From 30b0666a7d2b0d8265433cb308ed1bbbabd10674 Mon Sep 17 00:00:00 2001
From: Francis Rowe <info@gluglug.org.uk>
Date: Sat, 11 Oct 2014 16:43:28 +0100
Subject: [PATCH 06/17] lenovo/x60: Enable brightness controls (native
 graphics)

This makes the Fn Home/End keys work for controlling the
brightness of the display. Value obtained by reading
BLC_PWM_CTL when running the VBIOS (option ROM).

On i945 legacy brightness control is enabled by a single
bit in BLC_PWM_CTL. It's bit 16 or bit 0 (the other one
reverses polarity). Set the bit to enable brightness
controls.

Change-Id: Id855c4e91fe71fb489739e62fbe99ca22841acd2
Signed-off-by: Francis Rowe <info@gluglug.org.uk>
---
 src/mainboard/lenovo/x60/devicetree.cb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mainboard/lenovo/x60/devicetree.cb b/src/mainboard/lenovo/x60/devicetree.cb
index a3d31a6..9c3c524 100644
--- a/src/mainboard/lenovo/x60/devicetree.cb
+++ b/src/mainboard/lenovo/x60/devicetree.cb
@@ -27,7 +27,7 @@ chip northbridge/intel/i945
 	register "gpu_hotplug" = "0x00000220"
 	register "gpu_lvds_use_spread_spectrum_clock" = "1"
 	register "gpu_lvds_is_dual_channel" = "0"
-	register "gpu_backlight" = "0x1280128"
+	register "gpu_backlight" = "0x879F879E"
 
 	device cpu_cluster 0 on
 		chip cpu/intel/socket_mFCPGA478
-- 
1.9.1

