From nobody Mon Feb 9 04:29:00 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3F848C001DC for ; Wed, 19 Jul 2023 11:36:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230168AbjGSLgM (ORCPT ); Wed, 19 Jul 2023 07:36:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53006 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230086AbjGSLgH (ORCPT ); Wed, 19 Jul 2023 07:36:07 -0400 Received: from mail-pf1-x42e.google.com (mail-pf1-x42e.google.com [IPv6:2607:f8b0:4864:20::42e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6832F170E for ; Wed, 19 Jul 2023 04:36:05 -0700 (PDT) Received: by mail-pf1-x42e.google.com with SMTP id d2e1a72fcca58-666edfc50deso508384b3a.0 for ; Wed, 19 Jul 2023 04:36:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1689766565; x=1690371365; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=ASJ6N1f2HtTSaai3pJY5ayecgWjGnn9m1BypIphubd8=; b=FNUJTTod8d8lkD0j2EWesqH3a2UI3TMHlDsCBF6GwyZAmOkXqcKEwV7u2/cVonYeiR LtQRO9edVmljFnQKOqJNIrd/xe/R1sZZY6PKCdm7l8CcXkLO6A6iBBF0RnhZVFiBd8mc GykZ3jM3Fzm8Ki7dKbZCksXdykfCpHEuNvd9ISOUhYa7AA9t5Ur7F+PhTagSyDzVY0YL nAdfgFdS9Plri5I+ku5NEbfrmRLqqU8vDErM99MLo9OJGBN1a6ecXpUCbScUtYV2Z8iD 3TfS7WUMdTk+iEHmSEo09Vbj5bGCfWrfXuGhWNZxFCOnVEWA+eQS0RnS2dZu9bj4BK1R CEKQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689766565; x=1690371365; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ASJ6N1f2HtTSaai3pJY5ayecgWjGnn9m1BypIphubd8=; b=QGI9/mKNPo/u8acCEcVzSm/+r5Q+0aELF+EuC+pdm9UQmBqHDn6lni+/38XucUBl7d WQXCOWIifyoYx8vHKgNvjstp2berfmOXKm/9QJui4+44Zjp8UoaoyUxtY81SoGjXQqcb WA1zNqBVgfSRa3S3ErKtfo3VFO685NYeIjrR250DTpB0jm3dF5QTCotIm3ah1DYvgLgQ KMgDdi2m5I9gJ2sDy21eBk7gxbUoCEJPwUIm754peeauQAVgoojzW6HanIkM7U+AwNv5 HVyB2LxU/SLwpRIMB0AUh5kpujHnhHnRXKkzGvHFj49qNLTvj3tiMgVfrurXAhSQ2ZBy TiNg== X-Gm-Message-State: ABy/qLZIC+BKzVJSgw7XTJndH7ReIVKcVgrXfrKXdvjbn19Au/4/FbhN HMJwc2JRN52/wyd27QLVxlJ8YA== X-Google-Smtp-Source: APBJJlEt5NjiDD+SV5jYFnNxnx7P2kahDiZ6mEz+7XT5lgFV80n26BTX/gkKnX0j6e8fR7eYiMB7uQ== X-Received: by 2002:a05:6a20:430f:b0:f0:50c4:4c43 with SMTP id h15-20020a056a20430f00b000f050c44c43mr2313038pzk.5.1689766564723; Wed, 19 Jul 2023 04:36:04 -0700 (PDT) Received: from anup-ubuntu-vm.localdomain ([171.76.86.130]) by smtp.gmail.com with ESMTPSA id j10-20020aa783ca000000b00669c99d05fasm3050408pfn.150.2023.07.19.04.35.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Jul 2023 04:36:04 -0700 (PDT) From: Anup Patel To: Palmer Dabbelt , Paul Walmsley , Thomas Gleixner , Marc Zyngier , Rob Herring , Krzysztof Kozlowski , Frank Rowand , Conor Dooley Cc: Atish Patra , Andrew Jones , Sunil V L , Saravana Kannan , Anup Patel , linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Anup Patel Subject: [PATCH v6 02/14] of: property: Add fw_devlink support for msi-parent Date: Wed, 19 Jul 2023 17:05:30 +0530 Message-Id: <20230719113542.2293295-3-apatel@ventanamicro.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230719113542.2293295-1-apatel@ventanamicro.com> References: <20230719113542.2293295-1-apatel@ventanamicro.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" This allows fw_devlink to create device links between consumers of a MSI and the supplier of the MSI. Signed-off-by: Anup Patel --- drivers/of/property.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/drivers/of/property.c b/drivers/of/property.c index ddc75cd50825..e4096b79a872 100644 --- a/drivers/of/property.c +++ b/drivers/of/property.c @@ -1325,6 +1325,37 @@ static struct device_node *parse_interrupts(struct d= evice_node *np, return of_irq_parse_one(np, index, &sup_args) ? NULL : sup_args.np; } =20 +static struct device_node *parse_msi_parent(struct device_node *np, + const char *prop_name, int index) +{ + struct of_phandle_args sup_args; + struct device_node *msi_np; + + if (!IS_ENABLED(CONFIG_OF_IRQ)) + return NULL; + + if (strcmp(prop_name, "msi-parent")) + return NULL; + + msi_np =3D of_parse_phandle(np, prop_name, 0); + if (msi_np) { + if (!of_property_read_bool(msi_np, "#msi-cells")) { + if (index) { + of_node_put(msi_np); + return NULL; + } + return msi_np; + } + of_node_put(msi_np); + } + + if (of_parse_phandle_with_args(np, prop_name, "#msi-cells", index, + &sup_args)) + return NULL; + + return sup_args.np; +} + static const struct supplier_bindings of_supplier_bindings[] =3D { { .parse_prop =3D parse_clocks, }, { .parse_prop =3D parse_interconnects, }, @@ -1359,6 +1390,7 @@ static const struct supplier_bindings of_supplier_bin= dings[] =3D { { .parse_prop =3D parse_regulators, }, { .parse_prop =3D parse_gpio, }, { .parse_prop =3D parse_gpios, }, + { .parse_prop =3D parse_msi_parent, }, {} }; =20 --=20 2.34.1