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i2c: core: only use set_scl for bus recovery after calling prepare_recovery 

Using set_scl may be ineffective before calling the driver specific
prepare_recovery callback, which might change into a test mode. So
instead of setting SCL in i2c_generic_scl_recovery, move it to
i2c_generic_recovery (after the optional prepare_recovery).

Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
Acked-by: Alexander Sverdlin <alexander.sverdlin@nokia.com>
Tested-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
hifive-unleashed-5.1
Jan Luebbe 2015-07-08 16:35:06 +02:00 committed by Wolfram Sang
parent d12c0aaf37
commit 8b06260836
1 changed files with 3 additions and 1 deletions
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4
drivers/i2c/i2c-core.c
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@ -567,6 +567,9 @@ static int i2c_generic_recovery(struct i2c_adapter *adap)
if (bri->prepare_recovery)
bri->prepare_recovery(adap);
bri->set_scl(adap, val);
ndelay(RECOVERY_NDELAY);
/*
* By this time SCL is high, as we need to give 9 falling-rising edges
*/
@ -597,7 +600,6 @@ static int i2c_generic_recovery(struct i2c_adapter *adap)
int i2c_generic_scl_recovery(struct i2c_adapter *adap)
{
adap->bus_recovery_info->set_scl(adap, 1);
return i2c_generic_recovery(adap);
}
EXPORT_SYMBOL_GPL(i2c_generic_scl_recovery);