diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-i801.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-i801.c | 61 |
1 files changed, 18 insertions, 43 deletions
diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index 709beab76609..4f63195069da 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -52,10 +52,6 @@ #include <linux/i2c.h> #include <asm/io.h> -#ifdef I2C_FUNC_SMBUS_BLOCK_DATA_PEC -#define HAVE_PEC -#endif - /* I801 SMBus address offsets */ #define SMBHSTSTS (0 + i801_smba) #define SMBHSTCNT (2 + i801_smba) @@ -106,10 +102,11 @@ MODULE_PARM_DESC(force_addr, "EXTREMELY DANGEROUS!"); static int i801_transaction(void); -static int i801_block_transaction(union i2c_smbus_data *data, - char read_write, int command); +static int i801_block_transaction(union i2c_smbus_data *data, char read_write, + int command, int hwpec); static unsigned short i801_smba; +static struct pci_driver i801_driver; static struct pci_dev *I801_dev; static int isich4; @@ -143,7 +140,7 @@ static int i801_setup(struct pci_dev *dev) } } - if (!request_region(i801_smba, (isich4 ? 16 : 8), "i801-smbus")) { + if (!request_region(i801_smba, (isich4 ? 16 : 8), i801_driver.name)) { dev_err(&dev->dev, "I801_smb region 0x%x already in use!\n", i801_smba); error_return = -EBUSY; @@ -252,7 +249,7 @@ static int i801_transaction(void) /* All-inclusive block transaction function */ static int i801_block_transaction(union i2c_smbus_data *data, char read_write, - int command) + int command, int hwpec) { int i, len; int smbcmd; @@ -391,8 +388,7 @@ static int i801_block_transaction(union i2c_smbus_data *data, char read_write, goto END; } -#ifdef HAVE_PEC - if(isich4 && command == I2C_SMBUS_BLOCK_DATA_PEC) { + if (hwpec) { /* wait for INTR bit as advised by Intel */ timeout = 0; do { @@ -406,7 +402,6 @@ static int i801_block_transaction(union i2c_smbus_data *data, char read_write, } outb_p(temp, SMBHSTSTS); } -#endif result = 0; END: if (command == I2C_SMBUS_I2C_BLOCK_DATA) { @@ -421,14 +416,13 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr, unsigned short flags, char read_write, u8 command, int size, union i2c_smbus_data * data) { - int hwpec = 0; + int hwpec; int block = 0; int ret, xact = 0; -#ifdef HAVE_PEC - if(isich4) - hwpec = (flags & I2C_CLIENT_PEC) != 0; -#endif + hwpec = isich4 && (flags & I2C_CLIENT_PEC) + && size != I2C_SMBUS_QUICK + && size != I2C_SMBUS_I2C_BLOCK_DATA; switch (size) { case I2C_SMBUS_QUICK: @@ -463,11 +457,6 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr, break; case I2C_SMBUS_BLOCK_DATA: case I2C_SMBUS_I2C_BLOCK_DATA: -#ifdef HAVE_PEC - case I2C_SMBUS_BLOCK_DATA_PEC: - if(hwpec && size == I2C_SMBUS_BLOCK_DATA) - size = I2C_SMBUS_BLOCK_DATA_PEC; -#endif outb_p(((addr & 0x7f) << 1) | (read_write & 0x01), SMBHSTADD); outb_p(command, SMBHSTCMD); @@ -479,27 +468,18 @@ static s32 i801_access(struct i2c_adapter * adap, u16 addr, return -1; } -#ifdef HAVE_PEC - if(isich4 && hwpec) { - if(size != I2C_SMBUS_QUICK && - size != I2C_SMBUS_I2C_BLOCK_DATA) - outb_p(1, SMBAUXCTL); /* enable HW PEC */ - } -#endif + if (hwpec) + outb_p(1, SMBAUXCTL); /* enable hardware PEC */ + if(block) - ret = i801_block_transaction(data, read_write, size); + ret = i801_block_transaction(data, read_write, size, hwpec); else { outb_p(xact | ENABLE_INT9, SMBHSTCNT); ret = i801_transaction(); } -#ifdef HAVE_PEC - if(isich4 && hwpec) { - if(size != I2C_SMBUS_QUICK && - size != I2C_SMBUS_I2C_BLOCK_DATA) - outb_p(0, SMBAUXCTL); - } -#endif + if (hwpec) + outb_p(0, SMBAUXCTL); /* disable hardware PEC */ if(block) return ret; @@ -526,12 +506,7 @@ 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 -#ifdef HAVE_PEC - | (isich4 ? I2C_FUNC_SMBUS_BLOCK_DATA_PEC | - I2C_FUNC_SMBUS_HWPEC_CALC - : 0) -#endif - ; + | (isich4 ? I2C_FUNC_SMBUS_HWPEC_CALC : 0); } static struct i2c_algorithm smbus_algorithm = { @@ -543,7 +518,6 @@ static struct i2c_adapter i801_adapter = { .owner = THIS_MODULE, .class = I2C_CLASS_HWMON, .algo = &smbus_algorithm, - .name = "unset", }; static struct pci_device_id i801_ids[] = { @@ -586,6 +560,7 @@ static void __devexit i801_remove(struct pci_dev *dev) } static struct pci_driver i801_driver = { + .owner = THIS_MODULE, .name = "i801_smbus", .id_table = i801_ids, .probe = i801_probe, |