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[MTD] NAND: Add register debugging spew option to CAFÉ driver

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Signed-off-by: David Woodhouse <dwmw2@infradead.org>
This commit is contained in:
David Woodhouse 2006-10-31 12:36:04 +08:00
parent 195a253b66
commit be8444bdf3
1 changed files with 13 additions and 13 deletions
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26
drivers/mtd/nand/cafe.c
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@ -72,6 +72,9 @@ module_param(skipbbt, int, 0644);
static int debug = 0;
module_param(debug, int, 0644);
static int regdebug = 0;
module_param(regdebug, int, 0644);
static int checkecc = 1;
module_param(checkecc, int, 0644);
@ -228,12 +231,6 @@ static void cafe_nand_cmdfunc(struct mtd_info *mtd, unsigned command,
cafe_writel(cafe, cafe->ctl2 | 0x100 | NAND_CMD_READSTART, NAND_CTRL2);
do_command:
#if 0
/* http://dev.laptop.org/ticket/200
ECC on read only works if we read precisely 0x80e bytes */
if (cafe->datalen == 2112)
cafe->datalen = 2062;
#endif
cafe_dev_dbg(&cafe->pdev->dev, "dlen %x, ctl1 %x, ctl2 %x\n",
cafe->datalen, ctl1, cafe_readl(cafe, NAND_CTRL2));
@ -254,13 +251,13 @@ static void cafe_nand_cmdfunc(struct mtd_info *mtd, unsigned command,
}
cafe->datalen = 0;
#if 0
{ int i;
printk("About to write command %08x\n", ctl1);
for (i=0; i< 0x5c; i+=4)
printk("Register %x: %08x\n", i, readl(cafe->mmio + i));
if (unlikely(regdebug)) {
int i;
printk("About to write command %08x to register 0\n", ctl1);
for (i=4; i< 0x5c; i+=4)
printk("Register %x: %08x\n", i, readl(cafe->mmio + i));
}
#endif
cafe_writel(cafe, ctl1, NAND_CTRL1);
/* Apply this short delay always to ensure that we do wait tWB in
* any case on any machine. */
@ -388,7 +385,10 @@ static int cafe_nand_read_page(struct mtd_info *mtd, struct nand_chip *chip,
}
if ((i = cafe_correct_ecc(buf, syn)) < 0) {
dev_dbg(&cafe->pdev->dev, "Failed to correct ECC\n");
dev_dbg(&cafe->pdev->dev, "Failed to correct ECC at %08x\n",
cafe_readl(cafe, NAND_ADDR2) * 2048);
for (i=0; i< 0x5c; i+=4)
printk("Register %x: %08x\n", i, readl(cafe->mmio + i));
mtd->ecc_stats.failed++;
} else {
dev_dbg(&cafe->pdev->dev, "Corrected %d symbol errors\n", i);