soc/intel/common: Hook up GMA ACPI brightness controls

Add framework to hook up the generic src/drivers/intel/gma ACPI
backlight control for platforms using SOC_INTEL_COMMON_BLOCK_GRAPHICS.
Add a weak function to get the struct i915_gpu_controller_info needed
to generate the SSDT, defaulting to NULL, which SoC's will override.

Each SoC will need to override intel_igd_get_controller_info, and
individual boards will need to populate the struct in order for
the backlight control methods to be added to the SSDT.

Change-Id: I993770fdcd0a28cee756df2bd6a795498f175952
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/32549
Reviewed-by: Nico Huber <nico.h@gmx.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Matt DeVillier 2019-05-02 13:30:11 -07:00 committed by Nico Huber
parent 512b77abb5
commit 1eea1dd7d7
2 changed files with 27 additions and 7 deletions

View File

@ -18,6 +18,7 @@
#include <device/mmio.h>
#include <device/pci.h>
#include <device/pci_ids.h>
#include <drivers/intel/gma/i915.h>
#include <intelblocks/graphics.h>
#include <soc/pci_devs.h>
@ -32,6 +33,20 @@ __weak void graphics_soc_init(struct device *dev)
pci_dev_init(dev);
}
__weak const struct i915_gpu_controller_info *
intel_igd_get_controller_info(struct device *device)
{
return NULL;
}
static void gma_generate_ssdt(struct device *device)
{
const struct i915_gpu_controller_info *gfx = intel_igd_get_controller_info(device);
if (gfx)
drivers_intel_gma_displays_ssdt_generate(gfx);
}
static int is_graphics_disabled(struct device *dev)
{
/* Check if Graphics PCI device is disabled */
@ -111,15 +126,16 @@ void graphics_gtt_rmw(unsigned long reg, uint32_t andmask, uint32_t ormask)
}
static const struct device_operations graphics_ops = {
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = graphics_soc_init,
.ops_pci = &pci_dev_ops_pci,
.read_resources = pci_dev_read_resources,
.set_resources = pci_dev_set_resources,
.enable_resources = pci_dev_enable_resources,
.init = graphics_soc_init,
.ops_pci = &pci_dev_ops_pci,
#if CONFIG(HAVE_ACPI_TABLES)
.write_acpi_tables = graphics_soc_write_acpi_opregion,
.write_acpi_tables = graphics_soc_write_acpi_opregion,
.acpi_fill_ssdt_generator = gma_generate_ssdt,
#endif
.scan_bus = scan_generic_bus,
.scan_bus = scan_generic_bus,
};
static const unsigned short pci_device_ids[] = {

View File

@ -44,6 +44,10 @@ void graphics_soc_init(struct device *dev);
uintptr_t graphics_soc_write_acpi_opregion(struct device *device,
uintptr_t current, struct acpi_rsdp *rsdp);
/* i915 controller info for ACPI backlight controls */
const struct i915_gpu_controller_info *
intel_igd_get_controller_info(struct device *device);
/* Graphics MMIO register read/write APIs */
uint32_t graphics_gtt_read(unsigned long reg);
void graphics_gtt_write(unsigned long reg, uint32_t data);