Change in coreboot[master]: mb/clevo/l140cu: add panel settings to the dt and hook up GMA ACPI

[Michael Niewöhner (Code Review)]

Michael Niewöhner has submitted this change. ( https://review.coreboot.org/c/coreboot/+/48750 )

Change subject: mb/clevo/l140cu: add panel settings to the dt and hook up GMA ACPI
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mb/clevo/l140cu: add panel settings to the dt and hook up GMA ACPI

Add the panel settings dumped from vendor firmware and hook up
drivers/intel/gma, which will be required for brightness control.

Keyboard brightness control still requires ACPI code. This will be done
in a separate change later.

Test: Panel gets enabled when the payload starts on Clevo L141CU.

Change-Id: I7977a2271da72c142b025b4631318d1a39adfb13
Signed-off-by: Michael Niewöhner 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/48750
Tested-by: build bot (Jenkins) 
Reviewed-by: Angel Pons 
---
M src/mainboard/clevo/cml-u/dsdt.asl
M src/mainboard/clevo/cml-u/variants/l140cu/devicetree.cb
2 files changed, 12 insertions(+), 1 deletion(-)

Approvals:
  build bot (Jenkins): Verified
  Angel Pons: Looks good to me, approved

diff --git a/src/mainboard/clevo/cml-u/dsdt.asl b/src/mainboard/clevo/cml-u/dsdt.asl
index 7555246..05e297b 100644
--- a/src/mainboard/clevo/cml-u/dsdt.asl
+++ b/src/mainboard/clevo/cml-u/dsdt.asl
@@ -18,6 +18,7 @@
    {
    	#include <soc/intel/common/block/acpi/acpi/northbridge.asl>
    	#include <soc/intel/cannonlake/acpi/southbridge.asl>
+		#include <drivers/intel/gma/acpi/default_brightness_levels.asl>
    }

#include <southbridge/intel/common/acpi/sleepstates.asl>
diff --git a/src/mainboard/clevo/cml-u/variants/l140cu/devicetree.cb b/src/mainboard/clevo/cml-u/variants/l140cu/devicetree.cb
index 3329f63..d9a642a 100644
--- a/src/mainboard/clevo/cml-u/variants/l140cu/devicetree.cb
+++ b/src/mainboard/clevo/cml-u/variants/l140cu/devicetree.cb
@@ -65,7 +65,17 @@
    device domain 0 on
    	subsystemid 0x1558 0x1401 inherit
    	device pci 00.0 on	end	# Host Bridge
-		device pci 02.0 on	end	# Integrated Graphics Device
+		device pci 02.0 on		# Integrated Graphics Device
+			register "gfx" = "GMA_DEFAULT_PANEL(0)"
+			register "panel_cfg" = "{
+				.up_delay_ms		=  200,
+				.down_delay_ms		=   50,
+				.cycle_delay_ms		=  500,
+				.backlight_pwm_hz	= 1000,
+				.backlight_on_delay_ms	=    1,
+				.backlight_off_delay_ms	=    1,
+			}"
+		end
    	device pci 04.0 on		# SA Thermal device
    		register "Device4Enable" = "1"
    	end