diff options
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-piix4.c | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/i2c/busses/i2c-piix4.c b/drivers/i2c/busses/i2c-piix4.c index c46c4bddc7ca..d9f7e771f6ad 100644 --- a/drivers/i2c/busses/i2c-piix4.c +++ b/drivers/i2c/busses/i2c-piix4.c @@ -72,7 +72,8 @@ #define PIIX4_BLOCK_DATA 0x14 /* Multi-port constants */ -#define PIIX4_MAX_ADAPTERS 4 +#define PIIX4_MAX_ADAPTERS 4 +#define HUDSON2_MAIN_PORTS 2 /* HUDSON2, KERNCZ reserves ports 3, 4 */ /* SB800 constants */ #define SB800_PIIX4_SMB_IDX 0xcd6 @@ -808,6 +809,7 @@ MODULE_DEVICE_TABLE (pci, piix4_ids); static struct i2c_adapter *piix4_main_adapters[PIIX4_MAX_ADAPTERS]; static struct i2c_adapter *piix4_aux_adapter; +static int piix4_adapter_count; static int piix4_add_adapter(struct pci_dev *dev, unsigned short smba, bool sb800_main, u8 port, bool notify_imc, @@ -867,7 +869,15 @@ static int piix4_add_adapters_sb800(struct pci_dev *dev, unsigned short smba, int port; int retval; - for (port = 0; port < PIIX4_MAX_ADAPTERS; port++) { + if (dev->device == PCI_DEVICE_ID_AMD_KERNCZ_SMBUS || + (dev->device == PCI_DEVICE_ID_AMD_HUDSON2_SMBUS && + dev->revision >= 0x1F)) { + piix4_adapter_count = HUDSON2_MAIN_PORTS; + } else { + piix4_adapter_count = PIIX4_MAX_ADAPTERS; + } + + for (port = 0; port < piix4_adapter_count; port++) { retval = piix4_add_adapter(dev, smba, true, port, notify_imc, piix4_main_port_names_sb800[port], &piix4_main_adapters[port]); @@ -989,7 +999,7 @@ static void piix4_adap_remove(struct i2c_adapter *adap) static void piix4_remove(struct pci_dev *dev) { - int port = PIIX4_MAX_ADAPTERS; + int port = piix4_adapter_count; while (--port >= 0) { if (piix4_main_adapters[port]) { |