linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * irqchip for the IXP4xx interrupt controller

 * Copyright (C) 2019 Linus Walleij <linus.walleij@linaro.org>

 *

 * Based on arch/arm/mach-ixp4xx/common.c

 * Copyright 2002 (C) Intel Corporation

 * Copyright 2003-2004 (C) MontaVista, Software, Inc.

 * Copyright (C) Deepak Saxena <dsaxena@plexity.net>

 */

#include <linux/bitops.h>

#include <linux/gpio/driver.h>

#include <linux/irq.h>

#include <linux/io.h>

#include <linux/irqchip.h>

#include <linux/irqchip/irq-ixp4xx.h>

#include <linux/irqdomain.h>

#include <linux/of.h>

#include <linux/of_address.h>

#include <linux/of_irq.h>

#include <linux/platform_device.h>

#include <linux/cpu.h>

​

#include <asm/exception.h>

#include <asm/mach/irq.h>

​

#define IXP4XX_ICPR 0x00 /* Interrupt Status */

#define IXP4XX_ICMR 0x04 /* Interrupt Enable */

#define IXP4XX_ICLR 0x08 /* Interrupt IRQ/FIQ Select */

#define IXP4XX_ICIP 0x0C /* IRQ Status */

#define IXP4XX_ICFP 0x10 /* FIQ Status */

#define IXP4XX_ICHR 0x14 /* Interrupt Priority */

#define IXP4XX_ICIH 0x18 /* IRQ Highest Pri Int */

#define IXP4XX_ICFH 0x1C /* FIQ Highest Pri Int */

​

/* IXP43x and IXP46x-only */

#define IXP4XX_ICPR2    0x20 /* Interrupt Status 2 */

#define IXP4XX_ICMR2    0x24 /* Interrupt Enable 2 */

#define IXP4XX_ICLR2    0x28 /* Interrupt IRQ/FIQ Select 2 */

#define IXP4XX_ICIP2    0x2C /* IRQ Status */

#define IXP4XX_ICFP2    0x30 /* FIQ Status */

#define IXP4XX_ICEEN    0x34 /* Error High Pri Enable */

​

/**

 * struct ixp4xx_irq - state container for the Faraday IRQ controller

 * @irqbase: IRQ controller memory base in virtual memory

 * @is_356: if this is an IXP43x, IXP45x or IX46x SoC (with 64 IRQs)

 * @irqchip: irqchip for this instance

 * @domain: IRQ domain for this instance

 */

struct ixp4xx_irq {

    void __iomem *irqbase;

    bool is_356;

    struct irq_chip irqchip;

    struct irq_domain *domain;

};

​

/* Local static state container */

static struct ixp4xx_irq ixirq;

​

/* GPIO Clocks */

#define IXP4XX_GPIO_CLK_0       14

#define IXP4XX_GPIO_CLK_1       15