From 234ba68e1aa4cd6fdbcf35e543169552cb68c65c Mon Sep 17 00:00:00 2001
From: thpert <thpert-spam@yahoo.fr>
Date: Fri, 20 Mar 2015 16:32:22 +0100
Subject: [PATCH] HID: Add support for Hanns.G HT231HPB Touchscreen

---
 drivers/hid/hid-ids.h        | 4 ++++
 drivers/hid/hid-multitouch.c | 5 +++++
 2 files changed, 9 insertions(+)

diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index 1ff312f572a15f..b2099d236d3546 100755
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -792,3 +792,7 @@
 #define USB_VENDOR_ID_FOCALTECH 0x2808
 #define USB_DEVICE_ID_FOCALTECH_TOUCH   0x81C9
 #endif
+
+/* Silicon Integrated Systems Corp */
+#define USB_VENDOR_ID_SILICON     0x0457
+#define USB_DEVICE_ID_SILICON_TOUCH     0x1057
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index e8d42b11816e8d..5744734477957b 100755
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -1177,6 +1177,11 @@ static const struct hid_device_id mt_devices[] = {
 		HID_USB_DEVICE(USB_VENDOR_ID_ZYTRONIC,
 			USB_DEVICE_ID_ZYTRONIC_ZXY100) },
 
+	 /* Silicon Integrated Systems Corp */
+  	{ .driver_data = MT_CLS_DEFAULT,
+        HID_USB_DEVICE(USB_VENDOR_ID_SILICON,
+            USB_DEVICE_ID_SILICON_TOUCH) },
+
 	{ }
 };
 MODULE_DEVICE_TABLE(hid, mt_devices);