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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: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
This commit is contained in:
Wolfram Sang 2021-01-09 13:43:09 +01:00 committed by Wolfram Sang
parent 1713d66cae
commit 21500aa840
1 changed files with 5 additions and 0 deletions
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5
include/uapi/linux/i2c.h
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@ -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
*/