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| author | Matthieu CASTET <matthieu.castet@parrot.fr> | 2007-02-13 12:30:38 +0100 |
|---|---|---|
| committer | David Woodhouse <dwmw2@infradead.org> | 2007-02-18 16:47:47 +0000 |
| commit | 4f65992381112acd7d2732665a9eae492c2c9de6 (patch) | |
| tree | e04df8b8129f5ca5cd1ecdc8ab9225094397575b /drivers/mtd/nand/s3c2410.c | |
| parent | 2a7295b277539728a748fba00db388f3dc49c0d0 (diff) | |
| download | kernel_samsung_tuna-4f65992381112acd7d2732665a9eae492c2c9de6.zip kernel_samsung_tuna-4f65992381112acd7d2732665a9eae492c2c9de6.tar.gz kernel_samsung_tuna-4f65992381112acd7d2732665a9eae492c2c9de6.tar.bz2 | |
[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/nand/s3c2410.c')
| -rw-r--r-- | drivers/mtd/nand/s3c2410.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c index e8e0301..0ddfd6d 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; |