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[MTD] NAND: Fix ECC settings in CAFÉ controller driver.

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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 <dwmw2@infradead.org>
This commit is contained in:
David Woodhouse 2006-11-01 08:19:20 +08:00
parent be8444bdf3
commit cad40654c3
1 changed files with 3 additions and 7 deletions
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10
drivers/mtd/nand/cafe.c
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@ -159,6 +159,7 @@ static void cafe_nand_cmdfunc(struct mtd_info *mtd, unsigned command,
/* Second half of a command we already calculated */ /* Second half of a command we already calculated */
cafe_writel(cafe, cafe->ctl2 | 0x100 | command, NAND_CTRL2); cafe_writel(cafe, cafe->ctl2 | 0x100 | command, NAND_CTRL2);
ctl1 = cafe->ctl1; ctl1 = cafe->ctl1;
cafe->ctl2 &= ~(1<<30);
cafe_dev_dbg(&cafe->pdev->dev, "Continue command, ctl1 %08x, #data %d\n", cafe_dev_dbg(&cafe->pdev->dev, "Continue command, ctl1 %08x, #data %d\n",
cafe->ctl1, cafe->nr_data); cafe->ctl1, cafe->nr_data);
goto do_command; 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 /* Ignore the first command of a pair; the hardware
deals with them both at once, later */ deals with them both at once, later */
cafe->ctl1 = ctl1; cafe->ctl1 = ctl1;
cafe->ctl2 = 0;
cafe_dev_dbg(&cafe->pdev->dev, "Setup for delayed command, ctl1 %08x, dlen %x\n", cafe_dev_dbg(&cafe->pdev->dev, "Setup for delayed command, ctl1 %08x, dlen %x\n",
cafe->ctl1, cafe->datalen); cafe->ctl1, cafe->datalen);
return; 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)); command, 500000-c, irqs, cafe_readl(cafe, NAND_IRQ));
} }
WARN_ON(cafe->ctl2 & (1<<30));
cafe->ctl2 &= ~(1<<8);
cafe->ctl2 &= ~(1<<30);
switch (command) { 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); chip->write_buf(mtd, chip->oob_poi, mtd->oobsize);
/* Set up ECC autogeneration */ /* Set up ECC autogeneration */
cafe->ctl2 |= (1<<27) | (1<<30); cafe->ctl2 |= (1<<30);
if (mtd->writesize == 2048)
cafe->ctl2 |= (1<<29);
} }
static int cafe_nand_write_page(struct mtd_info *mtd, struct nand_chip *chip, static int cafe_nand_write_page(struct mtd_info *mtd, struct nand_chip *chip,