Messages in this thread Patch in this message | | | From | Tomoya MORINAGA <> | Subject | [PATCH 6/7 v2] i2c-eg20t: Add initialize processing in case i2c-error occurs | Date | Wed, 5 Oct 2011 13:17:43 +0900 |
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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> --- 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 66de0a9..cf64e21 100644 --- a/drivers/i2c/busses/i2c-eg20t.c +++ b/drivers/i2c/busses/i2c-eg20t.c @@ -286,6 +286,7 @@ static s32 pch_i2c_wait_for_bus_idle(struct i2c_algo_pch_data *adap, if (timeout == 0) { pch_err(adap, "%s: Timeout Error.return%d\n", __func__, -ETIME); + pch_i2c_init(adap); return -ETIME; } @@ -430,6 +431,7 @@ 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); @@ -546,6 +548,7 @@ 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); -- 1.7.6.4
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