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-rw-r--r--src/northbridge/intel/sandybridge/gma.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/northbridge/intel/sandybridge/gma.c b/src/northbridge/intel/sandybridge/gma.c
index d1779db8da..bf340e9f61 100644
--- a/src/northbridge/intel/sandybridge/gma.c
+++ b/src/northbridge/intel/sandybridge/gma.c
@@ -634,6 +634,19 @@ static void gma_ssdt(device_t device)
drivers_intel_gma_displays_ssdt_generate(gfx);
}
+/* called by pci set_vga_bridge function */
+static void gma_func0_disable(struct device *dev)
+{
+ u16 reg16;
+ device_t dev_host = dev_find_slot(0, PCI_DEVFN(0,0));
+
+ reg16 = pci_read_config16(dev_host, GGC);
+ reg16 |= (1 << 1); /* disable VGA decode */
+ pci_write_config16(dev_host, GGC, reg16);
+
+ dev->enabled = 0;
+}
+
static struct pci_operations gma_pci_ops = {
.set_subsystem = gma_set_subsystem,
};
@@ -646,6 +659,7 @@ static struct device_operations gma_func0_ops = {
.init = gma_func0_init,
.scan_bus = 0,
.enable = 0,
+ .disable = gma_func0_disable,
.ops_pci = &gma_pci_ops,
};