UBUNTU: SAUCE (no-up) Provide a param for allowing the BIOS to handle changing the brightness on AC/battery status changes.
We currently carry a SAUCE patch which lets the OS handle the brightness
levels automatically when connecting/disconnecting AC. There are some
laptops (MSI Wind) for which this doesn't work. Provide a driver param
which allows this behaviour to be overriden.
+ * The Default is to let the OS handle brightness autoswitching due to
+ * AC/battery status changes. On some laptops (MSI Wind) this doesn't
+ * work so we need a workaround.
+static int brightness_autoswitch_via_bios = 0;
+module_param(brightness_autoswitch_via_bios, bool, 0644);
* By default, we don't allow duplicate ACPI video bus devices
* under the same VGA controller
@@ -1421,7 +1429,7 @@ static int acpi_video_bus_put_devices(struct acpi_video_bus *video)