From nobody Sun Dec 28 23:24:12 2025 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 76A0DC10DC3 for ; Mon, 4 Dec 2023 20:38:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1346198AbjLDUig (ORCPT ); Mon, 4 Dec 2023 15:38:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36894 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1376279AbjLDUiH (ORCPT ); Mon, 4 Dec 2023 15:38:07 -0500 Received: from mail-oo1-xc31.google.com (mail-oo1-xc31.google.com [IPv6:2607:f8b0:4864:20::c31]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 643773858 for ; Mon, 4 Dec 2023 12:35:38 -0800 (PST) Received: by mail-oo1-xc31.google.com with SMTP id 006d021491bc7-58d12b53293so3344483eaf.0 for ; Mon, 04 Dec 2023 12:35:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=hefring-com.20230601.gappssmtp.com; s=20230601; t=1701722137; x=1702326937; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=oMsMKq+fG5BsTJ38ktkUAvKvU/juEXAO2vxB2M78m9A=; b=puPA9UAsbsiGjJK4bD5uzqiISC5Auxb/XPKl1W3DkM+OI2MEPNYPbYb6zYzUgicyHa fYIz0J+O0rl1J5qJmJCGa3H5bZAvcGJl8H2AJV7RKvoEKaaU02LFgn0oAwhDe8y7ny6C j0tDqK30HXoVNVZF/lbgHrz4Gv4X6hUAG5msxB5qymDLxOtZaYCwIMYltH9lzss6m4le w1J047+L3fsRt8fuLnwmoQpjcu3oq9Pw44dQXZu64JrF/KqZhbZeRvoK/pbshm1qaU0B gjKBrv9RN83aC8jPuNWH+buofCIhbegY0E1vH9uYgWX2hgYz7HW/SUNcTlv/IEExHGbc MyVg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701722137; x=1702326937; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=oMsMKq+fG5BsTJ38ktkUAvKvU/juEXAO2vxB2M78m9A=; b=j2J2nb2wTFRHgopa6c4NtkgER31Q1qzkT/7PJSO4vTKF9IfkdhfNmy4ajM5630fSZi /xQ7gYUGYaiO2UlMsdeF54htd/G3DAeehkq1IQb6wZDIeBTLUJvGjDYUtE2Ne01zNZfK z6hk0DEymvHY9Wz5JylWWZ0Gnw30uKnRtctE2X2an9rQhR/jShSKKImClwJuCDeuc9Ml UHF1p0nlF1S8KcwehKOlTovNRws+Nzr8nXt/n5ZsuOjak1VT3mGl6IB33IVii72c/R4k F6sFGo7ZxTdN9+sIE98uiBwdiE8fG9Qma09GohgLcFQmMhLFi+k+GCKM7ClS7vaA+yiZ bdig== X-Gm-Message-State: AOJu0Yw83SCOGIfoGraBOuJf035CMiKXZF71HG6LYLeetDyi5k6bxux4 /j6eb+EgCl95AVt9I+vAZFJyaQvtjj0O885/im8= X-Google-Smtp-Source: AGHT+IF2Gj+iJqDa8aGY27lxy9gezYaVc/7geGOoCzfX8J7QXvpmy9rY5js/M1Vlkz5tRc2LBUEwAg== X-Received: by 2002:a05:6871:281:b0:1fa:f230:4c58 with SMTP id i1-20020a056871028100b001faf2304c58mr5820598oae.59.1701722136896; Mon, 04 Dec 2023 12:35:36 -0800 (PST) Received: from localhost.localdomain ([50.212.55.89]) by smtp.gmail.com with ESMTPSA id jo23-20020a056214501700b0067ac930d17asm1123469qvb.141.2023.12.04.12.35.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 Dec 2023 12:35:35 -0800 (PST) From: Ben Wolsieffer To: linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org Cc: Thomas Gleixner , Maxime Coquelin , Alexandre Torgue , Linus Walleij , Ben Wolsieffer Subject: [PATCH 1/2] irqchip/stm32-exti: support retriggering on STM32 MCUs Date: Mon, 4 Dec 2023 15:33:56 -0500 Message-ID: <20231204203357.2897008-2-ben.wolsieffer@hefring.com> X-Mailer: git-send-email 2.42.1 In-Reply-To: <20231204203357.2897008-1-ben.wolsieffer@hefring.com> References: <20231204203357.2897008-1-ben.wolsieffer@hefring.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" EXTI retriggering support was missing on STM32 MCUs. Retriggering is required to emulate GPIO level interrupts using edge interrupts in the STM32 pinctrl driver. Signed-off-by: Ben Wolsieffer --- drivers/irqchip/irq-stm32-exti.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/irqchip/irq-stm32-exti.c b/drivers/irqchip/irq-stm32-e= xti.c index 971240e2e31b..6b3f54457812 100644 --- a/drivers/irqchip/irq-stm32-exti.c +++ b/drivers/irqchip/irq-stm32-exti.c @@ -328,6 +328,18 @@ static void stm32_irq_handler(struct irq_desc *desc) chained_irq_exit(chip, desc); } =20 +static int stm32_irq_retrigger(struct irq_data *d) +{ + struct irq_chip_generic *gc =3D irq_data_get_irq_chip_data(d); + struct stm32_exti_chip_data *chip_data =3D gc->private; + const struct stm32_exti_bank *stm32_bank =3D chip_data->reg_bank; + u32 mask =3D BIT(d->hwirq % IRQS_PER_BANK); + + irq_reg_writel(gc, mask, stm32_bank->swier_ofst); + + return 0; +} + static int stm32_exti_set_type(struct irq_data *d, unsigned int type, u32 *rtsr, u32 *ftsr) { @@ -856,6 +868,7 @@ static int __init stm32_exti_init(const struct stm32_ex= ti_drv_data *drv_data, gc->chip_types->chip.irq_ack =3D stm32_irq_ack; gc->chip_types->chip.irq_mask =3D irq_gc_mask_clr_bit; gc->chip_types->chip.irq_unmask =3D irq_gc_mask_set_bit; + gc->chip_types->chip.irq_retrigger =3D stm32_irq_retrigger; gc->chip_types->chip.irq_set_type =3D stm32_irq_set_type; gc->chip_types->chip.irq_set_wake =3D irq_gc_set_wake; gc->suspend =3D stm32_irq_suspend; --=20 2.42.1