diff options
Diffstat (limited to 'drivers/mtd/nand/mxc_nand.c')
| -rw-r--r-- | drivers/mtd/nand/mxc_nand.c | 66 |
1 files changed, 54 insertions, 12 deletions
diff --git a/drivers/mtd/nand/mxc_nand.c b/drivers/mtd/nand/mxc_nand.c index 40c26080ecd..76beea40d2c 100644 --- a/drivers/mtd/nand/mxc_nand.c +++ b/drivers/mtd/nand/mxc_nand.c @@ -138,7 +138,14 @@ static struct nand_ecclayout nand_hw_eccoob_8 = { static struct nand_ecclayout nand_hw_eccoob_16 = { .eccbytes = 5, .eccpos = {6, 7, 8, 9, 10}, - .oobfree = {{0, 6}, {12, 4}, } + .oobfree = {{0, 5}, {11, 5}, } +}; + +static struct nand_ecclayout nand_hw_eccoob_64 = { + .eccbytes = 20, + .eccpos = {6, 7, 8, 9, 10, 22, 23, 24, 25, 26, + 38, 39, 40, 41, 42, 54, 55, 56, 57, 58}, + .oobfree = {{2, 4}, {11, 10}, {27, 10}, {43, 10}, {59, 5}, } }; #ifdef CONFIG_MTD_PARTITIONS @@ -192,7 +199,7 @@ static void wait_op_done(struct mxc_nand_host *host, int max_retries, } udelay(1); } - if (max_retries <= 0) + if (max_retries < 0) DEBUG(MTD_DEBUG_LEVEL0, "%s(%d): INT not set\n", __func__, param); } @@ -795,9 +802,13 @@ static void mxc_nand_command(struct mtd_info *mtd, unsigned command, send_addr(host, (page_addr & 0xff), false); if (host->pagesize_2k) { - send_addr(host, (page_addr >> 8) & 0xFF, false); - if (mtd->size >= 0x40000000) + if (mtd->size >= 0x10000000) { + /* paddr_8 - paddr_15 */ + send_addr(host, (page_addr >> 8) & 0xff, false); send_addr(host, (page_addr >> 16) & 0xff, true); + } else + /* paddr_8 - paddr_15 */ + send_addr(host, (page_addr >> 8) & 0xff, true); } else { /* One more address cycle for higher density devices */ if (mtd->size >= 0x4000000) { @@ -923,7 +934,6 @@ static int __init mxcnd_probe(struct platform_device *pdev) this->ecc.mode = NAND_ECC_HW; this->ecc.size = 512; this->ecc.bytes = 3; - this->ecc.layout = &nand_hw_eccoob_8; tmp = readw(host->regs + NFC_CONFIG1); tmp |= NFC_ECC_EN; writew(tmp, host->regs + NFC_CONFIG1); @@ -957,12 +967,44 @@ static int __init mxcnd_probe(struct platform_device *pdev) this->ecc.layout = &nand_hw_eccoob_16; } - host->pagesize_2k = 0; + /* first scan to find the device and get the page size */ + if (nand_scan_ident(mtd, 1)) { + err = -ENXIO; + goto escan; + } - /* Scan to find existence of the device */ - if (nand_scan(mtd, 1)) { - DEBUG(MTD_DEBUG_LEVEL0, - "MXC_ND: Unable to find any NAND device.\n"); + host->pagesize_2k = (mtd->writesize == 2048) ? 1 : 0; + + if (this->ecc.mode == NAND_ECC_HW) { + switch (mtd->oobsize) { + case 8: + this->ecc.layout = &nand_hw_eccoob_8; + break; + case 16: + this->ecc.layout = &nand_hw_eccoob_16; + break; + case 64: + this->ecc.layout = &nand_hw_eccoob_64; + break; + default: + /* page size not handled by HW ECC */ + /* switching back to soft ECC */ + this->ecc.size = 512; + this->ecc.bytes = 3; + this->ecc.layout = &nand_hw_eccoob_8; + this->ecc.mode = NAND_ECC_SOFT; + this->ecc.calculate = NULL; + this->ecc.correct = NULL; + this->ecc.hwctl = NULL; + tmp = readw(host->regs + NFC_CONFIG1); + tmp &= ~NFC_ECC_EN; + writew(tmp, host->regs + NFC_CONFIG1); + break; + } + } + + /* second phase scan */ + if (nand_scan_tail(mtd)) { err = -ENXIO; goto escan; } @@ -985,7 +1027,7 @@ static int __init mxcnd_probe(struct platform_device *pdev) return 0; escan: - free_irq(host->irq, NULL); + free_irq(host->irq, host); eirq: iounmap(host->regs); eres: @@ -1005,7 +1047,7 @@ static int __devexit mxcnd_remove(struct platform_device *pdev) platform_set_drvdata(pdev, NULL); nand_release(&host->mtd); - free_irq(host->irq, NULL); + free_irq(host->irq, host); iounmap(host->regs); kfree(host); |