The 6-byte protocol supports reporting the position when three fingers
are pressed, exactly like when one finger is pressed. Report this.
In addition, it is also distinguishes between 3 and 4 fingers pressed.
Signed-off-by: Éric Piel <eric.piel@xxxxxxxxxxxxxxxx>
---
drivers/input/mouse/elantech.c | 10 ++++++++++
1 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index b09b458..633f100 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -257,6 +257,14 @@ static void elantech_report_absolute_v2(struct psmouse *psmouse)
input_report_key(dev, BTN_TOUCH, fingers != 0);
switch (fingers) {
+ case 3:
+ /*
+ * Same as one finger, except report of more than 3 fingers:
+ * byte 3: n4 . w1 w0 . . . .
+ */
+ if (packet[3] & 0x80)
+ fingers = 4;
+ /* pass through... */
case 1:
/*
* byte 1: . . . . . x10 x9 x8
@@ -309,6 +317,7 @@ static void elantech_report_absolute_v2(struct psmouse *psmouse)
input_report_key(dev, BTN_TOOL_FINGER, fingers == 1);
input_report_key(dev, BTN_TOOL_DOUBLETAP, fingers == 2);
input_report_key(dev, BTN_TOOL_TRIPLETAP, fingers == 3);
+ input_report_key(dev, BTN_TOOL_QUADTAP, fingers == 4);
input_report_key(dev, BTN_LEFT, packet[0] & 0x01);
input_report_key(dev, BTN_RIGHT, packet[0] & 0x02);
@@ -519,6 +528,7 @@ static void elantech_set_input_params(struct psmouse *psmouse)
break;
case 2:
+ __set_bit(BTN_TOOL_QUADTAP, dev->keybit);
input_set_abs_params(dev, ABS_X, ETP_XMIN_V2, ETP_XMAX_V2, 0, 0);
input_set_abs_params(dev, ABS_Y, ETP_YMIN_V2, ETP_YMAX_V2, 0, 0);
input_set_abs_params(dev, ABS_HAT0X, ETP_2FT_XMIN, ETP_2FT_XMAX, 0, 0);
--
1.7.1
--
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