hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

mtd: spi-nor: Add spi-nor mtd resume handler 

Implemented and populated spi-nor mtd PM handlers for resume ops.
spi-nor resume op re-initializes spi-nor flash to its probed
state by calling the newly implemented spi_nor_init() function.

Signed-off-by: Kamal Dasu <kdasu.kdev@gmail.com>
Signed-off-by: Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
This commit is contained in:
Kamal Dasu 2017-08-22 16:45:22 -04:00 committed by Cyrille Pitchen
parent 46dde01f6b
commit d6084fc83c
1 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/mtd/spi-nor/spi-nor.c
View File

@ -2670,6 +2670,19 @@ static int spi_nor_init(struct spi_nor *nor)
return 0;
}
/* mtd resume handler */
static void spi_nor_resume(struct mtd_info *mtd)
{
struct spi_nor *nor = mtd_to_spi_nor(mtd);
struct device *dev = nor->dev;
int ret;
/* re-initialize the nor chip */
ret = spi_nor_init(nor);
if (ret)
dev_err(dev, "resume() failed\n");
}
int spi_nor_scan(struct spi_nor *nor, const char *name,
const struct spi_nor_hwcaps *hwcaps)
{
@ -2746,6 +2759,7 @@ 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->_resume = spi_nor_resume;
/* NOR protection support for STmicro/Micron chips and similar */
if (JEDEC_MFR(info) == SNOR_MFR_MICRON ||