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=-16.7 required=3.0 tests=BAYES_00, 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 E8B9CC433FE for ; Fri, 11 Dec 2020 01:26:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9E5AC23DE5 for ; Fri, 11 Dec 2020 01:26:32 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2394923AbgLKBYH (ORCPT ); Thu, 10 Dec 2020 20:24:07 -0500 Received: from foss.arm.com ([217.140.110.172]:49800 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2394745AbgLKBVf (ORCPT ); Thu, 10 Dec 2020 20:21:35 -0500 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 359DE147A; Thu, 10 Dec 2020 17:20:18 -0800 (PST) Received: from localhost.localdomain (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 3A3223F66B; Thu, 10 Dec 2020 17:20:16 -0800 (PST) From: Andre Przywara To: Maxime Ripard , Chen-Yu Tsai , Jernej Skrabec Cc: Icenowy Zheng , Linus Walleij , Rob Herring , =?UTF-8?q?Cl=C3=A9ment=20P=C3=A9ron?= , Shuosheng Huang , Yangtao Li , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com, Lee Jones Subject: [PATCH v2 10/21] mfd: axp20x: Allow AXP chips without interrupt lines Date: Fri, 11 Dec 2020 01:19:23 +0000 Message-Id: <20201211011934.6171-11-andre.przywara@arm.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20201211011934.6171-1-andre.przywara@arm.com> References: <20201211011934.6171-1-andre.przywara@arm.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.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, so the interrupt functionality of the AXP chip is simply not available. Check whether the DT describes the AXP chip as an interrupt controller before trying to register the irqchip, to avoid probe failures on setups without an interrupt. 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 aa59496e4376..a52595c49d40 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; + if (!axp20x->dev->of_node || + of_property_read_bool(axp20x->dev->of_node, "interrupt-controller")) { + 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