1 /* SPDX-License-Identifier: GPL-2.0-only */
2
3 #include <device/pci_ops.h>
4 #include <southbridge/intel/bd82x6x/pch.h>
5 #include <drivers/lenovo/hybrid_graphics/hybrid_graphics.h>
6 #include <northbridge/intel/sandybridge/sandybridge.h>
7
hybrid_graphics_init(void)8 static void hybrid_graphics_init(void)
9 {
10 bool peg, igd;
11 u32 reg32;
12
13 early_hybrid_graphics(&igd, &peg);
14
15 if (peg && igd)
16 return;
17
18 /* Hide disabled devices */
19 reg32 = pci_read_config32(PCI_DEV(0, 0, 0), DEVEN);
20 reg32 &= ~(DEVEN_PEG10 | DEVEN_IGD);
21
22 if (peg)
23 reg32 |= DEVEN_PEG10;
24
25 if (igd)
26 reg32 |= DEVEN_IGD;
27 else
28 /* Disable IGD VGA decode, no GTT or GFX stolen */
29 pci_write_config16(PCI_DEV(0, 0, 0), GGC, 2);
30
31 pci_write_config32(PCI_DEV(0, 0, 0), DEVEN, reg32);
32 }
33
mainboard_early_init(int s3resume)34 void mainboard_early_init(int s3resume)
35 {
36 hybrid_graphics_init();
37 }
38