From: Michael Walle <michael@walle.cc> 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" <linus.walleij@linaro.org>, "Bartosz Golaszewski" <bgolaszewski@baylibre.com>, "Rob Herring" <robh+dt@kernel.org>, "Jean Delvare" <jdelvare@suse.com>, "Guenter Roeck" <linux@roeck-us.net>, "Lee Jones" <lee.jones@linaro.org>, "Thierry Reding" <thierry.reding@gmail.com>, "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>, "Wim Van Sebroeck" <wim@linux-watchdog.org>, "Shawn Guo" <shawnguo@kernel.org>, "Li Yang" <leoyang.li@nxp.com>, "Thomas Gleixner" <tglx@linutronix.de>, "Jason Cooper" <jason@lakedaemon.net>, "Marc Zyngier" <maz@kernel.org>, "Michael Walle" <michael@walle.cc> Subject: [PATCH 06/18] irqchip: add sl28cpld interrupt controller support Date: Tue, 17 Mar 2020 21:50:05 +0100 Message-ID: <20200317205017.28280-7-michael@walle.cc> (raw) In-Reply-To: <20200317205017.28280-1-michael@walle.cc> This patch adds support for the interrupt controller inside the sl28 CPLD management controller. Signed-off-by: Michael Walle <michael@walle.cc> --- drivers/irqchip/Kconfig | 3 ++ drivers/irqchip/Makefile | 1 + drivers/irqchip/irq-sl28cpld.c | 92 ++++++++++++++++++++++++++++++++++ drivers/mfd/Kconfig | 4 +- 4 files changed, 98 insertions(+), 2 deletions(-) create mode 100644 drivers/irqchip/irq-sl28cpld.c diff --git a/drivers/irqchip/Kconfig b/drivers/irqchip/Kconfig index 24fe08702ef7..3fd7415c8b55 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 eae0d78cbf22..0f4a37782609 100644 --- a/drivers/irqchip/Makefile +++ b/drivers/irqchip/Makefile @@ -105,3 +105,4 @@ obj-$(CONFIG_MADERA_IRQ) += irq-madera.o obj-$(CONFIG_LS1X_IRQ) += irq-ls1x.o obj-$(CONFIG_TI_SCI_INTR_IRQCHIP) += irq-ti-sci-intr.o obj-$(CONFIG_TI_SCI_INTA_IRQCHIP) += irq-ti-sci-inta.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..fa52ed79137b --- /dev/null +++ b/drivers/irqchip/irq-sl28cpld.c @@ -0,0 +1,92 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * SMARC-sAL28 Interrupt core driver. + * + * Copyright 2019 Kontron Europe GmbH + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_address.h> +#include <linux/of_platform.h> +#include <linux/i2c.h> +#include <linux/regmap.h> +#include <linux/interrupt.h> +#include <linux/mfd/core.h> + +#define INTC_IE 0 +#define INTC_IP 1 + +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; + + irqchip = devm_kzalloc(&pdev->dev, sizeof(*irqchip), GFP_KERNEL); + if (!irqchip) + return -ENOMEM; + + if (!pdev->dev.parent) + return -ENODEV; + + 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 struct platform_driver sl28cpld_intc_driver = { + .probe = sl28cpld_intc_probe, + .driver = { + .name = "sl28cpld-intc", + } +}; +module_platform_driver(sl28cpld_intc_driver); + +MODULE_DESCRIPTION("sl28cpld Interrupt Controller Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig index 01588c366476..4f741d640705 100644 --- a/drivers/mfd/Kconfig +++ b/drivers/mfd/Kconfig @@ -2060,12 +2060,12 @@ config SGI_MFD_IOC3 then say Y. Otherwise say N. config MFD_SL28CPLD - tristate "Kontron sl28 core driver" + bool "Kontron sl28 core driver" depends on I2C=y depends on OF select REGMAP_I2C select REGMAP_IRQ - select SL28CPLD_IRQ + select SL28CPLD_INTC select MFD_CORE help This option enables support for the board management controller -- 2.20.1
next prev parent reply index Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-03-17 20:49 [PATCH 00/18] Add support for Kontron sl28cpld Michael Walle 2020-03-17 20:50 ` [PATCH 01/18] include/linux/ioport.h: add helper to define REG resource constructs Michael Walle 2020-03-17 20:50 ` [PATCH 02/18] mfd: mfd-core: Don't overwrite the dma_mask of the child device Michael Walle 2020-03-17 20:50 ` [PATCH 03/18] mfd: mfd-core: match device tree node against reg property Michael Walle 2020-03-17 20:50 ` [PATCH 04/18] dt-bindings: mfd: Add bindings for sl28cpld Michael Walle 2020-03-30 22:35 ` Rob Herring 2020-03-31 7:40 ` Michael Walle 2020-03-17 20:50 ` [PATCH 05/18] mfd: Add support for Kontron sl28cpld management controller Michael Walle 2020-03-18 3:28 ` Guenter Roeck 2020-03-18 16:38 ` Michael Walle 2020-03-17 20:50 ` Michael Walle [this message] 2020-03-18 16:53 ` [PATCH 06/18] irqchip: add sl28cpld interrupt controller support Guenter Roeck 2020-03-18 17:06 ` Michael Walle 2020-03-18 20:35 ` Guenter Roeck 2020-03-17 20:50 ` [PATCH 07/18] dt-bindings: watchdog: Add bindings for sl28cpld watchdog Michael Walle 2020-03-17 20:50 ` [PATCH 08/18] watchdog: add support " Michael Walle 2020-03-18 3:17 ` Guenter Roeck 2020-03-17 20:50 ` [PATCH 09/18] dt-bindings: pwm: Add bindings for sl28cpld PWM controller Michael Walle 2020-03-17 20:50 ` [PATCH 10/18] pwm: add support " Michael Walle 2020-03-17 20:50 ` [PATCH 11/18] dt-bindings: gpio: Add bindings for sl28cpld GPIO controller Michael Walle 2020-03-17 20:50 ` [PATCH 12/18] gpio: add support for the " Michael Walle 2020-03-18 9:14 ` Bartosz Golaszewski 2020-03-18 12:45 ` Michael Walle 2020-03-25 11:50 ` Bartosz Golaszewski 2020-03-26 20:05 ` Michael Walle 2020-03-27 10:20 ` Linus Walleij 2020-03-27 15:28 ` Michael Walle 2020-03-27 19:01 ` Linus Walleij 2020-03-30 11:21 ` Bartosz Golaszewski 2020-03-30 11:48 ` Michael Walle 2020-03-28 12:04 ` Michael Walle 2020-03-28 17:20 ` Michael Walle 2020-03-17 20:50 ` [PATCH 13/18] dt-bindings: hwmon: Add bindings for sl28cpld hardware monitoring Michael Walle 2020-03-17 20:50 ` [PATCH 14/18] hwmon: add support for the sl28cpld hardware monitoring controller Michael Walle 2020-03-18 3:27 ` Guenter Roeck 2020-03-18 16:32 ` Michael Walle 2020-03-17 20:50 ` [PATCH 15/18] arm64: dts: freescale: sl28: enable sl28cpld Michael Walle 2020-03-17 20:50 ` [PATCH 16/18] arm64: dts: freescale: sl28: map GPIOs to input events Michael Walle 2020-03-17 20:50 ` [PATCH 17/18] arm64: dts: freescale: sl28: enable LED support Michael Walle 2020-03-17 20:50 ` [PATCH 18/18] arm64: dts: freescale: sl28: enable fan support Michael Walle
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