i2c-algo-bit: Add pre- and post-xfer hooks

Drivers might have to do random things before and/or after I2C
transfers. Add hooks to the i2c-algo-bit implementation to let them do
so.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Cc: Alex Deucher <alexdeucher@gmail.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/i2c-algo-bit.h b/include/linux/i2c-algo-bit.h
index 111334f5b922..4f98148c11c3 100644
--- a/include/linux/i2c-algo-bit.h
+++ b/include/linux/i2c-algo-bit.h
@@ -36,6 +36,8 @@ struct i2c_algo_bit_data {
         void (*setscl) (void *data, int state);
         int  (*getsda) (void *data);
         int  (*getscl) (void *data);
+        int  (*pre_xfer)  (struct i2c_adapter *);
+        void (*post_xfer) (struct i2c_adapter *);
 
         /* local settings */
         int udelay;             /* half clock cycle time in us,