1 files changed, 92 insertions, 0 deletions
diff --git a/hw/kdrive/linux/bus.c b/hw/kdrive/linux/bus.c
new file mode 100644
index 000000000..9e4bce0c8
--- /dev/null
+++ b/hw/kdrive/linux/bus.c
@@ -0,0 +1,92 @@
+/*
+ * $XFree86$
+ *
+ * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Keith Packard makes no
+ * representations about the suitability of this software for any purpose.  It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#define NEED_EVENTS
+#include "X.h"
+#include "Xproto.h"
+#include "inputstr.h"
+#include "scrnintstr.h"
+#include "kdrive.h"
+#include "Xpoll.h"
+
+/* /dev/adbmouse is a busmouse */
+
+void
+BusRead (int adbPort)
+{
+    unsigned char   buf[3];
+    unsigned char   *b;
+    int		    n;
+    int		    dx, dy;
+    unsigned long   flags;
+
+    n = read (adbPort, buf, 3);
+    if (n == 3)
+    {
+	flags = KD_MOUSE_DELTA;
+	dx = (char) buf[1];
+	dy = -(char) buf[2];
+	if ((buf[0] & 4) == 0)
+	    flags |= KD_BUTTON_1;
+	if ((buf[0] & 2) == 0)
+	    flags |= KD_BUTTON_2;
+	if ((buf[0] & 1) == 0)
+	    flags |= KD_BUTTON_3;
+        KdEnqueueMouseEvent (flags, dx, dy);
+    }
+}
+
+char	*BusNames[] = {
+    "/dev/adbmouse",
+    "/dev/mouse",
+};
+
+#define NUM_BUS_NAMES	(sizeof (BusNames) / sizeof (BusNames[0]))
+
+int
+BusInit (void)
+{
+    int	    i;
+    int	    busPort;
+
+    for (i = 0; i < NUM_BUS_NAMES; i++)
+    {
+	busPort = open (BusNames[i], 0);
+	if (busPort >= 0)
+	    return busPort;
+    }
+}
+
+void
+BusFini (int busPort)
+{
+    if (busPort >= 0)
+	close (busPort);
+}
+
+KdMouseFuncs BusMouseFuncs = {
+    BusInit,
+    BusRead,
+    BusFini
+};