From patchwork Sat Sep 19 21:49:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Marangi X-Patchwork-Id: 260551 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=-12.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 5D037C433DB for ; Sat, 19 Sep 2020 21:50:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1A0782311D for ; Sat, 19 Sep 2020 21:50:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="KlCSprJF" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726779AbgISVuK (ORCPT ); Sat, 19 Sep 2020 17:50:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35580 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726638AbgISVuJ (ORCPT ); Sat, 19 Sep 2020 17:50:09 -0400 Received: from mail-qv1-xf44.google.com (mail-qv1-xf44.google.com [IPv6:2607:f8b0:4864:20::f44]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C4739C0613CE; Sat, 19 Sep 2020 14:50:09 -0700 (PDT) Received: by mail-qv1-xf44.google.com with SMTP id j10so5147400qvk.11; Sat, 19 Sep 2020 14:50:09 -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=hyRAlrt8J6BGlNyQOPrEJ5kGgAcwiPINvnfltt15A0M=; b=KlCSprJFAYfexEQg5FWirXfcWfQ7Dssd4Z5GWMsER+Erc+tZ4xAmd3Z++pS6A7Ogjo zG7k8aef9k1RxhUgu+PWGFEHevbbzGItxaJXRnasSqPxiE2LI7Ox3iRbxChBk3i7K0nK wyC111ojbfSdw3lIshtIpzFzU4lq2cqijwLtT/HuE8wVJJaWxYIu0rZFGVNtbyS4mlK2 VRX5yidQC9OS/PuV7njjiX3TvO+n4bD3SN274PCIQS9Q4Us1yksgKqm9+tkmGg9hxfFQ tBBPMqpGRzUR4jK8Wpc+rpnOEpxhddr2Y0j+vUVTG6PjSbWFCVGSNJbV1CJ/2jfAAwIU W+YQ== 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=hyRAlrt8J6BGlNyQOPrEJ5kGgAcwiPINvnfltt15A0M=; b=PqqBGLA3lS+Dt495s1+wN/sU5axPGnisWLwlFSauQ9O7k7nOVPMZH3n5VCXK9F/VfQ mKuHNQt9cXnwWsbhs5CoQkYhsmMO6FlYjw8SxpBfBR3rcKccMhm16SDfBrDmZmOkWAgB 6ubhn+jtMW+eH5hgZp9qhPGtJwlzgRA5YgZsIdyiLYLIIgAcibmXIfNPxqnNHaGfFAO0 AU5rVE775aXfY8aJlSjq4QyeiXbgoGL8qPOoAMpZjwcM0oK/KN5pqQ0HaM64qfVOUK3b z+AeHF+EkruCEiSGsrG2iQVx6j6BBMA1t1y1L5ErLQ+ADol1XqvQQcvv4bKRIHSCYBr+ 5bCw== X-Gm-Message-State: AOAM531WDch4cLhRZwoicIIy9j1ECfgTfUXAvNiNl/KuXn/zpX+Uht/W QwoB02yBJbA5jiup8q7Ad5I= X-Google-Smtp-Source: ABdhPJzzXrVOQ6yFroXqTSfpgunJbma6nmp/ttKWAwgCKfrT4Ttp/rSZO7OEp7oKZvpP+UQUEcXFFQ== X-Received: by 2002:a05:6214:7a1:: with SMTP id v1mr40316823qvz.19.1600552208970; Sat, 19 Sep 2020 14:50:08 -0700 (PDT) Received: from Ansuel-XPS.localdomain (93-39-149-95.ip76.fastwebnet.it. [93.39.149.95]) by smtp.googlemail.com with ESMTPSA id y30sm5617173qth.7.2020.09.19.14.50.05 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 19 Sep 2020 14:50:08 -0700 (PDT) From: Ansuel Smith To: Miquel Raynal Cc: Ansuel Smith , Richard Weinberger , Vignesh Raghavendra , Rob Herring , "David S. Miller" , Jakub Kicinski , Andrew Lunn , Heiner Kallweit , Russell King , Frank Rowand , Boris Brezillon , linux-mtd@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH 1/4] mtd: Add nvmem support for mtd nvmem-providers Date: Sat, 19 Sep 2020 23:49:35 +0200 Message-Id: <20200919214941.8038-2-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200919214941.8038-1-ansuelsmth@gmail.com> References: <20200919214941.8038-1-ansuelsmth@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Introduce 2 new bindings for the mtd structure. Mtd partitions can be set as 'nvmem-provider' and any subpartition defined with the tag 'nvmem-cell' are skipped by the 'fixed-partitions' parser and registred as a nvmem cell by the nvmem api. Signed-off-by: Ansuel Smith --- drivers/mtd/mtdcore.c | 2 +- drivers/mtd/parsers/ofpart.c | 8 ++++++++ 2 files changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 7d930569a7df..72502c990007 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -563,7 +563,7 @@ static int mtd_nvmem_add(struct mtd_info *mtd) config.stride = 1; config.read_only = true; config.root_only = true; - config.no_of_node = true; + config.no_of_node = !of_property_read_bool(mtd_node, "nvmem-provider"); config.priv = mtd; mtd->nvmem = nvmem_register(&config); diff --git a/drivers/mtd/parsers/ofpart.c b/drivers/mtd/parsers/ofpart.c index daf507c123e6..442e039214bc 100644 --- a/drivers/mtd/parsers/ofpart.c +++ b/drivers/mtd/parsers/ofpart.c @@ -61,6 +61,10 @@ static int parse_fixed_partitions(struct mtd_info *master, if (!dedicated && node_has_compatible(pp)) continue; + /* skip adding if a nvmem-cell is detected */ + if (of_property_read_bool(pp, "nvmem-cell")) + continue; + nr_parts++; } @@ -80,6 +84,10 @@ static int parse_fixed_partitions(struct mtd_info *master, if (!dedicated && node_has_compatible(pp)) continue; + /* skip adding if a nvmem-cell is detected */ + if (of_property_read_bool(pp, "nvmem-cell")) + continue; + reg = of_get_property(pp, "reg", &len); if (!reg) { if (dedicated) { From patchwork Sat Sep 19 21:49:37 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christian Marangi X-Patchwork-Id: 260550 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=-12.6 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 8F6B1C43464 for ; Sat, 19 Sep 2020 21:50:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 52570222BB for ; Sat, 19 Sep 2020 21:50:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="U8LI48rR" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726814AbgISVuZ (ORCPT ); Sat, 19 Sep 2020 17:50:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35616 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726617AbgISVuW (ORCPT ); Sat, 19 Sep 2020 17:50:22 -0400 Received: from mail-qt1-x841.google.com (mail-qt1-x841.google.com [IPv6:2607:f8b0:4864:20::841]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 685FDC0613CE; Sat, 19 Sep 2020 14:50:22 -0700 (PDT) Received: by mail-qt1-x841.google.com with SMTP id r8so8733932qtp.13; Sat, 19 Sep 2020 14:50:22 -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=k1VC0bLlr113eP4lGbVnwgieBOJkCTeFf8AM/n1gCow=; b=U8LI48rRoQ0BNaq/0glBW062pD8MZrTYTvy/3foXyL5w6WWpdS8j36wgieP+aBXniL urWZgZH3PVZR2BShpIPxK5/ikPx0+Ej+jyU8kdAuQ72un7OSmp213kFpS8quMPAfXb08 LbkcpXe4OghpMl7cB8OrZnIWKXfawwSwK4VYoWx0Kzz491nhd93wTxsYS7lxsqPkXI5r 9fJRCzHtWOF4WsK+0bd1g8R2ry3BCupcE9ss4h2u0z5lG5SrVTEHQQI3iQNKu7CrH4FD snCSzkIBxlN5zNnlM+Jyz21zERoOf1jmXFd/fDpPiJkRI8gAlHmYQ6R1ha3EgILMa+8a q+Pw== 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=k1VC0bLlr113eP4lGbVnwgieBOJkCTeFf8AM/n1gCow=; b=Rl89glsdd6cq6BBThMkEZmjED5+N2N0z/KSFcEkJLgJ6Ni9bfSZxwGZVfxXqoxpQUR suloSoWRHmiAkGs1DkWP4TjW5WWH+Onuhpjfv+1Bnd0ZTQmVFEGtAwfA/Wmpw/r94Xoz fpk+fcKo3/RPCqj6n/d2pFEtjKVGBiE1+tLQfmBB/bIjh+SwXpoSL8wXJZYayMv+Ah3G pusZL81jDzTJqD9XfjppdZBCZ14vtnmV8Ec8z9u4d55l6QHbgikB8j3QPnixcdIflYnG HnOI3ZxAUFN8hNJKCI7zpzPu6xtT1tiMPHQBvVUTVyp1fBXctXX9GD0qhwM61rvpGbys VSpw== X-Gm-Message-State: AOAM531dKSx8utuXG7WkO8sp5FYhfy3EMvBw4gdKA2ypi3e7w2Nv0wCw 39YqcyD4X8l9O4hSuCpQ/vk= X-Google-Smtp-Source: ABdhPJyYjOvZzcZByFP1j9EZs5L9ROCR3emit/oZDgW1eNjXNxKNUpXLU6/l5dj2ZVgUKNJecB8YXA== X-Received: by 2002:ac8:7b95:: with SMTP id p21mr38680074qtu.139.1600552221500; Sat, 19 Sep 2020 14:50:21 -0700 (PDT) Received: from Ansuel-XPS.localdomain (93-39-149-95.ip76.fastwebnet.it. [93.39.149.95]) by smtp.googlemail.com with ESMTPSA id y30sm5617173qth.7.2020.09.19.14.50.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 19 Sep 2020 14:50:20 -0700 (PDT) From: Ansuel Smith To: Miquel Raynal Cc: Ansuel Smith , Richard Weinberger , Vignesh Raghavendra , Rob Herring , "David S. Miller" , Jakub Kicinski , Andrew Lunn , Heiner Kallweit , Russell King , Frank Rowand , Boris Brezillon , linux-mtd@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH 3/4] of_net: add mac-address-increment support Date: Sat, 19 Sep 2020 23:49:37 +0200 Message-Id: <20200919214941.8038-4-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20200919214941.8038-1-ansuelsmth@gmail.com> References: <20200919214941.8038-1-ansuelsmth@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Lots of embedded devices use the mac-address of other interface extracted from nvmem cells and increments it by one or two. Add two bindings to integrate this and directly use the right mac-address for the interface. Some example are some routers that use the gmac mac-address stored in the art partition and increments it by one for the wifi. mac-address-increment-byte bindings is used to tell what byte of the mac-address has to be increased (if not defined the last byte is increased) and mac-address-increment tells how much the byte decided early has to be increased. Signed-off-by: Ansuel Smith --- drivers/of/of_net.c | 53 +++++++++++++++++++++++++++++++++++---------- 1 file changed, 41 insertions(+), 12 deletions(-) diff --git a/drivers/of/of_net.c b/drivers/of/of_net.c index 6e411821583e..171f5ea6f371 100644 --- a/drivers/of/of_net.c +++ b/drivers/of/of_net.c @@ -45,7 +45,7 @@ int of_get_phy_mode(struct device_node *np, phy_interface_t *interface) } EXPORT_SYMBOL_GPL(of_get_phy_mode); -static const void *of_get_mac_addr(struct device_node *np, const char *name) +static void *of_get_mac_addr(struct device_node *np, const char *name) { struct property *pp = of_find_property(np, name, NULL); @@ -54,26 +54,31 @@ static const void *of_get_mac_addr(struct device_node *np, const char *name) return NULL; } -static const void *of_get_mac_addr_nvmem(struct device_node *np) +static void *of_get_mac_addr_nvmem(struct device_node *np, int *err) { int ret; const void *mac; u8 nvmem_mac[ETH_ALEN]; struct platform_device *pdev = of_find_device_by_node(np); - if (!pdev) - return ERR_PTR(-ENODEV); + if (!pdev) { + *err = -ENODEV; + return NULL; + } ret = nvmem_get_mac_address(&pdev->dev, &nvmem_mac); if (ret) { put_device(&pdev->dev); - return ERR_PTR(ret); + *err = ret; + return NULL; } mac = devm_kmemdup(&pdev->dev, nvmem_mac, ETH_ALEN, GFP_KERNEL); put_device(&pdev->dev); - if (!mac) - return ERR_PTR(-ENOMEM); + if (!mac) { + *err = -ENOMEM; + return NULL; + } return mac; } @@ -98,24 +103,48 @@ static const void *of_get_mac_addr_nvmem(struct device_node *np) * this case, the real MAC is in 'local-mac-address', and 'mac-address' exists * but is all zeros. * + * DT can tell the system to increment the mac-address after is extracted by + * using: + * - mac-address-increment-byte to decide what byte to increase + * (if not defined is increased the last byte) + * - mac-address-increment to decide how much to increase + * * Return: Will be a valid pointer on success and ERR_PTR in case of error. */ const void *of_get_mac_address(struct device_node *np) { - const void *addr; + u32 inc_idx, mac_inc; + int ret = 0; + u8 *addr; + + /* Check first if the increment byte is present and valid. + * If not set assume to increment the last byte if found. + */ + if (of_property_read_u32(np, "mac-address-increment-byte", &inc_idx)) + inc_idx = 5; + if (inc_idx > 5) + return ERR_PTR(-EINVAL); addr = of_get_mac_addr(np, "mac-address"); if (addr) - return addr; + goto found; addr = of_get_mac_addr(np, "local-mac-address"); if (addr) - return addr; + goto found; addr = of_get_mac_addr(np, "address"); if (addr) - return addr; + goto found; + + addr = of_get_mac_addr_nvmem(np, &ret); + if (ret) + return ERR_PTR(ret); + +found: + if (!of_property_read_u32(np, "mac-address-increment", &mac_inc)) + addr[inc_idx] += mac_inc; - return of_get_mac_addr_nvmem(np); + return addr; } EXPORT_SYMBOL(of_get_mac_address);