@@ -129,6 +129,9 @@ struct ad7879 {
u16 cmd_crtl1;
u16 cmd_crtl2;
u16 cmd_crtl3;
+ int x;
+ int y;
+ int Rt;
};
static int ad7879_read(struct ad7879 *ts, u8 reg)
@@ -175,13 +178,29 @@ static int ad7879_report(struct ad7879 *ts)
Rt /= z1;
Rt = (Rt + 2047) >> 12;
- if (!timer_pending(&ts->timer))
+ /*
+ * Sample found inconsistent, pressure is beyond
+ * the maximum. Don't report it to user space.
+ */
+ if (Rt > ts->pressure_max)
+ return -EINVAL;
+
+ if (!timer_pending(&ts->timer)) {
+ ts->x = x;
+ ts->y = y;
+ ts->Rt = Rt;
input_report_key(input_dev, BTN_TOUCH, 1);
-
- input_report_abs(input_dev, ABS_X, x);
- input_report_abs(input_dev, ABS_Y, y);
- input_report_abs(input_dev, ABS_PRESSURE, Rt);
- input_sync(input_dev);
+ }
+
+ input_report_abs(input_dev, ABS_X, ts->x);
+ input_report_abs(input_dev, ABS_Y, ts->y);
+ input_report_abs(input_dev, ABS_PRESSURE, ts->Rt);
+ input_sync(input_dev);
+
+ ts->x = x;
+ ts->y = y;
+ ts->Rt = Rt;
+
return 0;
}