mirror of
https://github.com/torvalds/linux.git
synced 2024-11-08 21:21:47 +00:00
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>
This commit is contained in:
parent
cb59f5253a
commit
24597bf801
@ -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);
|
||||
|
Loading…
Reference in New Issue
Block a user