soc/intel/jasperlake: Hook up GMA ACPI brightness controls
Add function needed to generate ACPI backlight control SSDT, along with
Kconfig values for accessing the registers.
Tested by adding gfx register on google/magpie. Backlight controls
work on Windows 10 and Linux 6.1.
Change-Id: Iaa9872cd590c3b1298667cc80354ed3efd91c6c8
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/74324
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Sean Rhodes <sean@starlabs.systems>
diff --git a/src/soc/intel/jasperlake/Kconfig b/src/soc/intel/jasperlake/Kconfig
index 338c467..660b24a 100644
--- a/src/soc/intel/jasperlake/Kconfig
+++ b/src/soc/intel/jasperlake/Kconfig
@@ -219,4 +219,16 @@
config PRERAM_CBMEM_CONSOLE_SIZE
hex
default 0x1400
+
+config INTEL_GMA_BCLV_OFFSET
+ default 0xc8258
+
+config INTEL_GMA_BCLV_WIDTH
+ default 32
+
+config INTEL_GMA_BCLM_OFFSET
+ default 0xc8254
+
+config INTEL_GMA_BCLM_WIDTH
+ default 32
endif
diff --git a/src/soc/intel/jasperlake/Makefile.inc b/src/soc/intel/jasperlake/Makefile.inc
index bd8dcd8..31ea865 100644
--- a/src/soc/intel/jasperlake/Makefile.inc
+++ b/src/soc/intel/jasperlake/Makefile.inc
@@ -32,6 +32,7 @@
ramstage-y += finalize.c
ramstage-y += fsp_params.c
ramstage-y += gpio.c
+ramstage-y += graphics.c
ramstage-y += lockdown.c
ramstage-y += p2sb.c
ramstage-y += pmc.c
diff --git a/src/soc/intel/jasperlake/chip.h b/src/soc/intel/jasperlake/chip.h
index 2839148..3e47e00 100644
--- a/src/soc/intel/jasperlake/chip.h
+++ b/src/soc/intel/jasperlake/chip.h
@@ -5,6 +5,7 @@
#include <drivers/i2c/designware/dw_i2c.h>
#include <gpio.h>
+#include <drivers/intel/gma/gma.h>
#include <intelblocks/cfg.h>
#include <intelblocks/gspi.h>
#include <intelblocks/pcie_rp.h>
@@ -431,6 +432,9 @@
* false: Disabled (more wakes, higher power)
*/
bool cnvi_reduce_s0ix_pwr_usage;
+
+ /* i915 struct for GMA backlight control */
+ struct i915_gpu_controller_info gfx;
};
typedef struct soc_intel_jasperlake_config config_t;
diff --git a/src/soc/intel/jasperlake/graphics.c b/src/soc/intel/jasperlake/graphics.c
new file mode 100644
index 0000000..773f3c6
--- /dev/null
+++ b/src/soc/intel/jasperlake/graphics.c
@@ -0,0 +1,11 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+
+#include <intelblocks/graphics.h>
+#include <soc/ramstage.h>
+
+const struct i915_gpu_controller_info *
+intel_igd_get_controller_info(const struct device *const dev)
+{
+ const struct soc_intel_jasperlake_config *const chip = dev->chip_info;
+ return &chip->gfx;
+}