From patchwork Thu Mar 9 07:46:00 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Linus Walleij X-Patchwork-Id: 13166907 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 38848C64EC4 for ; Thu, 9 Mar 2023 07:51:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References:Message-Id :MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=fLVfhHm490t92mksgg3Ui8FtITIUs7zUXN66buj0c7I=; b=BI2pPclssjxW66 dIkTqh0XwfqxFXf1XdS4dspbKJ0S7Hvrb5TU3HvuzRzPnPXZfWmsOlfLB6yjUK8wwsT4OvWXKENgV Z2LNwmYkUSf3YUulG90UNnsccmuswnUNUIQKfyaIb8u3ipL9wcxcc4bdKaJHXX5iBCXQIPM4FSOk4 2c6wvo/WvdrfnrHI5BPi95izUJj06AqM2y+NakVLKq0dz8zVuuliGeNp2Th5Ga8WWo51GTtbDur3c nwEOzrLIJNdbw9w0ZY2/OylpOgWR7/BLVgOBNob7D02XGYxhXHXSkskUDVPpTzFBnXDXqGVpxfLhm XKBY7tqrAOVGndsb5SeA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1paB2s-008LJm-7c; Thu, 09 Mar 2023 07:50:38 +0000 Received: from mail-lf1-x12f.google.com ([2a00:1450:4864:20::12f]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1paAya-008J5j-51 for linux-arm-kernel@lists.infradead.org; Thu, 09 Mar 2023 07:46:14 +0000 Received: by mail-lf1-x12f.google.com with SMTP id i9so1157751lfc.6 for ; Wed, 08 Mar 2023 23:46:09 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1678347968; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=Pkmx+b8ik/C6bLfv+4RBCDp/VEmyhMZOMZzx00ojykk=; b=p3Kr/WFNbbKFk66agzCT4u42Y5KITAZpT48aFDNPE9ZUZHzzWb76fkK8FF1mTSwXvA YN00K6GTgQC1XC+mSoGVipsLmUmGGI2Ditgn5WnNaGmdlVcaT0n1cQsDlfgsKhlAdyIG 0VD4mueZ56RA8/YbfkwoduJ4nCXDurAqKFa6Rt8oQHpjXxLFrUWlgtfVwrrAoMGpKt0w aariaDW/AIcCYsIghKFcThCHY0OPYL8YkfwbdKEkF8qSKkpnlYYSD99dkFG0/dqduNje gSlB2/gHJo7+OIQaV7pAaEMDPRnenW8c0PzItdFAYuv0gBV0pV2zXHmS6KtCDIR3Fn+W Eg0Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678347968; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Pkmx+b8ik/C6bLfv+4RBCDp/VEmyhMZOMZzx00ojykk=; b=FXwRQKzNNdok1MQ0wNQ9XGXPSxR6TAFTwhcVm2tJcs68yCtUukWqTcfAqiUSXxonPb Xaog5+Iz1SyN46FTNZf0WnOlhjrRB15+dyx6VEwQ41Oy2tsCV1jwKwQdPwp2NYl6cYqf FKWEHOFBPJf2AL5dxp6MdMx44VGpiDzTzrjdWn1v396vJndc4067+uhhLAcSeUo+6n/b W0mve1CguaA+uTmJid9UrLeDW0kiCRch9JFi6wAWEsk1p1kKkIgDh1ZqOiIpcbrTLtW1 xJEhhSF2QFUv4b23kPifaAL9zlE/z9jf4/sVbIwOPeVxIE1wSBx7zO0fCRYkjrhmfWWe YZ1g== X-Gm-Message-State: AO0yUKUMxU4m81+tjD+T0Nkq4ddZs9D7IqsGNnsesdVKe2AWsYhdU+Hl RnzeOqfAG0UEpKnSr2b3OgdD/g== X-Google-Smtp-Source: AK7set/7bPEP30lH2CywZpfXJDDlcTykBdecq0v0yxbUeNWQFNURhNsZZCgZbpHl19Di3POVs7nG3A== X-Received: by 2002:ac2:5dfa:0:b0:4b6:e405:1027 with SMTP id z26-20020ac25dfa000000b004b6e4051027mr6046717lfq.14.1678347968374; Wed, 08 Mar 2023 23:46:08 -0800 (PST) Received: from [127.0.1.1] ([85.235.12.219]) by smtp.gmail.com with ESMTPSA id a6-20020a056512020600b004bb766e01a4sm2568972lfo.245.2023.03.08.23.46.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 08 Mar 2023 23:46:08 -0800 (PST) From: Linus Walleij Date: Thu, 09 Mar 2023 08:46:00 +0100 Subject: [PATCH v3 12/17] gpio: mlxbf2: Convert to immutable irq_chip MIME-Version: 1.0 Message-Id: <20230215-immutable-chips-v3-12-972542092a77@linaro.org> References: <20230215-immutable-chips-v3-0-972542092a77@linaro.org> In-Reply-To: <20230215-immutable-chips-v3-0-972542092a77@linaro.org> To: Mun Yew Tham , Bartosz Golaszewski , Joel Stanley , Andrew Jeffery , Alban Bedel , Orson Zhai , Baolin Wang , Chunyan Zhang , Jay Fang , Daniel Palmer , Romain Perier , Santosh Shilimkar , Kevin Hilman , William Breathitt Gray Cc: linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-aspeed@lists.ozlabs.org, linux-omap@vger.kernel.org, Linus Walleij , Marc Zyngier X-Mailer: b4 0.12.1 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230308_234612_235061_6A5D6E81 X-CRM114-Status: GOOD ( 17.75 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Convert the driver to immutable irq-chip with a bit of intuition. Cc: Marc Zyngier Acked-by: Marc Zyngier Signed-off-by: Linus Walleij --- drivers/gpio/gpio-mlxbf2.c | 32 +++++++++++++++++++++++++------- 1 file changed, 25 insertions(+), 7 deletions(-) diff --git a/drivers/gpio/gpio-mlxbf2.c b/drivers/gpio/gpio-mlxbf2.c index 77a41151c921..6abe01bc39c3 100644 --- a/drivers/gpio/gpio-mlxbf2.c +++ b/drivers/gpio/gpio-mlxbf2.c @@ -17,6 +17,7 @@ #include #include #include +#include #include #include @@ -65,10 +66,10 @@ struct mlxbf2_gpio_context_save_regs { /* BlueField-2 gpio block context structure. */ struct mlxbf2_gpio_context { struct gpio_chip gc; - struct irq_chip irq_chip; /* YU GPIO blocks address */ void __iomem *gpio_io; + struct device *dev; struct mlxbf2_gpio_context_save_regs *csave_regs; }; @@ -237,6 +238,7 @@ static void mlxbf2_gpio_irq_enable(struct irq_data *irqd) unsigned long flags; u32 val; + gpiochip_enable_irq(gc, irqd_to_hwirq(irqd)); raw_spin_lock_irqsave(&gs->gc.bgpio_lock, flags); val = readl(gs->gpio_io + YU_GPIO_CAUSE_OR_CLRCAUSE); val |= BIT(offset); @@ -261,6 +263,7 @@ static void mlxbf2_gpio_irq_disable(struct irq_data *irqd) val &= ~BIT(offset); writel(val, gs->gpio_io + YU_GPIO_CAUSE_OR_EVTEN0); raw_spin_unlock_irqrestore(&gs->gc.bgpio_lock, flags); + gpiochip_disable_irq(gc, irqd_to_hwirq(irqd)); } static irqreturn_t mlxbf2_gpio_irq_handler(int irq, void *ptr) @@ -322,6 +325,24 @@ mlxbf2_gpio_irq_set_type(struct irq_data *irqd, unsigned int type) return 0; } +static void mlxbf2_gpio_irq_print_chip(struct irq_data *irqd, + struct seq_file *p) +{ + struct gpio_chip *gc = irq_data_get_irq_chip_data(irqd); + struct mlxbf2_gpio_context *gs = gpiochip_get_data(gc); + + seq_printf(p, dev_name(gs->dev)); +} + +static const struct irq_chip mlxbf2_gpio_irq_chip = { + .irq_set_type = mlxbf2_gpio_irq_set_type, + .irq_enable = mlxbf2_gpio_irq_enable, + .irq_disable = mlxbf2_gpio_irq_disable, + .irq_print_chip = mlxbf2_gpio_irq_print_chip, + .flags = IRQCHIP_IMMUTABLE, + GPIOCHIP_IRQ_RESOURCE_HELPERS, +}; + /* BlueField-2 GPIO driver initialization routine. */ static int mlxbf2_gpio_probe(struct platform_device *pdev) @@ -340,6 +361,8 @@ mlxbf2_gpio_probe(struct platform_device *pdev) if (!gs) return -ENOMEM; + gs->dev = dev; + /* YU GPIO block address */ gs->gpio_io = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(gs->gpio_io)) @@ -376,13 +399,8 @@ mlxbf2_gpio_probe(struct platform_device *pdev) irq = platform_get_irq(pdev, 0); if (irq >= 0) { - gs->irq_chip.name = name; - gs->irq_chip.irq_set_type = mlxbf2_gpio_irq_set_type; - gs->irq_chip.irq_enable = mlxbf2_gpio_irq_enable; - gs->irq_chip.irq_disable = mlxbf2_gpio_irq_disable; - girq = &gs->gc.irq; - girq->chip = &gs->irq_chip; + gpio_irq_chip_set_chip(girq, &mlxbf2_gpio_irq_chip); girq->handler = handle_simple_irq; girq->default_type = IRQ_TYPE_NONE; /* This will let us handle the parent IRQ in the driver */