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=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 0E701C49ED6 for ; Wed, 11 Sep 2019 09:56:19 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 D59E720CC7 for ; Wed, 11 Sep 2019 09:56:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Za9h8vo+" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D59E720CC7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-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=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id: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:In-Reply-To: References:List-Owner; bh=dCt2vQERDvx4tteVasxpla9254Bx2ZTq4fU2SChzWQ8=; b=Za9 h8vo+kGXB3g5W37DrD9DXxQUgrZIcAPEYr8i40Fb/mHQDH+9umsCheo8dpgSoYdx2Q4ZbDAuUNiEG 7XXEE5kJnEr/8MjYfJq+VB+PPkN67MtM6tpmlg6BGKe3W1jfyhSVygMDp+THCRpSJTB6flagA1Up4 ePYMfccPAUr+/y0uRsqE+MSnn/wH3G67vqy63nxIyJyMejJfL0kK/wwhuzAn1SC2prOLzRic+ktl5 YDP026UIT1LCEj81q0zn3scfOWtboWnnYmzVu7mIyp9FExkDJv5i1vOCqGlotqhMJ0E65mrBE994d BXLYMZIAYo7R0WmFqMBIm2UCt7qWnwA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1i7zMD-0006b4-1l; Wed, 11 Sep 2019 09:56:13 +0000 Received: from inva020.nxp.com ([92.121.34.13]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1i7zM9-0006aC-NS for linux-arm-kernel@lists.infradead.org; Wed, 11 Sep 2019 09:56:11 +0000 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 71F7E1A0572; Wed, 11 Sep 2019 11:56:05 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 62FC31A0596; Wed, 11 Sep 2019 11:56:00 +0200 (CEST) Received: from titan.ap.freescale.net (TITAN.ap.freescale.net [10.192.208.233]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id E453A402AE; Wed, 11 Sep 2019 17:55:53 +0800 (SGT) From: Hui Song To: Shawn Guo , Li Yang , Rob Herring , Mark Rutland , Linus Walleij , Bartosz Golaszewski Subject: [PATCH] gpio/mpc8xxx: change irq handler from chained to normal Date: Wed, 11 Sep 2019 17:45:44 +0800 Message-Id: <20190911094544.15893-1-hui.song_1@nxp.com> X-Mailer: git-send-email 2.9.5 X-Virus-Scanned: ClamAV using ClamSMTP X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190911_025609_907881_66583E62 X-CRM114-Status: GOOD ( 11.34 ) 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: devicetree@vger.kernel.org, Song Hui , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org 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+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Song Hui More than one gpio controllers can share one interrupt, change the driver to request shared irq. Signed-off-by: Laurentiu Tudor Signed-off-by: Alex Marginean Signed-off-by: Song Hui --- Changes in v4: - convert 'pr_err' to 'dev_err'. Changes in v3: - update the patch description. Changes in v2: - delete the compatible of ls1088a. drivers/gpio/gpio-mpc8xxx.c | 22 ++++++++++++++-------- 1 file changed, 14 insertions(+), 8 deletions(-) diff --git a/drivers/gpio/gpio-mpc8xxx.c b/drivers/gpio/gpio-mpc8xxx.c index 16a47de..e16591b 100644 --- a/drivers/gpio/gpio-mpc8xxx.c +++ b/drivers/gpio/gpio-mpc8xxx.c @@ -22,6 +22,7 @@ #include #include #include +#include #define MPC8XXX_GPIO_PINS 32 @@ -127,10 +128,9 @@ static int mpc8xxx_gpio_to_irq(struct gpio_chip *gc, unsigned offset) return -ENXIO; } -static void mpc8xxx_gpio_irq_cascade(struct irq_desc *desc) +static irqreturn_t mpc8xxx_gpio_irq_cascade(int irq, void *data) { - struct mpc8xxx_gpio_chip *mpc8xxx_gc = irq_desc_get_handler_data(desc); - struct irq_chip *chip = irq_desc_get_chip(desc); + struct mpc8xxx_gpio_chip *mpc8xxx_gc = (struct mpc8xxx_gpio_chip *)data; struct gpio_chip *gc = &mpc8xxx_gc->gc; unsigned int mask; @@ -139,8 +139,8 @@ static void mpc8xxx_gpio_irq_cascade(struct irq_desc *desc) if (mask) generic_handle_irq(irq_linear_revmap(mpc8xxx_gc->irq, 32 - ffs(mask))); - if (chip->irq_eoi) - chip->irq_eoi(&desc->irq_data); + + return IRQ_HANDLED; } static void mpc8xxx_irq_unmask(struct irq_data *d) @@ -388,7 +388,7 @@ static int mpc8xxx_probe(struct platform_device *pdev) ret = gpiochip_add_data(gc, mpc8xxx_gc); if (ret) { - pr_err("%pOF: GPIO chip registration failed with status %d\n", + dev_err("%pOF: GPIO chip registration failed with status %d\n", np, ret); goto err; } @@ -409,8 +409,14 @@ static int mpc8xxx_probe(struct platform_device *pdev) if (devtype->gpio_dir_in_init) devtype->gpio_dir_in_init(gc); - irq_set_chained_handler_and_data(mpc8xxx_gc->irqn, - mpc8xxx_gpio_irq_cascade, mpc8xxx_gc); + ret = request_irq(mpc8xxx_gc->irqn, mpc8xxx_gpio_irq_cascade, + IRQF_NO_THREAD | IRQF_SHARED, "gpio-cascade", mpc8xxx_gc); + if (ret) { + dev_err("%s: failed to request_irq(%d), ret = %d\n", + np->full_name, mpc8xxx_gc->irqn, ret); + goto err; + } + return 0; err: iounmap(mpc8xxx_gc->regs); -- 2.9.5 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel