From patchwork Tue Mar 7 13:04:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Linus Walleij X-Patchwork-Id: 660210 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 6797FC6FA99 for ; Tue, 7 Mar 2023 13:05:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230164AbjCGNFm (ORCPT ); Tue, 7 Mar 2023 08:05:42 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39714 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230157AbjCGNFb (ORCPT ); Tue, 7 Mar 2023 08:05:31 -0500 Received: from mail-lj1-x231.google.com (mail-lj1-x231.google.com [IPv6:2a00:1450:4864:20::231]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E566E25BA3 for ; Tue, 7 Mar 2023 05:05:03 -0800 (PST) Received: by mail-lj1-x231.google.com with SMTP id z5so13067868ljc.8 for ; Tue, 07 Mar 2023 05:05:03 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1678194289; 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=71KSFXipPt6AFUXeJ7X4eL7ZzgFaUvhDfIYjlqtJPYo=; b=LaGKvhnOuEdjQlskLsAk3XTkexGofp5EYb2xlFvIN7HrICTe8agB7umlUaSpjQtRGb mATWkUpjInHrxhvx98qMCuSYPZFcPI+TjrZdC0rnVMh9Um0xmPLCPNk3dwIys+irE8BX PfTyCTn2IPe9tuiyPRC2j//RWo67afoXMKrhi3fgqY+fPYX8z3B1OqJEvSdfGBsr5H/I l9HEpeWtmW0OHCe05sHzT3w0AyTgM51/RbaEC0MZVZN5JJ56B3/+9gVQ78gskQIM4hMi 5sxsXjqvrxy2K/nY4JInBGHzBp+OmjQ/TP7zw27rRqtRqKhffAX2atnU6MygylR5fnlj UD9g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678194289; 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=71KSFXipPt6AFUXeJ7X4eL7ZzgFaUvhDfIYjlqtJPYo=; b=ejVlDmebBhYZEG+B6Urn5onC+OHMmEU1WNAowvLv2mz8VTm31jsZs0ynTRmiRFfuhR 6zTHsNg0cGUKsN55vDBHigmGJIkNOhn0ZT20SV3e79vjOo5yHa7xtJ0EmCa/jlHKx3eF yI8QUkGUsd1rgszGf31eHxPnavrffY6vp2BXLTdzUL0/GiN1tXFInXxUu+4Ej4au4QWN KCi9YtOGvdBGd5QKGkBdvr8lhLltJ1AD/AeBeCNEBLSWYh2D1bm1r2z0P9YejePfQDyN 4rZj/Bc6KXT7s1jwx/BGcHA82fyKbm8rV+aUWJ6hAFRYf1YznGvkrZLs0wy8TUVaWqCN L1+A== X-Gm-Message-State: AO0yUKVlSMxTrakW/RogahjtgCyepGtK3BhLoTuk+n1y7pFvHTWOJ3EA qpNlfi9kZiv5qyvlT8P56/IByg== X-Google-Smtp-Source: AK7set91P59ZVpgeiHIrGZ/D7uM9gIerZi/78626uHZzkgh5XEVGvwp3vnbYmPvDHtoflFY+Jfnbww== X-Received: by 2002:a2e:8085:0:b0:295:a32b:92ed with SMTP id i5-20020a2e8085000000b00295a32b92edmr4144886ljg.48.1678194289545; Tue, 07 Mar 2023 05:04:49 -0800 (PST) Received: from [127.0.1.1] ([85.235.12.219]) by smtp.gmail.com with ESMTPSA id w14-20020ac2598e000000b004caf992bba9sm2030548lfn.268.2023.03.07.05.04.48 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Mar 2023 05:04:49 -0800 (PST) From: Linus Walleij Date: Tue, 07 Mar 2023 14:04:46 +0100 Subject: [PATCH v2 04/16] gpio: aspeed-sgpio: Convert to immutable irq_chip MIME-Version: 1.0 Message-Id: <20230215-immutable-chips-v2-4-d6b0e3f2d991@linaro.org> References: <20230215-immutable-chips-v2-0-d6b0e3f2d991@linaro.org> In-Reply-To: <20230215-immutable-chips-v2-0-d6b0e3f2d991@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 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.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-aspeed-sgpio.c | 44 ++++++++++++++++++++++++++++++++-------- 1 file changed, 36 insertions(+), 8 deletions(-) diff --git a/drivers/gpio/gpio-aspeed-sgpio.c b/drivers/gpio/gpio-aspeed-sgpio.c index 454cefbeecf0..3c1c0fc21fc5 100644 --- a/drivers/gpio/gpio-aspeed-sgpio.c +++ b/drivers/gpio/gpio-aspeed-sgpio.c @@ -14,6 +14,7 @@ #include #include #include +#include #include #include @@ -29,7 +30,7 @@ struct aspeed_sgpio_pdata { struct aspeed_sgpio { struct gpio_chip chip; - struct irq_chip intc; + struct device *dev; struct clk *pclk; raw_spinlock_t lock; void __iomem *base; @@ -296,6 +297,10 @@ static void aspeed_sgpio_irq_set_mask(struct irq_data *d, bool set) irqd_to_aspeed_sgpio_data(d, &gpio, &bank, &bit, &offset); addr = bank_reg(gpio, bank, reg_irq_enable); + /* Unmasking the IRQ */ + if (set) + gpiochip_enable_irq(&gpio->chip, irqd_to_hwirq(d)); + raw_spin_lock_irqsave(&gpio->lock, flags); reg = ioread32(addr); @@ -307,6 +312,12 @@ static void aspeed_sgpio_irq_set_mask(struct irq_data *d, bool set) iowrite32(reg, addr); raw_spin_unlock_irqrestore(&gpio->lock, flags); + + /* Masking the IRQ */ + if (!set) + gpiochip_disable_irq(&gpio->chip, irqd_to_hwirq(d)); + + } static void aspeed_sgpio_irq_mask(struct irq_data *d) @@ -401,6 +412,27 @@ static void aspeed_sgpio_irq_handler(struct irq_desc *desc) chained_irq_exit(ic, desc); } +static void aspeed_sgpio_irq_print_chip(struct irq_data *d, struct seq_file *p) +{ + const struct aspeed_sgpio_bank *bank; + struct aspeed_sgpio *gpio; + u32 bit; + int offset; + + irqd_to_aspeed_sgpio_data(d, &gpio, &bank, &bit, &offset); + seq_printf(p, dev_name(gpio->dev)); +} + +static const struct irq_chip aspeed_sgpio_irq_chip = { + .irq_ack = aspeed_sgpio_irq_ack, + .irq_mask = aspeed_sgpio_irq_mask, + .irq_unmask = aspeed_sgpio_irq_unmask, + .irq_set_type = aspeed_sgpio_set_type, + .irq_print_chip = aspeed_sgpio_irq_print_chip, + .flags = IRQCHIP_IMMUTABLE, + GPIOCHIP_IRQ_RESOURCE_HELPERS, +}; + static int aspeed_sgpio_setup_irqs(struct aspeed_sgpio *gpio, struct platform_device *pdev) { @@ -423,14 +455,8 @@ static int aspeed_sgpio_setup_irqs(struct aspeed_sgpio *gpio, iowrite32(0xffffffff, bank_reg(gpio, bank, reg_irq_status)); } - gpio->intc.name = dev_name(&pdev->dev); - gpio->intc.irq_ack = aspeed_sgpio_irq_ack; - gpio->intc.irq_mask = aspeed_sgpio_irq_mask; - gpio->intc.irq_unmask = aspeed_sgpio_irq_unmask; - gpio->intc.irq_set_type = aspeed_sgpio_set_type; - irq = &gpio->chip.irq; - irq->chip = &gpio->intc; + gpio_irq_chip_set_chip(irq, &aspeed_sgpio_irq_chip); irq->init_valid_mask = aspeed_sgpio_irq_init_valid_mask; irq->handler = handle_bad_irq; irq->default_type = IRQ_TYPE_NONE; @@ -524,6 +550,8 @@ static int __init aspeed_sgpio_probe(struct platform_device *pdev) if (IS_ERR(gpio->base)) return PTR_ERR(gpio->base); + gpio->dev = &pdev->dev; + pdata = device_get_match_data(&pdev->dev); if (!pdata) return -EINVAL;