PERFORCE change 94551 for review

[Warner Losh]

http://perforce.freebsd.org/chv.cgi?CH=94551

Change 94551 by imp at imp_Speedy on 2006/04/03 19:30:42

	Need callback, I think, for request/release bus.  If not for this,
	then for the specialized iicbus bridges that we're going to use in
	our design.

Affected files ...

.. //depot/projects/arm/src/sys/arm/at91/at91_twi.c#9 edit

Differences ...

==== //depot/projects/arm/src/sys/arm/at91/at91_twi.c#9 (text+ko) ====

@@ -42,6 +42,8 @@
 #include <arm/at91/at91_twireg.h>
 #include <arm/at91/at91_twiio.h>
 
+#include <dev/iicbus/iiconf.h>
+#include <dev/iicbus/iicbus.h>
 #include "iicbus_if.h"
 
 struct at91_twi_softc
@@ -455,6 +457,25 @@
 	return EIO;
 }
 
+static int
+at91_twi_callback(device_t dev, int index, caddr_t *data)
+{
+	int error = 0;
+
+	switch (index) {
+	case IIC_REQUEST_BUS:
+		break;
+
+	case IIC_RELEASE_BUS:
+		break;
+
+	default:
+		error = EINVAL;
+	}
+
+	return (error);
+}
+
 static device_method_t at91_twi_methods[] = {
 	/* Device interface */
 	DEVMETHOD(device_probe,		at91_twi_probe),
@@ -462,7 +483,7 @@
 	DEVMETHOD(device_detach,	at91_twi_detach),
 
 	/* iicbus interface */
-//	DEVMETHOD(iicbus_callback,	iicbus_null_callback),
+	DEVMETHOD(iicbus_callback,	at91_twi_callback),
 	DEVMETHOD(iicbus_repeated_start, at91_twi_repeated_start),
 	DEVMETHOD(iicbus_start,		at91_twi_start),
 	DEVMETHOD(iicbus_stop,		at91_twi_stop),