i2c: Add I2C_AQ_NO_REP_START adapter quirk
authorBence Csókás <bence98@sch.bme.hu>
Wed, 31 Mar 2021 19:19:20 +0000 (19:19 +0000)
committerWolfram Sang <wsa@kernel.org>
Mon, 5 Apr 2021 20:40:59 +0000 (22:40 +0200)
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>
include/linux/i2c.h

index 5662265..a670ae1 100644 (file)
@@ -687,6 +687,8 @@ 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