From: Pratyush Yadav <p.yadav@ti.com>
To: Tudor Ambarus <tudor.ambarus@microchip.com>,
Miquel Raynal <miquel.raynal@bootlin.com>,
Richard Weinberger <richard@nod.at>,
Vignesh Raghavendra <vigneshr@ti.com>,
"open list:SPI NOR SUBSYSTEM" <linux-mtd@lists.infradead.org>,
open list <linux-kernel@vger.kernel.org>
Cc: Pratyush Yadav <p.yadav@ti.com>, Sekhar Nori <nsekhar@ti.com>,
Boris Brezillon <boris.brezillon@collabora.com>
Subject: [PATCH v12 11/14] mtd: spi-nor: core: disable Octal DTR mode on suspend.
Date: Thu, 3 Sep 2020 22:43:10 +0530 [thread overview]
Message-ID: <20200903171313.18741-12-p.yadav@ti.com> (raw)
In-Reply-To: <20200903171313.18741-1-p.yadav@ti.com>
On resume, the init procedure will be run that will re-enable it.
Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
---
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 a96d32bcc4f5..91dd8394a5ca 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -3195,6 +3195,23 @@ 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)
{
@@ -3389,6 +3406,7 @@ 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) {
--
2.25.0
next prev parent reply other threads:[~2020-09-03 17:14 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-03 17:12 [PATCH v12 00/14] mtd: spi-nor: add xSPI Octal DTR support Pratyush Yadav
2020-09-03 17:13 ` [PATCH v12 01/14] mtd: spi-nor: core: add spi_nor_{read,write}_reg() helpers Pratyush Yadav
2020-09-03 17:13 ` [PATCH v12 02/14] mtd: spi-nor: core: add spi_nor_controller_ops_erase helper Pratyush Yadav
2020-09-03 17:13 ` [PATCH v12 03/14] mtd: spi-nor: add support for DTR protocol Pratyush Yadav
2020-09-03 17:13 ` [PATCH v12 04/14] mtd: spi-nor: sfdp: get command opcode extension type from BFPT Pratyush Yadav
2020-09-03 17:13 ` [PATCH v12 05/14] mtd: spi-nor: sfdp: parse xSPI Profile 1.0 table Pratyush Yadav
2020-09-03 17:13 ` [PATCH v12 06/14] mtd: spi-nor: core: use dummy cycle and address width info from SFDP Pratyush Yadav
2020-09-03 17:13 ` [PATCH v12 07/14] mtd: spi-nor: core: do 2 byte reads for SR and FSR in DTR mode Pratyush Yadav
2020-09-03 17:13 ` [PATCH v12 08/14] mtd: spi-nor: core: enable octal DTR mode when possible Pratyush Yadav
2020-09-03 17:13 ` [PATCH v12 09/14] mtd: spi-nor: sfdp: detect Soft Reset sequence support from BFPT Pratyush Yadav
2020-09-03 17:13 ` [PATCH v12 10/14] mtd: spi-nor: core: perform a Soft Reset on shutdown Pratyush Yadav
2020-09-03 17:13 ` Pratyush Yadav [this message]
2020-09-03 17:13 ` [PATCH v12 12/14] mtd: spi-nor: core: expose spi_nor_default_setup() in core.h Pratyush Yadav
2020-09-03 17:13 ` [PATCH v12 13/14] mtd: spi-nor: spansion: add support for Cypress Semper flash Pratyush Yadav
2020-09-03 17:13 ` [PATCH v12 14/14] mtd: spi-nor: micron-st: allow using MT35XU512ABA in Octal DTR mode Pratyush Yadav
2020-09-15 6:46 ` [PATCH v12 00/14] mtd: spi-nor: add xSPI Octal DTR support Vignesh Raghavendra
2020-09-15 7:47 ` Pratyush Yadav
2020-09-16 6:16 ` Vignesh Raghavendra
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