Here we introduce logic in alps_identify to set the ALPS_DUALPOINT flag
for touchpad hardware responding to E7 report with 73 03 28, as is found
in the Dell Latitude E7470.
---
drivers/input/mouse/alps.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
index 25d2cad..431bc26 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -2776,6 +2776,7 @@ static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
const struct alps_protocol_info *protocol;
unsigned char e6[4], e7[4], ec[4];
int error;
+ int flags = 0;
/*
* First try "E6 report".
@@ -2817,6 +2818,10 @@ static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
} else if (e7[0] == 0x73 && e7[1] == 0x03 &&
e7[2] == 0x14 && ec[1] == 0x02) {
protocol = &alps_v8_protocol_data;
+ } else if (e7[0] == 0x73 && e7[1] == 0x03 &&
+ e7[2] == 0x28 && ec[1] == 0x01) {
+ protocol = &alps_v8_protocol_data;
+ flags |= ALPS_DUALPOINT | ALPS_DUALPOINT_WITH_PRESSURE;
} else {
psmouse_dbg(psmouse,
"Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec);
@@ -2830,6 +2835,7 @@ static int alps_identify(struct psmouse *psmouse, struct alps_data *priv)
error = alps_set_protocol(psmouse, priv, protocol);
if (error)
return error;
+ priv->flags |= flags;
}
return 0;
--
2.8.1
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