From patchwork Mon Apr 29 13:12:06 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ard Biesheuvel X-Patchwork-Id: 1092618 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=linux-gpio-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=linaro.org Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=linaro.org header.i=@linaro.org header.b="ElwC/dqy"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 44t4nb4Fxfz9s3l for ; Mon, 29 Apr 2019 23:12:19 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726401AbfD2NMT (ORCPT ); Mon, 29 Apr 2019 09:12:19 -0400 Received: from mail-wr1-f66.google.com ([209.85.221.66]:40404 "EHLO mail-wr1-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726403AbfD2NMS (ORCPT ); Mon, 29 Apr 2019 09:12:18 -0400 Received: by mail-wr1-f66.google.com with SMTP id h4so15978553wre.7 for ; Mon, 29 Apr 2019 06:12:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=LflG0JOcbN8VcRqNOvuJxlldgCtsVbbH4h32KwiCqss=; b=ElwC/dqyvPGkd7e4295vczNFShOirzGuBqdcY0+km+H5WkenpoB7C4k4h9TYj6Ak1D RWL/xEmSkeCmKYBXiSL0WLzeOy4M7otJdu9ogPADkHyARgiuArqGpY5gkcYUAPOALtLF j6VaYECxgPkQmOv1TnNU4v9DH0UaSQ3ARXKhBWY5RPyBzw8spXWuksnol/xZWpe/sMn+ +O5AeEc3sWJS/Syv+gDpLOBOrNFCRXRp9tHhKaAQE1SXfsZ5otjL985N0wwA3wxLpe3I wjlgFMNyQ7r7VcwTUecaBbDbq3NNFRivwhM/pUAfPSvl0tf+tpkQRCq/I+2ERcqGUPnt o71g== 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=LflG0JOcbN8VcRqNOvuJxlldgCtsVbbH4h32KwiCqss=; b=cZH5Q0qH+N6LcnxqRN2nv5M1pUQu301YUDqeP3VW1UciHDXjel2cwy28uXUlmBX7Hi +6N25mAkI7a1hkkIaswv7fe76YN72WPmItyipnYrV6x/+YrLKwDCgatOa1CepntZG05U xyneDz/zUpjcacL2KV1gcDD1TS+hqtywmjAzE93jT//KNIyTaZAUa+zqJU0R6/bZREUZ 6stbN4S+2WgEOq07UO4Ewee0WvEMVIJ3seMehgMIuaMN4coYFUBXK0XcZTKarItXxwTm 79NyZRce02z94ePMXsfkg4bdjro+QzlH6Ags6yolSwl69RdHpIW3PAWRxbD7hjP0c6bA GTAg== X-Gm-Message-State: APjAAAXkx0pYHi1ZVANKE+96MswnmwpA40oyAUY7QLdLBbQcixQK6WKl lPdLh+VmyX8/Xeb88/JWwbJFdpJOFBlDfw== X-Google-Smtp-Source: APXvYqxZRciGKidEMatOjeaVtXcFEliHDCDCxz2u62O6w/9skVAzOgp9b9xr6SoZkrJE31gTiz9QpA== X-Received: by 2002:a05:6000:12c1:: with SMTP id l1mr4895866wrx.152.1556543536105; Mon, 29 Apr 2019 06:12:16 -0700 (PDT) Received: from sudo.home ([2a01:cb1d:112:6f00:f9fc:88:6502:8fa7]) by smtp.gmail.com with ESMTPSA id s16sm5410282wrg.71.2019.04.29.06.12.13 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 29 Apr 2019 06:12:15 -0700 (PDT) From: Ard Biesheuvel To: linux-gpio@vger.kernel.org Cc: linux-acpi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Ard Biesheuvel , Masahisa Kojima , Linus Walleij , Marc Zyngier , Graeme Gregory , Lorenzo Pieralisi , Mika Westerberg , "Rafael J. Wysocki" , Len Brown Subject: [PATCH v2 2/4] irqchip/exiu: preparatory refactor for ACPI support Date: Mon, 29 Apr 2019 15:12:06 +0200 Message-Id: <20190429131208.3620-3-ard.biesheuvel@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190429131208.3620-1-ard.biesheuvel@linaro.org> References: <20190429131208.3620-1-ard.biesheuvel@linaro.org> MIME-Version: 1.0 Sender: linux-gpio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org In preparation of adding support for EXIU controller devices described via ACPI, split the DT init function in a DT specific and a generic part, where the latter will be reused for ACPI support later. Signed-off-by: Ard Biesheuvel --- drivers/irqchip/irq-sni-exiu.c | 77 ++++++++++++-------- 1 file changed, 48 insertions(+), 29 deletions(-) diff --git a/drivers/irqchip/irq-sni-exiu.c b/drivers/irqchip/irq-sni-exiu.c index 1927b2f36ff6..52ce662334d4 100644 --- a/drivers/irqchip/irq-sni-exiu.c +++ b/drivers/irqchip/irq-sni-exiu.c @@ -1,7 +1,7 @@ /* * Driver for Socionext External Interrupt Unit (EXIU) * - * Copyright (c) 2017 Linaro, Ltd. + * Copyright (c) 2017-2019 Linaro, Ltd. * * Based on irq-tegra.c: * Copyright (C) 2011 Google, Inc. @@ -167,35 +167,25 @@ static const struct irq_domain_ops exiu_domain_ops = { .free = irq_domain_free_irqs_common, }; -static int __init exiu_init(struct device_node *node, - struct device_node *parent) +static struct irq_domain *exiu_init(struct irq_domain *parent_domain, + struct fwnode_handle *fwnode, + struct resource *res) { - struct irq_domain *parent_domain, *domain; + struct irq_domain *domain; struct exiu_irq_data *data; int err; - if (!parent) { - pr_err("%pOF: no parent, giving up\n", node); - return -ENODEV; - } - - parent_domain = irq_find_host(parent); - if (!parent_domain) { - pr_err("%pOF: unable to obtain parent domain\n", node); - return -ENXIO; - } - data = kzalloc(sizeof(*data), GFP_KERNEL); if (!data) - return -ENOMEM; + return ERR_PTR(-ENOMEM); - if (of_property_read_u32(node, "socionext,spi-base", &data->spi_base)) { - pr_err("%pOF: failed to parse 'spi-base' property\n", node); + if (fwnode_property_read_u32_array(fwnode, "socionext,spi-base", + &data->spi_base, 1)) { err = -ENODEV; goto out_free; } - data->base = of_iomap(node, 0); + data->base = ioremap(res->start, resource_size(res)); if (!data->base) { err = -ENODEV; goto out_free; @@ -205,23 +195,52 @@ static int __init exiu_init(struct device_node *node, writel_relaxed(0xFFFFFFFF, data->base + EIREQCLR); writel_relaxed(0xFFFFFFFF, data->base + EIMASK); - domain = irq_domain_add_hierarchy(parent_domain, 0, NUM_IRQS, node, - &exiu_domain_ops, data); + domain = irq_domain_create_hierarchy(parent_domain, 0, NUM_IRQS, + fwnode, &exiu_domain_ops, data); if (!domain) { - pr_err("%pOF: failed to allocate domain\n", node); err = -ENOMEM; goto out_unmap; } + return domain; +out_unmap: + iounmap(data->base); +out_free: + kfree(data); + return ERR_PTR(err); +} + +static int __init exiu_dt_init(struct device_node *node, + struct device_node *parent) +{ + struct irq_domain *parent_domain, *domain; + struct resource res; + + if (!parent) { + pr_err("%pOF: no parent, giving up\n", node); + return -ENODEV; + } + + parent_domain = irq_find_host(parent); + if (!parent_domain) { + pr_err("%pOF: unable to obtain parent domain\n", node); + return -ENXIO; + } + + if (of_address_to_resource(node, 0, &res)) { + pr_err("%pOF: failed to parse memory resource\n", node); + return -ENXIO; + } + + domain = exiu_init(parent_domain, of_node_to_fwnode(node), &res); + if (IS_ERR(domain)) { + pr_err("%pOF: failed to create IRQ domain (%ld)\n", node, + PTR_ERR(domain)); + return PTR_ERR(domain); + } pr_info("%pOF: %d interrupts forwarded to %pOF\n", node, NUM_IRQS, parent); return 0; - -out_unmap: - iounmap(data->base); -out_free: - kfree(data); - return err; } -IRQCHIP_DECLARE(exiu, "socionext,synquacer-exiu", exiu_init); +IRQCHIP_DECLARE(exiu, "socionext,synquacer-exiu", exiu_dt_init);