From 8e9655f863246db60c51140153186acc2afdc855 Mon Sep 17 00:00:00 2001 From: Wolfgang Denk Date: Wed, 2 Nov 2005 14:29:12 +0100 Subject: * Add hook to NAND erase and implement nand_wait function. Patch by Mike Rapoport, 01 Nov 2005 Signed-off-by: Ladislav Michl --- drivers/nand/nand_base.c | 36 +++++++++++++++++++++++++++++++++--- 1 file changed, 33 insertions(+), 3 deletions(-) (limited to 'drivers') diff --git a/drivers/nand/nand_base.c b/drivers/nand/nand_base.c index a7ab8c27ad..9ec5af9d71 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 -- cgit v1.2.1