFP:1101; Received-SPF: None (protection.outlook.com: nxp.com does not designate permitted sender hosts) X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-MS-Exchange-AntiSpam-MessageData: 3i/dQoESFBhcvehviynds1NaVSSadyz/XBoAW4iMNCIoxF2drorAGVIxI9Mt5ACr41fommSOQjaG/6vJMsmKY8OmztTAH0eMFW+8JqV32+Wr4dWmoXpoX+AIMbdBgF7bwrtr5mLNfOC/4oHYfCHGQA== X-OriginatorOrg: nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 530e8f99-62dd-4f05-eed6-08d7e8170e52 X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Apr 2020 06:16:42.1110 (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: q7E4hvLgmEWn3TUKdJpl86Uhx01IW9ZZNYpu0MVuomXeIsvpjCAbmmSYeQuaq5ap X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM7PR04MB7191 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org We need to ensure dspi controller could be stopped in order for kexec to start the next kernel. So add the shutdown operation support. Signed-off-by: Peng Ma --- drivers/spi/spi-fsl-dspi.c | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c index 50e41f66a2d7..685afdf9e807 100644 --- a/drivers/spi/spi-fsl-dspi.c +++ b/drivers/spi/spi-fsl-dspi.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0+ // // Copyright 2013 Freescale Semiconductor, Inc. +// Copyright 2020 NXP // // Freescale DSPI driver // This file contains a driver for the Freescale DSPI @@ -26,6 +27,9 @@ #define SPI_MCR_CLR_TXF BIT(11) #define SPI_MCR_CLR_RXF BIT(10) #define SPI_MCR_XSPI BIT(3) +#define SPI_MCR_DIS_TXF BIT(13) +#define SPI_MCR_DIS_RXF BIT(12) +#define SPI_MCR_HALT BIT(0) #define SPI_TCR 0x08 #define SPI_TCR_GET_TCNT(x) (((x) & GENMASK(31, 16)) >> 16) @@ -1417,6 +1421,24 @@ static int dspi_remove(struct platform_device *pdev) return 0; } +static void dspi_shutdown(struct platform_device *pdev) +{ + struct spi_controller *ctlr = platform_get_drvdata(pdev); + struct fsl_dspi *dspi = spi_controller_get_devdata(ctlr); + + /* Disable RX and TX */ + regmap_update_bits(dspi->regmap, SPI_MCR, + SPI_MCR_DIS_TXF | SPI_MCR_DIS_RXF, + SPI_MCR_DIS_TXF | SPI_MCR_DIS_RXF); + + /* Stop Running */ + regmap_update_bits(dspi->regmap, SPI_MCR, SPI_MCR_HALT, SPI_MCR_HALT); + + dspi_release_dma(dspi); + clk_disable_unprepare(dspi->clk); + spi_unregister_controller(dspi->ctlr); +} + static struct platform_driver fsl_dspi_driver = { .driver.name = DRIVER_NAME, .driver.of_match_table = fsl_dspi_dt_ids, @@ -1424,6 +1446,7 @@ static struct platform_driver fsl_dspi_driver = { .driver.pm = &dspi_pm, .probe = dspi_probe, .remove = dspi_remove, + .shutdown = dspi_shutdown, }; module_platform_driver(fsl_dspi_driver); -- 2.17.1