linux-imx

/*

 * arizona-spi.c  --  Arizona SPI bus interface

 *

 * Copyright 2012 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/err.h>

#include <linux/module.h>

#include <linux/pm_runtime.h>

#include <linux/regmap.h>

#include <linux/regulator/consumer.h>

#include <linux/slab.h>

#include <linux/spi/spi.h>

#include <linux/of.h>

​

#include <linux/mfd/arizona/core.h>

​

#include "arizona.h"

​

static int arizona_spi_probe(struct spi_device *spi)

{

    const struct spi_device_id *id = spi_get_device_id(spi);

    struct arizona *arizona;

    const struct regmap_config *regmap_config = NULL;

    unsigned long type;

    int ret;

​

    if (spi->dev.of_node)

        type = arizona_of_get_type(&spi->dev);

    else

        type = id->driver_data;

​

    switch (type) {

    case WM5102:

        if (IS_ENABLED(CONFIG_MFD_WM5102))

            regmap_config = &wm5102_spi_regmap;

        break;

    case WM5110:

    case WM8280:

        if (IS_ENABLED(CONFIG_MFD_WM5110))

            regmap_config = &wm5110_spi_regmap;

        break;

    case WM1831:

    case CS47L24:

        if (IS_ENABLED(CONFIG_MFD_CS47L24))

            regmap_config = &cs47l24_spi_regmap;

        break;

    default:

        dev_err(&spi->dev, "Unknown device type %ld\n", type);

        return -EINVAL;

    }

​

    if (!regmap_config) {

        dev_err(&spi->dev,

            "No kernel support for device type %ld\n", type);

        return -EINVAL;

    }