From 773d09ef707fac5d476e21b1a0a0506dd290156e Mon Sep 17 00:00:00 2001
From: Jake Day <jake@ninebysix.com>
Date: Thu, 10 Aug 2017 13:48:33 -0400
Subject: [PATCH] This patch supports single touch and virtual mouse in IPTS

---
 drivers/hid/hid-multitouch.c | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index be5bea15c..937a7084a 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -558,8 +558,12 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 			if (field->index >= field->report->maxfield ||
 			    usage->usage_index >= field->report_count)
 				return 1;
-			td->cc_index = field->index;
-			td->cc_value_index = usage->usage_index;
+
+			if (td->cc_index < 0) {
+				td->cc_index = field->index;
+				td->cc_value_index = usage->usage_index;
+			}
+
 			return 1;
 		case HID_DG_CONTACTMAX:
 			/* we don't set td->last_slot_field as contactcount and
@@ -857,8 +861,10 @@ static int mt_input_mapping(struct hid_device *hdev, struct hid_input *hi,
 	    field->application != HID_DG_TOUCHSCREEN &&
 	    field->application != HID_DG_PEN &&
 	    field->application != HID_DG_TOUCHPAD &&
+	    field->application != HID_GD_MOUSE &&
 	    field->application != HID_GD_KEYBOARD &&
-	    field->application != HID_CP_CONSUMER_CONTROL)
+	    field->application != HID_CP_CONSUMER_CONTROL &&
+	    field->logical != HID_DG_TOUCHSCREEN)
 		return -1;
 
 	/*
@@ -1041,6 +1047,10 @@ static int mt_input_configured(struct hid_device *hdev, struct hid_input *hi)
 		suffix = "Pen";
 		/* force BTN_STYLUS to allow tablet matching in udev */
 		__set_bit(BTN_STYLUS, hi->input->keybit);
+	} else if (hi->report->field[0]->logical == HID_DG_TOUCHSCREEN) {
+		suffix = "SingleTouch";
+		/* force BTN_STYLUS to allow tablet matching in udev */
+		__set_bit(BTN_STYLUS, hi->input->keybit);
 	} else {
 		switch (field->application) {
 		case HID_GD_KEYBOARD: