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authorJean Delvare <khali@linux-fr.org>2008-01-27 12:14:50 -0500
committerJean Delvare <khali@hyperion.delvare>2008-01-27 12:14:50 -0500
commit369f6f4aec5315012ff5d951e0179f860c35c181 (patch)
tree85b9d9a257a0cf3b831b064f72ebe59cb67c198a /drivers/i2c/busses
parentae7b0497b8280ad5ecfe7bd045c5106f35950c8a (diff)
i2c-i801: More explicit names for chip features
Use separate flags with explicit names to describe the features of the ICH chip. Signed-off-by: Jean Delvare <khali@linux-fr.org>
Diffstat (limited to 'drivers/i2c/busses')
-rw-r--r--drivers/i2c/busses/i2c-i801.c24
1 files changed, 15 insertions, 9 deletions
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c
index 8f16a47bcaf9..c31699d8df3a 100644
--- a/drivers/i2c/busses/i2c-i801.c
+++ b/drivers/i2c/busses/i2c-i801.c
@@ -122,7 +122,12 @@ static unsigned long i801_smba;
122static unsigned char i801_original_hstcfg; 122static unsigned char i801_original_hstcfg;
123static struct pci_driver i801_driver; 123static struct pci_driver i801_driver;
124static struct pci_dev *I801_dev; 124static struct pci_dev *I801_dev;
125static int isich4; 125
126#define FEATURE_SMBUS_PEC (1 << 0)
127#define FEATURE_BLOCK_BUFFER (1 << 1)
128#define FEATURE_BLOCK_PROC (1 << 2)
129#define FEATURE_I2C_BLOCK_READ (1 << 3)
130static unsigned int i801_features;
126 131
127static int i801_transaction(int xact) 132static int i801_transaction(int xact)
128{ 133{
@@ -409,7 +414,8 @@ static int i801_block_transaction(union i2c_smbus_data *data, char read_write,
409 data->block[0] = 32; /* max for reads */ 414 data->block[0] = 32; /* max for reads */
410 } 415 }
411 416
412 if (isich4 && i801_set_block_buffer_mode() == 0 ) 417 if ((i801_features & FEATURE_BLOCK_BUFFER)
418 && i801_set_block_buffer_mode() == 0)
413 result = i801_block_transaction_by_block(data, read_write, 419 result = i801_block_transaction_by_block(data, read_write,
414 hwpec); 420 hwpec);
415 else 421 else
@@ -435,7 +441,7 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
435 int block = 0; 441 int block = 0;
436 int ret, xact = 0; 442 int ret, xact = 0;
437 443
438 hwpec = isich4 && (flags & I2C_CLIENT_PEC) 444 hwpec = (i801_features & FEATURE_SMBUS_PEC) && (flags & I2C_CLIENT_PEC)
439 && size != I2C_SMBUS_QUICK 445 && size != I2C_SMBUS_QUICK
440 && size != I2C_SMBUS_I2C_BLOCK_DATA; 446 && size != I2C_SMBUS_I2C_BLOCK_DATA;
441 447
@@ -523,9 +529,9 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr,
523static u32 i801_func(struct i2c_adapter *adapter) 529static u32 i801_func(struct i2c_adapter *adapter)
524{ 530{
525 return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE | 531 return I2C_FUNC_SMBUS_QUICK | I2C_FUNC_SMBUS_BYTE |
526 I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | 532 I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA |
527 I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK 533 I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_WRITE_I2C_BLOCK |
528 | (isich4 ? I2C_FUNC_SMBUS_PEC : 0); 534 ((i801_features & FEATURE_SMBUS_PEC) ? I2C_FUNC_SMBUS_PEC : 0);
529} 535}
530 536
531static const struct i2c_algorithm smbus_algorithm = { 537static const struct i2c_algorithm smbus_algorithm = {
@@ -565,6 +571,7 @@ static int __devinit i801_probe(struct pci_dev *dev, const struct pci_device_id
565 int err; 571 int err;
566 572
567 I801_dev = dev; 573 I801_dev = dev;
574 i801_features = 0;
568 switch (dev->device) { 575 switch (dev->device) {
569 case PCI_DEVICE_ID_INTEL_82801DB_3: 576 case PCI_DEVICE_ID_INTEL_82801DB_3:
570 case PCI_DEVICE_ID_INTEL_82801EB_3: 577 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
575 case PCI_DEVICE_ID_INTEL_ICH8_5: 582 case PCI_DEVICE_ID_INTEL_ICH8_5:
576 case PCI_DEVICE_ID_INTEL_ICH9_6: 583 case PCI_DEVICE_ID_INTEL_ICH9_6:
577 case PCI_DEVICE_ID_INTEL_TOLAPAI_1: 584 case PCI_DEVICE_ID_INTEL_TOLAPAI_1:
578 isich4 = 1; 585 i801_features |= FEATURE_SMBUS_PEC;
586 i801_features |= FEATURE_BLOCK_BUFFER;
579 break; 587 break;
580 default:
581 isich4 = 0;
582 } 588 }
583 589
584 err = pci_enable_device(dev); 590 err = pci_enable_device(dev);