Commit 21500aa8 authored by Wolfram Sang's avatar Wolfram Sang Committed by Wolfram Sang
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i2c: uapi: add macro to describe support for all SMBus transfers 



Some I2C bus master drivers which support I2C_M_RECV_LEN do not set
the functionality bits of the now supported SMBus transfers. Add a
convenience macro to make this very simple.

Signed-off-by: default avatarWolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: default avatarWolfram Sang <wsa@kernel.org>
parent 1713d66c

include/uapi/linux/i2c.h

+5 −0
Original line number Diff line number Diff line
@@ -129,6 +129,11 @@ struct i2c_msg { 
					 I2C_FUNC_SMBUS_I2C_BLOCK | \

					 I2C_FUNC_SMBUS_PEC)



/* if I2C_M_RECV_LEN is also supported */

#define I2C_FUNC_SMBUS_EMUL_ALL		(I2C_FUNC_SMBUS_EMUL | \

					 I2C_FUNC_SMBUS_READ_BLOCK_DATA | \

					 I2C_FUNC_SMBUS_BLOCK_PROC_CALL)



/*

 * Data for SMBus Messages

 */