drivers/intel/gma: Move IGD OpRegion to CBMEM

It never was in GNVS, it never belonged among the ACPI tables. Having
it in CBMEM, makes it easy to look the location up on resume, and saves
us additional boilerplate.

TEST=Booted Linux on Lenovo/X201s, confirmed ASLS is set and
     intel_backlight + acpi_video synchronize, both before and
     after suspend.

Change-Id: I5fdd6634e4a671a85b1df8bc9815296ff42edf29
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/40724
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

1 files changed, 2 insertions, 16 deletions

diff --git a/src/soc/intel/cannonlake/graphics.c b/src/soc/intel/cannonlake/graphics.c
index 5f61db4ee2..1db46254c5 100644
--- a/src/soc/intel/cannonlake/graphics.c
+++ b/src/soc/intel/cannonlake/graphics.c
@@ -22,6 +22,8 @@ void graphics_soc_init(struct device *dev)
 {
 	uint32_t ddi_buf_ctl;
 
+	intel_gma_init_igd_opregion();
+
 	/*
 	 * Enable DDI-A (eDP) 4-lane operation if the link is not up yet.
 	 * This will allow the kernel to use 4-lane eDP links properly
@@ -59,19 +61,3 @@ void graphics_soc_init(struct device *dev)
 		pci_dev_init(dev);
 	}
 }
-
-uintptr_t graphics_soc_write_acpi_opregion(const struct device *device,
-		uintptr_t current, struct acpi_rsdp *rsdp)
-{
-	igd_opregion_t *opregion;
-
-	printk(BIOS_DEBUG, "ACPI:    * IGD OpRegion\n");
-	opregion = (igd_opregion_t *)current;
-
-	if (intel_gma_init_igd_opregion(opregion) != CB_SUCCESS)
-		return current;
-
-	current += sizeof(igd_opregion_t);
-
-	return acpi_align_current(current);
-}