mtd: orion/kirkwood: add RnB line support to orion mtd driver

Add support for a board to register a callback to get the state of the
RnB line if it has it attached.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

2 files changed, 4 insertions, 0 deletions

diff --git a/arch/arm/plat-orion/include/plat/orion_nand.h b/arch/arm/plat-orion/include/plat/orion_nand.h
index d6a4cfa37785..9f3c180834d1 100644
--- a/arch/arm/plat-orion/include/plat/orion_nand.h
+++ b/arch/arm/plat-orion/include/plat/orion_nand.h
@@ -14,6 +14,7 @@
  */
 struct orion_nand_data {
         struct mtd_partition *parts;
+        int (*dev_ready)(struct mtd_info *mtd);
         u32 nr_parts;
         u8 ale;         /* address line number connected to ALE */
         u8 cle;         /* address line number connected to CLE */
diff --git a/drivers/mtd/nand/orion_nand.c b/drivers/mtd/nand/orion_nand.c
index f4444fe960a1..da6e75343052 100644
--- a/drivers/mtd/nand/orion_nand.c
+++ b/drivers/mtd/nand/orion_nand.c
@@ -126,6 +126,9 @@ static int __init orion_nand_probe(struct platform_device *pdev)
         if (board->width == 16)
                 nc->options |= NAND_BUSWIDTH_16;
 
+        if (board->dev_ready)
+                nc->dev_ready = board->dev_ready;
+
         platform_set_drvdata(pdev, mtd);
 
         if (nand_scan(mtd, 1)) {