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

Message ID 1445976718-7449-1-git-send-email-nicola@corna.info
State Superseded
Headers show

Commit Message

Nicola Corna Oct. 27, 2015, 8:11 p.m. UTC
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(+)
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Patch

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