diff options
Diffstat (limited to 'drivers/mtd/nand/cafe_nand.c')
| -rw-r--r-- | drivers/mtd/nand/cafe_nand.c | 53 |
1 files changed, 47 insertions, 6 deletions
diff --git a/drivers/mtd/nand/cafe_nand.c b/drivers/mtd/nand/cafe_nand.c index 6f32a35eb10..1e811715211 100644 --- a/drivers/mtd/nand/cafe_nand.c +++ b/drivers/mtd/nand/cafe_nand.c @@ -80,7 +80,7 @@ module_param(regdebug, int, 0644); static int checkecc = 1; module_param(checkecc, int, 0644); -static int numtimings; +static unsigned int numtimings; static int timing[3]; module_param_array(timing, int, &numtimings, 0644); @@ -623,6 +623,11 @@ static int __devinit cafe_nand_probe(struct pci_dev *pdev, uint32_t ctrl; int err = 0; + /* Very old versions shared the same PCI ident for all three + functions on the chip. Verify the class too... */ + if ((pdev->class >> 8) != PCI_CLASS_MEMORY_FLASH) + return -ENODEV; + err = pci_enable_device(pdev); if (err) return err; @@ -816,21 +821,57 @@ static void __devexit cafe_nand_remove(struct pci_dev *pdev) } static struct pci_device_id cafe_nand_tbl[] = { - { 0x11ab, 0x4100, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_MEMORY_FLASH << 8, 0xFFFF0 }, - { 0, } + { 0x11ab, 0x4100, PCI_ANY_ID, PCI_ANY_ID }, + { } }; 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) |