diff options
| author | Jean Delvare <khali@linux-fr.org> | 2009-12-06 17:06:22 +0100 |
|---|---|---|
| committer | Jean Delvare <khali@linux-fr.org> | 2009-12-06 17:06:22 +0100 |
| commit | da44bdeb95ea75eec263f42f7703bbf14f004f6a (patch) | |
| tree | 4ef557995fff162e4aef114fcd5959956b050ef6 /drivers/i2c | |
| parent | 194684e596af4bdaebb424166d94a8aa528edfda (diff) | |
| download | lwn-da44bdeb95ea75eec263f42f7703bbf14f004f6a.tar.gz lwn-da44bdeb95ea75eec263f42f7703bbf14f004f6a.zip | |
i2c: Bus drivers don't have to support I2C_M_REV_DIR_ADDR
I2C bus drivers don't have to support I2C_M_REV_DIR_ADDR. It is a
deviation from the I2C specification, which only makes sense to
implement when really needed.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-iop3xx.c | 6 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-mv64xxx.c | 3 | ||||
| -rw-r--r-- | drivers/i2c/busses/i2c-powermac.c | 2 |
3 files changed, 0 insertions, 11 deletions
diff --git a/drivers/i2c/busses/i2c-iop3xx.c b/drivers/i2c/busses/i2c-iop3xx.c index a75c75e77b92..5901707fc66a 100644 --- a/drivers/i2c/busses/i2c-iop3xx.c +++ b/drivers/i2c/busses/i2c-iop3xx.c @@ -56,12 +56,6 @@ iic_cook_addr(struct i2c_msg *msg) if (msg->flags & I2C_M_RD) addr |= 1; - /* - * Read or Write? - */ - if (msg->flags & I2C_M_REV_DIR_ADDR) - addr ^= 1; - return addr; } diff --git a/drivers/i2c/busses/i2c-mv64xxx.c b/drivers/i2c/busses/i2c-mv64xxx.c index bbab0e166630..ed387ffa4730 100644 --- a/drivers/i2c/busses/i2c-mv64xxx.c +++ b/drivers/i2c/busses/i2c-mv64xxx.c @@ -338,9 +338,6 @@ mv64xxx_i2c_prepare_for_io(struct mv64xxx_i2c_data *drv_data, if (msg->flags & I2C_M_RD) dir = 1; - if (msg->flags & I2C_M_REV_DIR_ADDR) - dir ^= 1; - if (msg->flags & I2C_M_TEN) { drv_data->addr1 = 0xf0 | (((u32)msg->addr & 0x300) >> 7) | dir; drv_data->addr2 = (u32)msg->addr & 0xff; diff --git a/drivers/i2c/busses/i2c-powermac.c b/drivers/i2c/busses/i2c-powermac.c index 02b02413850a..1c440a70ec61 100644 --- a/drivers/i2c/busses/i2c-powermac.c +++ b/drivers/i2c/busses/i2c-powermac.c @@ -162,8 +162,6 @@ static int i2c_powermac_master_xfer( struct i2c_adapter *adap, return -EINVAL; read = (msgs->flags & I2C_M_RD) != 0; addrdir = (msgs->addr << 1) | read; - if (msgs->flags & I2C_M_REV_DIR_ADDR) - addrdir ^= 1; rc = pmac_i2c_open(bus, 0); if (rc) { |