Input: psmouse - attempt to re-synchronize mouse every 5 seconds
This should help driver to deal vith KVMs that reset mice when
switching between boxes.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index 2447433..2141501 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -348,6 +348,40 @@
return 0;
}
+/*
+ * alps_poll() - poll the touchpad for current motion packet.
+ * Used in resync.
+ */
+static int alps_poll(struct psmouse *psmouse)
+{
+ struct alps_data *priv = psmouse->private;
+ unsigned char buf[6];
+ int poll_failed;
+
+ if (priv->i->flags & ALPS_PASS)
+ alps_passthrough_mode(psmouse, 1);
+
+ poll_failed = ps2_command(&psmouse->ps2dev, buf,
+ PSMOUSE_CMD_POLL | (psmouse->pktsize << 8)) < 0;
+
+ if (priv->i->flags & ALPS_PASS)
+ alps_passthrough_mode(psmouse, 0);
+
+ if (poll_failed || (buf[0] & priv->i->mask0) != priv->i->byte0)
+ return -1;
+
+ if ((psmouse->badbyte & 0xc8) == 0x08) {
+/*
+ * Poll the track stick ...
+ */
+ if (ps2_command(&psmouse->ps2dev, buf, PSMOUSE_CMD_POLL | (3 << 8)))
+ return -1;
+ }
+
+ memcpy(psmouse->packet, buf, sizeof(buf));
+ return 0;
+}
+
static int alps_reconnect(struct psmouse *psmouse)
{
struct alps_data *priv = psmouse->private;
@@ -451,10 +485,14 @@
input_register_device(priv->dev2);
psmouse->protocol_handler = alps_process_byte;
+ psmouse->poll = alps_poll;
psmouse->disconnect = alps_disconnect;
psmouse->reconnect = alps_reconnect;
psmouse->pktsize = 6;
+ /* We are having trouble resyncing ALPS touchpads so disable it for now */
+ psmouse->resync_time = 0;
+
return 0;
init_fail: