From nobody Tue Feb 10 19:16:38 2026 Received: from layka.disroot.org (layka.disroot.org [178.21.23.139]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B60FF320CD5; Tue, 11 Nov 2025 10:09:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=178.21.23.139 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762855784; cv=none; b=A3wbyCmjrYQqy55aB8lVeeKz6fYICcTS1/VFMg/kUbcT5jApa5KGWyzJstnI7UHGPPsPqMZKQM8OPatW4baawCGgky2kCBeMDIWcVluH012QmQljMmerS02MsBTAJ427E0HvRMDzUzTBxtZNucvqBAcwV2vVYAVzd/QR2ahtA0E= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762855784; c=relaxed/simple; bh=K8I2ed2sAJQRkbFMVe0WhFXDLLsmiiJi3ICw/89lxHE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=qGf/fZLbF3gyQxS+0GcwmAnPDT+D7ZmCaNqKcYOzn2oXK9uwOo0weJFUcGNEpBaw/3drwmZFaGiZhuSGbgFCPCr1TimOGWTAzksE1nOpZchrytOX2NvrMUnIVpiKpK8qKN3ozTSa5+p8pY9VrJ1H0T7gaLKFORlFB4kZ/xseZzY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=disroot.org; spf=pass smtp.mailfrom=disroot.org; dkim=pass (2048-bit key) header.d=disroot.org header.i=@disroot.org header.b=PaPwpcvc; arc=none smtp.client-ip=178.21.23.139 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=disroot.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=disroot.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=disroot.org header.i=@disroot.org header.b="PaPwpcvc" Received: from mail01.disroot.lan (localhost [127.0.0.1]) by disroot.org (Postfix) with ESMTP id DEB4922D5C; Tue, 11 Nov 2025 11:09:39 +0100 (CET) X-Virus-Scanned: SPAM Filter at disroot.org Received: from layka.disroot.org ([127.0.0.1]) by localhost (disroot.org [127.0.0.1]) (amavis, port 10024) with ESMTP id 4o2i52sTXEOt; Tue, 11 Nov 2025 11:09:39 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=disroot.org; s=mail; t=1762855779; bh=K8I2ed2sAJQRkbFMVe0WhFXDLLsmiiJi3ICw/89lxHE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=PaPwpcvc5iztxYWFUDUg4p4n4aE/2/3FAAFTtrqkOZXc1VrvW1RSFeeHhWjVaYfbi 3lttzcS7Kdt1eU7epRbsihFQwYI/qcKxXkD8m2yptAR9jrKQUhn6fwRnyuYIwIrt9t EdjnpTQY6/CUVFckZRY7R5d/7ll9Q8QXsl2vH8oPnvyO2zuxOkP7HSaBVGkqnBzNtg h2HNfS73zCVXDsf6wstxy1Rab/9qzYGbkcVBf/IHVrTrIw7Xf7dxTM1uBM39jzhgG6 gAIzPXlVfQfjc4ecTZ7ETZsMDjZboO4UmDO5ACeFtEyDw+ZV3BiVxGoYn0drhDQp00 KpscxAZ3GODnw== From: Yao Zi To: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Yanteng Si , Huacai Chen , "Russell King (Oracle)" , Philipp Stanner , Tiezhu Yang , Qunqin Zhao , Yao Zi , Vladimir Oltean , Furong Xu <0x1207@gmail.com>, Kunihiko Hayashi , Jacob Keller Cc: netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next v4 1/3] net: stmmac: Add generic suspend/resume helper for PCI-based controllers Date: Tue, 11 Nov 2025 10:07:26 +0000 Message-ID: <20251111100727.15560-3-ziyao@disroot.org> In-Reply-To: <20251111100727.15560-2-ziyao@disroot.org> References: <20251111100727.15560-2-ziyao@disroot.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Most glue driver for PCI-based DWMAC controllers utilize similar platform suspend/resume routines. Add a generic implementation to reduce duplicated code. Signed-off-by: Yao Zi Reviewed-by: Russell King (Oracle) Reviewed-by: Yanteng Si + */ + +#include +#include + +#include "stmmac_libpci.h" + +int stmmac_pci_plat_suspend(struct device *dev, void *bsp_priv) +{ + struct pci_dev *pdev =3D to_pci_dev(dev); + int ret; + + ret =3D 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 =3D to_pci_dev(dev); + int ret; + + pci_restore_state(pdev); + pci_set_power_state(pdev, PCI_D0); + + ret =3D 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 "); +MODULE_LICENSE("GPL"); diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_libpci.h b/drivers/= net/ethernet/stmicro/stmmac/stmmac_libpci.h new file mode 100644 index 000000000000..71553184f982 --- /dev/null +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_libpci.h @@ -0,0 +1,12 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * Copyright (C) 2025 Yao Zi + */ + +#ifndef __STMMAC_LIBPCI_H__ +#define __STMMAC_LIBPCI_H__ + +int stmmac_pci_plat_suspend(struct device *dev, void *bsp_priv); +int stmmac_pci_plat_resume(struct device *dev, void *bsp_priv); + +#endif /* __STMMAC_LIBPCI_H__ */ --=20 2.51.2