root/include/linux/mfd/wm8994/core.h

INCLUDED FROM

DEFINITIONS

1. wm8994_reg_read
2. wm8994_reg_write
3. wm8994_bulk_read
4. wm8994_bulk_write
5. wm8994_set_bits
6. wm8994_request_irq
7. wm8994_free_irq

/*
 * include/linux/mfd/wm8994/core.h -- Core interface for WM8994
 *
 * Copyright 2009 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 as published by the
 *  Free Software Foundation;  either version 2 of the  License, or (at your
 *  option) any later version.
 *
 */

#ifndef __MFD_WM8994_CORE_H__
#define __MFD_WM8994_CORE_H__

#include <linux/mutex.h>
#include <linux/interrupt.h>
#include <linux/regmap.h>

#include <linux/mfd/wm8994/pdata.h>

enum wm8994_type {
        WM8994 = 0,
        WM8958 = 1,
        WM1811 = 2,
};

struct regulator_dev;
struct regulator_bulk_data;
struct irq_domain;

#define WM8994_NUM_GPIO_REGS 11
#define WM8994_NUM_LDO_REGS   2
#define WM8994_NUM_IRQ_REGS   2

#define WM8994_IRQ_TEMP_SHUT            0
#define WM8994_IRQ_MIC1_DET             1
#define WM8994_IRQ_MIC1_SHRT            2
#define WM8994_IRQ_MIC2_DET             3
#define WM8994_IRQ_MIC2_SHRT            4
#define WM8994_IRQ_FLL1_LOCK            5
#define WM8994_IRQ_FLL2_LOCK            6
#define WM8994_IRQ_SRC1_LOCK            7
#define WM8994_IRQ_SRC2_LOCK            8
#define WM8994_IRQ_AIF1DRC1_SIG_DET     9
#define WM8994_IRQ_AIF1DRC2_SIG_DET     10
#define WM8994_IRQ_AIF2DRC_SIG_DET      11
#define WM8994_IRQ_FIFOS_ERR            12
#define WM8994_IRQ_WSEQ_DONE            13
#define WM8994_IRQ_DCS_DONE             14
#define WM8994_IRQ_TEMP_WARN            15

/* GPIOs in the chip are numbered from 1-11 */
#define WM8994_IRQ_GPIO(x) (x + WM8994_IRQ_TEMP_WARN)

struct wm8994 {
        struct wm8994_pdata pdata;

        enum wm8994_type type;
        int revision;
        int cust_id;

        struct device *dev;
        struct regmap *regmap;

        bool ldo_ena_always_driven;

        int gpio_base;
        int irq_base;

        int irq;
        struct regmap_irq_chip_data *irq_data;
        struct irq_domain *edge_irq;

        /* Used over suspend/resume */
        bool suspended;

        struct regulator_dev *dbvdd;
        int num_supplies;
        struct regulator_bulk_data *supplies;
};

/* Device I/O API */

static inline int wm8994_reg_read(struct wm8994 *wm8994, unsigned short reg)
{
        unsigned int val;
        int ret;

        ret = regmap_read(wm8994->regmap, reg, &val);

        if (ret < 0)
                return ret;
        else
                return val;
}

static inline int wm8994_reg_write(struct wm8994 *wm8994, unsigned short reg,
                                   unsigned short val)
{
        return regmap_write(wm8994->regmap, reg, val);
}

static inline int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
                                   int count, u16 *buf)
{
        return regmap_bulk_read(wm8994->regmap, reg, buf, count);
}

static inline int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg,
                                    int count, const u16 *buf)
{
        return regmap_raw_write(wm8994->regmap, reg, buf, count * sizeof(u16));
}

static inline int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg,
                    unsigned short mask, unsigned short val)
{
        return regmap_update_bits(wm8994->regmap, reg, mask, val);
}

/* Helper to save on boilerplate */
static inline int wm8994_request_irq(struct wm8994 *wm8994, int irq,
                                     irq_handler_t handler, const char *name,
                                     void *data)
{
        if (!wm8994->irq_data)
                return -EINVAL;
        return request_threaded_irq(regmap_irq_get_virq(wm8994->irq_data, irq),
                                    NULL, handler, IRQF_TRIGGER_RISING, name,
                                    data);
}
static inline void wm8994_free_irq(struct wm8994 *wm8994, int irq, void *data)
{
        if (!wm8994->irq_data)
                return;
        free_irq(regmap_irq_get_virq(wm8994->irq_data, irq), data);
}

int wm8994_irq_init(struct wm8994 *wm8994);
void wm8994_irq_exit(struct wm8994 *wm8994);

#endif