From nobody Wed Jul 1 16:49:51 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 49F45C4167D for ; Sat, 18 Dec 2021 16:53:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233671AbhLRQxL (ORCPT ); Sat, 18 Dec 2021 11:53:11 -0500 Received: from relmlor1.renesas.com ([210.160.252.171]:52190 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S229552AbhLRQxJ (ORCPT ); Sat, 18 Dec 2021 11:53:09 -0500 X-IronPort-AV: E=Sophos;i="5.88,216,1635174000"; d="scan'208";a="103929842" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 19 Dec 2021 01:53:08 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 73CE540A5168; Sun, 19 Dec 2021 01:53:05 +0900 (JST) From: Lad Prabhakar To: Rob Herring , Nicolas Saenz Julienne , Florian Fainelli , Ray Jui , Scott Branden , bcm-kernel-feedback-list@broadcom.com, Chris Brandt , Wolfram Sang Cc: linux-i2c@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Prabhakar , Lad Prabhakar Subject: [PATCH 1/3] i2c: bcm2835: Use platform_get_irq() to get the interrupt Date: Sat, 18 Dec 2021 16:52:56 +0000 Message-Id: <20211218165258.16716-2-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211218165258.16716-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20211218165258.16716-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static allocation of IRQ resources in DT core code, this causes an issue when using hierarchical interrupt domains using "interrupts" property in the node as this bypasses the hierarchical setup and messes up the irq chaining. In preparation for removal of static setup of IRQ resource from DT core code use platform_get_irq(). Signed-off-by: Lad Prabhakar --- drivers/i2c/busses/i2c-bcm2835.c | 11 ++++------- 1 file changed, 4 insertions(+), 7 deletions(-) diff --git a/drivers/i2c/busses/i2c-bcm2835.c b/drivers/i2c/busses/i2c-bcm2= 835.c index 37443edbf754..d63dec5f3cb1 100644 --- a/drivers/i2c/busses/i2c-bcm2835.c +++ b/drivers/i2c/busses/i2c-bcm2835.c @@ -402,7 +402,7 @@ static const struct i2c_adapter_quirks bcm2835_i2c_quir= ks =3D { static int bcm2835_i2c_probe(struct platform_device *pdev) { struct bcm2835_i2c_dev *i2c_dev; - struct resource *mem, *irq; + struct resource *mem; int ret; struct i2c_adapter *adap; struct clk *mclk; @@ -452,12 +452,9 @@ static int bcm2835_i2c_probe(struct platform_device *p= dev) return ret; } =20 - irq =3D platform_get_resource(pdev, IORESOURCE_IRQ, 0); - if (!irq) { - dev_err(&pdev->dev, "No IRQ resource\n"); - return -ENODEV; - } - i2c_dev->irq =3D irq->start; + i2c_dev->irq =3D platform_get_irq(pdev, 0); + if (i2c_dev->irq <=3D 0) + return i2c_dev->irq ? i2c_dev->irq : -ENXIO; =20 ret =3D request_irq(i2c_dev->irq, bcm2835_i2c_isr, IRQF_SHARED, dev_name(&pdev->dev), i2c_dev); --=20 2.17.1 From nobody Wed Jul 1 16:49:51 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 476A8C4332F for ; Sat, 18 Dec 2021 16:53:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233680AbhLRQxP (ORCPT ); Sat, 18 Dec 2021 11:53:15 -0500 Received: from relmlor2.renesas.com ([210.160.252.172]:49487 "EHLO relmlie6.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S233679AbhLRQxM (ORCPT ); Sat, 18 Dec 2021 11:53:12 -0500 X-IronPort-AV: E=Sophos;i="5.88,216,1635174000"; d="scan'208";a="104388672" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 19 Dec 2021 01:53:11 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id C144940A560F; Sun, 19 Dec 2021 01:53:08 +0900 (JST) From: Lad Prabhakar To: Rob Herring , Nicolas Saenz Julienne , Florian Fainelli , Ray Jui , Scott Branden , bcm-kernel-feedback-list@broadcom.com, Chris Brandt , Wolfram Sang Cc: linux-i2c@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Prabhakar , Lad Prabhakar Subject: [PATCH 2/3] i2c: sh_mobile: Use platform_get_irq_optional() to get the interrupt Date: Sat, 18 Dec 2021 16:52:57 +0000 Message-Id: <20211218165258.16716-3-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211218165258.16716-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20211218165258.16716-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static allocation of IRQ resources in DT core code, this causes an issue when using hierarchical interrupt domains using "interrupts" property in the node as this bypasses the hierarchical setup and messes up the irq chaining. In preparation for removal of static setup of IRQ resource from DT core code use platform_get_irq_optional() for DT users only. Signed-off-by: Lad Prabhakar --- drivers/i2c/busses/i2c-sh_mobile.c | 39 +++++++++++++++++++++++------- 1 file changed, 30 insertions(+), 9 deletions(-) diff --git a/drivers/i2c/busses/i2c-sh_mobile.c b/drivers/i2c/busses/i2c-sh= _mobile.c index 7b8caf172851..d887f351f53c 100644 --- a/drivers/i2c/busses/i2c-sh_mobile.c +++ b/drivers/i2c/busses/i2c-sh_mobile.c @@ -830,20 +830,41 @@ static void sh_mobile_i2c_release_dma(struct sh_mobil= e_i2c_data *pd) =20 static int sh_mobile_i2c_hook_irqs(struct platform_device *dev, struct sh_= mobile_i2c_data *pd) { - struct resource *res; - resource_size_t n; + struct device_node *np =3D dev_of_node(&dev->dev); int k =3D 0, ret; =20 - while ((res =3D platform_get_resource(dev, IORESOURCE_IRQ, k))) { - for (n =3D res->start; n <=3D res->end; n++) { - ret =3D devm_request_irq(&dev->dev, n, sh_mobile_i2c_isr, - 0, dev_name(&dev->dev), pd); + if (!np) { + struct resource *res; + resource_size_t n; + + while ((res =3D platform_get_resource(dev, IORESOURCE_IRQ, k))) { + for (n =3D res->start; n <=3D res->end; n++) { + ret =3D devm_request_irq(&dev->dev, n, sh_mobile_i2c_isr, + 0, dev_name(&dev->dev), pd); + if (ret) { + dev_err(&dev->dev, "cannot request IRQ %pa\n", &n); + return ret; + } + } + k++; + } + } else { + int irq; + + do { + irq =3D platform_get_irq_optional(dev, k); + if (irq <=3D 0 && irq !=3D -ENXIO) + return irq ? irq : -ENXIO; + if (irq =3D=3D -ENXIO) + break; + ret =3D devm_request_irq(&dev->dev, irq, sh_mobile_i2c_isr, + 0, dev_name(&dev->dev), pd); if (ret) { - dev_err(&dev->dev, "cannot request IRQ %pa\n", &n); + dev_err(&dev->dev, "cannot request IRQ %d\n", irq); return ret; } - } - k++; + k++; + } while (irq); } =20 return k > 0 ? 0 : -ENOENT; --=20 2.17.1 From nobody Wed Jul 1 16:49:51 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 DACF7C43217 for ; Sat, 18 Dec 2021 16:53:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233689AbhLRQxR (ORCPT ); Sat, 18 Dec 2021 11:53:17 -0500 Received: from relmlor2.renesas.com ([210.160.252.172]:49487 "EHLO relmlie6.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S233678AbhLRQxP (ORCPT ); Sat, 18 Dec 2021 11:53:15 -0500 X-IronPort-AV: E=Sophos;i="5.88,216,1635174000"; d="scan'208";a="104388682" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 19 Dec 2021 01:53:15 +0900 Received: from localhost.localdomain (unknown [10.226.36.204]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 1D25F40A5168; Sun, 19 Dec 2021 01:53:11 +0900 (JST) From: Lad Prabhakar To: Rob Herring , Nicolas Saenz Julienne , Florian Fainelli , Ray Jui , Scott Branden , bcm-kernel-feedback-list@broadcom.com, Chris Brandt , Wolfram Sang Cc: linux-i2c@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Prabhakar , Lad Prabhakar Subject: [PATCH 3/3] i2c: riic: Use platform_get_irq() to get the interrupt Date: Sat, 18 Dec 2021 16:52:58 +0000 Message-Id: <20211218165258.16716-4-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211218165258.16716-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20211218165258.16716-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static allocation of IRQ resources in DT core code, this causes an issue when using hierarchical interrupt domains using "interrupts" property in the node as this bypasses the hierarchical setup and messes up the irq chaining. In preparation for removal of static setup of IRQ resource from DT core code use platform_get_irq(). Signed-off-by: Lad Prabhakar Reviewed-by: Geert Uytterhoeven --- drivers/i2c/busses/i2c-riic.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) diff --git a/drivers/i2c/busses/i2c-riic.c b/drivers/i2c/busses/i2c-riic.c index 78b84445ee6a..f18b9fe86d4b 100644 --- a/drivers/i2c/busses/i2c-riic.c +++ b/drivers/i2c/busses/i2c-riic.c @@ -433,12 +433,12 @@ static int riic_i2c_probe(struct platform_device *pde= v) } =20 for (i =3D 0; i < ARRAY_SIZE(riic_irqs); i++) { - res =3D platform_get_resource(pdev, IORESOURCE_IRQ, riic_irqs[i].res_num= ); - if (!res) - return -ENODEV; + ret =3D platform_get_irq(pdev, riic_irqs[i].res_num); + if (ret <=3D 0) + return ret ? ret : -ENXIO; =20 - ret =3D devm_request_irq(&pdev->dev, res->start, riic_irqs[i].isr, - 0, riic_irqs[i].name, riic); + ret =3D devm_request_irq(&pdev->dev, ret, riic_irqs[i].isr, + 0, riic_irqs[i].name, riic); if (ret) { dev_err(&pdev->dev, "failed to request irq %s\n", riic_irqs[i].name); return ret; --=20 2.17.1