From patchwork Wed Feb 6 20:51:06 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Moritz Fischer X-Patchwork-Id: 10800059 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id AC424746 for ; Wed, 6 Feb 2019 21:03:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 919A92D212 for ; Wed, 6 Feb 2019 21:03:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 824142D21D; Wed, 6 Feb 2019 21:03:18 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D390A2D21B for ; Wed, 6 Feb 2019 21:03:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726822AbfBFVDQ (ORCPT ); Wed, 6 Feb 2019 16:03:16 -0500 Received: from mail-pl1-f194.google.com ([209.85.214.194]:41638 "EHLO mail-pl1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726528AbfBFVDQ (ORCPT ); Wed, 6 Feb 2019 16:03:16 -0500 Received: by mail-pl1-f194.google.com with SMTP id k15so3669248pls.8 for ; Wed, 06 Feb 2019 13:03:16 -0800 (PST) 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:mime-version :content-transfer-encoding; bh=ev5fQYjMQIDVraJaISLnDDGA67yPU0B4LX8c1VpAgsA=; b=cUy/nhst5bC/ESBVaUOdVIuaUonaQZ60PR/c4gadASiRstLsukOSOzULPLuIDtfvxU 5N9dWpRRhYUazseHlMXi/KGx3QMjPx2o35CbcJWi2VeS6rP7G1o+miodaxR8PuyldfdS izuE6gNSyFSJdVNcuwFR/QBUB3XlSZ/DlVmFYbKz71Zi5ExewYyNZbTK/2rAMtHAnf84 hJrtSFLY4CpKuD8aP+eepYoZDLC2icOdEHKCjlxmqfigN9WOWSNQwR0K+n30yWmZK2O7 FKNNfCcxstadEmDcoN8yS+rg3Ge5+GWU8ph7A9X6oe5cEqoHkH7536GOWZMbDXTeXzt4 XVcg== X-Gm-Message-State: AHQUAubmXA0hErGpJNa0mV+Wyu9nQ7yBO2BBCY3JklK6RwNmSF2CHrhL A9Y5fF7IaO+rpqbEn+s+djkI6Q== X-Google-Smtp-Source: AHgI3IZYDu53/aarId4xjuLEwGl4OF30uoBlkKsuU4ibgMLuaqdzsGXnuuEAW5MGXF/KTzEemAih+g== X-Received: by 2002:a17:902:724a:: with SMTP id c10mr12974650pll.51.1549486995489; Wed, 06 Feb 2019 13:03:15 -0800 (PST) Received: from localhost ([207.114.172.147]) by smtp.gmail.com with ESMTPSA id h129sm13766888pfb.110.2019.02.06.13.03.14 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Wed, 06 Feb 2019 13:03:14 -0800 (PST) From: Moritz Fischer To: linux-kernel@vger.kernel.org Cc: linux-usb@vger.kernel.org, netdev@vger.kernel.org, colin.king@canonical.com, linus.walleij@linaro.org, yuehaibing@huawei.com, mcgrof@kernel.org, frowand.list@gmail.com, robh+dt@kernel.org, UNGLinuxDriver@microchip.com, woojung.huh@microchip.com, hkallweit1@gmail.com, davem@davemloft.net, f.fainelli@gmail.com, vivien.didelot@gmail.com, andrew@lunn.ch, moritz@ettus.com, alex.williams@ni.com, Moritz Fischer Subject: [RFC net-next] net: fixed_phy: Move the DT based link GPIO parsing to of_mdio.c Date: Wed, 6 Feb 2019 12:51:06 -0800 Message-Id: <20190206205106.11517-1-mdf@kernel.org> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Move the DT based link GPIO parsing to of_mdio and let the places that register a fixed_phy pass in a GPIO descriptor or NULL. This allows fixed_phy on non-DT platforms to have link GPIOs, too. Signed-off-by: Moritz Fischer --- drivers/net/dsa/dsa_loop.c | 2 +- drivers/net/ethernet/broadcom/bgmac.c | 2 +- drivers/net/ethernet/broadcom/genet/bcmmii.c | 2 +- drivers/net/phy/fixed_phy.c | 48 ++------------------ drivers/net/usb/lan78xx.c | 2 +- drivers/of/of_mdio.c | 15 +++++- include/linux/phy_fixed.h | 3 +- 7 files changed, 23 insertions(+), 51 deletions(-) diff --git a/drivers/net/dsa/dsa_loop.c b/drivers/net/dsa/dsa_loop.c index 17482ae09aa5..7f124c620092 100644 --- a/drivers/net/dsa/dsa_loop.c +++ b/drivers/net/dsa/dsa_loop.c @@ -343,7 +343,7 @@ static int __init dsa_loop_init(void) unsigned int i; for (i = 0; i < NUM_FIXED_PHYS; i++) - phydevs[i] = fixed_phy_register(PHY_POLL, &status, NULL); + phydevs[i] = fixed_phy_register(PHY_POLL, &status, NULL, NULL); return mdio_driver_register(&dsa_loop_drv); } diff --git a/drivers/net/ethernet/broadcom/bgmac.c b/drivers/net/ethernet/broadcom/bgmac.c index 4632dd5dbad1..bce644dec5c2 100644 --- a/drivers/net/ethernet/broadcom/bgmac.c +++ b/drivers/net/ethernet/broadcom/bgmac.c @@ -1446,7 +1446,7 @@ int bgmac_phy_connect_direct(struct bgmac *bgmac) struct phy_device *phy_dev; int err; - phy_dev = fixed_phy_register(PHY_POLL, &fphy_status, NULL); + phy_dev = fixed_phy_register(PHY_POLL, &fphy_status, NULL, NULL); if (!phy_dev || IS_ERR(phy_dev)) { dev_err(bgmac->dev, "Failed to register fixed PHY device\n"); return -ENODEV; diff --git a/drivers/net/ethernet/broadcom/genet/bcmmii.c b/drivers/net/ethernet/broadcom/genet/bcmmii.c index 51880d83131a..7cbd737aba80 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmmii.c +++ b/drivers/net/ethernet/broadcom/genet/bcmmii.c @@ -525,7 +525,7 @@ static int bcmgenet_mii_pd_init(struct bcmgenet_priv *priv) .asym_pause = 0, }; - phydev = fixed_phy_register(PHY_POLL, &fphy_status, NULL); + phydev = fixed_phy_register(PHY_POLL, &fphy_status, NULL, NULL); if (!phydev || IS_ERR(phydev)) { dev_err(kdev, "failed to register fixed PHY device\n"); return -ENODEV; diff --git a/drivers/net/phy/fixed_phy.c b/drivers/net/phy/fixed_phy.c index d810f914aaa4..845bd7c2065a 100644 --- a/drivers/net/phy/fixed_phy.c +++ b/drivers/net/phy/fixed_phy.c @@ -18,6 +18,7 @@ #include #include #include +#include #include #include #include @@ -191,50 +192,12 @@ static void fixed_phy_del(int phy_addr) } } -#ifdef CONFIG_OF_GPIO -static struct gpio_desc *fixed_phy_get_gpiod(struct device_node *np) -{ - struct device_node *fixed_link_node; - struct gpio_desc *gpiod; - - if (!np) - return NULL; - - fixed_link_node = of_get_child_by_name(np, "fixed-link"); - if (!fixed_link_node) - return NULL; - - /* - * As the fixed link is just a device tree node without any - * Linux device associated with it, we simply have obtain - * the GPIO descriptor from the device tree like this. - */ - gpiod = gpiod_get_from_of_node(fixed_link_node, "link-gpios", 0, - GPIOD_IN, "mdio"); - of_node_put(fixed_link_node); - if (IS_ERR(gpiod)) { - if (PTR_ERR(gpiod) == -EPROBE_DEFER) - return gpiod; - pr_err("error getting GPIO for fixed link %pOF, proceed without\n", - fixed_link_node); - gpiod = NULL; - } - - return gpiod; -} -#else -static struct gpio_desc *fixed_phy_get_gpiod(struct device_node *np) -{ - return NULL; -} -#endif - struct phy_device *fixed_phy_register(unsigned int irq, struct fixed_phy_status *status, - struct device_node *np) + struct device_node *np, + struct gpio_desc *gpiod) { struct fixed_mdio_bus *fmb = &platform_fmb; - struct gpio_desc *gpiod = NULL; struct phy_device *phy; int phy_addr; int ret; @@ -242,11 +205,6 @@ struct phy_device *fixed_phy_register(unsigned int irq, if (!fmb->mii_bus || fmb->mii_bus->state != MDIOBUS_REGISTERED) return ERR_PTR(-EPROBE_DEFER); - /* Check if we have a GPIO associated with this fixed phy */ - gpiod = fixed_phy_get_gpiod(np); - if (IS_ERR(gpiod)) - return ERR_CAST(gpiod); - /* Get the next available PHY address, up to PHY_MAX_ADDR */ phy_addr = ida_simple_get(&phy_fixed_ida, 0, PHY_MAX_ADDR, GFP_KERNEL); if (phy_addr < 0) diff --git a/drivers/net/usb/lan78xx.c b/drivers/net/usb/lan78xx.c index 3d92ea6fcc02..bd88f0aef2fa 100644 --- a/drivers/net/usb/lan78xx.c +++ b/drivers/net/usb/lan78xx.c @@ -2051,7 +2051,7 @@ static struct phy_device *lan7801_phy_init(struct lan78xx_net *dev) phydev = phy_find_first(dev->mdiobus); if (!phydev) { netdev_dbg(dev->net, "PHY Not Found!! Registering Fixed PHY\n"); - phydev = fixed_phy_register(PHY_POLL, &fphy_status, NULL); + phydev = fixed_phy_register(PHY_POLL, &fphy_status, NULL, NULL); if (IS_ERR(phydev)) { netdev_err(dev->net, "No PHY/fixed_PHY found\n"); return NULL; diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c index de6157357e26..6be2120b5f03 100644 --- a/drivers/of/of_mdio.c +++ b/drivers/of/of_mdio.c @@ -20,6 +20,7 @@ #include #include #include +#include #define DEFAULT_GPIO_RESET_DELAY 10 /* in microseconds */ @@ -460,6 +461,7 @@ int of_phy_register_fixed_link(struct device_node *np) { struct fixed_phy_status status = {}; struct device_node *fixed_link_node; + struct gpio_desc *gpiod = NULL; u32 fixed_link_prop[5]; const char *managed; @@ -483,7 +485,17 @@ int of_phy_register_fixed_link(struct device_node *np) status.pause = of_property_read_bool(fixed_link_node, "pause"); status.asym_pause = of_property_read_bool(fixed_link_node, "asym-pause"); + + gpiod = gpiod_get_from_of_node(fixed_link_node, "link-gpios", 0, + GPIOD_IN, "mdio"); of_node_put(fixed_link_node); + if (IS_ERR(gpiod)) { + if (PTR_ERR(gpiod) == -EPROBE_DEFER) + return PTR_ERR(gpiod); + pr_err("error getting GPIO for fixed link %pOF, proceed without\n", + fixed_link_node); + gpiod = NULL; + } goto register_phy; } @@ -502,7 +514,8 @@ int of_phy_register_fixed_link(struct device_node *np) return -ENODEV; register_phy: - return PTR_ERR_OR_ZERO(fixed_phy_register(PHY_POLL, &status, np)); + return PTR_ERR_OR_ZERO(fixed_phy_register(PHY_POLL, &status, np, + gpiod)); } EXPORT_SYMBOL(of_phy_register_fixed_link); diff --git a/include/linux/phy_fixed.h b/include/linux/phy_fixed.h index c78fc203db43..69caa8cda767 100644 --- a/include/linux/phy_fixed.h +++ b/include/linux/phy_fixed.h @@ -18,7 +18,8 @@ extern int fixed_phy_add(unsigned int irq, int phy_id, struct fixed_phy_status *status); extern struct phy_device *fixed_phy_register(unsigned int irq, struct fixed_phy_status *status, - struct device_node *np); + struct device_node *np, + struct gpio_desc *gpiod); extern void fixed_phy_unregister(struct phy_device *phydev); extern int fixed_phy_set_link_update(struct phy_device *phydev, int (*link_update)(struct net_device *,