soc/intel/apollolake: Hook up GMA ACPI brightness controls
Add struct i915_gpu_controller_info for boards to supply info needed
to generate ACPI backlight control SSDT.
Hook into soc/common framework by implementing intel_igd_get_controller_info().
Add Kconfig entries to set the correct register offsets for backlight
frequency and duty cycle.
Change-Id: Ia62a88b58e7efd90f550000fc5b2cef0cb5fade7
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40593
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
Reviewed-by: Nico Huber <nico.h@gmx.de>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/soc/intel/apollolake/Kconfig b/src/soc/intel/apollolake/Kconfig
index 4f762a9..62049b5 100644
--- a/src/soc/intel/apollolake/Kconfig
+++ b/src/soc/intel/apollolake/Kconfig
@@ -413,4 +413,22 @@
string
default "pdpt pt"
+config INTEL_GMA_PANEL_2
+ bool
+ default n
+
+config INTEL_GMA_BCLV_OFFSET
+ default 0xc8358 if INTEL_GMA_PANEL_2
+ default 0xc8258
+
+config INTEL_GMA_BCLV_WIDTH
+ default 32
+
+config INTEL_GMA_BCLM_OFFSET
+ default 0xc8354 if INTEL_GMA_PANEL_2
+ default 0xc8254
+
+config INTEL_GMA_BCLM_WIDTH
+ default 32
+
endif