From mboxrd@z Thu Jan 1 00:00:00 1970 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=-17.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham 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 911B5C433DB for ; Mon, 25 Jan 2021 15:21:42 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 5588522D50 for ; Mon, 25 Jan 2021 15:21:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5588522D50 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:MIME-Version:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:References:In-Reply-To:Message-Id:Date:Subject:To: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=5I7MoiVwE31D3thx/8j7J05nOWScd40y1AfxnIEmjS0=; b=MkISUAwuiBGmXG0MNDY+q9acGA W7oUuZXhCOBgAsROhVyG4jP1HJOA62+Anxcc7qu114uW4QvLyttHk2jhbVUGVGTBVqw2KFunDy8NW nEl+YtrJeYnBpQ2IHG6I6CGF2xW/x79BdDXAgnaQCqeFXfU4i1YGDqH4GdtB13eWsQJBz6ZogPpUD ptZzHDIQ1QSrITOvYfE0V0XHxMierGMF3FRvjJwE3hg7d/2VHIcbqTwkkSgjGkQz3W4FeXu6QTn7I +gTjmiIWRrFUEd9CC3xAup5NthLsjrFwLjhn/gK+TaogU3erkD97cv7yLbqvqOUWmy89bVSn0awhe zrM/ReIQ==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l43er-0000ko-Il; Mon, 25 Jan 2021 15:20:01 +0000 Received: from foss.arm.com ([217.140.110.172]) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1l43e8-0000UY-GY for linux-arm-kernel@lists.infradead.org; Mon, 25 Jan 2021 15:19:17 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id B4B211758; Mon, 25 Jan 2021 07:19:08 -0800 (PST) Received: from localhost.localdomain (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id CF74A3F68F; Mon, 25 Jan 2021 07:19:06 -0800 (PST) From: Andre Przywara To: Maxime Ripard , Chen-Yu Tsai Subject: [PATCH v4 06/21] mfd: axp20x: Allow AXP chips without interrupt lines Date: Mon, 25 Jan 2021 15:17:56 +0000 Message-Id: <20210125151811.11871-7-andre.przywara@arm.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20210125151811.11871-1-andre.przywara@arm.com> References: <20210125151811.11871-1-andre.przywara@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210125_101916_622821_E5048FB9 X-CRM114-Status: GOOD ( 15.56 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jernej Skrabec , Samuel Holland , Yangtao Li , linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com, =?UTF-8?q?Cl=C3=A9ment=20P=C3=A9ron?= , Shuosheng Huang , Lee Jones , linux-arm-kernel@lists.infradead.org, Icenowy Zheng MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Currently the AXP chip requires to have its IRQ line connected to some interrupt controller, and will fail probing when this is not the case. On a new Allwinner SoC (H616) there is no NMI pin anymore, and at least one board does not connect the AXP's IRQ pin to anything else, so the interrupt functionality of the AXP chip is simply not available. Check whether the interrupt line number returned by the platform code is valid, before trying to register the irqchip. If not, we skip this registration, to avoid the driver to bail out completely. Signed-off-by: Andre Przywara --- drivers/mfd/axp20x.c | 17 +++++++++++------ 1 file changed, 11 insertions(+), 6 deletions(-) diff --git a/drivers/mfd/axp20x.c b/drivers/mfd/axp20x.c index 3eae04e24ac8..00c163a1e20d 100644 --- a/drivers/mfd/axp20x.c +++ b/drivers/mfd/axp20x.c @@ -959,12 +959,17 @@ int axp20x_device_probe(struct axp20x_dev *axp20x) AXP806_REG_ADDR_EXT_ADDR_SLAVE_MODE); } - ret = regmap_add_irq_chip(axp20x->regmap, axp20x->irq, - IRQF_ONESHOT | IRQF_SHARED | axp20x->irq_flags, - -1, axp20x->regmap_irq_chip, &axp20x->regmap_irqc); - if (ret) { - dev_err(axp20x->dev, "failed to add irq chip: %d\n", ret); - return ret; + /* Only if there is an interrupt line connected towards the CPU. */ + if (axp20x->irq > 0) { + ret = regmap_add_irq_chip(axp20x->regmap, axp20x->irq, + IRQF_ONESHOT | IRQF_SHARED | axp20x->irq_flags, + -1, axp20x->regmap_irq_chip, + &axp20x->regmap_irqc); + if (ret) { + dev_err(axp20x->dev, "failed to add irq chip: %d\n", + ret); + return ret; + } } ret = mfd_add_devices(axp20x->dev, -1, axp20x->cells, -- 2.17.5 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel