Messages in this thread Patch in this message | | | From | Pratyush Yadav <> | Subject | [PATCH v12 11/14] mtd: spi-nor: core: disable Octal DTR mode on suspend. | Date | Thu, 3 Sep 2020 22:43:10 +0530 |
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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> --- 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
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