diff options
Diffstat (limited to 'src/mainboard/lenovo/t420s')
| -rw-r--r-- | src/mainboard/lenovo/t420s/devicetree.cb | 14 | ||||
| -rw-r--r-- | src/mainboard/lenovo/t420s/romstage.c | 32 |
2 files changed, 44 insertions, 2 deletions
diff --git a/src/mainboard/lenovo/t420s/devicetree.cb b/src/mainboard/lenovo/t420s/devicetree.cb index 3224322654..366d36fe75 100644 --- a/src/mainboard/lenovo/t420s/devicetree.cb +++ b/src/mainboard/lenovo/t420s/devicetree.cb @@ -154,6 +154,20 @@ chip northbridge/intel/sandybridge register "eventd_enable" = "0xff" register "evente_enable" = "0x0d" end + chip drivers/lenovo/hybrid_graphics + device pnp ff.f on end # dummy + + register "detect_gpio" = "21" + + register "has_panel_hybrid_gpio" = "1" + register "panel_hybrid_gpio" = "52" + register "panel_integrated_lvl" = "1" + + register "has_backlight_gpio" = "0" + register "has_dgpu_power_gpio" = "0" + + register "has_thinker1" = "1" + end end # LPC Controller device pci 1f.2 on subsystemid 0x17aa 0x21d2 diff --git a/src/mainboard/lenovo/t420s/romstage.c b/src/mainboard/lenovo/t420s/romstage.c index d7f1c23eff..ad49637e2c 100644 --- a/src/mainboard/lenovo/t420s/romstage.c +++ b/src/mainboard/lenovo/t420s/romstage.c @@ -17,10 +17,36 @@ #include <arch/byteorder.h> #include <arch/io.h> -#include <device/pci_def.h> #include <console/console.h> #include <northbridge/intel/sandybridge/raminit_native.h> #include <southbridge/intel/bd82x6x/pch.h> +#include <drivers/lenovo/hybrid_graphics/hybrid_graphics.h> +#include <northbridge/intel/sandybridge/sandybridge.h> +#include <device/device.h> +#include <device/pci.h> + +static void hybrid_graphics_init(void) +{ + bool peg, igd; + u32 reg32; + + early_hybrid_graphics(&igd, &peg); + + /* Hide disabled devices */ + reg32 = pci_read_config32(PCI_DEV(0, 0, 0), DEVEN); + reg32 &= ~(DEVEN_PEG10 | DEVEN_IGD); + + if (peg) + reg32 |= DEVEN_PEG10; + + if (igd) + reg32 |= DEVEN_IGD; + else + /* Disable IGD VGA decode, no GTT or GFX stolen */ + pci_write_config16(PCI_DEV(0, 0, 0), GGC, 2); + + pci_write_config32(PCI_DEV(0, 0, 0), DEVEN, reg32); +} void pch_enable_lpc(void) { @@ -65,7 +91,9 @@ void mainboard_get_spd(spd_raw_data *spd, bool id_only) { read_spd(&spd[2], 0x51, id_only); } -void mainboard_early_init(int s3resume) { +void mainboard_early_init(int s3resume) +{ + hybrid_graphics_init(); } void mainboard_config_superio(void) |