pci_target_state(9) centos man page | unix.com

PCI_TARGET_STATE(9)						Hardware Interfaces					       PCI_TARGET_STATE(9)

NAME
       pci_target_state - find an appropriate low power state for a given PCI dev

SYNOPSIS
       pci_power_t pci_target_state(struct pci_dev * dev);

ARGUMENTS
       dev
	   PCI device

DESCRIPTION
       Use underlying platform code to find a supported low power state for dev. If the platform can't manage dev, return the deepest state from
       which it can generate wake events, based on any available PME info.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						       PCI_TARGET_STATE(9)