diff options
Diffstat (limited to 'drivers/i2c/busses')
| -rw-r--r-- | drivers/i2c/busses/i2c-nforce2.c | 38 |
1 files changed, 27 insertions, 11 deletions
diff --git a/drivers/i2c/busses/i2c-nforce2.c b/drivers/i2c/busses/i2c-nforce2.c index 2d80eb26f688..604b49e22df1 100644 --- a/drivers/i2c/busses/i2c-nforce2.c +++ b/drivers/i2c/busses/i2c-nforce2.c @@ -31,6 +31,8 @@ nForce3 250Gb MCP 00E4 nForce4 MCP 0052 nForce4 MCP-04 0034 + nForce4 MCP51 0264 + nForce4 MCP55 0368 This driver supports the 2 SMBuses that are included in the MCP of the nForce2/3/4 chipsets. @@ -64,6 +66,7 @@ struct nforce2_smbus { /* * nVidia nForce2 SMBus control register definitions + * (Newer incarnations use standard BARs 4 and 5 instead) */ #define NFORCE_PCI_SMB1 0x50 #define NFORCE_PCI_SMB2 0x54 @@ -259,6 +262,8 @@ static struct pci_device_id nforce2_ids[] = { { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE3S_SMBUS) }, { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE4_SMBUS) }, { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP04_SMBUS) }, + { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP51_SMBUS) }, + { PCI_DEVICE(PCI_VENDOR_ID_NVIDIA, PCI_DEVICE_ID_NVIDIA_NFORCE_MCP55_SMBUS) }, { 0 } }; @@ -266,19 +271,29 @@ static struct pci_device_id nforce2_ids[] = { MODULE_DEVICE_TABLE (pci, nforce2_ids); -static int __devinit nforce2_probe_smb (struct pci_dev *dev, int reg, - struct nforce2_smbus *smbus, char *name) +static int __devinit nforce2_probe_smb (struct pci_dev *dev, int bar, + int alt_reg, struct nforce2_smbus *smbus, const char *name) { - u16 iobase; int error; - if (pci_read_config_word(dev, reg, &iobase) != PCIBIOS_SUCCESSFUL) { - dev_err(&smbus->adapter.dev, "Error reading PCI config for %s\n", name); - return -1; + smbus->base = pci_resource_start(dev, bar); + if (smbus->base) { + smbus->size = pci_resource_len(dev, bar); + } else { + /* Older incarnations of the device used non-standard BARs */ + u16 iobase; + + if (pci_read_config_word(dev, alt_reg, &iobase) + != PCIBIOS_SUCCESSFUL) { + dev_err(&dev->dev, "Error reading PCI config for %s\n", + name); + return -1; + } + + smbus->base = iobase & PCI_BASE_ADDRESS_IO_MASK; + smbus->size = 8; } - smbus->dev = dev; - smbus->base = iobase & 0xfffc; - smbus->size = 8; + smbus->dev = dev; if (!request_region(smbus->base, smbus->size, nforce2_driver.name)) { dev_err(&smbus->adapter.dev, "Error requesting region %02x .. %02X for %s\n", @@ -313,12 +328,13 @@ static int __devinit nforce2_probe(struct pci_dev *dev, const struct pci_device_ pci_set_drvdata(dev, smbuses); /* SMBus adapter 1 */ - res1 = nforce2_probe_smb (dev, NFORCE_PCI_SMB1, &smbuses[0], "SMB1"); + res1 = nforce2_probe_smb(dev, 4, NFORCE_PCI_SMB1, &smbuses[0], "SMB1"); if (res1 < 0) { dev_err(&dev->dev, "Error probing SMB1.\n"); smbuses[0].base = 0; /* to have a check value */ } - res2 = nforce2_probe_smb (dev, NFORCE_PCI_SMB2, &smbuses[1], "SMB2"); + /* SMBus adapter 2 */ + res2 = nforce2_probe_smb(dev, 5, NFORCE_PCI_SMB2, &smbuses[1], "SMB2"); if (res2 < 0) { dev_err(&dev->dev, "Error probing SMB2.\n"); smbuses[1].base = 0; /* to have a check value */ |