omap3: nand: ecc layout select from board file

This patch makes it possible to select sw or hw (different layout options)
ecc scheme supported by omap nand driver.

Signed-off-by: Vimal Singh <vimalsingh@ti.com>
Signed-off-by: Sukumar Ghorai <s-ghorai@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 11 insertions, 15 deletions

diff --git a/drivers/mtd/nand/omap2.c b/drivers/mtd/nand/omap2.c
index f1648fd5924a..6d4a42e39380 100644
--- a/drivers/mtd/nand/omap2.c
+++ b/drivers/mtd/nand/omap2.c
@@ -626,8 +626,6 @@ static int omap_verify_buf(struct mtd_info *mtd, const u_char * buf, int len)
         return 0;
 }
 
-#ifdef CONFIG_MTD_NAND_OMAP_HWECC
-
 /**
  * gen_true_ecc - This function will generate true ECC value
  * @ecc_buf: buffer to store ecc code
@@ -847,8 +845,6 @@ static void omap_enable_hwecc(struct mtd_info *mtd, int mode)
         gpmc_enable_hwecc(info->gpmc_cs, mode, dev_width, info->nand.ecc.size);
 }
 
-#endif
-
 /**
  * omap_wait - wait until the command is done
  * @mtd: MTD device structure
@@ -1038,17 +1034,17 @@ static int __devinit omap_nand_probe(struct platform_device *pdev)
 
         info->nand.verify_buf = omap_verify_buf;
 
-#ifdef CONFIG_MTD_NAND_OMAP_HWECC
-        info->nand.ecc.bytes            = 3;
-        info->nand.ecc.size             = 512;
-        info->nand.ecc.calculate        = omap_calculate_ecc;
-        info->nand.ecc.hwctl            = omap_enable_hwecc;
-        info->nand.ecc.correct          = omap_correct_data;
-        info->nand.ecc.mode             = NAND_ECC_HW;
-
-#else
-        info->nand.ecc.mode = NAND_ECC_SOFT;
-#endif
+        /* selsect the ecc type */
+        if (pdata->ecc_opt == OMAP_ECC_HAMMING_CODE_DEFAULT)
+                info->nand.ecc.mode = NAND_ECC_SOFT;
+        else if (pdata->ecc_opt == OMAP_ECC_HAMMING_CODE_HW) {
+                info->nand.ecc.bytes            = 3;
+                info->nand.ecc.size             = 512;
+                info->nand.ecc.calculate        = omap_calculate_ecc;
+                info->nand.ecc.hwctl            = omap_enable_hwecc;
+                info->nand.ecc.correct          = omap_correct_data;
+                info->nand.ecc.mode             = NAND_ECC_HW;
+        }
 
         /* DIP switches on some boards change between 8 and 16 bit
          * bus widths for flash.  Try the other width if the first try fails.