mtd: gpmi: add on-flash BBT support for gpmi nand

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Gitweb:     http://git.infradead.org/?p=mtd-2.6.git;a=commit;h=c50c69402ac24641da38c146796c199387b97f8d
Commit:     c50c69402ac24641da38c146796c199387b97f8d
Parent:     44ed0ffdbc0e7ce2bd8954b79626df45d679d189
Author:     Huang Shijie <b32955 at freescale.com>
AuthorDate: Tue Jul 3 16:24:32 2012 +0800
Committer:  David Woodhouse <David.Woodhouse at intel.com>
CommitDate: Mon Jul 16 21:46:46 2012 +0100

    mtd: gpmi: add on-flash BBT support for gpmi nand
    
    add the on flash bbt support for gpmi nand driver.
    
    Signed-off-by: Huang Shijie <b32955 at freescale.com>
    Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy at linux.intel.com>
    Signed-off-by: David Woodhouse <David.Woodhouse at intel.com>
---
 .../devicetree/bindings/mtd/gpmi-nand.txt          |    4 ++++
 drivers/mtd/nand/gpmi-nand/gpmi-nand.c             |    3 +++
 2 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/Documentation/devicetree/bindings/mtd/gpmi-nand.txt b/Documentation/devicetree/bindings/mtd/gpmi-nand.txt
index 1a5bbd3..3fb3f90 100644
--- a/Documentation/devicetree/bindings/mtd/gpmi-nand.txt
+++ b/Documentation/devicetree/bindings/mtd/gpmi-nand.txt
@@ -12,6 +12,10 @@ Required properties:
   - interrupt-names : The interrupt names "gpmi-dma", "bch";
   - fsl,gpmi-dma-channel : Should contain the dma channel it uses.
 
+Optional properties:
+  - nand-on-flash-bbt: boolean to enable on flash bbt option if not
+                       present false
+
 The device tree may optionally contain sub-nodes describing partitions of the
 address space. See partition.txt for more detail.
 
diff --git a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
index d6fa8f4..5d9796a 100644
--- a/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/gpmi-nand/gpmi-nand.c
@@ -27,6 +27,7 @@
 #include <linux/pinctrl/consumer.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
+#include <linux/of_mtd.h>
 #include "gpmi-nand.h"
 
 /* add our owner bbt descriptor */
@@ -1502,6 +1503,8 @@ static int __devinit gpmi_nfc_init(struct gpmi_nand_data *this)
 	chip->ecc.size		= 1;
 	chip->ecc.strength	= 8;
 	chip->ecc.layout	= &gpmi_hw_ecclayout;
+	if (of_get_nand_on_flash_bbt(this->dev->of_node))
+		chip->bbt_options |= NAND_BBT_USE_FLASH | NAND_BBT_NO_OOB;
 
 	/* Allocate a temporary DMA buffer for reading ID in the nand_scan() */
 	this->bch_geometry.payload_size = 1024;