diff --git a/drivers/staging/greybus/Documentation/sysfs-bus-greybus b/drivers/staging/greybus/Documentation/sysfs-bus-greybus
index 721010e22b25..62d03afe9c85 100644
--- a/drivers/staging/greybus/Documentation/sysfs-bus-greybus
+++ b/drivers/staging/greybus/Documentation/sysfs-bus-greybus
@@ -97,6 +97,23 @@ Contact:	Greg Kroah-Hartman <greg@kroah.com>
 Description:
 		Power measurement of the interface in microwatts (uW)
 
+What:		/sys/bus/greybus/devices/N-M.I/power_state
+Date:		March 2016
+KernelVersion:	4.XX
+Contact:	Greg Kroah-Hartman <greg@kroah.com>
+Description:
+		This reflects the power state of a Greybus Interface. If the
+		value read from it is "on", then power is currently supplied to
+		the Interface. Otherwise this will read "off" and the power is
+		currently not supplied to the Interface.
+
+		If the value read is "off", then writing "on" (or '1', 'y',
+		'Y') to it will enable power to the Interface. If the value
+		read is "on", then writing "off" (or '0', 'n', 'N') to it will
+		disable power to the Interface.
+
+		Writing the currently read value to it has no effect.
+
 What:		/sys/bus/greybus/devices/N-M.I/product_id
 Date:		October 2015
 KernelVersion:	4.XX
diff --git a/drivers/staging/greybus/interface.c b/drivers/staging/greybus/interface.c
index 3ad1c757d7e7..f5ed79c687d2 100644
--- a/drivers/staging/greybus/interface.c
+++ b/drivers/staging/greybus/interface.c
@@ -501,6 +501,63 @@ static ssize_t power_now_show(struct device *dev,
 }
 static DEVICE_ATTR_RO(power_now);
 
+static ssize_t power_state_show(struct device *dev,
+				struct device_attribute *attr, char *buf)
+{
+	struct gb_interface *intf = to_gb_interface(dev);
+
+	if (intf->active)
+		return scnprintf(buf, PAGE_SIZE, "on\n");
+	else
+		return scnprintf(buf, PAGE_SIZE, "off\n");
+}
+
+static ssize_t power_state_store(struct device *dev,
+				 struct device_attribute *attr, const char *buf,
+				 size_t len)
+{
+	struct gb_interface *intf = to_gb_interface(dev);
+	bool activate;
+	int ret = 0;
+
+	if (kstrtobool(buf, &activate))
+		return -EINVAL;
+
+	mutex_lock(&intf->mutex);
+
+	if (activate == intf->active)
+		goto unlock;
+
+	if (activate) {
+		ret = gb_interface_activate(intf);
+		if (ret) {
+			dev_err(&intf->dev,
+				"failed to activate interface: %d\n", ret);
+			goto unlock;
+		}
+
+		ret = gb_interface_enable(intf);
+		if (ret) {
+			dev_err(&intf->dev,
+				"failed to enable interface: %d\n", ret);
+			gb_interface_deactivate(intf);
+			goto unlock;
+		}
+	} else {
+		gb_interface_disable(intf);
+		gb_interface_deactivate(intf);
+	}
+
+unlock:
+	mutex_unlock(&intf->mutex);
+
+	if (ret)
+		return ret;
+
+	return len;
+}
+static DEVICE_ATTR_RW(power_state);
+
 static const char *gb_interface_type_string(struct gb_interface *intf)
 {
 	static const char * const types[] = {
@@ -541,6 +598,7 @@ static struct attribute *interface_power_attrs[] = {
 	&dev_attr_voltage_now.attr,
 	&dev_attr_current_now.attr,
 	&dev_attr_power_now.attr,
+	&dev_attr_power_state.attr,
 	NULL
 };