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-rw-r--r--resources/libreboot/patch/0009-lenovo-t60-Enable-brightness-controls-native-graphic.patch37
1 files changed, 37 insertions, 0 deletions
diff --git a/resources/libreboot/patch/0009-lenovo-t60-Enable-brightness-controls-native-graphic.patch b/resources/libreboot/patch/0009-lenovo-t60-Enable-brightness-controls-native-graphic.patch
new file mode 100644
index 0000000..7e381e2
--- /dev/null
+++ b/resources/libreboot/patch/0009-lenovo-t60-Enable-brightness-controls-native-graphic.patch
@@ -0,0 +1,37 @@
+From e226918085e01a51916357b4c8d667e31e040fe4 Mon Sep 17 00:00:00 2001
+From: Francis Rowe <info@gluglug.org.uk>
+Date: Mon, 15 Jun 2015 19:59:46 +0100
+Subject: [PATCH 09/17] lenovo/t60: 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: I22e261f2ce28ec81cd208a73e6311ec67146eb72
+Signed-off-by: Francis Rowe <info@gluglug.org.uk>
+---
+ src/mainboard/lenovo/t60/devicetree.cb | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/mainboard/lenovo/t60/devicetree.cb b/src/mainboard/lenovo/t60/devicetree.cb
+index fdced26..5f90a73 100644
+--- a/src/mainboard/lenovo/t60/devicetree.cb
++++ b/src/mainboard/lenovo/t60/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" = "1"
+- register "gpu_backlight" = "0x1280128"
++ register "gpu_backlight" = "0x58BF58BE"
+
+ device cpu_cluster 0 on
+ chip cpu/intel/socket_mFCPGA478
+--
+1.9.1
+