/*
   * Arizona-i2c.c  --  Arizona I2C 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/i2c.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/of.h>

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

  static int arizona_i2c_probe(struct i2c_client *i2c,

  			     const struct i2c_device_id *id)

  {
  	struct arizona *arizona;

  	const struct regmap_config *regmap_config = NULL;

  	unsigned long type;
  	int ret;

  	if (i2c->dev.of_node)
  		type = arizona_of_get_type(&i2c->dev);
  	else
  		type = id->driver_data;
  
  	switch (type) {

  	case WM5102:

  		if (IS_ENABLED(CONFIG_MFD_WM5102))
  			regmap_config = &wm5102_i2c_regmap;

  		break;

  	case WM5110:

  	case WM8280:

  		if (IS_ENABLED(CONFIG_MFD_WM5110))
  			regmap_config = &wm5110_i2c_regmap;

  		break;

  	case WM8997:

  		if (IS_ENABLED(CONFIG_MFD_WM8997))
  			regmap_config = &wm8997_i2c_regmap;

  		break;

  	case WM8998:
  	case WM1814:

  		if (IS_ENABLED(CONFIG_MFD_WM8998))
  			regmap_config = &wm8998_i2c_regmap;

  		break;

  	default:

  		dev_err(&i2c->dev, "Unknown device type %ld
  ", type);

  		return -EINVAL;
  	}

  	if (!regmap_config) {
  		dev_err(&i2c->dev,
  			"No kernel support for device type %ld
  ", type);
  		return -EINVAL;
  	}

  	arizona = devm_kzalloc(&i2c->dev, sizeof(*arizona), GFP_KERNEL);
  	if (arizona == NULL)
  		return -ENOMEM;
  
  	arizona->regmap = devm_regmap_init_i2c(i2c, regmap_config);
  	if (IS_ERR(arizona->regmap)) {
  		ret = PTR_ERR(arizona->regmap);
  		dev_err(&i2c->dev, "Failed to allocate register map: %d
  ",
  			ret);
  		return ret;
  	}

  	arizona->type = type;

  	arizona->dev = &i2c->dev;
  	arizona->irq = i2c->irq;
  
  	return arizona_dev_init(arizona);
  }

  static int arizona_i2c_remove(struct i2c_client *i2c)

  {
  	struct arizona *arizona = dev_get_drvdata(&i2c->dev);

  	arizona_dev_exit(arizona);

  	return 0;
  }
  
  static const struct i2c_device_id arizona_i2c_id[] = {
  	{ "wm5102", WM5102 },

  	{ "wm5110", WM5110 },

  	{ "wm8280", WM8280 },

  	{ "wm8997", WM8997 },

  	{ "wm8998", WM8998 },
  	{ "wm1814", WM1814 },

  	{ }
  };
  MODULE_DEVICE_TABLE(i2c, arizona_i2c_id);
  
  static struct i2c_driver arizona_i2c_driver = {
  	.driver = {
  		.name	= "arizona",

  		.pm	= &arizona_pm_ops,

  		.of_match_table	= of_match_ptr(arizona_of_match),

  	},
  	.probe		= arizona_i2c_probe,

  	.remove		= arizona_i2c_remove,

  	.id_table	= arizona_i2c_id,
  };
  
  module_i2c_driver(arizona_i2c_driver);
  
  MODULE_DESCRIPTION("Arizona I2C bus interface");
  MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");
  MODULE_LICENSE("GPL");