1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3  *	aspm.h
4  *
5  *	PCI Express ASPM defines and function prototypes
6  *
7  *	Copyright (C) 2007 Intel Corp.
8  *		Zhang Yanmin (yanmin.zhang@intel.com)
9  *		Shaohua Li (shaohua.li@intel.com)
10  *
11  *	For more information, please consult the following manuals (look at
12  *	http://www.pcisig.com/ for how to get them):
13  *
14  *	PCI Express Specification
15  */
16 
17 #ifndef LINUX_ASPM_H
18 #define LINUX_ASPM_H
19 
20 #include <linux/pci.h>
21 
22 #define PCIE_LINK_STATE_L0S	1
23 #define PCIE_LINK_STATE_L1	2
24 #define PCIE_LINK_STATE_CLKPM	4
25 
26 #ifdef CONFIG_PCIEASPM
27 void pci_disable_link_state(struct pci_dev *pdev, int state);
28 void pci_disable_link_state_locked(struct pci_dev *pdev, int state);
29 void pcie_no_aspm(void);
30 #else
pci_disable_link_state(struct pci_dev * pdev,int state)31 static inline void pci_disable_link_state(struct pci_dev *pdev, int state) { }
pcie_no_aspm(void)32 static inline void pcie_no_aspm(void) { }
33 #endif
34 
35 #endif /* LINUX_ASPM_H */
36