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omap3: nand: ecc layout select from board file

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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>
This commit is contained in:
Sukumar Ghorai
2011-01-28 15:42:08 +05:30
committed by Tony Lindgren
parent 317379a975
commit f3d73f362d
4 changed files with 20 additions and 15 deletions
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26
drivers/mtd/nand/omap2.c
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@@ -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.