linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * Copyright (C) Maxime Coquelin 2015

 * Copyright (C) STMicroelectronics 2017

 * Author:  Maxime Coquelin <mcoquelin.stm32@gmail.com>

 */

​

#include <linux/bitops.h>

#include <linux/delay.h>

#include <linux/hwspinlock.h>

#include <linux/interrupt.h>

#include <linux/io.h>

#include <linux/irq.h>

#include <linux/irqchip.h>

#include <linux/irqchip/chained_irq.h>

#include <linux/irqdomain.h>

#include <linux/of_address.h>

#include <linux/of_irq.h>

#include <linux/syscore_ops.h>

​

#include <dt-bindings/interrupt-controller/arm-gic.h>

​

#define IRQS_PER_BANK 32

​

#define HWSPNLCK_TIMEOUT    1000 /* usec */

#define HWSPNLCK_RETRY_DELAY    100  /* usec */

​

struct stm32_exti_bank {

    u32 imr_ofst;

    u32 emr_ofst;

    u32 rtsr_ofst;

    u32 ftsr_ofst;

    u32 swier_ofst;

    u32 rpr_ofst;

    u32 fpr_ofst;

};

​

#define UNDEF_REG ~0

​

enum stm32_exti_hwspinlock {

    HWSPINLOCK_UNKNOWN,

    HWSPINLOCK_NONE,

    HWSPINLOCK_READY,

};

​

struct stm32_desc_irq {

    u32 exti;

    u32 irq_parent;

};

​

struct stm32_exti_drv_data {

    const struct stm32_exti_bank **exti_banks;

    const struct stm32_desc_irq *desc_irqs;

    u32 bank_nr;

    u32 irq_nr;

};

​

struct stm32_exti_chip_data {

    struct stm32_exti_host_data *host_data;

    const struct stm32_exti_bank *reg_bank;

    struct raw_spinlock rlock;

    u32 wake_active;

    u32 mask_cache;