diff --git a/Documentation/ABI/testing/sysfs-class-rc-redrat3 b/Documentation/ABI/testing/sysfs-class-rc-redrat3
new file mode 100644
index 0000000..33a24fa
--- /dev/null
+++ b/Documentation/ABI/testing/sysfs-class-rc-redrat3
@@ -0,0 +1,33 @@
+What:		/sys/class/rc/rcN/length_fuzz
+Date:		Jul 2016
+KernelVersion:	4.8
+Contact:	Mauro Carvalho Chehab <m.chehab@samsung.com>
+Description:
+		The redrat3 encodes an IR signal as set of different lengths
+		and a set of indices into those lengths. Writing this file
+		sets how much two lengths must differ before they are
+		considered distinct, the value is specified in microseconds.
+		Default 5, value 0 to 127.
+
+What:		/sys/class/rc/rcN/min_pause
+Date:		Jul 2016
+KernelVersion:	4.8
+Contact:	Mauro Carvalho Chehab <m.chehab@samsung.com>
+Description:
+		When receiving a continuous ir stream (for example when a user
+		is holding a button down on a remote), this specifies the
+		minimum size of a space when the redrat3 sends a irdata packet
+		to the host. Specified in miliseconds. Default value 18ms.
+		The value can be between 2 and 30 inclusive.
+
+What:		/sys/class/rc/rcN/periods_measure_carrier
+Date:		Jul 2016
+KernelVersion:	4.8
+Contact:	Mauro Carvalho Chehab <m.chehab@samsung.com>
+Description:
+		The carrier frequency is measured during the first pulse of
+		the IR signal. The larger the number of periods used To
+		measure, the more accurate the result is likely to be, however
+		some signals have short initial pulses, so in some case it
+		may be necessary for applications to reduce this value.
+		Default 8, value 1 to 255.
diff --git a/drivers/media/rc/redrat3.c b/drivers/media/rc/redrat3.c
index 399f44d..8365547 100644
--- a/drivers/media/rc/redrat3.c
+++ b/drivers/media/rc/redrat3.c
@@ -860,6 +860,195 @@ static void redrat3_led_complete(struct urb *urb)
 	atomic_dec(&rr3->flash);
 }
 
+static ssize_t min_pause_store(struct device *dev,
+				 struct device_attribute *attr,
+				 const char *buf, size_t len)
+{
+	struct rc_dev *rc_dev = to_rc_dev(dev);
+	struct redrat3_dev *rr3 = rc_dev->priv;
+	struct usb_device *udev = rr3->udev;
+	long value;
+	u8 *pause;
+	int rc;
+
+	rc = kstrtol(buf, 0, &value);
+	if (rc)
+		return rc;
+
+	if (value < 2 || value > 30)
+		return -EINVAL;
+
+	pause = kmalloc(sizeof(*pause), GFP_KERNEL);
+	if (!pause)
+		return -ENOMEM;
+
+	*pause = (65536 - (value * 2000)) / 256;
+	rc = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), RR3_SET_IR_PARAM,
+		     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
+		     RR3_IR_IO_MIN_PAUSE, 0, pause, sizeof(*pause), HZ * 25);
+	dev_dbg(dev, "set ir parm min pause %d rc 0x%02x\n", *pause, rc);
+	if (rc == sizeof(*pause))
+		rc = len;
+
+	kfree(pause);
+
+	return rc;
+}
+
+static ssize_t min_pause_show(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct rc_dev *rc_dev = to_rc_dev(dev);
+	struct redrat3_dev *rr3 = rc_dev->priv;
+	struct usb_device *udev = rr3->udev;
+	int rc;
+	u8 *pause;
+
+	pause = kmalloc(sizeof(*pause), GFP_KERNEL);
+	if (!pause)
+		return -ENOMEM;
+
+	rc = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), RR3_GET_IR_PARAM,
+		     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
+		     RR3_IR_IO_MIN_PAUSE, 0, pause, sizeof(*pause), HZ * 25);
+	dev_dbg(dev, "get ir parm len pause %d rc 0x%02x\n", *pause, rc);
+	if (rc == sizeof(*pause))
+		rc = sprintf(buf, "%d\n", (65536 - 256 * *pause) / 2000);
+
+	kfree(pause);
+
+	return rc;
+}
+
+static ssize_t length_fuzz_store(struct device *dev,
+				 struct device_attribute *attr,
+				 const char *buf, size_t len)
+{
+	struct rc_dev *rc_dev = to_rc_dev(dev);
+	struct redrat3_dev *rr3 = rc_dev->priv;
+	struct usb_device *udev = rr3->udev;
+	long value;
+	u8 *fuzz;
+	int rc;
+
+	rc = kstrtol(buf, 0, &value);
+	if (rc)
+		return rc;
+
+	if (value < 0 || value > 127)
+		return -EINVAL;
+
+	fuzz = kmalloc(sizeof(*fuzz), GFP_KERNEL);
+	if (!fuzz)
+		return -ENOMEM;
+
+	*fuzz = value * 2;
+	rc = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), RR3_SET_IR_PARAM,
+		     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
+		     RR3_IR_IO_LENGTH_FUZZ, 0, fuzz, sizeof(*fuzz), HZ * 25);
+	dev_dbg(dev, "set ir parm len fuzz %d rc 0x%02x\n", *fuzz, rc);
+	if (rc == sizeof(*fuzz))
+		rc = len;
+
+	kfree(fuzz);
+
+	return rc;
+}
+
+static ssize_t length_fuzz_show(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct rc_dev *rc_dev = to_rc_dev(dev);
+	struct redrat3_dev *rr3 = rc_dev->priv;
+	struct usb_device *udev = rr3->udev;
+	int rc;
+	u8 *fuzz;
+
+	fuzz = kmalloc(sizeof(*fuzz), GFP_KERNEL);
+	if (!fuzz)
+		return -ENOMEM;
+
+	rc = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), RR3_GET_IR_PARAM,
+		     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
+		     RR3_IR_IO_LENGTH_FUZZ, 0, fuzz, sizeof(*fuzz), HZ * 25);
+	dev_dbg(dev, "get ir parm len fuzz %d rc 0x%02x\n", *fuzz, rc);
+	if (rc == sizeof(*fuzz))
+		rc = sprintf(buf, "%d\n", *fuzz / 2);
+
+	kfree(fuzz);
+
+	return rc;
+}
+
+static ssize_t periods_measure_carrier_store(struct device *dev,
+				 struct device_attribute *attr,
+				 const char *buf, size_t len)
+{
+	struct rc_dev *rc_dev = to_rc_dev(dev);
+	struct redrat3_dev *rr3 = rc_dev->priv;
+	struct usb_device *udev = rr3->udev;
+	long value;
+	u8 *periods;
+	int rc;
+
+	rc = kstrtol(buf, 0, &value);
+	if (rc)
+		return rc;
+
+	if (value < 1 || value > 255)
+		return -EINVAL;
+
+	periods = kmalloc(sizeof(*periods), GFP_KERNEL);
+	if (!periods)
+		return -ENOMEM;
+
+	*periods = value;
+	rc = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), RR3_SET_IR_PARAM,
+			     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_OUT,
+			     RR3_IR_IO_LENGTH_FUZZ, 0, periods,
+			     sizeof(*periods), HZ * 25);
+	dev_dbg(dev, "set ir parm periods to measure carrier %d rc 0x%02x\n",
+								*periods, rc);
+	if (rc == sizeof(*periods))
+		rc = len;
+
+	kfree(periods);
+
+	return rc;
+}
+
+static ssize_t periods_measure_carrier_show(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct rc_dev *rc_dev = to_rc_dev(dev);
+	struct redrat3_dev *rr3 = rc_dev->priv;
+	struct usb_device *udev = rr3->udev;
+	u8 *periods;
+	int rc;
+
+	periods = kmalloc(sizeof(*periods), GFP_KERNEL);
+	if (!periods)
+		return -ENOMEM;
+
+	rc = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0), RR3_GET_IR_PARAM,
+			     USB_TYPE_VENDOR | USB_RECIP_DEVICE | USB_DIR_IN,
+			     RR3_IR_IO_LENGTH_FUZZ, 0, periods,
+			     sizeof(*periods), HZ * 25);
+	dev_dbg(dev, "get ir parm periods to measure carrier %d rc 0x%02x\n",
+								*periods, rc);
+	if (rc == sizeof(*periods))
+		rc = sprintf(buf, "%d\n", *periods);
+
+	kfree(periods);
+
+	return rc;
+}
+
+static struct device_attribute redrat3_attrs[] = {
+	__ATTR_RW(length_fuzz), __ATTR_RW(min_pause),
+	__ATTR_RW(periods_measure_carrier)
+};
+
 static struct rc_dev *redrat3_init_rc_dev(struct redrat3_dev *rr3)
 {
 	struct device *dev = rr3->dev;
@@ -1036,6 +1225,13 @@ static int redrat3_dev_probe(struct usb_interface *intf,
 		retval = -ENOMEM;
 		goto led_free_error;
 	}
+	for (i = 0; i < ARRAY_SIZE(redrat3_attrs); i++) {
+		retval = device_create_file(&rr3->rc->dev, &redrat3_attrs[i]);
+		if (retval) {
+			rc_unregister_device(rr3->rc);
+			goto led_free_error;
+		}
+	}
 
 	/* we can register the device now, as it is ready */
 	usb_set_intfdata(intf, rr3);
@@ -1057,10 +1253,14 @@ static void redrat3_dev_disconnect(struct usb_interface *intf)
 {
 	struct usb_device *udev = interface_to_usbdev(intf);
 	struct redrat3_dev *rr3 = usb_get_intfdata(intf);
+	int i;
 
 	if (!rr3)
 		return;
 
+	for (i = 0; i < ARRAY_SIZE(redrat3_attrs); i++)
+		device_remove_file(&rr3->rc->dev, &redrat3_attrs[i]);
+
 	usb_set_intfdata(intf, NULL);
 	rc_unregister_device(rr3->rc);
 	led_classdev_unregister(&rr3->led);
