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| author | David Woodhouse <dwmw2@infradead.org> | 2007-10-06 14:59:32 -0400 |
|---|---|---|
| committer | David Woodhouse <dwmw2@infradead.org> | 2007-10-06 14:59:32 -0400 |
| commit | 1fcf8ce51e7acc4b66904c4e159690c9467606b5 (patch) | |
| tree | 952df20913bb20ccf42a50e57e1286aafa80e9ea /drivers/mtd | |
| parent | 06ed24e5773346eb13579a4ae9599502bc78e4f7 (diff) | |
| download | linux-1fcf8ce51e7acc4b66904c4e159690c9467606b5.tar.gz linux-1fcf8ce51e7acc4b66904c4e159690c9467606b5.tar.bz2 linux-1fcf8ce51e7acc4b66904c4e159690c9467606b5.zip | |
[MTD] [NAND] Resume method for CAFÉ NAND controller
Originally from Marcelo; modified to put the original timing registers
back instead of 0xFFFFFFFF.
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Diffstat (limited to 'drivers/mtd')
| -rw-r--r-- | drivers/mtd/nand/cafe_nand.c | 42 |
1 files changed, 39 insertions, 3 deletions
diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c index 0b3f840b6cbe..e2832d0b9899 100644 --- a/drivers/mtd/nand/cafe_nand.c +++ b/drivers/mtd/nand/cafe_nand.c @@ -827,15 +827,51 @@ static struct pci_device_id cafe_nand_tbl[] = { MODULE_DEVICE_TABLE(pci, cafe_nand_tbl); +static int cafe_nand_resume(struct pci_dev *pdev) +{ + uint32_t ctrl; + struct mtd_info *mtd = pci_get_drvdata(pdev); + struct cafe_priv *cafe = mtd->priv; + + /* Start off by resetting the NAND controller completely */ + cafe_writel(cafe, 1, NAND_RESET); + cafe_writel(cafe, 0, NAND_RESET); + cafe_writel(cafe, 0xffffffff, NAND_IRQ_MASK); + + /* Restore timing configuration */ + cafe_writel(cafe, timing[0], NAND_TIMING1); + cafe_writel(cafe, timing[1], NAND_TIMING2); + cafe_writel(cafe, timing[2], NAND_TIMING3); + + /* Disable master reset, enable NAND clock */ + ctrl = cafe_readl(cafe, GLOBAL_CTRL); + ctrl &= 0xffffeff0; + ctrl |= 0x00007000; + cafe_writel(cafe, ctrl | 0x05, GLOBAL_CTRL); + cafe_writel(cafe, ctrl | 0x0a, GLOBAL_CTRL); + cafe_writel(cafe, 0, NAND_DMA_CTRL); + cafe_writel(cafe, 0x7006, GLOBAL_CTRL); + cafe_writel(cafe, 0x700a, GLOBAL_CTRL); + + /* Set up DMA address */ + cafe_writel(cafe, cafe->dmaaddr & 0xffffffff, NAND_DMA_ADDR0); + if (sizeof(cafe->dmaaddr) > 4) + /* Shift in two parts to shut the compiler up */ + cafe_writel(cafe, (cafe->dmaaddr >> 16) >> 16, NAND_DMA_ADDR1); + else + cafe_writel(cafe, 0, NAND_DMA_ADDR1); + + /* Enable NAND IRQ in global IRQ mask register */ + cafe_writel(cafe, 0x80000007, GLOBAL_IRQ_MASK); + return 0; +} + static struct pci_driver cafe_nand_pci_driver = { .name = "CAFÉ NAND", .id_table = cafe_nand_tbl, .probe = cafe_nand_probe, .remove = __devexit_p(cafe_nand_remove), -#ifdef CONFIG_PMx - .suspend = cafe_nand_suspend, .resume = cafe_nand_resume, -#endif }; static int cafe_nand_init(void) |