i2c-eg20t: Add initialize processing in case i2c-error occurs

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@dsn.lapis-semi.com>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/i2c/busses/i2c-eg20t.c b/drivers/i2c/busses/i2c-eg20t.c
index a1bf62dbd27b..8cebef49aeac 100644
--- a/drivers/i2c/busses/i2c-eg20t.c
+++ b/drivers/i2c/busses/i2c-eg20t.c
@@ -289,6 +289,7 @@ 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;
 }
@@ -456,6 +457,7 @@ 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);
@@ -634,6 +636,7 @@ 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);