From patchwork Tue Oct 17 11:34:02 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yoshihiro Shimoda X-Patchwork-Id: 13425051 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8007741AAC for ; Tue, 17 Oct 2023 11:34:07 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=none Received: from relmlie5.idc.renesas.com (relmlor1.renesas.com [210.160.252.171]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 0F3A8EA; Tue, 17 Oct 2023 04:34:05 -0700 (PDT) X-IronPort-AV: E=Sophos;i="6.03,231,1694703600"; d="scan'208";a="179586178" Received: from unknown (HELO relmlir5.idc.renesas.com) ([10.200.68.151]) by relmlie5.idc.renesas.com with ESMTP; 17 Oct 2023 20:34:04 +0900 Received: from localhost.localdomain (unknown [10.166.15.32]) by relmlir5.idc.renesas.com (Postfix) with ESMTP id 3DE3C4003EA8; Tue, 17 Oct 2023 20:34:04 +0900 (JST) From: Yoshihiro Shimoda To: s.shtylyov@omp.ru, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Yoshihiro Shimoda Subject: [PATCH net-next v3 2/2] rswitch: Add PM ops Date: Tue, 17 Oct 2023 20:34:02 +0900 Message-Id: <20231017113402.849735-3-yoshihiro.shimoda.uh@renesas.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20231017113402.849735-1-yoshihiro.shimoda.uh@renesas.com> References: <20231017113402.849735-1-yoshihiro.shimoda.uh@renesas.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_HELO_NONE, SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org Add PM ops for Suspend to Idle. When the system suspended, the Ethernet Serdes's clock will be stopped. So, this driver needs to re-initialize the Ethernet Serdes by phy_init() in renesas_eth_sw_resume(). Otherwise, timeout happened in phy_power_on(). Signed-off-by: Yoshihiro Shimoda Reviewed-by: Simon Horman --- drivers/net/ethernet/renesas/rswitch.c | 43 ++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/drivers/net/ethernet/renesas/rswitch.c b/drivers/net/ethernet/renesas/rswitch.c index e5a41e7880d8..43a7795d6591 100644 --- a/drivers/net/ethernet/renesas/rswitch.c +++ b/drivers/net/ethernet/renesas/rswitch.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include #include @@ -1315,6 +1316,7 @@ static int rswitch_phy_device_init(struct rswitch_device *rdev) if (!phydev) goto out; __set_bit(rdev->etha->phy_interface, phydev->host_interfaces); + phydev->mac_managed_pm = true; phydev = of_phy_connect(rdev->ndev, phy, rswitch_adjust_link, 0, rdev->etha->phy_interface); @@ -1995,11 +1997,52 @@ static void renesas_eth_sw_remove(struct platform_device *pdev) platform_set_drvdata(pdev, NULL); } +static int renesas_eth_sw_suspend(struct device *dev) +{ + struct rswitch_private *priv = dev_get_drvdata(dev); + struct net_device *ndev; + unsigned int i; + + rswitch_for_each_enabled_port(priv, i) { + ndev = priv->rdev[i]->ndev; + if (netif_running(ndev)) { + netif_device_detach(ndev); + rswitch_stop(ndev); + } + if (priv->rdev[i]->serdes->init_count) + phy_exit(priv->rdev[i]->serdes); + } + + return 0; +} + +static int renesas_eth_sw_resume(struct device *dev) +{ + struct rswitch_private *priv = dev_get_drvdata(dev); + struct net_device *ndev; + unsigned int i; + + rswitch_for_each_enabled_port(priv, i) { + phy_init(priv->rdev[i]->serdes); + ndev = priv->rdev[i]->ndev; + if (netif_running(ndev)) { + rswitch_open(ndev); + netif_device_attach(ndev); + } + } + + return 0; +} + +static DEFINE_SIMPLE_DEV_PM_OPS(renesas_eth_sw_pm_ops, renesas_eth_sw_suspend, + renesas_eth_sw_resume); + static struct platform_driver renesas_eth_sw_driver_platform = { .probe = renesas_eth_sw_probe, .remove_new = renesas_eth_sw_remove, .driver = { .name = "renesas_eth_sw", + .pm = pm_sleep_ptr(&renesas_eth_sw_pm_ops), .of_match_table = renesas_eth_sw_of_table, } };