From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 693A0C3F2CD for ; Tue, 3 Mar 2020 02:53:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3ECA72166E for ; Tue, 3 Mar 2020 02:53:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583203985; bh=xrSwneQSyxbFcrpnGduhSn7IJJUdsBkAyHBLcwBerkc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=jR24xoZqKRJyrawMg6Jkt6eadWQ+/euJj6mvfNvJ2Sh2bmmKtyw9ZYAhumzcOaj6i aSt1FoxYi+f/IsIDPlWshrNWTSQqvDzUsNFjKXLTP7lTgGovsfyJWe26BExwUISlUf BUEkOtC28XMGvtAubNcdxmBAmm6piTaeum5vUAo8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726947AbgCCCxE (ORCPT ); Mon, 2 Mar 2020 21:53:04 -0500 Received: from mail.kernel.org ([198.145.29.99]:46274 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728968AbgCCCtt (ORCPT ); Mon, 2 Mar 2020 21:49:49 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 8A8FD24680; Tue, 3 Mar 2020 02:49:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1583203788; bh=xrSwneQSyxbFcrpnGduhSn7IJJUdsBkAyHBLcwBerkc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=E6pivyNMi54ql+3wdJ95o6iZeZu317Hl3v6BFLrv/Pbh1jaZX0fT1qp9WBWN202Lw oeeOf4nLEp2pqWb0C7E8ORpq7yV8JvggsL/xakC3s/qEABdVHAYQ1nCE6odA7YfuxM XmPTtVm0ZGbzKNiUbFh60UwsdsmNSIhfBoFUYznk= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Arun Parameswaran , Scott Branden , Andrew Lunn , Florian Fainelli , "David S . Miller" , Sasha Levin , netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH AUTOSEL 4.14 11/22] net: phy: restore mdio regs in the iproc mdio driver Date: Mon, 2 Mar 2020 21:49:22 -0500 Message-Id: <20200303024933.10371-11-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200303024933.10371-1-sashal@kernel.org> References: <20200303024933.10371-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Arun Parameswaran [ Upstream commit 6f08e98d62799e53c89dbf2c9a49d77e20ca648c ] The mii management register in iproc mdio block does not have a retention register so it is lost on suspend. Save and restore value of register while resuming from suspend. Fixes: bb1a619735b4 ("net: phy: Initialize mdio clock at probe function") Signed-off-by: Arun Parameswaran Signed-off-by: Scott Branden Reviewed-by: Andrew Lunn Reviewed-by: Florian Fainelli Signed-off-by: David S. Miller Signed-off-by: Sasha Levin --- drivers/net/phy/mdio-bcm-iproc.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/net/phy/mdio-bcm-iproc.c b/drivers/net/phy/mdio-bcm-iproc.c index 46fe1ae919a30..51ce3ea17fb37 100644 --- a/drivers/net/phy/mdio-bcm-iproc.c +++ b/drivers/net/phy/mdio-bcm-iproc.c @@ -188,6 +188,23 @@ static int iproc_mdio_remove(struct platform_device *pdev) return 0; } +#ifdef CONFIG_PM_SLEEP +int iproc_mdio_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct iproc_mdio_priv *priv = platform_get_drvdata(pdev); + + /* restore the mii clock configuration */ + iproc_mdio_config_clk(priv->base); + + return 0; +} + +static const struct dev_pm_ops iproc_mdio_pm_ops = { + .resume = iproc_mdio_resume +}; +#endif /* CONFIG_PM_SLEEP */ + static const struct of_device_id iproc_mdio_of_match[] = { { .compatible = "brcm,iproc-mdio", }, { /* sentinel */ }, @@ -198,6 +215,9 @@ static struct platform_driver iproc_mdio_driver = { .driver = { .name = "iproc-mdio", .of_match_table = iproc_mdio_of_match, +#ifdef CONFIG_PM_SLEEP + .pm = &iproc_mdio_pm_ops, +#endif }, .probe = iproc_mdio_probe, .remove = iproc_mdio_remove, -- 2.20.1