[PATCH 1/4] i2c: added i2c quirk flag for unsupported clock stretching

Nicola Corna
2015-10-27T20:11:55Z

Added I2C_AQ_NO_CLK_STRETCH, to be used when clock stretching is not
supported.

Signed-off-by: Nicola Corna <nicola@corna.info>
---
include/linux/i2c.h | 2 ++
1 file changed, 2 insertions(+)

diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 768063b..9697002 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -493,6 +493,8 @@ struct i2c_adapter_quirks {
/* convenience macro for typical write-then read case */
#define I2C_AQ_COMB_WRITE_THEN_READ (I2C_AQ_COMB | I2C_AQ_COMB_WRITE_FIRST | \
I2C_AQ_COMB_READ_SECOND | I2C_AQ_COMB_SAME_ADDR)
+/* clock stretching is not supported */
+#define I2C_AQ_NO_CLK_STRETCH BIT(4)

/*
* i2c_adapter is the structure used to identify a physical i2c bus along
--
2.6.1