Commit be8444bd authored by David Woodhouse's avatar David Woodhouse

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

Signed-off-by: default avatarDavid Woodhouse <dwmw2@infradead.org>
parent 195a253b
......@@ -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);
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment