linux-imx

/*

 * regmap based irq_chip

 *

 * Copyright 2011 Wolfson Microelectronics plc

 *

 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as

 * published by the Free Software Foundation.

 */

​

#include <linux/device.h>

#include <linux/export.h>

#include <linux/interrupt.h>

#include <linux/irq.h>

#include <linux/irqdomain.h>

#include <linux/pm_runtime.h>

#include <linux/regmap.h>

#include <linux/slab.h>

​

#include "internal.h"

​

struct regmap_irq_chip_data {

    struct mutex lock;

    struct irq_chip irq_chip;

​

    struct regmap *map;

    const struct regmap_irq_chip *chip;

​

    int irq_base;

    struct irq_domain *domain;

​

    int irq;

    int wake_count;

​

    void *status_reg_buf;

    unsigned int *main_status_buf;

    unsigned int *status_buf;

    unsigned int *mask_buf;

    unsigned int *mask_buf_def;

    unsigned int *wake_buf;

    unsigned int *type_buf;

    unsigned int *type_buf_def;

​

    unsigned int irq_reg_stride;

    unsigned int type_reg_stride;

​

    bool clear_status:1;

};

​

static inline const

struct regmap_irq *irq_to_regmap_irq(struct regmap_irq_chip_data *data,

                     int irq)

{

    return &data->chip->irqs[irq];

}

​

static void regmap_irq_lock(struct irq_data *data)

{

    struct regmap_irq_chip_data *d = irq_data_get_irq_chip_data(data);

​

    mutex_lock(&d->lock);