1*4440bf5fSYao Zi // SPDX-License-Identifier: GPL-2.0-only 2*4440bf5fSYao Zi /* 3*4440bf5fSYao Zi * PCI bus helpers for STMMAC driver 4*4440bf5fSYao Zi * Copyright (C) 2025 Yao Zi <ziyao@disroot.org> 5*4440bf5fSYao Zi */ 6*4440bf5fSYao Zi 7*4440bf5fSYao Zi #include <linux/device.h> 8*4440bf5fSYao Zi #include <linux/pci.h> 9*4440bf5fSYao Zi 10*4440bf5fSYao Zi #include "stmmac_libpci.h" 11*4440bf5fSYao Zi 12*4440bf5fSYao Zi int stmmac_pci_plat_suspend(struct device *dev, void *bsp_priv) 13*4440bf5fSYao Zi { 14*4440bf5fSYao Zi struct pci_dev *pdev = to_pci_dev(dev); 15*4440bf5fSYao Zi int ret; 16*4440bf5fSYao Zi 17*4440bf5fSYao Zi ret = pci_save_state(pdev); 18*4440bf5fSYao Zi if (ret) 19*4440bf5fSYao Zi return ret; 20*4440bf5fSYao Zi 21*4440bf5fSYao Zi pci_disable_device(pdev); 22*4440bf5fSYao Zi pci_wake_from_d3(pdev, true); 23*4440bf5fSYao Zi 24*4440bf5fSYao Zi return 0; 25*4440bf5fSYao Zi } 26*4440bf5fSYao Zi EXPORT_SYMBOL_GPL(stmmac_pci_plat_suspend); 27*4440bf5fSYao Zi 28*4440bf5fSYao Zi int stmmac_pci_plat_resume(struct device *dev, void *bsp_priv) 29*4440bf5fSYao Zi { 30*4440bf5fSYao Zi struct pci_dev *pdev = to_pci_dev(dev); 31*4440bf5fSYao Zi int ret; 32*4440bf5fSYao Zi 33*4440bf5fSYao Zi pci_restore_state(pdev); 34*4440bf5fSYao Zi pci_set_power_state(pdev, PCI_D0); 35*4440bf5fSYao Zi 36*4440bf5fSYao Zi ret = pci_enable_device(pdev); 37*4440bf5fSYao Zi if (ret) 38*4440bf5fSYao Zi return ret; 39*4440bf5fSYao Zi 40*4440bf5fSYao Zi pci_set_master(pdev); 41*4440bf5fSYao Zi 42*4440bf5fSYao Zi return 0; 43*4440bf5fSYao Zi } 44*4440bf5fSYao Zi EXPORT_SYMBOL_GPL(stmmac_pci_plat_resume); 45*4440bf5fSYao Zi 46*4440bf5fSYao Zi MODULE_DESCRIPTION("STMMAC PCI helper library"); 47*4440bf5fSYao Zi MODULE_AUTHOR("Yao Zi <ziyao@disroot.org>"); 48*4440bf5fSYao Zi MODULE_LICENSE("GPL"); 49