diff options
Diffstat (limited to 'src/mainboard/lenovo/t520')
| -rw-r--r-- | src/mainboard/lenovo/t520/smihandler.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/mainboard/lenovo/t520/smihandler.c b/src/mainboard/lenovo/t520/smihandler.c index f4ed367d8a..c81825e798 100644 --- a/src/mainboard/lenovo/t520/smihandler.c +++ b/src/mainboard/lenovo/t520/smihandler.c @@ -167,3 +167,23 @@ int mainboard_smi_apmc(u8 data) } return 0; } + +void mainboard_smi_sleep(u8 slp_typ) +{ + if (slp_typ == 3) { + u8 ec_wake = ec_read(0x32); + /* If EC wake events are enabled, enable wake on EC WAKE GPE. */ + if (ec_wake & 0x14) { + u32 gpe_rout; + u16 pmbase = pci_read_config16(PCI_DEV(0, 0x1f, 0), 0x40) & 0xfffc; + + /* Enable EC WAKE GPE. */ + outl(inl(pmbase + GPE0_EN) | (1 << 29), pmbase + GPE0_EN); + gpe_rout = pci_read_config32(PCI_DEV(0, 0x1f, 0), GPIO_ROUT); + /* Redirect EC WAKE GPE to SCI. */ + gpe_rout &= ~(3 << 26); + gpe_rout |= (2 << 26); + pci_write_config32(PCI_DEV(0, 0x1f, 0), GPIO_ROUT, gpe_rout); + } + } +} |