diff options
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-i801.c | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 8f16a47bcaf..c31699d8df3 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -122,7 +122,12 @@ static unsigned long i801_smba; static unsigned char i801_original_hstcfg; static struct pci_driver i801_driver; static struct pci_dev *I801_dev; -static int isich4; + +#define FEATURE_SMBUS_PEC (1 << 0) +#define FEATURE_BLOCK_BUFFER (1 << 1) +#define FEATURE_BLOCK_PROC (1 << 2) +#define FEATURE_I2C_BLOCK_READ (1 << 3) +static unsigned int i801_features; static int i801_transaction(int xact) { @@ -409,7 +414,8 @@ static int i801_block_transaction(union i2c_smbus_data *data, char read_write, data->block[0] = 32; /* max for reads */ } - if (isich4 && i801_set_block_buffer_mode() == 0 ) + if ((i801_features & FEATURE_BLOCK_BUFFER) + && i801_set_block_buffer_mode() == 0) result = i801_block_transaction_by_block(data, read_write, hwpec); else @@ -435,7 +441,7 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr, int block = 0; int ret, xact = 0; - hwpec = isich4 && (flags & I2C_CLIENT_PEC) + hwpec = (i801_features & FEATURE_SMBUS_PEC) && (flags & I2C_CLIENT_PEC) && size != I2C_SMBUS_QUICK && size != I2C_SMBUS_I2C_BLOCK_DATA; @@ -523,9 +529,9 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr, static u32 i801_func(struct i2c_adapter *adapter) { return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | - I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | - I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK - | (isich4 ? I2C_FUNC_SMBUS_PEC : 0); + I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | + I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK | + ((i801_features & FEATURE_SMBUS_PEC) ? I2C_FUNC_SMBUS_PEC : 0); } static const struct i2c_algorithm smbus_algorithm = { @@ -565,6 +571,7 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id int err; I801_dev = dev; + i801_features = 0; switch (dev->device) { case PCI_DEVICE_ID_INTEL_82801DB_3: case PCI_DEVICE_ID_INTEL_82801EB_3: @@ -575,10 +582,9 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id case PCI_DEVICE_ID_INTEL_ICH8_5: case PCI_DEVICE_ID_INTEL_ICH9_6: case PCI_DEVICE_ID_INTEL_TOLAPAI_1: - isich4 = 1; + i801_features |= FEATURE_SMBUS_PEC; + i801_features |= FEATURE_BLOCK_BUFFER; break; - default: - isich4 = 0; } err = pci_enable_device(dev); |