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nb/intel/gm45: Don't run graphics init on s3 resume 

This assumes ACPI aware OS also have a driver for this particular
hardware, which is the case for at least Linux. This saves ~60ms on S3
resume.

Change-Id: I2dcd399fee8e2d1cd1b70e60e1669a49c7aa8cb4
Signed-off-by: Arthur Heymans <arthur@aheymans.xyz>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35995
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
This commit is contained in:
Arthur Heymans 2019-10-12 17:39:31 +02:00
parent 9ed0df4c38
commit 29e53582cc
1 changed files with 1 additions and 1 deletions
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2
src/northbridge/intel/gm45/gma.c
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@ -205,7 +205,7 @@ static void gma_func0_init(struct device *dev)
/* Post VBIOS init */
gma_pm_init_post_vbios(dev, edid_lvds.ascii_string);
if (CONFIG(MAINBOARD_USE_LIBGFXINIT)) {
if (CONFIG(MAINBOARD_USE_LIBGFXINIT) && !acpi_is_wakeup_s3()) {
int vga_disable = (pci_read_config16(dev, D0F0_GGC) & 2) >> 1;
if (vga_disable) {
printk(BIOS_INFO,