/* SPDX-License-Identifier: GPL-2.0-or-later */ #include #include #include #include #include #include "i82371eb.h" void enable_pm(void) { u8 reg8; u16 reg16; /* Get the SMBus/PM device of the 82371AB/EB/MB. */ const pci_devfn_t dev = pci_locate_device(PCI_ID(PCI_VID_INTEL, PCI_DID_INTEL_82371AB_SMB_ACPI), 0); /* Set the PM I/O base. */ pci_write_config32(dev, PMBA, DEFAULT_PMBASE | 1); /* Enable access to the PM I/O space. */ reg16 = pci_read_config16(dev, PCI_COMMAND); reg16 |= PCI_COMMAND_IO; pci_write_config16(dev, PCI_COMMAND, reg16); /* PM I/O Space Enable (PMIOSE). */ reg8 = pci_read_config8(dev, PMREGMISC); reg8 |= PMIOSE; pci_write_config8(dev, PMREGMISC, reg8); }