make it able to enable/disable the TP point rotate

you can enable it by add "dtoverlay=reTerminal,tp_rotate=1" or "dtparam=rp_rotate=1" to /boot/config.txt
Seeed-Studio · Aug 10, 2021 · f972140 · f972140
1 parent d20b05b
commit f972140
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diff --git a/modules/mipi_dsi/mipi_dsi.h b/modules/mipi_dsi/mipi_dsi.h
@@ -115,6 +115,7 @@ struct i2c_mipi_dsi {
 	// tp
 	struct input_dev *input;
 	struct touchscreen_properties prop;
+	uint32_t tp_point_rotate;
 
 	// backlight
 	int brightness;

diff --git a/modules/mipi_dsi/mipi_dsi_drv.c b/modules/mipi_dsi/mipi_dsi_drv.c
@@ -365,6 +365,11 @@ static int i2c_md_probe(struct i2c_client *i2c, const struct i2c_device_id *id)
 	}
 	i2c_md_write(md, REG_MCU_AUTO_RESET, (md->mcu_auto_reset&0xff));
 
+	ret = device_property_read_u32(dev, "tp_point_rotate", &md->tp_point_rotate);
+	if(ret < 0){	
+		dev_err(dev, "Can't get the data of tp_point_rotate!\n");
+	}
+
 	DBG_FUNC("finished.");
 
 	return 0;

diff --git a/modules/mipi_dsi/touch_panel.c b/modules/mipi_dsi/touch_panel.c
@@ -46,6 +46,41 @@ static int goodix_ts_read_input_report(struct i2c_mipi_dsi *md, u8 *data)
 	return -ENOMSG;
 }
 
+//TODO
+//need more work for it's compatibility
+static void x_y_rotate(int *x, int *y)
+{
+        int temp_x,temp_y;
+        int temp;
+
+        if(*x < 0 || *y < 0) {
+		printk(KERN_ERR"%s<%d> parameter error\n", __func__, __LINE__);
+                return ;
+	}
+        //1 move rectangle center to (0,0)
+        temp_x = *x - TP_DEFAULT_WIDTH/2;
+        temp_y = *y - TP_DEFAULT_HEIGHT/2;
+
+        //2 rotate the point anti-clockwise for 90 degree
+        temp = temp_x;
+        temp_x = temp_y;
+        temp_y = temp;
+
+        temp_x *= (-1);
+        temp_y *= 1;
+
+        //3 zoom
+        temp_x = temp_x * TP_DEFAULT_WIDTH / TP_DEFAULT_HEIGHT;
+        temp_y = temp_y * TP_DEFAULT_HEIGHT / TP_DEFAULT_WIDTH;
+
+        //4 move rectangle center back to (TP_DEFAULT_WIDTH/2, TP_DEFAULT_HEIGHT/2)
+        temp_x += TP_DEFAULT_WIDTH/2;
+        temp_y += TP_DEFAULT_HEIGHT/2;
+
+        *x = temp_x;
+        *y = temp_y;
+}
+
 static void goodix_ts_report_touch_8b(struct i2c_mipi_dsi *md, u8 *coor_data)
 {
 	struct input_dev *input_dev = md->input;
@@ -62,6 +97,9 @@ static void goodix_ts_report_touch_8b(struct i2c_mipi_dsi *md, u8 *coor_data)
 	input_y <<= 8;
 	input_y += coor_data[2];
 
+	if(md->tp_point_rotate)
+		x_y_rotate(&input_x, &input_y);
+
 	input_mt_slot(input_dev, id);
 	input_mt_report_slot_state(input_dev, MT_TOOL_FINGER, true);
 	touchscreen_report_pos(input_dev, &md->prop, input_x, input_y, true);

diff --git a/overlays/rpi/reTerminal-overlay.dts b/overlays/rpi/reTerminal-overlay.dts
@@ -107,6 +107,7 @@
 				reg = <0x45>;
 
 				mcu_auto_reset_enable = <0>;
+				tp_point_rotate = <0>;
 
 				port {
 					panel_dsi_port: endpoint {
@@ -237,6 +238,7 @@
 		key3 = <&usr_btn3>,"linux,code:0";
 
 		mcu_auto_reset = <&mipi_dsi>,"mcu_auto_reset_enable:0";
+		tp_rotate = <&mipi_dsi>,"tp_point_rotate:0";
 	};
 };