diff --git a/drivers/staging/greybus/control.c b/drivers/staging/greybus/control.c
index a53fa3d68280de2886e7085983cd757790f1f455..252352ce366459300f83206ceda524b3a6d4038b 100644
--- a/drivers/staging/greybus/control.c
+++ b/drivers/staging/greybus/control.c
@@ -348,6 +348,41 @@ int gb_control_bundle_activate(struct gb_control *control, u8 bundle_id)
 	return 0;
 }
 
+static int gb_control_interface_pm_status_map(u8 status)
+{
+	switch (status) {
+	case GB_CONTROL_INTF_PM_BUSY:
+		return -EBUSY;
+	case GB_CONTROL_INTF_PM_NA:
+		return -ENOMSG;
+	default:
+		return -EREMOTEIO;
+	}
+}
+
+int gb_control_interface_suspend_prepare(struct gb_control *control)
+{
+	struct gb_control_intf_pm_response response;
+	int ret;
+
+	ret = gb_operation_sync(control->connection,
+				GB_CONTROL_TYPE_INTF_SUSPEND_PREPARE, NULL, 0,
+				&response, sizeof(response));
+	if (ret) {
+		dev_err(&control->dev,
+			"failed to send interface suspend prepare: %d\n", ret);
+		return ret;
+	}
+
+	if (response.status != GB_CONTROL_INTF_PM_OK) {
+		dev_err(&control->dev, "interface error while preparing suspend: %d\n",
+			response.status);
+		return gb_control_interface_pm_status_map(response.status);
+	}
+
+	return 0;
+}
+
 static ssize_t vendor_string_show(struct device *dev,
 			struct device_attribute *attr, char *buf)
 {
diff --git a/drivers/staging/greybus/control.h b/drivers/staging/greybus/control.h
index 5ddf0138c6c5538895bd982c446f2b829c54baca..bc32ca78d2256e7d33b62484abc72e963fb72a47 100644
--- a/drivers/staging/greybus/control.h
+++ b/drivers/staging/greybus/control.h
@@ -56,4 +56,5 @@ int gb_control_bundle_suspend(struct gb_control *control, u8 bundle_id);
 int gb_control_bundle_resume(struct gb_control *control, u8 bundle_id);
 int gb_control_bundle_deactivate(struct gb_control *control, u8 bundle_id);
 int gb_control_bundle_activate(struct gb_control *control, u8 bundle_id);
+int gb_control_interface_suspend_prepare(struct gb_control *control);
 #endif /* __CONTROL_H */
diff --git a/drivers/staging/greybus/greybus_protocols.h b/drivers/staging/greybus/greybus_protocols.h
index 1ae335040139854c31aefc12e545476a4bbff8d4..cd64a99debfa113d692be44dccedf93794a27a07 100644
--- a/drivers/staging/greybus/greybus_protocols.h
+++ b/drivers/staging/greybus/greybus_protocols.h
@@ -130,6 +130,7 @@ struct gb_protocol_version_response {
 #define GB_CONTROL_TYPE_BUNDLE_RESUME		0x10
 #define GB_CONTROL_TYPE_BUNDLE_DEACTIVATE	0x11
 #define GB_CONTROL_TYPE_BUNDLE_ACTIVATE		0x12
+#define GB_CONTROL_TYPE_INTF_SUSPEND_PREPARE		0x13
 
 struct gb_control_version_request {
 	__u8	major;
@@ -214,6 +215,20 @@ struct gb_control_bundle_pm_response {
 	__u8	status;
 } __packed;
 
+/*
+ * Interface Suspend Prepare and Deactivate Prepare operations use the same
+ * response layout and error codes. Define a single response structure and reuse
+ * it. Both operations have no payload.
+ */
+
+#define GB_CONTROL_INTF_PM_OK		0x00
+#define GB_CONTROL_INTF_PM_BUSY		0x01
+#define GB_CONTROL_INTF_PM_NA		0x02
+
+struct gb_control_intf_pm_response {
+	__u8	status;
+} __packed;
+
 /* APBridge protocol */
 
 /* request APB1 log */