On V2 devices the DualPoint Stick reports bare packets, these should be
reported via the "AlpsPS/2 ALPS DualPoint Stick" dev2 evdev node, which also
has the INPUT_PROP_POINTING_STICK propbit set.
Note that since there is no way to distuingish these packets from an external
ps/2 mouse (in sofar as these laptops have an external ps/2 port) this means
that we will be reporting ps/2 mouse events via this evdev node too, as we've
been doing in kernel 3.19 and older.
This has been tested on a Dell Latitude D620 and a Dell Latitude E6400,
which both have a V2 touchpad + a DualPoint Stick which reports bare packets.
Signed-off-by: Hans de Goede <hdegoede@xxxxxxxxxx>
---
drivers/input/mouse/alps.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index f2c5545..80b6eca 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -1161,7 +1161,12 @@ static void alps_report_bare_ps2_packet(struct psmouse *psmouse,
struct alps_data *priv = psmouse->private;
struct input_dev *dev;
- if (unlikely(IS_ERR_OR_NULL(priv->dev3))) {
+ /* Figure out which device to use to report the bare packet */
+ if (priv->proto_version == ALPS_PROTO_V2 &&
+ (priv->flags & ALPS_DUALPOINT)) {
+ /* On V2 devices the DualPoint Stick reports bare packets */
+ dev = priv->dev2;
+ } else if (unlikely(IS_ERR_OR_NULL(priv->dev3))) {
/* Register dev3 mouse if we received PS/2 packet first time */
if (!IS_ERR(priv->dev3))
psmouse_queue_work(psmouse, &priv->dev3_register_work,
--
2.3.4
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