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| author | Michael Hennerich <michael.hennerich@analog.com> | 2010-03-22 03:23:17 -0400 |
|---|---|---|
| committer | Ben Dooks <ben-linux@fluff.org> | 2010-05-20 00:18:58 +0100 |
| commit | 5cfafc18f38aa6701f581bee875fb0b19f3b3b4b (patch) | |
| tree | 7ba9d852b44238ee37c50bd0d80ddf76848f81ea /drivers/i2c | |
| parent | dd7319a5289deb4e17beb8851d343e7930b32c3b (diff) | |
| download | op-kernel-dev-5cfafc18f38aa6701f581bee875fb0b19f3b3b4b.zip op-kernel-dev-5cfafc18f38aa6701f581bee875fb0b19f3b3b4b.tar.gz | |
i2c-bfin-twi: add debug output for error status
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>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | 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 441134a..0279a7a 100644 --- a/drivers/i2c/busses/i2c-bfin-twi.c +++ b/drivers/i2c/busses/i2c-bfin-twi.c @@ -157,6 +157,18 @@ 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. */ |
