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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E9CA6C07E9D for ; Mon, 26 Sep 2022 11:59:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238784AbiIZL7c (ORCPT ); Mon, 26 Sep 2022 07:59:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34538 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238250AbiIZL4F (ORCPT ); Mon, 26 Sep 2022 07:56:05 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C46447963A; Mon, 26 Sep 2022 03:51:26 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 9104360A52; Mon, 26 Sep 2022 10:49:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9BC33C433C1; Mon, 26 Sep 2022 10:49:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1664189399; bh=QU8P21MuAyq1H6RBQVtU3ITuaSUzlij2SD4xr4QQmzU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=i+sprgtUEbhG+nCERIp1kWYPyS79bPQqBfJnubiL7mIbRMGCeqsalwHvEtVDJEysa D1xRsXRaUlbvK4oYgWMHSY5u7daUqwGtsiYpUlBc65kXbYO7sOorXY+/OL+bOFWOV7 yZq5QupZ6EHZsAH2NBJtrds2JqWLy1lr5a6fT+yw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Marc Zyngier , Linus Walleij , Bartosz Golaszewski , Sasha Levin Subject: [PATCH 5.19 175/207] gpio: ixp4xx: Make irqchip immutable Date: Mon, 26 Sep 2022 12:12:44 +0200 Message-Id: <20220926100814.477596656@linuxfoundation.org> X-Mailer: git-send-email 2.37.3 In-Reply-To: <20220926100806.522017616@linuxfoundation.org> References: <20220926100806.522017616@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Linus Walleij [ Upstream commit 94e9bc73d85aa6ecfe249e985ff57abe0ab35f34 ] This turns the IXP4xx GPIO irqchip into an immutable irqchip, a bit different from the standard template due to being hierarchical. Tested on the IXP4xx which uses drivers/ata/pata_ixp4xx_cf.c for a rootfs on compact flash with IRQs from this GPIO block to the CF ATA controller. Cc: Marc Zyngier Signed-off-by: Linus Walleij Acked-by: Marc Zyngier Signed-off-by: Bartosz Golaszewski Signed-off-by: Sasha Levin --- drivers/gpio/gpio-ixp4xx.c | 17 ++++++++++++++--- 1 file changed, 14 insertions(+), 3 deletions(-) diff --git a/drivers/gpio/gpio-ixp4xx.c b/drivers/gpio/gpio-ixp4xx.c index 312309be0287..56656fb519f8 100644 --- a/drivers/gpio/gpio-ixp4xx.c +++ b/drivers/gpio/gpio-ixp4xx.c @@ -63,6 +63,14 @@ static void ixp4xx_gpio_irq_ack(struct irq_data *d) __raw_writel(BIT(d->hwirq), g->base + IXP4XX_REG_GPIS); } +static void ixp4xx_gpio_mask_irq(struct irq_data *d) +{ + struct gpio_chip *gc = irq_data_get_irq_chip_data(d); + + irq_chip_mask_parent(d); + gpiochip_disable_irq(gc, d->hwirq); +} + static void ixp4xx_gpio_irq_unmask(struct irq_data *d) { struct gpio_chip *gc = irq_data_get_irq_chip_data(d); @@ -72,6 +80,7 @@ static void ixp4xx_gpio_irq_unmask(struct irq_data *d) if (!(g->irq_edge & BIT(d->hwirq))) ixp4xx_gpio_irq_ack(d); + gpiochip_enable_irq(gc, d->hwirq); irq_chip_unmask_parent(d); } @@ -149,12 +158,14 @@ static int ixp4xx_gpio_irq_set_type(struct irq_data *d, unsigned int type) return irq_chip_set_type_parent(d, IRQ_TYPE_LEVEL_HIGH); } -static struct irq_chip ixp4xx_gpio_irqchip = { +static const struct irq_chip ixp4xx_gpio_irqchip = { .name = "IXP4GPIO", .irq_ack = ixp4xx_gpio_irq_ack, - .irq_mask = irq_chip_mask_parent, + .irq_mask = ixp4xx_gpio_mask_irq, .irq_unmask = ixp4xx_gpio_irq_unmask, .irq_set_type = ixp4xx_gpio_irq_set_type, + .flags = IRQCHIP_IMMUTABLE, + GPIOCHIP_IRQ_RESOURCE_HELPERS, }; static int ixp4xx_gpio_child_to_parent_hwirq(struct gpio_chip *gc, @@ -263,7 +274,7 @@ static int ixp4xx_gpio_probe(struct platform_device *pdev) g->gc.owner = THIS_MODULE; girq = &g->gc.irq; - girq->chip = &ixp4xx_gpio_irqchip; + gpio_irq_chip_set_chip(girq, &ixp4xx_gpio_irqchip); girq->fwnode = g->fwnode; girq->parent_domain = parent; girq->child_to_parent_hwirq = ixp4xx_gpio_child_to_parent_hwirq; -- 2.35.1