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| author | Wolfgang Denk <wd@pollux.(none)> | 2005-11-02 14:29:12 +0100 |
|---|---|---|
| committer | Wolfgang Denk <wd@pollux.(none)> | 2005-11-02 14:29:12 +0100 |
| commit | 8e9655f863246db60c51140153186acc2afdc855 (patch) | |
| tree | 5bf681d78aaac91aac3ddaeef4972752cba33816 /drivers/nand/nand_base.c | |
| parent | ac7eb8a315e25863637a8d2c02af18815458b63f (diff) | |
| download | u-boot-imx-8e9655f863246db60c51140153186acc2afdc855.zip u-boot-imx-8e9655f863246db60c51140153186acc2afdc855.tar.gz u-boot-imx-8e9655f863246db60c51140153186acc2afdc855.tar.bz2 | |
* Add hook to NAND erase and implement nand_wait function.
Patch by Mike Rapoport, 01 Nov 2005
Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Diffstat (limited to 'drivers/nand/nand_base.c')
| -rw-r--r-- | drivers/nand/nand_base.c | 36 |
1 files changed, 33 insertions, 3 deletions
diff --git a/drivers/nand/nand_base.c b/drivers/nand/nand_base.c index a7ab8c2..9ec5af9 100644 --- a/drivers/nand/nand_base.c +++ b/drivers/nand/nand_base.c @@ -189,7 +189,11 @@ static void nand_release_device (struct mtd_info *mtd) spin_unlock (&this->chip_lock); } #else -#define nand_release_device(mtd) do {} while(0) +static void nand_release_device (struct mtd_info *mtd) +{ + struct nand_chip *this = mtd->priv; + this->select_chip(mtd, -1); /* De-select the NAND device */ +} #endif /** @@ -831,8 +835,34 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state) #else static int nand_wait(struct mtd_info *mtd, struct nand_chip *this, int state) { - /* TODO */ - return 0; + unsigned long timeo; + + if (state == FL_ERASING) + timeo = CFG_HZ * 400; + else + timeo = CFG_HZ * 20; + + if ((state == FL_ERASING) && (this->options & NAND_IS_AND)) + this->cmdfunc(mtd, NAND_CMD_STATUS_MULTI, -1, -1); + else + this->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1); + + reset_timer_masked(); + + while (1) { + if (get_timer_masked() > timeo) + return 0; + + if (this->dev_ready) { + if (this->dev_ready(mtd)) + break; + } else { + if (this->read_byte(mtd) & NAND_STATUS_READY) + break; + } + } + + return this->read_byte(mtd); } #endif |