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Commit 5cfafc18 authored by Michael Hennerich's avatar Michael Hennerich Committed by Ben Dooks
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i2c-bfin-twi: add debug output for error status 



Add some debug() code to decode the error register.

Signed-off-by: default avatarMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
Signed-off-by: default avatarBen Dooks <ben-linux@fluff.org>
parent dd7319a5

drivers/i2c/busses/i2c-bfin-twi.c

+12 −0
Original line number Diff line number Diff line
@@ -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.

		 */