[coreboot-gerrit] Change in coreboot[master]: soc/intel/skylake: Hook up GMA ACPI brightness controls

[Matt DeVillier (Code Review)]

Matt DeVillier has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/39883 )

Change subject: soc/intel/skylake: Hook up GMA ACPI brightness controls
......................................................................

soc/intel/skylake: 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 implementation
by implementing intel_igd_get_controller_info().

Change-Id: I70e280e54d78e69a335f9a382261193c593ce430
Signed-off-by: Matt DeVillier 
---
M src/soc/intel/skylake/chip.h
M src/soc/intel/skylake/graphics.c
2 files changed, 15 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/83/39883/1

diff --git a/src/soc/intel/skylake/chip.h b/src/soc/intel/skylake/chip.h
index 178ab03..1170b57 100644
--- a/src/soc/intel/skylake/chip.h
+++ b/src/soc/intel/skylake/chip.h
@@ -19,6 +19,7 @@
 #include <arch/acpi_device.h>
 #include <device/i2c_simple.h>
 #include <drivers/i2c/designware/dw_i2c.h>
+#include <drivers/intel/gma/i915.h>
 #include <intelblocks/cfg.h>
 #include <intelblocks/gspi.h>
 #include <intelblocks/lpc_lib.h>
@@ -583,6 +584,9 @@

/* Enable/Disable Sata test mode */
    u8 SataTestMode;
+
+	/* i915 struct for GMA backlight control */
+	struct i915_gpu_controller_info gfx;
 };

typedef struct soc_intel_skylake_config config_t;
diff --git a/src/soc/intel/skylake/graphics.c b/src/soc/intel/skylake/graphics.c
index daa6eaa..00681e5 100644
--- a/src/soc/intel/skylake/graphics.c
+++ b/src/soc/intel/skylake/graphics.c
@@ -19,6 +19,7 @@
 #include <device/pci.h>
 #include <device/pci_ops.h>
 #include <device/resource.h>
+#include <drivers/intel/gma/i915.h>
 #include <drivers/intel/gma/i915_reg.h>
 #include <drivers/intel/gma/libgfxinit.h>
 #include <intelblocks/graphics.h>
@@ -185,3 +186,13 @@
    printk(BIOS_DEBUG, "current = %lx\n", current);
    return current;
 }
+
+struct i915_gpu_controller_info *intel_igd_get_controller_info(void)
+{
+	struct device *dev = pcidev_on_root(SA_DEV_SLOT_IGD, 0);
+	if (!dev || !dev->enabled)
+		return NULL;
+
+	struct soc_intel_skylake_config *chip = dev->chip_info;
+	return &chip->gfx;
+}