Messages in this thread Patch in this message | | | From | Mike Frysinger <> | Subject | [PATCH 2/5] i2c-bfin-twi: add debug output for error status | Date | Mon, 22 Mar 2010 03:23:17 -0400 |
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From: Michael Hennerich <michael.hennerich@analog.com>
Add some debug() code to decode the error register.
Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> --- 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
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