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>,
<linux-mtd@lists.infradead.org>, <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 v16 13/15] mtd: spi-nor: core: disable Octal DTR mode on suspend.
Date: Mon, 5 Oct 2020 21:01:36 +0530 [thread overview]
Message-ID: <20201005153138.6437-14-p.yadav@ti.com> (raw)
In-Reply-To: <20201005153138.6437-1-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>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
---
drivers/mtd/spi-nor/core.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
index feb4310ff6dc..ff592468cc15 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -3217,6 +3217,20 @@ 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);
+ int ret;
+
+ /* Disable octal DTR mode if we enabled it. */
+ ret = spi_nor_octal_dtr_enable(nor, false);
+ if (ret)
+ dev_err(nor->dev, "suspend() failed\n");
+
+ return ret;
+}
+
/* mtd resume handler */
static void spi_nor_resume(struct mtd_info *mtd)
{
@@ -3420,6 +3434,7 @@ 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) {
--
2.28.0
next prev parent reply other threads:[~2020-10-05 15:36 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-05 15:31 [PATCH v16 00/15] mtd: spi-nor: add xSPI Octal DTR support Pratyush Yadav
2020-10-05 15:31 ` [PATCH v16 01/15] mtd: spi-nor: core: use EOPNOTSUPP instead of ENOTSUPP Pratyush Yadav
2020-10-05 15:31 ` [PATCH v16 02/15] mtd: spi-nor: add spi_nor_controller_ops_{read_reg,write_reg,erase}() Pratyush Yadav
2020-10-05 15:31 ` [PATCH v16 03/15] mtd: spi-nor: add support for DTR protocol Pratyush Yadav
2020-10-05 15:31 ` [PATCH v16 04/15] mtd: spi-nor: sfdp: get command opcode extension type from BFPT Pratyush Yadav
2020-10-05 15:31 ` [PATCH v16 05/15] mtd: spi-nor: sfdp: parse xSPI Profile 1.0 table Pratyush Yadav
2020-10-27 9:58 ` Tudor.Ambarus
2020-10-05 15:31 ` [PATCH v16 06/15] mtd: spi-nor: core: use dummy cycle and address width info from SFDP Pratyush Yadav
2020-10-05 15:31 ` [PATCH v16 07/15] mtd: spi-nor: core: do 2 byte reads for SR and FSR in DTR mode Pratyush Yadav
2020-10-05 15:31 ` [PATCH v16 08/15] mtd: spi-nor: Introduce SNOR_F_IO_MODE_EN_VOLATILE Pratyush Yadav
2020-10-05 15:31 ` [PATCH v16 09/15] mtd: spi-nor: Parse SFDP SCCR Map Pratyush Yadav
2020-10-05 15:31 ` [PATCH v16 10/15] mtd: spi-nor: core: enable octal DTR mode when possible Pratyush Yadav
2020-10-05 15:31 ` [PATCH v16 11/15] mtd: spi-nor: sfdp: detect Soft Reset sequence support from BFPT Pratyush Yadav
2020-10-05 15:31 ` [PATCH v16 12/15] mtd: spi-nor: core: perform a Soft Reset on shutdown Pratyush Yadav
2020-10-05 15:31 ` Pratyush Yadav [this message]
2020-10-05 15:31 ` [PATCH v16 14/15] mtd: spi-nor: spansion: add support for Cypress Semper flash Pratyush Yadav
2020-11-07 7:58 ` Vignesh Raghavendra
2020-11-09 11:45 ` Pratyush Yadav
2020-11-09 13:28 ` Tudor.Ambarus
2020-10-05 15:31 ` [PATCH v16 15/15] mtd: spi-nor: micron-st: allow using MT35XU512ABA in Octal DTR mode Pratyush Yadav
2020-10-06 8:11 ` Tudor.Ambarus
2020-10-28 7:53 ` [PATCH v16 00/15] mtd: spi-nor: add xSPI Octal DTR support Tudor.Ambarus
2020-10-28 12:49 ` Pratyush Yadav
2020-10-28 15:21 ` Tudor.Ambarus
2020-10-28 20:02 ` Pratyush Yadav
2020-10-29 6:26 ` Vignesh Raghavendra
2020-11-09 17:25 ` Vignesh Raghavendra
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