[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>
diff --git a/drivers/mtd/nand/at91_nand.c b/drivers/mtd/nand/at91_nand.c
index 09ebcc9..414ceae 100644
--- a/drivers/mtd/nand/at91_nand.c
+++ b/drivers/mtd/nand/at91_nand.c
@@ -101,6 +101,12 @@
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;