[MTD] NAND: Add register debugging spew option to CAFÉ driver (be8444bd) · Commits · e / devices / android_kernel_teracube_2e

drivers/mtd/nand/cafe.c

+13 −13

Original line number	Diff line number	Diff line
		@@ -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)
		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);