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mtd: spi-nor: core: disable Octal DTR mode on suspend.

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On resume, the init procedure will be run that will re-enable it.

Signed-off-by: Pratyush Yadav <p.yadav@ti.com>
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Link: https://lore.kernel.org/r/20201005153138.6437-14-p.yadav@ti.com
This commit is contained in:
Pratyush Yadav 2020-10-05 21:01:36 +05:30 committed by Vignesh Raghavendra
parent d73ee7534c
commit 1b65c43f70
1 changed files with 15 additions and 0 deletions
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15
drivers/mtd/spi-nor/core.c
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@ -3216,6 +3216,20 @@ static void spi_nor_soft_reset(struct spi_nor *nor)
usleep_range(SPI_NOR_SRST_SLEEP_MIN, SPI_NOR_SRST_SLEEP_MAX); 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 */ /* mtd resume handler */
static void spi_nor_resume(struct mtd_info *mtd) static void spi_nor_resume(struct mtd_info *mtd)
{ {
@ -3421,6 +3435,7 @@ int spi_nor_scan(struct spi_nor *nor, const char *name,
mtd->size = nor->params->size; mtd->size = nor->params->size;
mtd->_erase = spi_nor_erase; mtd->_erase = spi_nor_erase;
mtd->_read = spi_nor_read; mtd->_read = spi_nor_read;
mtd->_suspend = spi_nor_suspend;
mtd->_resume = spi_nor_resume; mtd->_resume = spi_nor_resume;
if (nor->params->locking_ops) { if (nor->params->locking_ops) {