From patchwork Thu Feb 27 12:52:40 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Dooks X-Patchwork-Id: 324795 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 49E732C009B for ; Thu, 27 Feb 2014 23:53:07 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751263AbaB0Mwr (ORCPT ); Thu, 27 Feb 2014 07:52:47 -0500 Received: from 82-68-191-81.dsl.posilan.com ([82.68.191.81]:41335 "EHLO rainbowdash.ducie.codethink.co.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750813AbaB0Mwq (ORCPT ); Thu, 27 Feb 2014 07:52:46 -0500 Received: from ben by rainbowdash.ducie.codethink.co.uk with local (Exim 4.82) (envelope-from ) id 1WJ0SA-0008UK-8q; Thu, 27 Feb 2014 12:52:42 +0000 From: Ben Dooks To: netdev@vger.kernel.org Cc: linux-sh@vger.kernel.org, sergei.shtylyov@cogentembedded.com, nobuhiro.iwamatsu.yj@renesas.com, magnus.damn@opensource.se, horms@verge.net.au, Ben Dooks Subject: [PATCH v5] sh_eth: update OF PHY registeration Date: Thu, 27 Feb 2014 12:52:40 +0000 Message-Id: <1393505560-32597-1-git-send-email-ben.dooks@codethink.co.uk> X-Mailer: git-send-email 1.8.5.3 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org If the sh_eth device is registered using OF, then the driver should call of_mdiobus_register() to register the PHYs described in the devicetree and then use of_phy_connect() to connect the PHYs to the device. This ensures that any PHYs registered in the device tree are appropriately connected to the parent devices nodes so that the PHY drivers can access their OF properties. Signed-off-by: Ben Dooks --- v2: - allocate mdio->irq array at init time - set devdata after succesful mdio registration v3: - do not parse phy->irq in of setup (done by of_mdiobus) - use of_phy_connect to connect phy v4: - fix review comments on code - reword patch description - change if to be two way in mdio init code v5: - fix comment duplication - move error to out of mdio init - updated patch description - add copyright codethink to header --- drivers/net/ethernet/renesas/sh_eth.c | 59 +++++++++++++++++++++++------------ 1 file changed, 39 insertions(+), 20 deletions(-) diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c index a18cbe1..b739038 100644 --- a/drivers/net/ethernet/renesas/sh_eth.c +++ b/drivers/net/ethernet/renesas/sh_eth.c @@ -3,6 +3,7 @@ * Copyright (C) 2006-2012 Nobuhiro Iwamatsu * Copyright (C) 2008-2014 Renesas Solutions Corp. * Copyright (C) 2013-2014 Cogent Embedded, Inc. + * Copyright (C) 2014 Codethink Limited * * This program is free software; you can redistribute it and/or modify it * under the terms and conditions of the GNU General Public License, @@ -40,6 +41,7 @@ #include #include #include +#include #include "sh_eth.h" @@ -1761,22 +1763,37 @@ static void sh_eth_adjust_link(struct net_device *ndev) /* PHY init function */ static int sh_eth_phy_init(struct net_device *ndev) { + struct device_node *np = ndev->dev.parent->of_node; struct sh_eth_private *mdp = netdev_priv(ndev); - char phy_id[MII_BUS_ID_SIZE + 3]; struct phy_device *phydev = NULL; - snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT, - mdp->mii_bus->id, mdp->phy_id); - mdp->link = 0; mdp->speed = 0; mdp->duplex = -1; /* Try connect to PHY */ - phydev = phy_connect(ndev, phy_id, sh_eth_adjust_link, - mdp->phy_interface); + if (np) { + struct device_node *pn; + + pn = of_parse_phandle(np, "phy-handle", 0); + phydev = of_phy_connect(ndev, pn, + sh_eth_adjust_link, 0, + mdp->phy_interface); + + if (!phydev) + phydev = ERR_PTR(-ENOENT); + } else { + char phy_id[MII_BUS_ID_SIZE + 3]; + + snprintf(phy_id, sizeof(phy_id), PHY_ID_FMT, + mdp->mii_bus->id, mdp->phy_id); + + phydev = phy_connect(ndev, phy_id, sh_eth_adjust_link, + mdp->phy_interface); + } + if (IS_ERR(phydev)) { - dev_err(&ndev->dev, "phy_connect failed\n"); + dev_err(&ndev->dev, "failed to connect phy\n"); return PTR_ERR(phydev); } @@ -2638,13 +2655,19 @@ static int sh_mdio_init(struct net_device *ndev, int id, goto out_free_bus; } - for (i = 0; i < PHY_MAX_ADDR; i++) - mdp->mii_bus->irq[i] = PHY_POLL; - if (pd->phy_irq > 0) - mdp->mii_bus->irq[pd->phy] = pd->phy_irq; + if (ndev->dev.parent->of_node) { + ret = of_mdiobus_register(mdp->mii_bus, + ndev->dev.parent->of_node); + } else { + for (i = 0; i < PHY_MAX_ADDR; i++) + mdp->mii_bus->irq[i] = PHY_POLL; + if (pd->phy_irq > 0) + mdp->mii_bus->irq[pd->phy] = pd->phy_irq; + + /* register mdio bus */ + ret = mdiobus_register(mdp->mii_bus); + } - /* register mdio bus */ - ret = mdiobus_register(mdp->mii_bus); if (ret) goto out_free_bus; @@ -2719,7 +2742,6 @@ static struct sh_eth_plat_data *sh_eth_parse_dt(struct device *dev) { struct device_node *np = dev->of_node; struct sh_eth_plat_data *pdata; - struct device_node *phy; const char *mac_addr; pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL); @@ -2728,11 +2750,6 @@ static struct sh_eth_plat_data *sh_eth_parse_dt(struct device *dev) pdata->phy_interface = of_get_phy_mode(np); - phy = of_parse_phandle(np, "phy-handle", 0); - if (of_property_read_u32(phy, "reg", &pdata->phy)) - return NULL; - pdata->phy_irq = irq_of_parse_and_map(phy, 0); - mac_addr = of_get_mac_address(np); if (mac_addr) memcpy(pdata->mac_addr, mac_addr, ETH_ALEN); @@ -2896,8 +2913,10 @@ static int sh_eth_drv_probe(struct platform_device *pdev) /* mdio bus init */ ret = sh_mdio_init(ndev, pdev->id, pd); - if (ret) + if (ret) { + dev_err(&ndev->dev, "failed to initialised mdio\n"); goto out_unregister; + } /* print device information */ pr_info("Base address at 0x%x, %pM, IRQ %d.\n",