linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * Renesas R-Car GPIO Support

 *

 *  Copyright (C) 2014 Renesas Electronics Corporation

 *  Copyright (C) 2013 Magnus Damm

 */

​

#include <linux/err.h>

#include <linux/gpio/driver.h>

#include <linux/init.h>

#include <linux/interrupt.h>

#include <linux/io.h>

#include <linux/ioport.h>

#include <linux/irq.h>

#include <linux/module.h>

#include <linux/of.h>

#include <linux/of_device.h>

#include <linux/pinctrl/consumer.h>

#include <linux/platform_device.h>

#include <linux/pm_runtime.h>

#include <linux/spinlock.h>

#include <linux/slab.h>

​

struct gpio_rcar_bank_info {

    u32 iointsel;

    u32 inoutsel;

    u32 outdt;

    u32 posneg;

    u32 edglevel;

    u32 bothedge;

    u32 intmsk;

};

​

struct gpio_rcar_priv {

    void __iomem *base;

    spinlock_t lock;

    struct device *dev;

    struct gpio_chip gpio_chip;

    struct irq_chip irq_chip;

    unsigned int irq_parent;

    atomic_t wakeup_path;

    bool has_outdtsel;

    bool has_both_edge_trigger;

    struct gpio_rcar_bank_info bank_info;

};

​

#define IOINTSEL 0x00   /* General IO/Interrupt Switching Register */

#define INOUTSEL 0x04   /* General Input/Output Switching Register */

#define OUTDT 0x08  /* General Output Register */

#define INDT 0x0c   /* General Input Register */

#define INTDT 0x10  /* Interrupt Display Register */

#define INTCLR 0x14 /* Interrupt Clear Register */

#define INTMSK 0x18 /* Interrupt Mask Register */

#define MSKCLR 0x1c /* Interrupt Mask Clear Register */

#define POSNEG 0x20 /* Positive/Negative Logic Select Register */

#define EDGLEVEL 0x24   /* Edge/level Select Register */

#define FILONOFF 0x28   /* Chattering Prevention On/Off Register */

#define OUTDTSEL 0x40   /* Output Data Select Register */

#define BOTHEDGE 0x4c   /* One Edge/Both Edge Select Register */

​

#define RCAR_MAX_GPIO_PER_BANK      32

​