diff options
| -rw-r--r-- | Documentation/i2c/dev-interface | 11 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-amd8111.c | 2 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-i801.c | 2 | ||||
| -rw-r--r-- | include/linux/i2c.h | 5 |
4 files changed, 13 insertions, 7 deletions
diff --git a/Documentation/i2c/dev-interface b/Documentation/i2c/dev-interface index b849ad636583..9dd79123ddd9 100644 --- a/Documentation/i2c/dev-interface +++ b/Documentation/i2c/dev-interface @@ -90,12 +90,15 @@ ioctl(file,I2C_SLAVE,long addr) ioctl(file,I2C_TENBIT,long select) Selects ten bit addresses if select not equals 0, selects normal 7 bit - addresses if select equals 0. Default 0. + addresses if select equals 0. Default 0. This request is only valid + if the adapter has I2C_FUNC_10BIT_ADDR. ioctl(file,I2C_PEC,long select) Selects SMBus PEC (packet error checking) generation and verification if select not equals 0, disables if select equals 0. Default 0. - Used only for SMBus transactions. + Used only for SMBus transactions. This request only has an effect if the + the adapter has I2C_FUNC_SMBUS_PEC; it is still safe if not, it just + doesn't have any effect. ioctl(file,I2C_FUNCS,unsigned long *funcs) Gets the adapter functionality and puts it in *funcs. @@ -103,8 +106,10 @@ ioctl(file,I2C_FUNCS,unsigned long *funcs) ioctl(file,I2C_RDWR,struct i2c_rdwr_ioctl_data *msgset) Do combined read/write transaction without stop in between. - The argument is a pointer to a struct i2c_rdwr_ioctl_data { + Only valid if the adapter has I2C_FUNC_I2C. The argument is + a pointer to a + struct i2c_rdwr_ioctl_data { struct i2c_msg *msgs; /* ptr to array of simple messages */ int nmsgs; /* number of messages to exchange */ } diff --git a/drivers/i2c/busses/i2c-amd8111.c b/drivers/i2c/busses/i2c-amd8111.c index c9fca7b49267..5d1a27ef2504 100644 --- a/drivers/i2c/busses/i2c-amd8111.c +++ b/drivers/i2c/busses/i2c-amd8111.c @@ -326,7 +326,7 @@ static u32 amd8111_func(struct i2c_adapter *adapter) I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA | I2C_FUNC_SMBUS_BLOCK_DATA | I2C_FUNC_SMBUS_PROC_CALL | I2C_FUNC_SMBUS_BLOCK_PROC_CALL | - I2C_FUNC_SMBUS_I2C_BLOCK | I2C_FUNC_SMBUS_HWPEC_CALC; + I2C_FUNC_SMBUS_I2C_BLOCK | I2C_FUNC_SMBUS_PEC; } static const struct i2c_algorithm smbus_algorithm = { diff --git a/drivers/i2c/busses/i2c-i801.c b/drivers/i2c/busses/i2c-i801.c index f78a80867170..ac27e5f84ebe 100644 --- a/drivers/i2c/busses/i2c-i801.c +++ b/drivers/i2c/busses/i2c-i801.c @@ -516,7 +516,7 @@ 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 - | (isich4 ? I2C_FUNC_SMBUS_HWPEC_CALC : 0); + | (isich4 ? I2C_FUNC_SMBUS_PEC : 0); } static const struct i2c_algorithm smbus_algorithm = { diff --git a/include/linux/i2c.h b/include/linux/i2c.h index e43d99d7551f..8033e6b33271 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -491,7 +491,7 @@ struct i2c_msg { #define I2C_FUNC_I2C 0x00000001 #define I2C_FUNC_10BIT_ADDR 0x00000002 #define I2C_FUNC_PROTOCOL_MANGLING 0x00000004 /* I2C_M_{REV_DIR_ADDR,NOSTART,..} */ -#define I2C_FUNC_SMBUS_HWPEC_CALC 0x00000008 /* SMBus 2.0 */ +#define I2C_FUNC_SMBUS_PEC 0x00000008 #define I2C_FUNC_SMBUS_BLOCK_PROC_CALL 0x00008000 /* SMBus 2.0 */ #define I2C_FUNC_SMBUS_QUICK 0x00010000 #define I2C_FUNC_SMBUS_READ_BYTE 0x00020000 @@ -527,7 +527,8 @@ struct i2c_msg { I2C_FUNC_SMBUS_WORD_DATA | \ I2C_FUNC_SMBUS_PROC_CALL | \ I2C_FUNC_SMBUS_WRITE_BLOCK_DATA | \ - I2C_FUNC_SMBUS_I2C_BLOCK) + I2C_FUNC_SMBUS_I2C_BLOCK | \ + I2C_FUNC_SMBUS_PEC) /* * Data for SMBus Messages |