From cad40654c312fc51bdb520e9be91e29a9742bbcb Mon Sep 17 00:00:00 2001 From: David Woodhouse Date: Wed, 1 Nov 2006 08:19:20 +0800 Subject: [PATCH] =?utf8?q?[MTD]=20NAND:=20Fix=20ECC=20settings=20in=20CAF?= =?utf8?q?=C3=89=20controller=20driver.?= MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit We were resetting cafe->ctl2 to zero after an erase (and also during a write, but it was correctly reset after that). This meant that ECC reads after an erase were failing. Doh. Signed-off-by: David Woodhouse --- drivers/mtd/nand/cafe.c | 10 +++------- 1 file changed, 3 insertions(+), 7 deletions(-) diff --git a/drivers/mtd/nand/cafe.c b/drivers/mtd/nand/cafe.c index c5d03b07f7a9..fad304bf7b7e 100644 --- a/drivers/mtd/nand/cafe.c +++ b/drivers/mtd/nand/cafe.c @@ -159,6 +159,7 @@ static void cafe_nand_cmdfunc(struct mtd_info *mtd, unsigned command, /* Second half of a command we already calculated */ cafe_writel(cafe, cafe->ctl2 | 0x100 | command, NAND_CTRL2); ctl1 = cafe->ctl1; + cafe->ctl2 &= ~(1<<30); cafe_dev_dbg(&cafe->pdev->dev, "Continue command, ctl1 %08x, #data %d\n", cafe->ctl1, cafe->nr_data); goto do_command; @@ -219,7 +220,6 @@ static void cafe_nand_cmdfunc(struct mtd_info *mtd, unsigned command, /* Ignore the first command of a pair; the hardware deals with them both at once, later */ cafe->ctl1 = ctl1; - cafe->ctl2 = 0; cafe_dev_dbg(&cafe->pdev->dev, "Setup for delayed command, ctl1 %08x, dlen %x\n", cafe->ctl1, cafe->datalen); return; @@ -281,9 +281,7 @@ static void cafe_nand_cmdfunc(struct mtd_info *mtd, unsigned command, command, 500000-c, irqs, cafe_readl(cafe, NAND_IRQ)); } - - cafe->ctl2 &= ~(1<<8); - cafe->ctl2 &= ~(1<<30); + WARN_ON(cafe->ctl2 & (1<<30)); switch (command) { @@ -471,9 +469,7 @@ static void cafe_nand_write_page_lowlevel(struct mtd_info *mtd, chip->write_buf(mtd, chip->oob_poi, mtd->oobsize); /* Set up ECC autogeneration */ - cafe->ctl2 |= (1<<27) | (1<<30); - if (mtd->writesize == 2048) - cafe->ctl2 |= (1<<29); + cafe->ctl2 |= (1<<30); } static int cafe_nand_write_page(struct mtd_info *mtd, struct nand_chip *chip, -- 2.20.1