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>,
Mark Brown <broonie@kernel.org>,
Nicolas Ferre <nicolas.ferre@microchip.com>,
Alexandre Belloni <alexandre.belloni@bootlin.com>,
Ludovic Desroches <ludovic.desroches@microchip.com>
Cc: Pratyush Yadav <p.yadav@ti.com>, <linux-mtd@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-spi@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
Sekhar Nori <nsekhar@ti.com>
Subject: [PATCH v3 11/12] mtd: spi-nor: Disable Octal DTR mode on suspend.
Date: Fri, 13 Mar 2020 21:16:44 +0530 [thread overview]
Message-ID: <20200313154645.29293-12-p.yadav@ti.com> (raw)
In-Reply-To: <20200313154645.29293-1-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/spi-nor.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/drivers/mtd/spi-nor/spi-nor.c b/drivers/mtd/spi-nor/spi-nor.c
index fcc087ff5148..32f7ecbc38d4 100644
--- a/drivers/mtd/spi-nor/spi-nor.c
+++ b/drivers/mtd/spi-nor/spi-nor.c
@@ -5379,6 +5379,23 @@ 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)
{
@@ -5564,6 +5581,7 @@ int spi_nor_scan(struct spi_nor *nor, const char *name,
mtd->size = 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:[~2020-03-13 15:47 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-13 15:46 [PATCH v3 00/12] mtd: spi-nor: add xSPI Octal DTR support Pratyush Yadav
2020-03-13 15:46 ` [PATCH v3 01/12] spi: spi-mem: allow specifying whether an op is DTR or not Pratyush Yadav
2020-03-13 15:46 ` [PATCH v3 02/12] spi: atmel-quadspi: reject DTR ops Pratyush Yadav
2020-03-13 15:46 ` [PATCH v3 03/12] spi: spi-mem: allow specifying a command's extension Pratyush Yadav
2020-03-13 15:46 ` [PATCH v3 04/12] mtd: spi-nor: add support for DTR protocol Pratyush Yadav
2020-03-13 15:46 ` [PATCH v3 05/12] mtd: spi-nor: default to address width of 3 for configurable widths Pratyush Yadav
2020-03-13 15:46 ` [PATCH v3 06/12] mtd: spi-nor: get command opcode extension type from BFPT Pratyush Yadav
2020-03-13 15:46 ` [PATCH v3 07/12] mtd: spi-nor: parse xSPI Profile 1.0 table Pratyush Yadav
2020-03-13 15:46 ` [PATCH v3 08/12] mtd: spi-nor: use dummy cycle and address width info from SFDP Pratyush Yadav
2020-03-13 15:46 ` [PATCH v3 09/12] mtd: spi-nor: enable octal DTR mode when possible Pratyush Yadav
2020-03-13 15:46 ` [PATCH v3 10/12] mtd: spi-nor: perform a Soft Reset on shutdown Pratyush Yadav
2020-03-13 15:46 ` Pratyush Yadav [this message]
2020-03-13 15:46 ` [PATCH v3 12/12] mtd: spi-nor: add support for Cypress Semper flash Pratyush Yadav
2020-03-13 15:50 ` [PATCH v3 00/12] mtd: spi-nor: add xSPI Octal DTR support Pratyush Yadav
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