From: Wolfram Sang <wsa+renesas@sang-engineering.com>
Date: Sat, 9 Jan 2021 12:43:09 +0000 (+0100)
Subject: i2c: uapi: add macro to describe support for all SMBus transfers
X-Git-Tag: accepted/tizen/unified/20230118.172025~7822^2~29
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=21500aa84024b3fc541197b2041d80538539740d;p=platform%2Fkernel%2Flinux-rpi.git

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>
---

diff --git a/include/uapi/linux/i2c.h b/include/uapi/linux/i2c.h
index 7786551..92326eb 100644
--- a/include/uapi/linux/i2c.h
+++ b/include/uapi/linux/i2c.h
@@ -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
  */