From patchwork Thu Mar 12 06:34:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 222660 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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 CE341C5ACC0 for ; Thu, 12 Mar 2020 06:34:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C866320575 for ; Thu, 12 Mar 2020 06:34:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388000AbgCLGek (ORCPT ); Thu, 12 Mar 2020 02:34:40 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:43337 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387978AbgCLGef (ORCPT ); Thu, 12 Mar 2020 02:34:35 -0400 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jCHQF-0006xP-M0; Thu, 12 Mar 2020 07:34:23 +0100 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1jCHQE-0006AM-C5; Thu, 12 Mar 2020 07:34:22 +0100 From: Oleksij Rempel To: Andrew Lunn , Florian Fainelli , Heiner Kallweit , Mark Rutland , Rob Herring Cc: Oleksij Rempel , Pengutronix Kernel Team , linux-kernel@vger.kernel.org, "David S. Miller" , netdev@vger.kernel.org, Marek Vasut , David Jander , devicetree@vger.kernel.org Subject: [PATCH v3 3/4] net: mdio: of: export part of of_mdiobus_register_phy() Date: Thu, 12 Mar 2020 07:34:18 +0100 Message-Id: <20200312063419.23615-4-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200312063419.23615-1-o.rempel@pengutronix.de> References: <20200312063419.23615-1-o.rempel@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: netdev@vger.kernel.org Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This function will be needed in tja11xx driver for secondary PHY support. Signed-off-by: Oleksij Rempel --- drivers/of/of_mdio.c | 74 ++++++++++++++++++++++++----------------- include/linux/of_mdio.h | 11 +++++- 2 files changed, 53 insertions(+), 32 deletions(-) diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c index 8270bbf505fb..6ee7e49dcb86 100644 --- a/drivers/of/of_mdio.c +++ b/drivers/of/of_mdio.c @@ -60,39 +60,16 @@ static struct mii_timestamper *of_find_mii_timestamper(struct device_node *node) return register_mii_timestamper(arg.np, arg.args[0]); } -static int of_mdiobus_register_phy(struct mii_bus *mdio, - struct device_node *child, u32 addr) +int __of_mdiobus_register_phy(struct mii_bus *mdio, struct phy_device *phy, + struct device_node *child, u32 addr) { - struct mii_timestamper *mii_ts; - struct phy_device *phy; - bool is_c45; - int rc; u32 phy_id; - - mii_ts = of_find_mii_timestamper(child); - if (IS_ERR(mii_ts)) - return PTR_ERR(mii_ts); - - is_c45 = of_device_is_compatible(child, - "ethernet-phy-ieee802.3-c45"); - - if (!is_c45 && !of_get_phy_id(child, &phy_id)) - phy = phy_device_create(mdio, addr, phy_id, 0, NULL); - else - phy = get_phy_device(mdio, addr, is_c45); - if (IS_ERR(phy)) { - if (mii_ts) - unregister_mii_timestamper(mii_ts); - return PTR_ERR(phy); - } + int rc; rc = of_irq_get(child, 0); - if (rc == -EPROBE_DEFER) { - if (mii_ts) - unregister_mii_timestamper(mii_ts); - phy_device_free(phy); + if (rc == -EPROBE_DEFER) return rc; - } + if (rc > 0) { phy->irq = rc; mdio->irq[addr] = rc; @@ -117,11 +94,48 @@ static int of_mdiobus_register_phy(struct mii_bus *mdio, /* All data is now stored in the phy struct; * register it */ rc = phy_device_register(phy); + if (rc) { + of_node_put(child); + return rc; + } + + dev_dbg(&mdio->dev, "registered phy %pOFn at address %i\n", + child, addr); + return 0; +} +EXPORT_SYMBOL(__of_mdiobus_register_phy); + +static int of_mdiobus_register_phy(struct mii_bus *mdio, + struct device_node *child, u32 addr) +{ + struct mii_timestamper *mii_ts; + struct phy_device *phy; + bool is_c45; + int rc; + u32 phy_id; + + mii_ts = of_find_mii_timestamper(child); + if (IS_ERR(mii_ts)) + return PTR_ERR(mii_ts); + + is_c45 = of_device_is_compatible(child, + "ethernet-phy-ieee802.3-c45"); + + if (!is_c45 && !of_get_phy_id(child, &phy_id)) + phy = phy_device_create(mdio, addr, phy_id, 0, NULL); + else + phy = get_phy_device(mdio, addr, is_c45); + if (IS_ERR(phy)) { + if (mii_ts) + unregister_mii_timestamper(mii_ts); + return PTR_ERR(phy); + } + + rc = __of_mdiobus_register_phy(mdio, phy, child, addr); if (rc) { if (mii_ts) unregister_mii_timestamper(mii_ts); phy_device_free(phy); - of_node_put(child); return rc; } @@ -132,8 +146,6 @@ static int of_mdiobus_register_phy(struct mii_bus *mdio, if (mii_ts) phy->mii_ts = mii_ts; - dev_dbg(&mdio->dev, "registered phy %pOFn at address %i\n", - child, addr); return 0; } diff --git a/include/linux/of_mdio.h b/include/linux/of_mdio.h index 491a2b7e77c1..b99e9f932002 100644 --- a/include/linux/of_mdio.h +++ b/include/linux/of_mdio.h @@ -30,7 +30,9 @@ extern struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np); extern int of_phy_register_fixed_link(struct device_node *np); extern void of_phy_deregister_fixed_link(struct device_node *np); extern bool of_phy_is_fixed_link(struct device_node *np); - +extern int __of_mdiobus_register_phy(struct mii_bus *mdio, + struct phy_device *phy, + struct device_node *child, u32 addr); static inline int of_mdio_parse_addr(struct device *dev, const struct device_node *np) @@ -118,6 +120,13 @@ static inline bool of_phy_is_fixed_link(struct device_node *np) { return false; } + +static inline int __of_mdiobus_register_phy(struct mii_bus *mdio, + struct phy_device *phy, + struct device_node *child, u32 addr) +{ + return -ENOSYS; +} #endif From patchwork Thu Mar 12 06:34:19 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 222659 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=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, UNWANTED_LANGUAGE_BODY,USER_AGENT_GIT autolearn=unavailable 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 4A4CEC5ACC0 for ; Thu, 12 Mar 2020 06:34:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 4644520575 for ; Thu, 12 Mar 2020 06:34:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388007AbgCLGep (ORCPT ); Thu, 12 Mar 2020 02:34:45 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:57023 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2387954AbgCLGef (ORCPT ); Thu, 12 Mar 2020 02:34:35 -0400 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1jCHQF-0006xQ-M4; Thu, 12 Mar 2020 07:34:23 +0100 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.92) (envelope-from ) id 1jCHQE-0006AV-DP; Thu, 12 Mar 2020 07:34:22 +0100 From: Oleksij Rempel To: Andrew Lunn , Florian Fainelli , Heiner Kallweit , Mark Rutland , Rob Herring Cc: Oleksij Rempel , Pengutronix Kernel Team , linux-kernel@vger.kernel.org, "David S. Miller" , netdev@vger.kernel.org, Marek Vasut , David Jander , devicetree@vger.kernel.org Subject: [PATCH v3 4/4] net: phy: tja11xx: add delayed registration of TJA1102 PHY1 Date: Thu, 12 Mar 2020 07:34:19 +0100 Message-Id: <20200312063419.23615-5-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200312063419.23615-1-o.rempel@pengutronix.de> References: <20200312063419.23615-1-o.rempel@pengutronix.de> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: netdev@vger.kernel.org Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org TJA1102 is a dual PHY package with PHY0 having proper PHYID and PHY1 having no ID. On one hand it is possible to for PHY detection by compatible, on other hand we should be able to reset complete chip before PHY1 configured it, and we need to define dependencies for proper power management. We can solve it by defining PHY1 as child of PHY0: tja1102_phy0: ethernet-phy@4 { reg = <0x4>; interrupts-extended = <&gpio5 8 IRQ_TYPE_LEVEL_LOW>; reset-gpios = <&gpio5 9 GPIO_ACTIVE_LOW>; reset-assert-us = <20>; reset-deassert-us = <2000>; tja1102_phy1: ethernet-phy@5 { reg = <0x5>; interrupts-extended = <&gpio5 8 IRQ_TYPE_LEVEL_LOW>; }; }; The PHY1 should be a subnode of PHY0 and registered only after PHY0 was completely reset and initialized. Signed-off-by: Oleksij Rempel --- drivers/net/phy/nxp-tja11xx.c | 112 +++++++++++++++++++++++++++++++--- 1 file changed, 105 insertions(+), 7 deletions(-) diff --git a/drivers/net/phy/nxp-tja11xx.c b/drivers/net/phy/nxp-tja11xx.c index a064e4ab3616..2bde9386baf1 100644 --- a/drivers/net/phy/nxp-tja11xx.c +++ b/drivers/net/phy/nxp-tja11xx.c @@ -6,11 +6,14 @@ #include #include #include +#include #include #include #include #include #include +#include +#include #define PHY_ID_MASK 0xfffffff0 #define PHY_ID_TJA1100 0x0180dc40 @@ -57,6 +60,8 @@ struct tja11xx_priv { char *hwmon_name; struct device *hwmon_dev; + struct phy_device *phydev; + struct work_struct phy_register_work; }; struct tja11xx_phy_stats { @@ -333,16 +338,12 @@ static const struct hwmon_chip_info tja11xx_hwmon_chip_info = { .info = tja11xx_hwmon_info, }; -static int tja11xx_probe(struct phy_device *phydev) +static int tja11xx_hwmon_register(struct phy_device *phydev, + struct tja11xx_priv *priv) { struct device *dev = &phydev->mdio.dev; - struct tja11xx_priv *priv; int i; - priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); - if (!priv) - return -ENOMEM; - priv->hwmon_name = devm_kstrdup(dev, dev_name(dev), GFP_KERNEL); if (!priv->hwmon_name) return -ENOMEM; @@ -360,6 +361,103 @@ static int tja11xx_probe(struct phy_device *phydev) return PTR_ERR_OR_ZERO(priv->hwmon_dev); } +static int tja11xx_probe(struct phy_device *phydev) +{ + struct device *dev = &phydev->mdio.dev; + struct tja11xx_priv *priv; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->phydev = phydev; + + return tja11xx_hwmon_register(phydev, priv); +} + +static void tja1102_p1_register(struct work_struct *work) +{ + struct tja11xx_priv *priv = container_of(work, struct tja11xx_priv, + phy_register_work); + struct phy_device *phydev_phy0 = priv->phydev; + struct mii_bus *bus = phydev_phy0->mdio.bus; + struct device *dev = &phydev_phy0->mdio.dev; + struct device_node *np = dev->of_node; + struct device_node *child; + int ret; + + for_each_available_child_of_node(np, child) { + struct phy_device *phy; + int addr; + + addr = of_mdio_parse_addr(dev, child); + if (addr < 0) { + dev_err(dev, "Can't parse addr\n"); + continue; + } else if (addr != phydev_phy0->mdio.addr + 1) { + /* Currently we care only about double PHY chip TJA1102. + * If some day NXP will decide to bring chips with more + * PHYs, this logic should be reworked. + */ + dev_err(dev, "Unexpected address. Should be: %i\n", + phydev_phy0->mdio.addr + 1); + continue; + } + + if (mdiobus_is_registered_device(bus, addr)) { + dev_err(dev, "device is already registered\n"); + continue; + } + + /* Real PHY ID of Port 1 is 0 */ + phy = phy_device_create(bus, addr, PHY_ID_TJA1102, false, NULL); + if (IS_ERR(phy)) { + dev_err(dev, "Can't create PHY device for Port 1: %i\n", + addr); + continue; + } + + /* Overwrite parent device. phy_device_create() set parent to + * the mii_bus->dev, which is not correct in case. + */ + phy->mdio.dev.parent = dev; + + ret = __of_mdiobus_register_phy(bus, phy, child, addr); + if (ret) { + /* All resources needed for Port 1 should be already + * available for Port 0. Both ports use the same + * interrupt line, so -EPROBE_DEFER would make no sense + * here. + */ + dev_err(dev, "Can't register Port 1. Unexpected error: %i\n", + ret); + phy_device_free(phy); + } + } +} + +static int tja1102_p0_probe(struct phy_device *phydev) +{ + struct device *dev = &phydev->mdio.dev; + struct tja11xx_priv *priv; + int ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->phydev = phydev; + INIT_WORK(&priv->phy_register_work, tja1102_p1_register); + + ret = tja11xx_hwmon_register(phydev, priv); + if (ret) + return ret; + + schedule_work(&priv->phy_register_work); + + return 0; +} + static int tja1102_match_phy_device(struct phy_device *phydev, bool port0) { int ret; @@ -443,7 +541,7 @@ static struct phy_driver tja11xx_driver[] = { }, { .name = "NXP TJA1102 Port 0", .features = PHY_BASIC_T1_FEATURES, - .probe = tja11xx_probe, + .probe = tja1102_p0_probe, .soft_reset = tja11xx_soft_reset, .config_init = tja11xx_config_init, .read_status = tja11xx_read_status,