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/* SPDX-License-Identifier: GPL-2.0 */
/*
* aspm.h
*
* PCI Express ASPM defines and function prototypes
*
* Copyright (C) 2007 Intel Corp.
* Zhang Yanmin (yanmin.zhang@intel.com)
* Shaohua Li (shaohua.li@intel.com)
*
* For more information, please consult the following manuals (look at
* http://www.pcisig.com/ for how to get them):
*
* PCI Express Specification
*/
#ifndef LINUX_ASPM_H
#define LINUX_ASPM_H
#include <linux/pci.h>
#define PCIE_LINK_STATE_L0S 1
#define PCIE_LINK_STATE_L1 2
#define PCIE_LINK_STATE_CLKPM 4
#ifdef CONFIG_PCIEASPM
int pci_disable_link_state(struct pci_dev *pdev, int state);
int pci_disable_link_state_locked(struct pci_dev *pdev, int state);
void pcie_no_aspm(void);
#else
static inline int pci_disable_link_state(struct pci_dev *pdev, int state)
{ return 0; }
static inline void pcie_no_aspm(void) { }
#endif
#endif /* LINUX_ASPM_H */
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