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authorMatthieu CASTET <matthieu.castet@parrot.fr>2007-02-13 12:30:38 +0100
committerDavid Woodhouse <dwmw2@infradead.org>2007-02-18 16:47:47 +0000
commit4f65992381112acd7d2732665a9eae492c2c9de6 (patch)
treee04df8b8129f5ca5cd1ecdc8ab9225094397575b /drivers/mtd
parent2a7295b277539728a748fba00db388f3dc49c0d0 (diff)
[MTD] [NAND] S3C2412 fix hw ecc
S3C2412 use differents registers than s3c2440 for hw ecc handling. Signed-off-by: Matthieu CASTET <matthieu.castet@parrot.fr> Acked-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to 'drivers/mtd')
-rw-r--r--drivers/mtd/nand/s3c2410.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c
index e8e030171ec..0ddfd6de75c 100644
--- a/drivers/mtd/nand/s3c2410.c
+++ b/drivers/mtd/nand/s3c2410.c
@@ -418,6 +418,15 @@ static void s3c2410_nand_enable_hwecc(struct mtd_info *mtd, int mode)
writel(ctrl, info->regs + S3C2410_NFCONF);
}
+static void s3c2412_nand_enable_hwecc(struct mtd_info *mtd, int mode)
+{
+ struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd);
+ unsigned long ctrl;
+
+ ctrl = readl(info->regs + S3C2440_NFCONT);
+ writel(ctrl | S3C2412_NFCONT_INIT_MAIN_ECC, info->regs + S3C2440_NFCONT);
+}
+
static void s3c2440_nand_enable_hwecc(struct mtd_info *mtd, int mode)
{
struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd);
@@ -441,6 +450,20 @@ static int s3c2410_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u
return 0;
}
+static int s3c2412_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code)
+{
+ struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd);
+ unsigned long ecc = readl(info->regs + S3C2412_NFMECC0);
+
+ ecc_code[0] = ecc;
+ ecc_code[1] = ecc >> 8;
+ ecc_code[2] = ecc >> 16;
+
+ pr_debug("calculate_ecc: returning ecc %02x,%02x,%02x\n", ecc_code[0], ecc_code[1], ecc_code[2]);
+
+ return 0;
+}
+
static int s3c2440_nand_calculate_ecc(struct mtd_info *mtd, const u_char *dat, u_char *ecc_code)
{
struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd);
@@ -618,6 +641,10 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info,
break;
case TYPE_S3C2412:
+ chip->ecc.hwctl = s3c2412_nand_enable_hwecc;
+ chip->ecc.calculate = s3c2412_nand_calculate_ecc;
+ break;
+
case TYPE_S3C2440:
chip->ecc.hwctl = s3c2440_nand_enable_hwecc;
chip->ecc.calculate = s3c2440_nand_calculate_ecc;