Submitted by: Nicolas Souchu <nsouch@freebsd.org>

Updated to support bt848 driver and MSP3400 audio chip.
This adds changes made in 1.4.2.1 and 1.4.2.2 from RELENG_3

1 files changed, 50 insertions, 1 deletions

diff --git a/sys/dev/iicbus/iiconf.c b/sys/dev/iicbus/iiconf.c
index 47f1686..353a207 100644
--- a/sys/dev/iicbus/iiconf.c
+++ b/sys/dev/iicbus/iiconf.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: iiconf.c,v 1.3 1998/11/22 22:01:42 nsouch Exp $
+ *	$Id: iiconf.c,v 1.4 1999/01/09 18:08:24 nsouch Exp $
  *
  */
 #include <sys/param.h>
@@ -196,6 +196,28 @@ iicbus_start(device_t bus, u_char slave, int timeout)
 }
 
 /*
+ * iicbus_repeated_start()
+ *
+ * Send start condition to the slave addressed by 'slave'
+ */
+int
+iicbus_repeated_start(device_t bus, u_char slave, int timeout)
+{
+	struct iicbus_softc *sc = (struct iicbus_softc *)device_get_softc(bus);
+	int error = 0;
+
+	if (!sc->started)
+		return (EINVAL);     /* bus should have been already started */
+
+	if (!(error = IICBUS_START(device_get_parent(bus), slave, timeout)))
+		sc->started = slave;
+	else
+		sc->started = 0;
+
+	return (error);
+}
+
+/*
  * iicbus_stop()
  *
  * Send stop condition to the bus
@@ -254,6 +276,33 @@ iicbus_read(device_t bus, char *buf, int len, int *read, int last, int delay)
 }
 
 /*
+ * iicbus_write_byte()
+ *
+ * Write a byte to the slave previously started by iicbus_start() call
+ */
+int
+iicbus_write_byte(device_t bus, char byte, int timeout)
+{
+	char data = byte;
+	int sent;
+
+	return (iicbus_write(bus, &data, 1, &sent, timeout));
+}
+
+/*
+ * iicbus_read_byte()
+ *
+ * Read a byte from the slave previously started by iicbus_start() call
+ */
+int
+iicbus_read_byte(device_t bus, char *byte, int timeout)
+{
+	int read;
+
+	return (iicbus_read(bus, byte, 1, &read, IIC_LAST_READ, timeout));
+}
+
+/*
  * iicbus_block_write()
  *
  * Write a block of data to slave ; start/stop protocol managed