From patchwork Fri May 22 22:40:39 2020
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
X-Patchwork-Submitter: Pratyush Yadav
X-Patchwork-Id: 214563
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=-9.9 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED,
DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS,
INCLUDES_PATCH,
MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS,
USER_AGENT_GIT 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 528B8C433E1
for ;
Fri, 22 May 2020 22:42:27 +0000 (UTC)
Received: from vger.kernel.org (vger.kernel.org [23.128.96.18])
by mail.kernel.org (Postfix) with ESMTP id 2BDFD206B6
for ;
Fri, 22 May 2020 22:42:27 +0000 (UTC)
Authentication-Results: mail.kernel.org;
dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com
header.b="pMQLrk7k"
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
id S1731414AbgEVWm0 (ORCPT );
Fri, 22 May 2020 18:42:26 -0400
Received: from lelv0142.ext.ti.com ([198.47.23.249]:35684 "EHLO
lelv0142.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
with ESMTP id S1731391AbgEVWmZ (ORCPT
); Fri, 22 May 2020 18:42:25 -0400
Received: from fllv0035.itg.ti.com ([10.64.41.0])
by lelv0142.ext.ti.com (8.15.2/8.15.2) with ESMTP id 04MMgDKh073081;
Fri, 22 May 2020 17:42:13 -0500
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com;
s=ti-com-17Q1; t=1590187333;
bh=70FeLQTtJkyVxVIkf8YVfc8xOxYWAvnHPgHRRqee0UU=;
h=From:To:CC:Subject:Date:In-Reply-To:References;
b=pMQLrk7kx5zz9v2jFKekQpY/P99QZjRwhtZwWnWpVcfdNu/9/Sh95ZvW3RKte9EEc
eoac8l/l0sKfjCel7IllGz9ocu+CrlCnPOxF3KjbEw+NOFlwpFwHF/wqAZI+0NOIu5
YUux8RVUy6hphr9rfPkWhZ0fSySbyXmSNEbsuj7M=
Received: from DFLE114.ent.ti.com (dfle114.ent.ti.com [10.64.6.35])
by fllv0035.itg.ti.com (8.15.2/8.15.2) with ESMTP id 04MMgDsl036713;
Fri, 22 May 2020 17:42:13 -0500
Received: from DFLE102.ent.ti.com (10.64.6.23) by DFLE114.ent.ti.com
(10.64.6.35) with Microsoft SMTP Server (version=TLS1_2,
cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1979.3;
Fri, 22 May 2020 17:42:12 -0500
Received: from lelv0326.itg.ti.com (10.180.67.84) by DFLE102.ent.ti.com
(10.64.6.23) 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, 22 May 2020 17:42:12 -0500
Received: from pratyush-OptiPlex-790.dhcp.ti.com (ileax41-snat.itg.ti.com
[10.172.224.153])
by lelv0326.itg.ti.com (8.15.2/8.15.2) with ESMTP id 04MMeh5n044559;
Fri, 22 May 2020 17:42:08 -0500
From: Pratyush Yadav
To: Tudor Ambarus ,
Miquel Raynal ,
Richard Weinberger ,
Vignesh Raghavendra , Mark Brown ,
Nicolas Ferre ,
Alexandre Belloni ,
Ludovic Desroches ,
Matthias Brugger ,
Michal Simek ,
, ,
, ,
CC: Pratyush Yadav , Sekhar Nori ,
Boris Brezillon ,
Mason Yang
Subject: [PATCH v8 16/19] mtd: spi-nor: core: disable Octal DTR mode on
suspend.
Date: Sat, 23 May 2020 04:10:39 +0530
Message-ID: <20200522224042.29970-17-p.yadav@ti.com>
X-Mailer: git-send-email 2.25.0
In-Reply-To: <20200522224042.29970-1-p.yadav@ti.com>
References: <20200522224042.29970-1-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 68559386f6f8..63ab588299f4 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -3239,6 +3239,23 @@ 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)
{
@@ -3432,6 +3449,7 @@ 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) {