--- zzzz-none-000/linux-3.10.107/drivers/input/mouse/elantech.h	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/drivers/input/mouse/elantech.h	2021-02-04 17:41:59.000000000 +0000
@@ -94,6 +94,7 @@
 #define PACKET_V4_HEAD			0x05
 #define PACKET_V4_MOTION		0x06
 #define PACKET_V4_STATUS		0x07
+#define PACKET_TRACKPOINT		0x08
 
 /*
  * track up to 5 fingers for v4 hardware
@@ -114,6 +115,8 @@
 };
 
 struct elantech_data {
+	struct input_dev *tp_dev;	/* Relative device for trackpoint */
+	char tp_phys[32];
 	unsigned char reg_07;
 	unsigned char reg_10;
 	unsigned char reg_11;
@@ -126,9 +129,11 @@
 	unsigned char reg_26;
 	unsigned char debug;
 	unsigned char capabilities[3];
+	unsigned char samples[3];
 	bool paritycheck;
 	bool jumpy_cursor;
 	bool reports_pressure;
+	bool crc_enabled;
 	bool set_hw_resolution;
 	unsigned char hw_version;
 	unsigned int fw_version;