From patchwork Wed Jun 16 19:07:58 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marcin Wojtas X-Patchwork-Id: 461869 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=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, 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 2A78EC49361 for ; Wed, 16 Jun 2021 19:08:48 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 16E53611CE for ; Wed, 16 Jun 2021 19:08:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232450AbhFPTKx (ORCPT ); Wed, 16 Jun 2021 15:10:53 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59820 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232411AbhFPTKh (ORCPT ); Wed, 16 Jun 2021 15:10:37 -0400 Received: from mail-lf1-x12a.google.com (mail-lf1-x12a.google.com [IPv6:2a00:1450:4864:20::12a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 28A45C0617AF for ; Wed, 16 Jun 2021 12:08:29 -0700 (PDT) Received: by mail-lf1-x12a.google.com with SMTP id r5so6060871lfr.5 for ; Wed, 16 Jun 2021 12:08:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=semihalf-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=bJlskXXqPukoUIiMaWjgnuEmfc7b1Qye4aSSYHDeJ90=; b=j6UvX9zq/sPizWvzFQ1T0u4GCMD2XjPHC82VcPSaJaKiBAcneookTY3Ed1d02CaGrd 7dIFeO4QpfuK14mdUlK5ACdVgDNO9Tads/4fiOTUp46WubLTThwTtqyJBpaTw2ozwf98 kVFXdNqARq0/KzDDbnsPyhO0Q7kFR4z1uUouFCjO81jhMnN4JHGkltf4iYJKs91ZKtOU hlTKE9Zsm8ug4xTDHHQ4nfSgj+8RoDlwMSJe8nYjgWDGqHLoWKka/mazzDVT82VfNJrM Dl8fVLHuAA6racPJi0+YyHoW9cZDPQJ9s1juS5QqLvoLpul8e1h35NX0FvuZHqTV23UX KVIw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=bJlskXXqPukoUIiMaWjgnuEmfc7b1Qye4aSSYHDeJ90=; b=L29Ke9thBkeKxOelyLhKij2Ot5S3IjvpG+zzq1QMj7OkTyLotbP0G1Yud82jPBEHOh OWAFAjeTTj4DhfCRJb21DQeIIB1zji1HrXbfkK2FvmKh8zyjHdqfk5Yt5NiazY649TzZ vF2e1/keF3ZqRVijHdmWJ5FUhHQzkPAxk+rvVPuOrvg1gXIZprh9pyoErV0w4jrZiDN9 1XjFaYv3J4H906oA0Tx+ZCwsQrMRWptEHImmrw2OOGTSn3seHYNexEy57zQUi8taSHF3 4icD4uXABJ80OX0pMduzwgFAN+BPISq+EfSpe5fGTWBWUphXXmEbQhkcVeqSvxXz68yH R8IA== X-Gm-Message-State: AOAM530mQGlDBk49EJkf2U1/5UY52IUL7O1EXCNnuSg3+HJil14NZwtu d9TQ+KNeEAVpbP5wstsN9igb1w== X-Google-Smtp-Source: ABdhPJwdwrSxllmvf4YfPOQkJpoCeiA8FUGeCt7NkwLbEr7swjLDXq2ri/thhPsM39fORUQAZYi3dw== X-Received: by 2002:ac2:51b3:: with SMTP id f19mr937764lfk.218.1623870507506; Wed, 16 Jun 2021 12:08:27 -0700 (PDT) Received: from gilgamesh.lab.semihalf.net ([83.142.187.85]) by smtp.gmail.com with ESMTPSA id h22sm406939ljl.126.2021.06.16.12.08.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Jun 2021 12:08:26 -0700 (PDT) From: Marcin Wojtas To: linux-kernel@vger.kernel.org, netdev@vger.kernel.org Cc: davem@davemloft.net, kuba@kernel.org, linux@armlinux.org.uk, jaz@semihalf.com, gjb@semihalf.com, upstream@semihalf.com, Samer.El-Haj-Mahmoud@arm.com, jon@solid-run.com, tn@semihalf.com, rjw@rjwysocki.net, lenb@kernel.org, Marcin Wojtas Subject: [net-next: PATCH v2 6/7] net: mvpp2: enable using phylink with ACPI Date: Wed, 16 Jun 2021 21:07:58 +0200 Message-Id: <20210616190759.2832033-7-mw@semihalf.com> X-Mailer: git-send-email 2.29.0 In-Reply-To: <20210616190759.2832033-1-mw@semihalf.com> References: <20210616190759.2832033-1-mw@semihalf.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Now that the MDIO and phylink are supported in the ACPI world, enable to use them in the mvpp2 driver. Ensure a backward compatibility with the firmware whose ACPI description does not contain the necessary elements for the proper phy handling and fall back to relying on the link interrupts instead. Signed-off-by: Marcin Wojtas --- drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c | 22 +++++++++++++++----- 1 file changed, 17 insertions(+), 5 deletions(-) diff --git a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c index 9bca8c8f9f8d..a66ed3194015 100644 --- a/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c +++ b/drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c @@ -4793,9 +4793,8 @@ static int mvpp2_open(struct net_device *dev) goto err_cleanup_txqs; } - /* Phylink isn't supported yet in ACPI mode */ - if (port->of_node) { - err = phylink_of_phy_connect(port->phylink, port->of_node, 0); + if (port->phylink) { + err = phylink_fwnode_phy_connect(port->phylink, port->fwnode, 0); if (err) { netdev_err(port->dev, "could not attach PHY (%d)\n", err); @@ -6703,6 +6702,19 @@ static void mvpp2_acpi_start(struct mvpp2_port *port) SPEED_UNKNOWN, DUPLEX_UNKNOWN, false, false); } +/* In order to ensure backward compatibility for ACPI, check if the port + * firmware node comprises the necessary description allowing to use phylink. + */ +static bool mvpp2_use_acpi_compat_mode(struct fwnode_handle *port_fwnode) +{ + if (!is_acpi_node(port_fwnode)) + return false; + + return (!fwnode_property_present(port_fwnode, "phy-handle") && + !fwnode_property_present(port_fwnode, "managed") && + !fwnode_get_named_child_node(port_fwnode, "fixed-link")); +} + /* Ports initialization */ static int mvpp2_port_probe(struct platform_device *pdev, struct fwnode_handle *port_fwnode, @@ -6921,8 +6933,7 @@ static int mvpp2_port_probe(struct platform_device *pdev, dev->max_mtu = MVPP2_BM_JUMBO_PKT_SIZE; dev->dev.of_node = port_node; - /* Phylink isn't used w/ ACPI as of now */ - if (port_node) { + if (!mvpp2_use_acpi_compat_mode(port_fwnode)) { port->phylink_config.dev = &dev->dev; port->phylink_config.type = PHYLINK_NETDEV; @@ -6934,6 +6945,7 @@ static int mvpp2_port_probe(struct platform_device *pdev, } port->phylink = phylink; } else { + dev_warn(&pdev->dev, "Use link irqs for port#%d. FW update required\n", port->id); port->phylink = NULL; }