From: Michael Hennerich <michael.hennerich@xxxxxxxxxx> Add some debug() code to decode the error register. Signed-off-by: Michael Hennerich <michael.hennerich@xxxxxxxxxx> Signed-off-by: Mike Frysinger <vapier@xxxxxxxxxx> --- drivers/i2c/busses/i2c-bfin-twi.c | 12 ++++++++++++ 1 files changed, 12 insertions(+), 0 deletions(-) diff --git a/drivers/i2c/busses/i2c-bfin-twi.c b/drivers/i2c/busses/i2c-bfin-twi.c index e016b1b..758bb1f 100644 --- a/drivers/i2c/busses/i2c-bfin-twi.c +++ b/drivers/i2c/busses/i2c-bfin-twi.c @@ -156,6 +156,18 @@ static void bfin_twi_handle_interrupt(struct bfin_twi_iface *iface) write_MASTER_CTL(iface, 0); SSYNC(); iface->result = -EIO; + + if (mast_stat & LOSTARB) + dev_dbg(&iface->adap.dev, "Lost Arbitration\n"); + if (mast_stat & ANAK) + dev_dbg(&iface->adap.dev, "Address Not Acknowledged\n"); + if (mast_stat & DNAK) + dev_dbg(&iface->adap.dev, "Data Not Acknowledged\n"); + if (mast_stat & BUFRDERR) + dev_dbg(&iface->adap.dev, "Buffer Read Error\n"); + if (mast_stat & BUFWRERR) + dev_dbg(&iface->adap.dev, "Buffer Write Error\n"); + /* if both err and complete int stats are set, return proper * results. */ -- 1.7.0.2 -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
