pci_set_power_state

Langue: en

Autres versions - même langue

Version: October 2010 (fedora - 01/12/10)

Section: 9 (Appels noyau Linux)

Sommaire

NAME

pci_set_power_state - Set the power state of a PCI device

SYNOPSIS

int pci_set_power_state(struct pci_dev * dev, pci_power_t state);

ARGUMENTS

dev

PCI device to handle.

state

PCI power state (D0, D1, D2, D3hot) to put the device into.

DESCRIPTION

Transition a device to a new power state, using the platform firmware and/or the device's PCI PM registers.

RETURN VALUE

-EINVAL if the requested state is invalid. -EIO if device does not support PCI PM or its PM capabilities register has a wrong version, or device doesn't support the requested state. 0 if device already is in the requested state. 0 if device's power state has been successfully changed.