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.
Tested-by: Michal Hocko <mhocko@xxxxxxxx>
Signed-off-by: Ben Gamari <ben@xxxxxxxxxxxxxxxx>
---
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..308f289 100644
--- a/drivers/input/mouse/alps.c
+++ b/drivers/input/mouse/alps.c
@@ -2745,6 +2745,9 @@ static int alps_set_protocol(struct psmouse *psmouse,
if (alps_set_defaults_ss4_v2(psmouse, priv))
return -EIO;
+ if (priv->fw_ver[1] == 0x1)
+ priv->flags |= ALPS_DUALPOINT | ALPS_DUALPOINT_WITH_PRESSURE;
+
break;
}
@@ -2817,6 +2820,9 @@ 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;
} else {
psmouse_dbg(psmouse,
"Likely not an ALPS touchpad: E7=%3ph, EC=%3ph\n", e7, ec);
--
2.9.3
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