diff --git a/debian/changelog b/debian/changelog
index f3c0464..a4c0162 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,9 @@
+applesmc-dkms (0.14.1ubuntu1) unstable; urgency=low
+
+  * Add light_scale file so we can scale the value of the light sensors
+
+ -- Alex Murray <murray.alex@gmail.com>  Sat, 10 Jan 2009 01:15:19 +1030
+
 applesmc-dkms (0.14.1) unstable; urgency=low
 
   * Add support for MacBook Air 2
diff --git a/usr/src/dkms_source_tree/applesmc.c b/usr/src/dkms_source_tree/applesmc.c
index acd818f..ab10783 100644
--- a/usr/src/dkms_source_tree/applesmc.c
+++ b/usr/src/dkms_source_tree/applesmc.c
@@ -191,6 +191,12 @@ static DEFINE_MUTEX(applesmc_lock);
  */
 static unsigned int key_at_index;
 
+/*
+ * Light scale value - light sensor value is multiplied by this before
+ * returning to userspace
+ */
+static u8 light_scale = 1;
+
 static struct workqueue_struct *applesmc_led_wq;
 
 /*
@@ -577,6 +583,7 @@ static ssize_t applesmc_light_show(struct device *dev,
 	int ret;
 	u8 left = 0, right = 0;
 	u8 buffer[10], query[6];
+	u16 scaled_value;
 
 	mutex_lock(&applesmc_lock);
 
@@ -590,11 +597,13 @@ static ssize_t applesmc_light_show(struct device *dev,
 	}
 
 	ret = applesmc_read_key(LIGHT_SENSOR_LEFT_KEY, buffer, data_length);
-	left = buffer[2];
+	scaled_value = (u16)buffer[2] * (u16)light_scale;
+	left = (scaled_value > 255 ? 255 : scaled_value);
 	if (ret)
 		goto out;
 	ret = applesmc_read_key(LIGHT_SENSOR_RIGHT_KEY, buffer, data_length);
-	right = buffer[2];
+	scaled_value = (u16)buffer[2] * (u16)light_scale;
+	right = (scaled_value > 255 ? 255 : scaled_value);
 
 out:
 	mutex_unlock(&applesmc_lock);
@@ -969,6 +978,24 @@ static ssize_t applesmc_key_at_index_store(struct device *dev,
 	return count;
 }
 
+static ssize_t applesmc_light_scale_show(struct device *dev,
+				struct device_attribute *attr, char *sysfsbuf)
+{
+	return snprintf(sysfsbuf, PAGE_SIZE, "%d\n", light_scale);
+}
+
+static ssize_t applesmc_light_scale_store(struct device *dev,
+	struct device_attribute *attr, const char *sysfsbuf, size_t count)
+{
+	mutex_lock(&applesmc_lock);
+
+	light_scale = simple_strtoul(sysfsbuf, NULL, 10);
+
+	mutex_unlock(&applesmc_lock);
+
+	return count;
+}
+
 static struct led_classdev applesmc_backlight = {
 	.name			= "smc::kbd_backlight",
 	.default_trigger	= "nand-disk",
@@ -1003,6 +1030,8 @@ static DEVICE_ATTR(key_at_index_data_length, 0444,
 				applesmc_key_at_index_data_length_show, NULL);
 static DEVICE_ATTR(key_at_index_data, 0444,
 				applesmc_key_at_index_read_show, NULL);
+static DEVICE_ATTR(light_scale, 0644,
+		applesmc_light_scale_show, applesmc_light_scale_store);
 
 static struct attribute *key_enumeration_attributes[] = {
 	&dev_attr_key_count.attr,
@@ -1011,6 +1040,7 @@ static struct attribute *key_enumeration_attributes[] = {
 	&dev_attr_key_at_index_type.attr,
 	&dev_attr_key_at_index_data_length.attr,
 	&dev_attr_key_at_index_data.attr,
+	&dev_attr_light_scale.attr,
 	NULL
 };