lkml.org 
[lkml]   [2020]   [Jul]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v11 11/14] mtd: spi-nor: core: disable Octal DTR mode on suspend.
Date
From: Pratyush Yadav <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 f55c062a7bd5..a263196d970f 100644
--- a/drivers/mtd/spi-nor/core.c
+++ b/drivers/mtd/spi-nor/core.c
@@ -3193,6 +3193,23 @@ 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)
{
@@ -3387,6 +3404,7 @@ 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) {
--
2.27.0
\
 
 \ /
  Last update: 2020-07-23 15:13    [W:0.089 / U:0.112 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site