i2c: Add I2C_AQ_NO_REP_START adapter quirk

[ Upstream commit aca01415e076aa96cca0f801f4420ee5c10c660d ]

This quirk signifies that the adapter cannot do a repeated
START, it always issues a STOP condition after transfers.

Suggested-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Bence Csókás <bence98@sch.bme.hu>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 7e748648c7d3d6a841f9cdbadf23157faee6367a..6fda0458745dc3a1455225d846f97d05b8d944af 100644 (file)
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -662,6 +662,8 @@ struct i2c_adapter_quirks {
 #define I2C_AQ_NO_ZERO_LEN_READ                BIT(5)
 #define I2C_AQ_NO_ZERO_LEN_WRITE       BIT(6)
 #define I2C_AQ_NO_ZERO_LEN             (I2C_AQ_NO_ZERO_LEN_READ | I2C_AQ_NO_ZERO_LEN_WRITE)
+/* adapter cannot do repeated START */
+#define I2C_AQ_NO_REP_START            BIT(7)
 
 /*
  * i2c_adapter is the structure used to identify a physical i2c bus along