[PATCH 3/3] atmel_nand: add support for flash based bad block table

[Marc Kleine-Budde]

Inspired by Simon Polette's the kernel commit
f4fa697c26bcd9e942de26bad970f4de1da5a49b.

Signed-off-by: Marc Kleine-Budde <mkl at pengutronix.de>
---
 arch/arm/mach-at91/include/mach/board.h |    1 +
 drivers/mtd/nand/atmel_nand.c           |    5 +++++
 2 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/arch/arm/mach-at91/include/mach/board.h b/arch/arm/mach-at91/include/mach/board.h
index 1ab05ad..34a3966 100644
--- a/arch/arm/mach-at91/include/mach/board.h
+++ b/arch/arm/mach-at91/include/mach/board.h
@@ -34,6 +34,7 @@ struct atmel_nand_data {
 	u8		ale;		/* address line number connected to ALE */
 	u8		cle;		/* address line number connected to CLE */
 	u8		bus_width_16;	/* buswidth is 16 bit */
+	u8		flash_bbt;	/* use a flash based bbt */
 	u8		ecc_mode;	/* NAND_ECC_* */
 };
 
diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c
index e8f85fc..85e4b24 100644
--- a/drivers/mtd/nand/atmel_nand.c
+++ b/drivers/mtd/nand/atmel_nand.c
@@ -436,6 +436,11 @@ static int __init atmel_nand_probe(struct device_d *dev)
 		}
 	}
 
+	if (host->board->flash_bbt) {
+		printk(KERN_INFO "atmel_nand: Use On Flash BBT\n");
+		nand_chip->options |= NAND_USE_FLASH_BBT;
+	}
+
 	/* first scan to find the device and get the page size */
 	if (nand_scan_ident(mtd, 1)) {
 		res = -ENXIO;
-- 
1.7.2.3