diff --git a/Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus b/Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus
index 65e6e5dd67e..f9e2a61900e 100644
--- a/Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus
+++ b/Documentation/ABI/testing/sysfs-driver-hid-roccat-koneplus
@@ -104,9 +104,9 @@ What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-
 Date:		October 2010
 Contact:	Stefan Achatz <erazor_de@users.sourceforge.net>
 Description:	When written a calibration process for the tracking control unit
-		can be initiated/cancelled.
-		The data has to be 3 bytes long.
-		This file is writeonly.
+		can be initiated/cancelled. Also lets one read/write sensor
+		registers.
+		The data has to be 4 bytes long.
 Users:		http://roccat.sourceforge.net
 
 What:		/sys/bus/usb/devices/<busnum>-<devnum>:<config num>.<interface num>/<hid-bus>:<vendor-id>:<product-id>.<num>/koneplus/roccatkoneplus<minor>/tcu_image
diff --git a/drivers/hid/hid-roccat-koneplus.c b/drivers/hid/hid-roccat-koneplus.c
index f5602fec486..c47540a5d4f 100644
--- a/drivers/hid/hid-roccat-koneplus.c
+++ b/drivers/hid/hid-roccat-koneplus.c
@@ -222,6 +222,14 @@ static ssize_t koneplus_sysfs_write_tcu(struct file *fp,
 			sizeof(struct koneplus_tcu), KONEPLUS_COMMAND_TCU);
 }
 
+static ssize_t koneplus_sysfs_read_tcu(struct file *fp,
+		struct kobject *kobj, struct bin_attribute *attr, char *buf,
+		loff_t off, size_t count)
+{
+	return koneplus_sysfs_read(fp, kobj, buf, off, count,
+			sizeof(struct koneplus_tcu), KONEPLUS_COMMAND_TCU);
+}
+
 static ssize_t koneplus_sysfs_read_tcu_image(struct file *fp,
 		struct kobject *kobj, struct bin_attribute *attr, char *buf,
 		loff_t off, size_t count)
@@ -426,8 +434,9 @@ static struct bin_attribute koneplus_bin_attributes[] = {
 		.write = koneplus_sysfs_write_sensor
 	},
 	{
-		.attr = { .name = "tcu", .mode = 0220 },
+		.attr = { .name = "tcu", .mode = 0660 },
 		.size = sizeof(struct koneplus_tcu),
+		.read = koneplus_sysfs_read_tcu,
 		.write = koneplus_sysfs_write_tcu
 	},
 	{