diff --git a/sys/dev/hid/hidms.c b/sys/dev/hid/hidms.c
index 5831b677200a..c0ddc3cbb007 100644
--- a/sys/dev/hid/hidms.c
+++ b/sys/dev/hid/hidms.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: hidms.c,v 1.2 2018/05/25 15:52:45 ryoon Exp $	*/
+/*	$NetBSD: hidms.c,v 1.3 2019/07/09 12:52:51 ryoon Exp $	*/
 
 /*
  * Copyright (c) 1998, 2017 The NetBSD Foundation, Inc.
@@ -35,7 +35,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: hidms.c,v 1.2 2018/05/25 15:52:45 ryoon Exp $");
+__KERNEL_RCSID(0, "$NetBSD: hidms.c,v 1.3 2019/07/09 12:52:51 ryoon Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -267,6 +267,7 @@ hidms_intr(struct hidms *ms, void *ibuf, u_int len)
 	if (ms->flags & HIDMS_ABS) {
 		flags |= (WSMOUSE_INPUT_ABSOLUTE_X | WSMOUSE_INPUT_ABSOLUTE_Y);
 		dy = hid_get_data(ibuf, &ms->hidms_loc_y);
+		tpcalib_trans(&ms->sc_tpcalib, dx, dy, &dx, &dy);
 	} else
 		dy = -hid_get_data(ibuf, &ms->hidms_loc_y);
 	dz =  hid_get_data(ibuf, &ms->hidms_loc_z);
diff --git a/sys/dev/hid/hidms.h b/sys/dev/hid/hidms.h
index 988f57b93678..81e6363ed452 100644
--- a/sys/dev/hid/hidms.h
+++ b/sys/dev/hid/hidms.h
@@ -1,4 +1,4 @@
-/*	$NetBSD: hidms.h,v 1.1 2017/12/10 17:03:07 bouyer Exp $	*/
+/*	$NetBSD: hidms.h,v 1.2 2019/07/09 12:52:51 ryoon Exp $	*/
 
 /*
  * Copyright (c) 1998, 2017 The NetBSD Foundation, Inc.
@@ -32,6 +32,7 @@
 
 #include <dev/wscons/wsconsio.h>
 #include <dev/wscons/wsmousevar.h>
+#include <dev/wscons/tpcalibvar.h>
 
 #define MAX_BUTTONS	31	/* must not exceed size of sc_buttons */
 
@@ -55,6 +56,9 @@ struct hidms {
 
 	uint32_t hidms_buttons;	/* mouse button status */
 	device_t hidms_wsmousedev;
+
+	struct tpcalib_softc sc_tpcalib; /* calibration */
+	struct wsmouse_calibcoords sc_calibcoords;
 };
 
 bool hidms_setup(device_t, struct hidms *, int, void *, int);
diff --git a/sys/dev/i2c/ims.c b/sys/dev/i2c/ims.c
index c6912264f001..b042de793780 100644
--- a/sys/dev/i2c/ims.c
+++ b/sys/dev/i2c/ims.c
@@ -1,4 +1,4 @@
-/* $NetBSD: ims.c,v 1.1 2017/12/10 17:05:54 bouyer Exp $ */
+/* $NetBSD: ims.c,v 1.2 2019/07/09 12:52:51 ryoon Exp $ */
 /* $OpenBSD ims.c,v 1.1 2016/01/12 01:11:15 jcs Exp $ */
 
 /*
@@ -20,7 +20,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ims.c,v 1.1 2017/12/10 17:05:54 bouyer Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ims.c,v 1.2 2019/07/09 12:52:51 ryoon Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -92,6 +92,8 @@ ims_attach(device_t parent, device_t self, void *aux)
 	struct ihidev_attach_arg *iha = (struct ihidev_attach_arg *)aux;
 	int size, repid;
 	void *desc;
+	struct hid_data * d __debugused;
+	struct hid_item item __debugused;
 
 	sc->sc_hdev.sc_idev = self;
 	sc->sc_hdev.sc_intr = ims_intr;
@@ -110,6 +112,30 @@ ims_attach(device_t parent, device_t self, void *aux)
 	if (!hidms_setup(self, ms, iha->reportid, desc, size) != 0)
 		return;
 
+#if defined(DEBUG)
+	/* calibrate the touchscreen */
+	memset(&sc->sc_ms.sc_calibcoords, 0, sizeof(sc->sc_ms.sc_calibcoords));
+	d = hid_start_parse(desc, size, hid_input);
+	if (d != NULL) {
+		while (hid_get_item(d, &item)) {
+			if (item.kind != hid_input
+			    || HID_GET_USAGE_PAGE(item.usage) != HUP_GENERIC_DESKTOP
+			    || item.report_ID != sc->sc_hdev.sc_report_id)
+				continue;
+			if (HID_GET_USAGE(item.usage) == HUG_X) {
+				aprint_normal("X range: %d - %d\n", item.logical_minimum, item.logical_maximum);
+			}
+			if (HID_GET_USAGE(item.usage) == HUG_Y) {
+				aprint_normal("Y range: %d - %d\n", item.logical_minimum, item.logical_maximum);
+			}
+		}
+		hid_end_parse(d);
+	}
+#endif
+	tpcalib_init(&sc->sc_ms.sc_tpcalib);
+	tpcalib_ioctl(&sc->sc_ms.sc_tpcalib, WSMOUSEIO_SCALIBCOORDS,
+	    (void *)&sc->sc_ms.sc_calibcoords, 0, 0);
+
 	hidms_attach(self, ms, &ims_accessops);
 }
 
@@ -199,6 +225,9 @@ ims_ioctl(void *v, u_long cmd, void *data, int flag, struct lwp *l)
 			*(u_int *)data = WSMOUSE_TYPE_USB;
 		}
 		return 0;
+	case WSMOUSEIO_SCALIBCOORDS:
+	case WSMOUSEIO_GCALIBCOORDS:
+		return tpcalib_ioctl(&sc->sc_ms.sc_tpcalib, cmd, data, flag, l);
 	}
 	return EPASSTHROUGH;
 }