From 0792860061d14d0947973435ab644eb88dd0407a Mon Sep 17 00:00:00 2001 From: mokopatches Date: Wed, 19 Nov 2008 17:03:14 +0000 Subject: s3c24xx-nand-largepage.patch MTD: S3C24XX large page NAND support This adds support for using large page NAND devices with the S3C24XX NAND controller. This also adds the file Documentation/arm/Samsung-S3C24XX/NAND.txt to describe the differences. Signed-off-by: Ben Dooks --- drivers/mtd/nand/s3c2410.c | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c index 404960d342a..a21bc764aec 100644 --- a/drivers/mtd/nand/s3c2410.c +++ b/drivers/mtd/nand/s3c2410.c @@ -806,6 +806,34 @@ static void s3c2410_nand_update_chip(struct s3c2410_nand_info *info, } } +/* s3c2410_nand_update_chip + * + * post-probe chip update, to change any items, such as the + * layout for large page nand + */ + +static void s3c2410_nand_update_chip(struct s3c2410_nand_info *info, + struct s3c2410_nand_mtd *nmtd) +{ + struct nand_chip *chip = &nmtd->chip; + + printk("%s: chip %p: %d\n", __func__, chip, chip->page_shift); + + if (hardware_ecc) { + /* change the behaviour depending on wether we are using + * the large or small page nand device */ + + if (chip->page_shift > 10) { + chip->ecc.size = 256; + chip->ecc.bytes = 3; + } else { + chip->ecc.size = 512; + chip->ecc.bytes = 3; + chip->ecc.layout = &nand_hw_eccoob; + } + } +} + /* s3c2410_nand_probe * * called by device layer when it finds a device matching -- cgit v1.2.3