From 436aee004fda70b654698aff99427abdebf6bdb9 Mon Sep 17 00:00:00 2001 From: Lars-Peter Clausen 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(-) --- 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 --- a/drivers/mtd/nand/Makefile +++ b/drivers/mtd/nand/Makefile @@ -42,5 +42,6 @@ obj-$(CONFIG_MTD_NAND_SOCRATES) += socr obj-$(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 --- 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; }