Thread (30 messages) 30 messages, 6 authors, 2015-12-05
STALE3318d

[PATCH v2 1/5] i2c: add i2c quirk flag for unsupported clock stretching

From: Nicola Corna <hidden>
Date: 2015-10-29 11:34:23
Also in: linux-i2c, linux-iio
Subsystem: i2c subsystem, the rest · Maintainers: Wolfram Sang, Linus Torvalds

Add I2C_AQ_NO_CLK_STRETCH quirk flag, to be used when clock stretching is
not supported.

Signed-off-by: Nicola Corna <redacted>
---
 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
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