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| author | Adrian Hunter <adrian.hunter@nokia.com> | 2010-02-19 15:39:52 +0100 |
|---|---|---|
| committer | David Woodhouse <David.Woodhouse@intel.com> | 2011-01-06 15:34:19 +0000 |
| commit | cf24dc85ff29a41abd8e73730e5feb22b2666bd3 (patch) | |
| tree | 5983bf84fa5a9ea22863df1efc8fba121619dbf8 | |
| parent | 8fffed8cfdd511056cb17c70f525017fbb643b94 (diff) | |
| download | linux-cf24dc85ff29a41abd8e73730e5feb22b2666bd3.tar.gz linux-cf24dc85ff29a41abd8e73730e5feb22b2666bd3.tar.bz2 linux-cf24dc85ff29a41abd8e73730e5feb22b2666bd3.zip | |
mtd: OneNAND: add enable / disable methods to onenand_chip
Add enable / disable methods called from get_device() / release_device().
These can be used, for example, to allow the driver to prevent the voltage
regulator from being put to sleep while OneNAND is in use.
Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| -rw-r--r-- | drivers/mtd/onenand/onenand_base.c | 4 | ||||
| -rw-r--r-- | include/linux/mtd/onenand.h | 2 |
2 files changed, 6 insertions, 0 deletions
diff --git a/drivers/mtd/onenand/onenand_base.c b/drivers/mtd/onenand/onenand_base.c index 2d7c90de3144..2edef5868ace 100644 --- a/drivers/mtd/onenand/onenand_base.c +++ b/drivers/mtd/onenand/onenand_base.c @@ -948,6 +948,8 @@ static int onenand_get_device(struct mtd_info *mtd, int new_state) if (this->state == FL_READY) { this->state = new_state; spin_unlock(&this->chip_lock); + if (new_state != FL_PM_SUSPENDED && this->enable) + this->enable(mtd); break; } if (new_state == FL_PM_SUSPENDED) { @@ -974,6 +976,8 @@ static void onenand_release_device(struct mtd_info *mtd) { struct onenand_chip *this = mtd->priv; + if (this->state != FL_PM_SUSPENDED && this->disable) + this->disable(mtd); /* Release the chip */ spin_lock(&this->chip_lock); this->state = FL_READY; diff --git a/include/linux/mtd/onenand.h b/include/linux/mtd/onenand.h index 6da3fe314828..ae418e41d8f5 100644 --- a/include/linux/mtd/onenand.h +++ b/include/linux/mtd/onenand.h @@ -118,6 +118,8 @@ struct onenand_chip { int (*chip_probe)(struct mtd_info *mtd); int (*block_markbad)(struct mtd_info *mtd, loff_t ofs); int (*scan_bbt)(struct mtd_info *mtd); + int (*enable)(struct mtd_info *mtd); + int (*disable)(struct mtd_info *mtd); struct completion complete; int irq; |