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authorAtsushi Nemoto <anemo@mba.ocn.ne.jp>2008-04-24 23:51:29 +0900
committerDavid Woodhouse <dwmw2@infradead.org>2008-04-25 09:08:05 +0100
commit2314488e81b6f8966d3ea607c4517a64bf58f283 (patch)
tree693e4808929113c1268138d9f80acad2b15252f3
parentd43fa1499622e3e561380c34e076aade954e2c2c (diff)
[MTD] [NAND] at91_nand: control NCE signal
This driver did not control NCE signal during normal operations (only enable NCE on probing and disable NCE on removing). This patch make NCE signal inactive on idle state. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
-rw-r--r--drivers/mtd/nand/at91_nand.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/mtd/nand/at91_nand.c b/drivers/mtd/nand/at91_nand.c
index 09ebcc93ed3..414ceaecdb3 100644
--- a/drivers/mtd/nand/at91_nand.c
+++ b/drivers/mtd/nand/at91_nand.c
@@ -101,6 +101,12 @@ static void at91_nand_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl)
struct nand_chip *nand_chip = mtd->priv;
struct at91_nand_host *host = nand_chip->priv;
+ if (host->board->enable_pin && (ctrl & NAND_CTRL_CHANGE)) {
+ if (ctrl & NAND_NCE)
+ at91_set_gpio_value(host->board->enable_pin, 0);
+ else
+ at91_set_gpio_value(host->board->enable_pin, 1);
+ }
if (cmd == NAND_CMD_NONE)
return;