From patchwork Fri Apr 24 18:44:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pratyush Yadav X-Patchwork-Id: 11508779 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 36EB814B4 for ; Fri, 24 Apr 2020 18:45:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 202C12098B for ; Fri, 24 Apr 2020 18:45:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="ltmrzcJQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727021AbgDXSpY (ORCPT ); Fri, 24 Apr 2020 14:45:24 -0400 Received: from fllv0015.ext.ti.com ([198.47.19.141]:44062 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729360AbgDXSpU (ORCPT ); Fri, 24 Apr 2020 14:45:20 -0400 Received: from fllv0035.itg.ti.com ([10.64.41.0]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 03OIj7A9102883; Fri, 24 Apr 2020 13:45:07 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1587753907; bh=KJREDstGLmJYJHBspOm69DwmY8ReMTe1jsWNkxWmQ+Y=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=ltmrzcJQQYrl+zhv7cd0U5jD1hVsoffl+1QmPcCL5epsgQC7NZOISpTzl1GTIW86V zYAHmNM05aXPSY8aZ3wWvxfJWdEsHK+aiDsMPXyxb1IGDkQ2bqnbcTrhmAlcR87CwO wbShEMNcK9OUEPkfV3k0IrkQ2ecBDvT+gMso1fao= Received: from DFLE115.ent.ti.com (dfle115.ent.ti.com [10.64.6.36]) by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTP id 03OIj7Yu086601; Fri, 24 Apr 2020 13:45:07 -0500 Received: from DFLE112.ent.ti.com (10.64.6.33) by DFLE115.ent.ti.com (10.64.6.36) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3; Fri, 24 Apr 2020 13:45:07 -0500 Received: from lelv0327.itg.ti.com (10.180.67.183) by DFLE112.ent.ti.com (10.64.6.33) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3 via Frontend Transport; Fri, 24 Apr 2020 13:45:07 -0500 Received: from pratyush-OptiPlex-790.dhcp.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 03OIiAaJ047967; Fri, 24 Apr 2020 13:45:04 -0500 From: Pratyush Yadav To: Tudor Ambarus , Miquel Raynal , Richard Weinberger , Vignesh Raghavendra , Mark Brown , Nicolas Ferre , Alexandre Belloni , Ludovic Desroches , , , , CC: Pratyush Yadav , Sekhar Nori Subject: [PATCH v4 13/16] mtd: spi-nor: Disable Octal DTR mode on suspend. Date: Sat, 25 Apr 2020 00:14:07 +0530 Message-ID: <20200424184410.8578-14-p.yadav@ti.com> X-Mailer: git-send-email 2.25.0 In-Reply-To: <20200424184410.8578-1-p.yadav@ti.com> References: <20200424184410.8578-1-p.yadav@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org On resume, the init procedure will be run that will re-enable it. Signed-off-by: Pratyush Yadav --- drivers/mtd/spi-nor/core.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c index b0f94d6d28bf..b9b9c2b9a3da 100644 --- a/drivers/mtd/spi-nor/core.c +++ b/drivers/mtd/spi-nor/core.c @@ -3227,6 +3227,23 @@ static void spi_nor_soft_reset(struct spi_nor *nor) usleep_range(SPI_NOR_SRST_SLEEP_MIN, SPI_NOR_SRST_SLEEP_MAX); } +/* mtd suspend handler */ +static int spi_nor_suspend(struct mtd_info *mtd) +{ + struct spi_nor *nor = mtd_to_spi_nor(mtd); + struct device *dev = nor->dev; + int ret; + + /* Disable octal DTR mode if we enabled it. */ + ret = spi_nor_octal_dtr_enable(nor, false); + if (ret) { + dev_err(dev, "suspend() failed\n"); + return ret; + } + + return 0; +} + /* mtd resume handler */ static void spi_nor_resume(struct mtd_info *mtd) { @@ -3420,6 +3437,7 @@ int spi_nor_scan(struct spi_nor *nor, const char *name, mtd->size = nor->params->size; mtd->_erase = spi_nor_erase; mtd->_read = spi_nor_read; + mtd->_suspend = spi_nor_suspend; mtd->_resume = spi_nor_resume; if (nor->params->locking_ops) {