diff options
Diffstat (limited to 'drivers/net/ethernet/stmicro/stmmac/stmmac_libpci.c')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/stmmac_libpci.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_libpci.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_libpci.c new file mode 100644 index 000000000000..5c5dd502f79a --- /dev/null +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_libpci.c @@ -0,0 +1,48 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * PCI bus helpers for STMMAC driver + * Copyright (C) 2025 Yao Zi <ziyao@disroot.org> + */ + +#include <linux/device.h> +#include <linux/pci.h> + +#include "stmmac_libpci.h" + +int stmmac_pci_plat_suspend(struct device *dev, void *bsp_priv) +{ + struct pci_dev *pdev = to_pci_dev(dev); + int ret; + + ret = pci_save_state(pdev); + if (ret) + return ret; + + pci_disable_device(pdev); + pci_wake_from_d3(pdev, true); + + return 0; +} +EXPORT_SYMBOL_GPL(stmmac_pci_plat_suspend); + +int stmmac_pci_plat_resume(struct device *dev, void *bsp_priv) +{ + struct pci_dev *pdev = to_pci_dev(dev); + int ret; + + pci_restore_state(pdev); + pci_set_power_state(pdev, PCI_D0); + + ret = pci_enable_device(pdev); + if (ret) + return ret; + + pci_set_master(pdev); + + return 0; +} +EXPORT_SYMBOL_GPL(stmmac_pci_plat_resume); + +MODULE_DESCRIPTION("STMMAC PCI helper library"); +MODULE_AUTHOR("Yao Zi <ziyao@disroot.org>"); +MODULE_LICENSE("GPL"); |