linux-imx

/*

 * Register map access API internal header

 *

 * 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.

 */

​

#ifndef _REGMAP_INTERNAL_H

#define _REGMAP_INTERNAL_H

​

#include <linux/device.h>

#include <linux/regmap.h>

#include <linux/fs.h>

#include <linux/list.h>

#include <linux/wait.h>

​

struct regmap;

struct regcache_ops;

​

struct regmap_debugfs_off_cache {

    struct list_head list;

    off_t min;

    off_t max;

    unsigned int base_reg;

    unsigned int max_reg;

};

​

struct regmap_format {

    size_t buf_size;

    size_t reg_bytes;

    size_t pad_bytes;

    size_t val_bytes;

    void (*format_write)(struct regmap *map,

                 unsigned int reg, unsigned int val);

    void (*format_reg)(void *buf, unsigned int reg, unsigned int shift);

    void (*format_val)(void *buf, unsigned int val, unsigned int shift);

    unsigned int (*parse_val)(const void *buf);

    void (*parse_inplace)(void *buf);

};

​

struct regmap_async {

    struct list_head list;

    struct regmap *map;

    void *work_buf;

};

​

struct regmap {

    union {

        struct mutex mutex;

        struct {

            spinlock_t spinlock;

            unsigned long spinlock_flags;

        };

    };

    regmap_lock lock;

    regmap_unlock unlock;

    void *lock_arg; /* This is passed to lock/unlock functions */

    gfp_t alloc_flags;