From patchwork Thu Apr 2 20:36:47 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Michael Walle X-Patchwork-Id: 215095 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=-9.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU, 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 24C72C2BA1B for ; Thu, 2 Apr 2020 20:38:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E0BCB208E0 for ; Thu, 2 Apr 2020 20:38:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=walle.cc header.i=@walle.cc header.b="DEo9GkYt" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389343AbgDBUiK (ORCPT ); Thu, 2 Apr 2020 16:38:10 -0400 Received: from ssl.serverraum.org ([176.9.125.105]:38109 "EHLO ssl.serverraum.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389514AbgDBUhR (ORCPT ); Thu, 2 Apr 2020 16:37:17 -0400 Received: from apollo.fritz.box (unknown [IPv6:2a02:810c:c200:2e91:6257:18ff:fec4:ca34]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-384) server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by ssl.serverraum.org (Postfix) with ESMTPSA id D68BB23D22; Thu, 2 Apr 2020 22:37:13 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=walle.cc; s=mail2016061301; t=1585859834; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=kaWwf4uffcPQf7EE7ZV+X/pMrqzfzrhbi/7KT6avBwM=; b=DEo9GkYtkohYmY81gx80Vs3YUYRyjlNOuqMvKhlTN7/cE2u81Pz69GXeCWpxf//xwojjta GqOuObzxMCwDMiEK7YIo8nrBksweynrmUTENmWwL6Oeh7pBNP+vaXeZkboIv986Az2GpTn qB8yEqADJpCHkVny+AJnxX6ETwOHZZk= From: Michael Walle To: linux-gpio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hwmon@vger.kernel.org, linux-pwm@vger.kernel.org, linux-watchdog@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: Linus Walleij , Bartosz Golaszewski , Rob Herring , Jean Delvare , Guenter Roeck , Lee Jones , Thierry Reding , =?utf-8?q?Uwe_Kleine-K?= =?utf-8?b?w7ZuaWc=?= , Wim Van Sebroeck , Shawn Guo , Li Yang , Thomas Gleixner , Jason Cooper , Marc Zyngier , Mark Brown , Greg Kroah-Hartman , Michael Walle Subject: [PATCH v2 07/16] irqchip: add sl28cpld interrupt controller support Date: Thu, 2 Apr 2020 22:36:47 +0200 Message-Id: <20200402203656.27047-8-michael@walle.cc> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200402203656.27047-1-michael@walle.cc> References: <20200402203656.27047-1-michael@walle.cc> MIME-Version: 1.0 X-Spamd-Bar: ++++++ X-Rspamd-Server: web X-Rspamd-Queue-Id: D68BB23D22 X-Spamd-Result: default: False [6.40 / 15.00]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; R_MISSING_CHARSET(2.50)[]; FREEMAIL_ENVRCPT(0.00)[gmail.com]; TAGGED_RCPT(0.00)[dt]; MIME_GOOD(-0.10)[text/plain]; BROKEN_CONTENT_TYPE(1.50)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_SIGNED(0.00)[]; RCPT_COUNT_TWELVE(0.00)[24]; MID_CONTAINS_FROM(1.00)[]; NEURAL_HAM(-0.00)[-0.166]; RCVD_COUNT_ZERO(0.00)[0]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:31334, ipnet:2a02:810c:8000::/33, country:DE]; FREEMAIL_CC(0.00)[linaro.org,baylibre.com,kernel.org,suse.com,roeck-us.net,gmail.com,pengutronix.de,linux-watchdog.org,nxp.com,linutronix.de,lakedaemon.net,linuxfoundation.org,walle.cc]; SUSPICIOUS_RECIPS(1.50)[] X-Spam: Yes Sender: linux-watchdog-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-watchdog@vger.kernel.org This patch adds support for the interrupt controller inside the sl28 CPLD management controller. Signed-off-by: Michael Walle --- drivers/irqchip/Kconfig | 3 ++ drivers/irqchip/Makefile | 1 + drivers/irqchip/irq-sl28cpld.c | 97 ++++++++++++++++++++++++++++++++++ drivers/mfd/Kconfig | 2 + 4 files changed, 103 insertions(+) create mode 100644 drivers/irqchip/irq-sl28cpld.c diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig index a85aada04a64..234db932e7cf 100644 --- a/drivers/irqchip/Kconfig +++ b/drivers/irqchip/Kconfig @@ -246,6 +246,9 @@ config RENESAS_RZA1_IRQC Enable support for the Renesas RZ/A1 Interrupt Controller, to use up to 8 external interrupts with configurable sense select. +config SL28CPLD_INTC + bool + config ST_IRQCHIP bool select REGMAP diff --git a/drivers/irqchip/Makefile b/drivers/irqchip/Makefile index 37bbe39bf909..e3c6b94f7b0a 100644 --- a/drivers/irqchip/Makefile +++ b/drivers/irqchip/Makefile @@ -107,3 +107,4 @@ obj-$(CONFIG_TI_SCI_INTR_IRQCHIP) += irq-ti-sci-intr.o obj-$(CONFIG_TI_SCI_INTA_IRQCHIP) += irq-ti-sci-inta.o obj-$(CONFIG_LOONGSON_LIOINTC) += irq-loongson-liointc.o obj-$(CONFIG_LOONGSON_HTPIC) += irq-loongson-htpic.o +obj-$(CONFIG_SL28CPLD_INTC) += irq-sl28cpld.o diff --git a/drivers/irqchip/irq-sl28cpld.c b/drivers/irqchip/irq-sl28cpld.c new file mode 100644 index 000000000000..88de71d32b09 --- /dev/null +++ b/drivers/irqchip/irq-sl28cpld.c @@ -0,0 +1,97 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * sl28cpld interrupt controller driver. + * + * Copyright 2019 Kontron Europe GmbH + */ + +#include +#include +#include +#include +#include +#include + +#define INTC_IE 0x00 +#define INTC_IP 0x01 + +static const struct regmap_irq sl28cpld_irqs[] = { + REGMAP_IRQ_REG_LINE(0, 8), + REGMAP_IRQ_REG_LINE(1, 8), + REGMAP_IRQ_REG_LINE(2, 8), + REGMAP_IRQ_REG_LINE(3, 8), + REGMAP_IRQ_REG_LINE(4, 8), + REGMAP_IRQ_REG_LINE(5, 8), + REGMAP_IRQ_REG_LINE(6, 8), + REGMAP_IRQ_REG_LINE(7, 8), +}; + +struct sl28cpld_intc { + struct regmap *regmap; + struct regmap_irq_chip chip; + struct regmap_irq_chip_data *irq_data; +}; + +static int sl28cpld_intc_probe(struct platform_device *pdev) +{ + struct sl28cpld_intc *irqchip; + struct resource *res; + unsigned int irq; + int ret; + + if (!pdev->dev.parent) + return -ENODEV; + + irqchip = devm_kzalloc(&pdev->dev, sizeof(*irqchip), GFP_KERNEL); + if (!irqchip) + return -ENOMEM; + + irqchip->regmap = dev_get_regmap(pdev->dev.parent, NULL); + if (!irqchip->regmap) + return -ENODEV; + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; + + res = platform_get_resource(pdev, IORESOURCE_REG, 0); + if (!res) + return -EINVAL; + + irqchip->chip.name = "sl28cpld-intc"; + irqchip->chip.irqs = sl28cpld_irqs; + irqchip->chip.num_irqs = ARRAY_SIZE(sl28cpld_irqs); + irqchip->chip.num_regs = 1; + irqchip->chip.status_base = res->start + INTC_IP; + irqchip->chip.mask_base = res->start + INTC_IE; + irqchip->chip.mask_invert = true, + irqchip->chip.ack_base = res->start + INTC_IP; + + ret = devm_regmap_add_irq_chip(&pdev->dev, irqchip->regmap, irq, + IRQF_SHARED | IRQF_ONESHOT, 0, + &irqchip->chip, &irqchip->irq_data); + if (ret) + return ret; + dev_info(&pdev->dev, "registered IRQ %d\n", irq); + + return 0; +} + +static const struct platform_device_id sl28cpld_intc_id_table[] = { + { "sl28cpld-intc" }, + {} +}; +MODULE_DEVICE_TABLE(platform, sl28cpld_intc_id_table); + +static struct platform_driver sl28cpld_intc_driver = { + .probe = sl28cpld_intc_probe, + .id_table = sl28cpld_intc_id_table, + .driver = { + .name = KBUILD_MODNAME, + } +}; +module_platform_driver(sl28cpld_intc_driver); + +MODULE_DESCRIPTION("sl28cpld Interrupt Controller Driver"); +MODULE_AUTHOR("Michael Walle "); +MODULE_LICENSE("GPL"); diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 7c6761161f7a..4f741d640705 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -2064,6 +2064,8 @@ config MFD_SL28CPLD depends on I2C=y depends on OF select REGMAP_I2C + select REGMAP_IRQ + select SL28CPLD_INTC select MFD_CORE help This option enables support for the board management controller