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[MTD] [NAND] S3C2412 fix hw ecc

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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>
This commit is contained in:
Matthieu CASTET 2007-02-13 12:30:38 +01:00 committed by David Woodhouse
parent 2a7295b277
commit 4f65992381
1 changed files with 27 additions and 0 deletions
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27
drivers/mtd/nand/s3c2410.c
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@ -418,6 +418,15 @@ static void s3c2410_nand_enable_hwecc(struct mtd_info *mtd, int mode)
writel(ctrl, info->regs + S3C2410_NFCONF); 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) static void s3c2440_nand_enable_hwecc(struct mtd_info *mtd, int mode)
{ {
struct s3c2410_nand_info *info = s3c2410_nand_mtd_toinfo(mtd); 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; 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) 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); 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; break;
case TYPE_S3C2412: case TYPE_S3C2412:
chip->ecc.hwctl = s3c2412_nand_enable_hwecc;
chip->ecc.calculate = s3c2412_nand_calculate_ecc;
break;
case TYPE_S3C2440: case TYPE_S3C2440:
chip->ecc.hwctl = s3c2440_nand_enable_hwecc; chip->ecc.hwctl = s3c2440_nand_enable_hwecc;
chip->ecc.calculate = s3c2440_nand_calculate_ecc; chip->ecc.calculate = s3c2440_nand_calculate_ecc;