[MTD] [NAND] S3C2410: NAND ECC by chip rather than global
Ben Dooks
ben-linux at fluff.org
Sat May 30 13:41:30 EDT 2009
From: Andy Green <andy at warmcat.com>
This makes us take note about the chosen ECC mode per-chip and
not the one set globally.
Signed-off-by: Andy Green <andy at warmcat.com>
Signed-off-by: Nelson Castillo <arhuaco at freaks-unidos.net>
[ben-linux at fluff.org: andy at openmoko.com => andy at warmcat.com, rewrite subject]
Signed-off-by: Ben Dooks <ben-linux at fluff.org>
---
drivers/mtd/nand/s3c2410.c | 34 +++++++++++++++++++++++++---------
1 files changed, 25 insertions(+), 9 deletions(-)
diff --git a/drivers/mtd/nand/s3c2410.c b/drivers/mtd/nand/s3c2410.c
index a2d1c70..daa4af9 100644
--- a/drivers/mtd/nand/s3c2410.c
+++ b/drivers/mtd/nand/s3c2410.c
@@ -819,6 +819,21 @@ static void s3c2410_nand_init_chip(struct s3c2410_nand_info *info,
if (set->disable_ecc)
chip->ecc.mode = NAND_ECC_NONE;
+
+ switch (chip->ecc.mode) {
+ case NAND_ECC_NONE:
+ dev_info(info->device, "NAND ECC disabled\n");
+ break;
+ case NAND_ECC_SOFT:
+ dev_info(info->device, "NAND soft ECC\n");
+ break;
+ case NAND_ECC_HW:
+ dev_info(info->device, "NAND hardware ECC\n");
+ break;
+ default:
+ dev_info(info->device, "NAND ECC UNKNOWN\n");
+ break;
+ }
}
/**
@@ -840,18 +855,19 @@ static void s3c2410_nand_update_chip(struct s3c2410_nand_info *info,
dev_dbg(info->device, "chip %p => page shift %d\n",
chip, chip->page_shift);
- if (hardware_ecc) {
+ if (chip->ecc.mode != NAND_ECC_HW)
+ return;
+
/* 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;
- }
+ 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;
}
}
--
1.5.6.5
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