From patchwork Fri Jun 11 10:53:49 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ioana Ciornei X-Patchwork-Id: 12315323 X-Patchwork-Delegate: kuba@kernel.org 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=-14.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,HK_RANDOM_FROM,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,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 6FC29C48BD1 for ; Fri, 11 Jun 2021 10:56:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5BB8561287 for ; Fri, 11 Jun 2021 10:56:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231912AbhFKK6s (ORCPT ); Fri, 11 Jun 2021 06:58:48 -0400 Received: from mail-ej1-f42.google.com ([209.85.218.42]:35542 "EHLO mail-ej1-f42.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231608AbhFKK5z (ORCPT ); Fri, 11 Jun 2021 06:57:55 -0400 Received: by mail-ej1-f42.google.com with SMTP id h24so3941741ejy.2; Fri, 11 Jun 2021 03:55:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=Hh+84caZ/SbvSAPRvXHMuFBYO9AZu2WHPl7V2NGTs6s=; b=pb73Gf73D7D6NvWB8p0mi1JhyJGABUdlzoBytX/ziA1Gq6zZk0Xv4wHWAo5gQKdHFL C+CB+RzJee3wPs0DCw1EciqlXaPqhijBZdFt54jP/yT42ldAJur02VHqNa8DTvBxgm62 nvcf+6MZ5GdtoGAwNhx5wgjzrHVSk0QO36g2K8OQd46zYxJjBn81kcLY068/NNUZT18e mnb4urEZ5iJ6C2eyONtFURvUtCmAx4e3iBMhwVVqS+oRM+yLCNuBwBoaoxSO2Tk5Gimz 3heY+TmnMPhiC0kMP/u8jzzsYwCkHXaeera+dOgZAARMVOR7wM3PY6d9X7O6oppzZZFF fgWA== 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=Hh+84caZ/SbvSAPRvXHMuFBYO9AZu2WHPl7V2NGTs6s=; b=HUIG1B0r6P84gwKxjphbyQrhmpVQ9NyQFJoubLEZ/JGEVX/zAXt3rsCY+mAlakrl8w sXsNRZqjM1eUXy0qt7cA5U/PdonQ6AN0ivKQukU0ES+m/mQLdz4m1emqQSfe00UCohvm Pv5gWW8e+GcE5lzoNAUIy1+gj1fUD+lkBD2l6xk/QATScgENNzR6ktrvxMeY0IP+cO4z AGHinINhQ9KWjZaRYQMynmYMdH0Jgk3tTR4i/G47RxUXEcM5lTYo7nXQdPEF4XL7mQQ9 aha0WL6TF8w3MlhqXrLShnO8z67UCtSksArIY4LMdvEnQgoj0fFfTUx+O2vZ6ErdvcX7 SoNQ== X-Gm-Message-State: AOAM530p++C3qWp4di8I5TRwVHWhcMP801ptpGHWgudOYLIwGNNiBJLd 3VO4Ml5DnJMhAxtjPuUzuGE= X-Google-Smtp-Source: ABdhPJy7tGoqQG3bkQpAHajqNCmv3hTHD2EUDTzVxj/qz8FBR2hinU/Ctq3vjb+zzMRVAq0j+Bvv1w== X-Received: by 2002:a17:907:96a1:: with SMTP id hd33mr2090740ejc.68.1623408887167; Fri, 11 Jun 2021 03:54:47 -0700 (PDT) Received: from yoga-910.localhost ([188.26.52.84]) by smtp.gmail.com with ESMTPSA id r19sm2492051eds.75.2021.06.11.03.54.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 11 Jun 2021 03:54:46 -0700 (PDT) From: Ioana Ciornei To: davem@davemloft.net, kuba@kernel.org, hkallweit1@gmail.com, netdev@vger.kernel.org, Grant Likely , "Rafael J . Wysocki" , Jeremy Linton , Andrew Lunn , Andy Shevchenko , Florian Fainelli , Russell King - ARM Linux admin , Heikki Krogerus , Marcin Wojtas , Pieter Jansen Van Vuuren , Jon , Saravana Kannan , Randy Dunlap , calvin.johnson@oss.nxp.com Cc: Cristi Sovaiala , Florin Laurentiu Chiculita , Madalin Bucur , linux-arm-kernel@lists.infradead.org, Diana Madalina Craciun , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux.cj@gmail.com, Laurentiu Tudor , Len Brown , "Rafael J . Wysocki" , Ioana Ciornei Subject: [PATCH net-next v9 03/15] net: phy: Introduce phy related fwnode functions Date: Fri, 11 Jun 2021 13:53:49 +0300 Message-Id: <20210611105401.270673-4-ciorneiioana@gmail.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210611105401.270673-1-ciorneiioana@gmail.com> References: <20210611105401.270673-1-ciorneiioana@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org From: Calvin Johnson Define fwnode_phy_find_device() to iterate an mdiobus and find the phy device of the provided phy fwnode. Additionally define device_phy_find_device() to find phy device of provided device. Define fwnode_get_phy_node() to get phy_node using named reference. Signed-off-by: Calvin Johnson Signed-off-by: Ioana Ciornei Acked-by: Grant Likely --- Changes in v9: None Changes in v8: None Changes in v7: None Changes in v6: None Changes in v5: None Changes in v4: None Changes in v3: - Add more info on legacy DT properties "phy" and "phy-device" - Redefine fwnode_phy_find_device() to follow of_phy_find_device() Changes in v2: - use reverse christmas tree ordering for local variables drivers/net/phy/phy_device.c | 62 ++++++++++++++++++++++++++++++++++++ include/linux/phy.h | 20 ++++++++++++ 2 files changed, 82 insertions(+) diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index dca454b5c209..786f464216dd 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -9,6 +9,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt +#include #include #include #include @@ -2898,6 +2899,67 @@ struct mdio_device *fwnode_mdio_find_device(struct fwnode_handle *fwnode) } EXPORT_SYMBOL(fwnode_mdio_find_device); +/** + * fwnode_phy_find_device - For provided phy_fwnode, find phy_device. + * + * @phy_fwnode: Pointer to the phy's fwnode. + * + * If successful, returns a pointer to the phy_device with the embedded + * struct device refcount incremented by one, or NULL on failure. + */ +struct phy_device *fwnode_phy_find_device(struct fwnode_handle *phy_fwnode) +{ + struct mdio_device *mdiodev; + + mdiodev = fwnode_mdio_find_device(phy_fwnode); + if (!mdiodev) + return NULL; + + if (mdiodev->flags & MDIO_DEVICE_FLAG_PHY) + return to_phy_device(&mdiodev->dev); + + put_device(&mdiodev->dev); + + return NULL; +} +EXPORT_SYMBOL(fwnode_phy_find_device); + +/** + * device_phy_find_device - For the given device, get the phy_device + * @dev: Pointer to the given device + * + * Refer return conditions of fwnode_phy_find_device(). + */ +struct phy_device *device_phy_find_device(struct device *dev) +{ + return fwnode_phy_find_device(dev_fwnode(dev)); +} +EXPORT_SYMBOL_GPL(device_phy_find_device); + +/** + * fwnode_get_phy_node - Get the phy_node using the named reference. + * @fwnode: Pointer to fwnode from which phy_node has to be obtained. + * + * Refer return conditions of fwnode_find_reference(). + * For ACPI, only "phy-handle" is supported. Legacy DT properties "phy" + * and "phy-device" are not supported in ACPI. DT supports all the three + * named references to the phy node. + */ +struct fwnode_handle *fwnode_get_phy_node(struct fwnode_handle *fwnode) +{ + struct fwnode_handle *phy_node; + + /* Only phy-handle is used for ACPI */ + phy_node = fwnode_find_reference(fwnode, "phy-handle", 0); + if (is_acpi_node(fwnode) || !IS_ERR(phy_node)) + return phy_node; + phy_node = fwnode_find_reference(fwnode, "phy", 0); + if (IS_ERR(phy_node)) + phy_node = fwnode_find_reference(fwnode, "phy-device", 0); + return phy_node; +} +EXPORT_SYMBOL_GPL(fwnode_get_phy_node); + /** * phy_probe - probe and init a PHY device * @dev: device to probe and init diff --git a/include/linux/phy.h b/include/linux/phy.h index 7aa97f4e5387..f9b5fb099fa6 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -1378,6 +1378,9 @@ struct phy_device *phy_device_create(struct mii_bus *bus, int addr, u32 phy_id, struct phy_c45_device_ids *c45_ids); #if IS_ENABLED(CONFIG_PHYLIB) struct mdio_device *fwnode_mdio_find_device(struct fwnode_handle *fwnode); +struct phy_device *fwnode_phy_find_device(struct fwnode_handle *phy_fwnode); +struct phy_device *device_phy_find_device(struct device *dev); +struct fwnode_handle *fwnode_get_phy_node(struct fwnode_handle *fwnode); struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45); int phy_device_register(struct phy_device *phy); void phy_device_free(struct phy_device *phydev); @@ -1388,6 +1391,23 @@ struct mdio_device *fwnode_mdio_find_device(struct fwnode_handle *fwnode) return 0; } +static inline +struct phy_device *fwnode_phy_find_device(struct fwnode_handle *phy_fwnode) +{ + return NULL; +} + +static inline struct phy_device *device_phy_find_device(struct device *dev) +{ + return NULL; +} + +static inline +struct fwnode_handle *fwnode_get_phy_node(struct fwnode_handle *fwnode) +{ + return NULL; +} + static inline struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45) {