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From 436aee004fda70b654698aff99427abdebf6bdb9 Mon Sep 17 00:00:00 2001
From: Lars-Peter Clausen <lars@metafoo.de>
Date: Mon, 11 Jan 2010 04:29:37 +0100
Subject: [PATCH] /opt/Projects/openwrt/target/linux/xburst/patches-2.6.31/050-nand.patch
---
drivers/mtd/nand/Kconfig | 6 ++++++
drivers/mtd/nand/Makefile | 1 +
drivers/mtd/nand/nand_base.c | 19 +++++++------------
3 files changed, 14 insertions(+), 12 deletions(-)
diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 2fda0b6..8b28828 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -482,4 +482,10 @@ config MTD_NAND_W90P910
This enables the driver for the NAND Flash on evaluation board based
on w90p910.
+config MTD_NAND_JZ4740
+ tristate "Support NAND Flash device on Jz4740 board"
+ depends on SOC_JZ4740
+ help
+ Support NAND Flash device on Jz4740 board
+
endif # MTD_NAND
diff --git a/drivers/mtd/nand/Makefile b/drivers/mtd/nand/Makefile
index 6950d3d..1661534 100644
--- a/drivers/mtd/nand/Makefile
+++ b/drivers/mtd/nand/Makefile
@@ -42,5 +42,6 @@ obj-$(CONFIG_MTD_NAND_SOCRATES) += socrates_nand.o
obj-$(CONFIG_MTD_NAND_TXX9NDFMC) += txx9ndfmc.o
obj-$(CONFIG_MTD_NAND_W90P910) += w90p910_nand.o
obj-$(CONFIG_MTD_NAND_NOMADIK) += nomadik_nand.o
+obj-$(CONFIG_MTD_NAND_JZ4740) += jz4740_nand.o
nand-objs := nand_base.o nand_bbt.o
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 2957cc7..33ed710 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -956,29 +956,22 @@ static int nand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
uint8_t *ecc_calc = chip->buffers->ecccalc;
uint8_t *ecc_code = chip->buffers->ecccode;
uint32_t *eccpos = chip->ecc.layout->eccpos;
-
- for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
- chip->ecc.hwctl(mtd, NAND_ECC_READ);
- chip->read_buf(mtd, p, eccsize);
- chip->ecc.calculate(mtd, p, &ecc_calc[i]);
- }
- chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
+ int stat;
for (i = 0; i < chip->ecc.total; i++)
ecc_code[i] = chip->oob_poi[eccpos[i]];
- eccsteps = chip->ecc.steps;
- p = buf;
-
- for (i = 0 ; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
- int stat;
+ for (i = 0; eccsteps; eccsteps--, i += eccbytes, p += eccsize) {
+ chip->ecc.hwctl(mtd, NAND_ECC_READ);
+ chip->read_buf(mtd, p, eccsize);
stat = chip->ecc.correct(mtd, p, &ecc_code[i], &ecc_calc[i]);
if (stat < 0)
mtd->ecc_stats.failed++;
else
mtd->ecc_stats.corrected += stat;
}
+
return 0;
}
@@ -1178,6 +1171,8 @@ static int nand_do_read_ops(struct mtd_info *mtd, loff_t from,
bufpoi = aligned ? buf : chip->buffers->databuf;
if (likely(sndcmd)) {
+ chip->cmdfunc(mtd, NAND_CMD_READOOB, 0x00, page);
+ chip->read_buf(mtd, chip->oob_poi, mtd->oobsize);
chip->cmdfunc(mtd, NAND_CMD_READ0, 0x00, page);
sndcmd = 0;
}
--
1.5.6.5
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