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| author | Matt DeVillier <matt.devillier@gmail.com> | 2018-01-28 18:42:10 -0600 |
|---|---|---|
| committer | Matt DeVillier <matt.devillier@gmail.com> | 2020-04-02 20:45:11 +0000 |
| commit | c72f5f74a890ddd20e7849fce7d693a1fdd6da66 (patch) | |
| tree | 1f0781fc9c8516d8676a2cc6482b75b2568ddb5b /src/soc | |
| parent | a372f8ae866be5a54f73178a5a1a87daeda378af (diff) | |
| download | coreboot-c72f5f74a890ddd20e7849fce7d693a1fdd6da66.tar.xz | |
soc/intel/baytrail: add ACPI backlight support
Add hook to generate ACPI methods in SSDT for screen backlight control.
To make use of this, individual boards will need to
include default_brightness_levels.asl in their dsdt, as
well as add 'register "gfx" = "GMA_STATIC_DISPLAYS(0)"' to
their devicetree.
Change-Id: I0b7fc45bda3aaf89306bedb579fb1e9f8ce07926
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/39942
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Diffstat (limited to 'src/soc')
| -rw-r--r-- | src/soc/intel/baytrail/chip.h | 3 | ||||
| -rw-r--r-- | src/soc/intel/baytrail/gfx.c | 8 |
2 files changed, 11 insertions, 0 deletions
diff --git a/src/soc/intel/baytrail/chip.h b/src/soc/intel/baytrail/chip.h index 0fa7eafe87..52b1e33851 100644 --- a/src/soc/intel/baytrail/chip.h +++ b/src/soc/intel/baytrail/chip.h @@ -18,6 +18,7 @@ #ifndef _BAYTRAIL_CHIP_H_ #define _BAYTRAIL_CHIP_H_ +#include <drivers/intel/gma/i915.h> #include <stdint.h> struct soc_intel_baytrail_config { @@ -84,6 +85,8 @@ struct soc_intel_baytrail_config { uint16_t gpu_pipeb_power_cycle_delay; int gpu_pipeb_pwm_freq_hz; int disable_ddr_2x_refresh_rate; + + struct i915_gpu_controller_info gfx; }; #endif /* _BAYTRAIL_CHIP_H_ */ diff --git a/src/soc/intel/baytrail/gfx.c b/src/soc/intel/baytrail/gfx.c index 417f36e907..e4ed6f37d5 100644 --- a/src/soc/intel/baytrail/gfx.c +++ b/src/soc/intel/baytrail/gfx.c @@ -397,6 +397,13 @@ static void gfx_init(struct device *dev) intel_gma_restore_opregion(); } +static void gma_generate_ssdt(struct device *dev) +{ + const struct soc_intel_baytrail_config *chip = dev->chip_info; + + drivers_intel_gma_displays_ssdt_generate(&chip->gfx); +} + static unsigned long gma_write_acpi_tables(struct device *const dev, unsigned long current, @@ -430,6 +437,7 @@ static struct device_operations gfx_device_ops = { .init = gfx_init, .ops_pci = &soc_pci_ops, .write_acpi_tables = gma_write_acpi_tables, + .acpi_fill_ssdt = gma_generate_ssdt, }; static const struct pci_driver gfx_driver __pci_driver = { |