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authorLars-Peter Clausen <lars@metafoo.de>2010-02-26 18:09:12 +0000
committerLars-Peter Clausen <lars@metafoo.de>2010-02-26 18:09:12 +0000
commit87298f0de2bf3cfb615c0e6cdeefee58b0534707 (patch)
treec0bb5e3715fbb67f1592c08e394922597c608f0e /target/linux/xburst/patches-2.6.32/050-nand.patch
parentde8394cc11c4f5dec1c94ee4f89a350fddcf44c2 (diff)
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jz4740_nand: * Use NAND_ECC_HW_OOB_FIRST mode instead of a patched NAND_ECC_HW * Fix subpage writing * speed up reading
SVN-Revision: 19875
Diffstat (limited to 'target/linux/xburst/patches-2.6.32/050-nand.patch')
-rw-r--r--target/linux/xburst/patches-2.6.32/050-nand.patch47
1 files changed, 1 insertions, 46 deletions
diff --git a/target/linux/xburst/patches-2.6.32/050-nand.patch b/target/linux/xburst/patches-2.6.32/050-nand.patch
index e803a21..bdb1df8 100644
--- a/target/linux/xburst/patches-2.6.32/050-nand.patch
+++ b/target/linux/xburst/patches-2.6.32/050-nand.patch
@@ -31,49 +31,4 @@ Subject: [PATCH] /opt/Projects/openwrt/target/linux/xburst/patches-2.6.31/050-na
+obj-$(CONFIG_MTD_NAND_JZ4740) += jz4740_nand.o
nand-objs := nand_base.o nand_bbt.o
---- 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 m
- 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_i
- 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;
- }
+