input: wacom - add 0xE5 (MT device) support

index f7fe091..cad0ee2 100644
@@ -308,6 +308,10 @@ static int wacom_parse_hid(struct usb_interface *intf,
 							features->pktlen = WACOM_PKGLEN_TPC2FG;
 							features->touch_max = 2;
 						}
+
+						if (features->type == MTSCREEN)
+							features->pktlen = WACOM_PKGLEN_MTOUCH;
+
 						if (features->type == BAMBOO_PT) {
 							/* need to reset back */
 							features->pktlen = WACOM_PKGLEN_BBTOUCH;

@@ -342,18 +346,15 @@ static int wacom_parse_hid(struct usb_interface *intf,
 			case HID_USAGE_Y:
 				if (usage == WCM_DESKTOP) {
 					if (finger) {
-						features->device_type = BTN_TOOL_FINGER;
-						if (features->type == TABLETPC2FG) {
-							/* need to reset back */
-							features->pktlen = WACOM_PKGLEN_TPC2FG;
+						int type = features->type;
+
+						if (type == TABLETPC2FG || type == MTSCREEN) {
 							features->y_max =
 								get_unaligned_le16(&report[i + 3]);
 							features->y_phy =
 								get_unaligned_le16(&report[i + 6]);
 							i += 7;
-						} else if (features->type == BAMBOO_PT) {
-							/* need to reset back */
-							features->pktlen = WACOM_PKGLEN_BBTOUCH;
+						} else if (type == BAMBOO_PT) {
 							features->y_phy =
 								get_unaligned_le16(&report[i + 3]);
 							features->y_max =

@@ -367,10 +368,6 @@ static int wacom_parse_hid(struct usb_interface *intf,
 							i += 4;
 						}
 					} else if (pen) {
-						/* penabled only accepts exact bytes of data */
-						if (features->type == TABLETPC2FG)
-							features->pktlen = WACOM_PKGLEN_GRAPHIRE;
-						features->device_type = BTN_TOOL_PEN;
 						features->y_max =
 							get_unaligned_le16(&report[i + 3]);
 						i += 4;

@@ -433,24 +430,28 @@ static int wacom_query_tablet_data(struct usb_interface *intf, struct wacom_feat
 	if (!rep_data)
 		return error;
 
-	/* ask to report tablet data if it is MT Tablet PC or
-	 * not a Tablet PC */
-	if (features->type == TABLETPC2FG) {
-		do {
-			rep_data[0] = 3;
-			rep_data[1] = 4;
-			rep_data[2] = 0;
-			rep_data[3] = 0;
-			report_id = 3;
-			error = wacom_set_report(intf, WAC_HID_FEATURE_REPORT,
+	/* ask to report Wacom data */
+	if (features->device_type == BTN_TOOL_FINGER) {
+		/* if it is an MT Tablet PC touch */
+		if ((features->type == TABLETPC2FG) ||
+		    (features->type == MTSCREEN)) {
+			do {
+				rep_data[0] = 3;
+				rep_data[1] = 4;
+				rep_data[2] = 0;
+				rep_data[3] = 0;
+				report_id = 3;
+				error = wacom_set_report(intf,
+						 WAC_HID_FEATURE_REPORT,
 						 report_id, rep_data, 4, 1);
-			if (error >= 0)
-				error = wacom_get_report(intf,
+				if (error >= 0)
+					error = wacom_get_report(intf,
 						WAC_HID_FEATURE_REPORT,
 						report_id, rep_data, 4, 1);
-		} while ((error < 0 || rep_data[1] != 4) && limit++ < WAC_MSG_RETRIES);
-	} else if (features->type != TABLETPC &&
-		   features->device_type == BTN_TOOL_PEN) {
+			} while ((error < 0 || rep_data[1] != 4) &&
+				 limit++ < WAC_MSG_RETRIES);
+		}
+	} else if (features->type != TABLETPC) { /* or not a Tablet PC pen */
 		do {
 			rep_data[0] = 2;
 			rep_data[1] = 2;

@@ -482,9 +483,9 @@ static int wacom_retrieve_hid_descriptor(struct usb_interface *intf,
 	features->pressure_fuzz = 0;
 	features->distance_fuzz = 0;
 
-	/* only Tablet PCs and Bamboo P&T need to retrieve the info */
+	/* only devices that support touch need to retrieve the info */
 	if ((features->type != TABLETPC) && (features->type != TABLETPC2FG) &&
-	    (features->type != BAMBOO_PT))
+	    (features->type != BAMBOO_PT) && (features->type != MTSCREEN))
 		goto out;
 
 	if (usb_get_extra_descriptor(interface, HID_DEVICET_HID, &hid_desc)) {

144 lines not on this page · raw message

index 1c9dc3e..265b09f 100644
@@ -24,6 +24,10 @@
 #define WACOM_PKGLEN_BBTOUCH	20
 #define WACOM_PKGLEN_BBTOUCH3	64
 #define WACOM_PKGLEN_BBPEN	10
+#define WACOM_PKGLEN_MTOUCH	62
+
+/* wacom data size per MT contact */
+#define WACOM_BYTES_PER_MT_PACKET	11
 
 /* device IDs */
 #define STYLUS_DEVICE_ID	0x02

@@ -39,6 +43,7 @@
 #define WACOM_REPORT_INTUOSPAD		12
 #define WACOM_REPORT_TPC1FG		6
 #define WACOM_REPORT_TPC2FG		13
+#define WACOM_REPORT_TPCMT		13
 #define WACOM_REPORT_TPCHID		15
 #define WACOM_REPORT_TPCST		16
 

@@ -68,6 +73,7 @@ enum {
 	WACOM_MO,
 	TABLETPC,
 	TABLETPC2FG,
+	MTSCREEN,
 	MAX_TYPE
 };
 

@@ -92,6 +98,8 @@ struct wacom_features {
 	int distance_fuzz;
 	unsigned quirks;
 	unsigned touch_max;
+	unsigned num_contacts;
+	unsigned num_contacts_left;
 };
 
 struct wacom_shared {