[PATCH 7/7 v4] i2c-eg20t: Add initialize processing in case i2c-error occurs

[Tomoya MORINAGA]

In case disconnecting physical connection,
need to initialize i2c device for retry access.
This patch adds initialize process in case bus-idle fails and Lost arbitration.

Signed-off-by: Tomoya MORINAGA <tomoya-linux@xxxxxxxxxxxxxxxxxx>
---
 drivers/i2c/busses/i2c-eg20t.c |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/drivers/i2c/busses/i2c-eg20t.c b/drivers/i2c/busses/i2c-eg20t.c
index e25b8eb..5521099 100644
--- a/drivers/i2c/busses/i2c-eg20t.c
+++ b/drivers/i2c/busses/i2c-eg20t.c
@@ -292,6 +292,7 @@ static s32 pch_i2c_wait_for_bus_idle(struct i2c_algo_pch_data *adap,
 
 	pch_dbg(adap, "I2CSR = %x\n", ioread32(p + PCH_I2CSR));
 	pch_err(adap, "%s: Timeout Error.return%d\n", __func__, -ETIME);
+	pch_i2c_init(adap);
 
 	return -ETIME;
 }
@@ -459,6 +460,7 @@ static s32 pch_i2c_writebytes(struct i2c_adapter *i2c_adap,
 		pch_err(adap, "Lost Arbitration\n");
 		pch_clrbit(adap->pch_base_address, PCH_I2CSR, I2CMAL_BIT);
 		pch_clrbit(adap->pch_base_address, PCH_I2CSR, I2CMIF_BIT);
+		pch_i2c_init(adap);
 		return -EAGAIN;
 	} else { /* wait-event timeout */
 		pch_i2c_stop(adap);
@@ -637,6 +639,7 @@ static s32 pch_i2c_readbytes(struct i2c_adapter *i2c_adap, struct i2c_msg *msgs,
 		pch_err(adap, "Lost Arbitration\n");
 		pch_clrbit(adap->pch_base_address, PCH_I2CSR, I2CMAL_BIT);
 		pch_clrbit(adap->pch_base_address, PCH_I2CSR, I2CMIF_BIT);
+		pch_i2c_init(adap);
 		return -EAGAIN;
 	} else { /* wait-event timeout */
 		pch_i2c_stop(adap);
-- 
1.7.4.4

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