| Message ID | 1459709101-24462-3-git-send-email-wsa@the-dreams.de |
|---|---|
| State | Accepted |
| Headers | show |
diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 200cf13b00f620..c30833b7b0730d 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -654,6 +654,11 @@ static inline int i2c_adapter_id(struct i2c_adapter *adap) return adap->nr; } +static inline u8 i2c_8bit_addr_from_msg(const struct i2c_msg *msg) +{ + return (msg->addr << 1) | (msg->flags & I2C_M_RD ? 1 : 0); +} + /** * module_i2c_driver() - Helper macro for registering a modular I2C driver * @__i2c_driver: i2c_driver struct
Drivers do this in various ways, let's use one standard way of doing it. Note: I2C_M_RD is bit 0, so the code could be simplified. To be extremly robust and to advertise good coding practices, I still use the ternary operator and let the compilers do the optimizing job. Signed-off-by: Wolfram Sang <wsa@the-dreams.de> --- include/linux/i2c.h | 5 +++++ 1 file changed, 5 insertions(+)