[PATCH] hid-multitouch: Add LG Display Multitouch device.

[jeffbrown@android.com]

From: Jeff Brown <jeffbrown@android.com>

This panel is also known as the Dell ST2220Tc.

Signed-off-by: jeffbrown@android.com

---
 drivers/hid/Kconfig          |    1 +
 drivers/hid/hid-core.c       |    1 +
 drivers/hid/hid-ids.h        |    3 +++
 drivers/hid/hid-multitouch.c |    5 +++++
 4 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/drivers/hid/Kconfig b/drivers/hid/Kconfig
index 306b15f..3cbe8cc 100644
--- a/drivers/hid/Kconfig
+++ b/drivers/hid/Kconfig
@@ -328,6 +328,7 @@ config HID_MULTITOUCH
 	  - Hanvon dual touch panels
 	  - Ilitek dual touch panels
 	  - IrTouch Infrared USB panels
+	  - LG Display panels (Dell ST2220Tc)
 	  - Lumio CrystalTouch panels
 	  - MosArt dual-touch panels
 	  - PenMount dual touch panels
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index 1a5cf0c..11b3b39 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -1396,6 +1396,7 @@ static const struct hid_device_id hid_have_special_driver[] = {
 	{ HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
+	{ HID_USB_DEVICE(USB_VENDOR_ID_LG, USB_DEVICE_ID_LG_MULTITOUCH) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
 	{ HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h
index db63ccf..637e6e9 100644
--- a/drivers/hid/hid-ids.h
+++ b/drivers/hid/hid-ids.h
@@ -419,6 +419,9 @@
 #define USB_DEVICE_ID_LD_HYBRID		0x2090
 #define USB_DEVICE_ID_LD_HEATCONTROL	0x20A0
 
+#define USB_VENDOR_ID_LG		0x1fd2
+#define USB_DEVICE_ID_LG_MULTITOUCH	0x0064
+
 #define USB_VENDOR_ID_LOGITECH		0x046d
 #define USB_DEVICE_ID_LOGITECH_RECEIVER	0xc101
 #define USB_DEVICE_ID_LOGITECH_HARMONY_FIRST  0xc110
diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c
index 58d0e7a..9fc15e1 100644
--- a/drivers/hid/hid-multitouch.c
+++ b/drivers/hid/hid-multitouch.c
@@ -672,6 +672,11 @@ static const struct hid_device_id mt_devices[] = {
 		HID_USB_DEVICE(USB_VENDOR_ID_IRTOUCHSYSTEMS,
 			USB_DEVICE_ID_IRTOUCH_INFRARED_USB) },
 
+	/* LG Display panels */
+	{ .driver_data = MT_CLS_DEFAULT,
+		HID_USB_DEVICE(USB_VENDOR_ID_LG,
+			USB_DEVICE_ID_LG_MULTITOUCH) },
+
 	/* Lumio panels */
 	{ .driver_data = MT_CLS_CONFIDENCE_MINUS_ONE,
 		HID_USB_DEVICE(USB_VENDOR_ID_LUMIO,
-- 
1.7.0.4