/*
   * tps65023-regulator.c
   *
   * Supports TPS65023 Regulator
   *
   * Copyright (C) 2009 Texas Instrument Incorporated - http://www.ti.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 version 2.
   *
   * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
   * whether express or implied; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * General Public License for more details.
   */
  
  #include <linux/kernel.h>
  #include <linux/module.h>
  #include <linux/init.h>
  #include <linux/err.h>
  #include <linux/platform_device.h>
  #include <linux/regulator/driver.h>
  #include <linux/regulator/machine.h>
  #include <linux/i2c.h>
  #include <linux/delay.h>

  #include <linux/slab.h>

  #include <linux/regmap.h>

  
  /* Register definitions */
  #define	TPS65023_REG_VERSION		0
  #define	TPS65023_REG_PGOODZ		1
  #define	TPS65023_REG_MASK		2
  #define	TPS65023_REG_REG_CTRL		3
  #define	TPS65023_REG_CON_CTRL		4
  #define	TPS65023_REG_CON_CTRL2		5
  #define	TPS65023_REG_DEF_CORE		6
  #define	TPS65023_REG_DEFSLEW		7
  #define	TPS65023_REG_LDO_CTRL		8
  
  /* PGOODZ bitfields */
  #define	TPS65023_PGOODZ_PWRFAILZ	BIT(7)
  #define	TPS65023_PGOODZ_LOWBATTZ	BIT(6)
  #define	TPS65023_PGOODZ_VDCDC1		BIT(5)
  #define	TPS65023_PGOODZ_VDCDC2		BIT(4)
  #define	TPS65023_PGOODZ_VDCDC3		BIT(3)
  #define	TPS65023_PGOODZ_LDO2		BIT(2)
  #define	TPS65023_PGOODZ_LDO1		BIT(1)
  
  /* MASK bitfields */
  #define	TPS65023_MASK_PWRFAILZ		BIT(7)
  #define	TPS65023_MASK_LOWBATTZ		BIT(6)
  #define	TPS65023_MASK_VDCDC1		BIT(5)
  #define	TPS65023_MASK_VDCDC2		BIT(4)
  #define	TPS65023_MASK_VDCDC3		BIT(3)
  #define	TPS65023_MASK_LDO2		BIT(2)
  #define	TPS65023_MASK_LDO1		BIT(1)
  
  /* REG_CTRL bitfields */
  #define TPS65023_REG_CTRL_VDCDC1_EN	BIT(5)
  #define TPS65023_REG_CTRL_VDCDC2_EN	BIT(4)
  #define TPS65023_REG_CTRL_VDCDC3_EN	BIT(3)
  #define TPS65023_REG_CTRL_LDO2_EN	BIT(2)
  #define TPS65023_REG_CTRL_LDO1_EN	BIT(1)

  /* REG_CTRL2 bitfields */
  #define TPS65023_REG_CTRL2_GO		BIT(7)
  #define TPS65023_REG_CTRL2_CORE_ADJ	BIT(6)
  #define TPS65023_REG_CTRL2_DCDC2	BIT(2)

  #define TPS65023_REG_CTRL2_DCDC1	BIT(1)
  #define TPS65023_REG_CTRL2_DCDC3	BIT(0)

  /* LDO_CTRL bitfields */
  #define TPS65023_LDO_CTRL_LDOx_SHIFT(ldo_id)	((ldo_id)*4)
  #define TPS65023_LDO_CTRL_LDOx_MASK(ldo_id)	(0xF0 >> ((ldo_id)*4))
  
  /* Number of step-down converters available */
  #define TPS65023_NUM_DCDC		3
  /* Number of LDO voltage regulators  available */
  #define TPS65023_NUM_LDO		2
  /* Number of total regulators available */
  #define TPS65023_NUM_REGULATOR	(TPS65023_NUM_DCDC + TPS65023_NUM_LDO)
  
  /* DCDCs */
  #define TPS65023_DCDC_1			0
  #define TPS65023_DCDC_2			1
  #define TPS65023_DCDC_3			2
  /* LDOs */
  #define TPS65023_LDO_1			3
  #define TPS65023_LDO_2			4
  
  #define TPS65023_MAX_REG_ID		TPS65023_LDO_2
  
  /* Supported voltage values for regulators */

  static const u16 VCORE_VSEL_table[] = {

  	800, 825, 850, 875,
  	900, 925, 950, 975,
  	1000, 1025, 1050, 1075,
  	1100, 1125, 1150, 1175,
  	1200, 1225, 1250, 1275,
  	1300, 1325, 1350, 1375,
  	1400, 1425, 1450, 1475,
  	1500, 1525, 1550, 1600,
  };

  /* Supported voltage values for LDO regulators for tps65020 */
  static const u16 TPS65020_LDO1_VSEL_table[] = {
  	1000, 1050, 1100, 1300,
  	1800, 2500, 3000, 3300,
  };

  static const u16 TPS65020_LDO2_VSEL_table[] = {
  	1000, 1050, 1100, 1300,
  	1800, 2500, 3000, 3300,
  };

  
  /* Supported voltage values for LDO regulators
   * for tps65021 and tps65023 */
  static const u16 TPS65023_LDO1_VSEL_table[] = {

  	1000, 1100, 1300, 1800,
  	2200, 2600, 2800, 3150,
  };

  static const u16 TPS65023_LDO2_VSEL_table[] = {

  	1050, 1200, 1300, 1800,
  	2500, 2800, 3000, 3300,
  };

  /* Regulator specific details */
  struct tps_info {
  	const char *name;
  	unsigned min_uV;
  	unsigned max_uV;
  	bool fixed;
  	u8 table_len;
  	const u16 *table;
  };
  
  /* PMIC details */
  struct tps_pmic {
  	struct regulator_desc desc[TPS65023_NUM_REGULATOR];
  	struct i2c_client *client;
  	struct regulator_dev *rdev[TPS65023_NUM_REGULATOR];
  	const struct tps_info *info[TPS65023_NUM_REGULATOR];

  	struct regmap *regmap;

  	u8 core_regulator;
  };
  
  /* Struct passed as driver data */
  struct tps_driver_data {
  	const struct tps_info *info;
  	u8 core_regulator;

  };

  static int tps65023_dcdc_is_enabled(struct regulator_dev *dev)
  {
  	struct tps_pmic *tps = rdev_get_drvdata(dev);
  	int data, dcdc = rdev_get_id(dev);

  	int ret;

  	u8 shift;
  
  	if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
  		return -EINVAL;
  
  	shift = TPS65023_NUM_REGULATOR - dcdc;

  	ret = regmap_read(tps->regmap, TPS65023_REG_REG_CTRL, &data);

  	if (ret != 0)
  		return ret;

  	else
  		return (data & 1<<shift) ? 1 : 0;
  }
  
  static int tps65023_ldo_is_enabled(struct regulator_dev *dev)
  {
  	struct tps_pmic *tps = rdev_get_drvdata(dev);
  	int data, ldo = rdev_get_id(dev);

  	int ret;

  	u8 shift;
  
  	if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
  		return -EINVAL;
  
  	shift = (ldo == TPS65023_LDO_1 ? 1 : 2);

  	ret = regmap_read(tps->regmap, TPS65023_REG_REG_CTRL, &data);

  	if (ret != 0)
  		return ret;

  	else
  		return (data & 1<<shift) ? 1 : 0;
  }
  
  static int tps65023_dcdc_enable(struct regulator_dev *dev)
  {
  	struct tps_pmic *tps = rdev_get_drvdata(dev);
  	int dcdc = rdev_get_id(dev);
  	u8 shift;
  
  	if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
  		return -EINVAL;
  
  	shift = TPS65023_NUM_REGULATOR - dcdc;

  	return regmap_update_bits(tps->regmap, TPS65023_REG_REG_CTRL, 1 << shift, 1 << shift);

  }
  
  static int tps65023_dcdc_disable(struct regulator_dev *dev)
  {
  	struct tps_pmic *tps = rdev_get_drvdata(dev);
  	int dcdc = rdev_get_id(dev);
  	u8 shift;
  
  	if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
  		return -EINVAL;
  
  	shift = TPS65023_NUM_REGULATOR - dcdc;

  	return regmap_update_bits(tps->regmap, TPS65023_REG_REG_CTRL, 1 << shift, 0);

  }
  
  static int tps65023_ldo_enable(struct regulator_dev *dev)
  {
  	struct tps_pmic *tps = rdev_get_drvdata(dev);
  	int ldo = rdev_get_id(dev);
  	u8 shift;
  
  	if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
  		return -EINVAL;
  
  	shift = (ldo == TPS65023_LDO_1 ? 1 : 2);

  	return regmap_update_bits(tps->regmap, TPS65023_REG_REG_CTRL, 1 << shift, 1 << shift);

  }
  
  static int tps65023_ldo_disable(struct regulator_dev *dev)
  {
  	struct tps_pmic *tps = rdev_get_drvdata(dev);
  	int ldo = rdev_get_id(dev);
  	u8 shift;
  
  	if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
  		return -EINVAL;
  
  	shift = (ldo == TPS65023_LDO_1 ? 1 : 2);

  	return regmap_update_bits(tps->regmap, TPS65023_REG_REG_CTRL, 1 << shift, 0);

  }
  
  static int tps65023_dcdc_get_voltage(struct regulator_dev *dev)
  {
  	struct tps_pmic *tps = rdev_get_drvdata(dev);

  	int ret;

  	int data, dcdc = rdev_get_id(dev);
  
  	if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
  		return -EINVAL;

  	if (dcdc == tps->core_regulator) {

  		ret = regmap_read(tps->regmap, TPS65023_REG_DEF_CORE, &data);
  		if (ret != 0)
  			return ret;

  		data &= (tps->info[dcdc]->table_len - 1);
  		return tps->info[dcdc]->table[data] * 1000;
  	} else
  		return tps->info[dcdc]->min_uV;
  }
  
  static int tps65023_dcdc_set_voltage(struct regulator_dev *dev,

  				     int min_uV, int max_uV,
  				     unsigned *selector)

  {
  	struct tps_pmic *tps = rdev_get_drvdata(dev);
  	int dcdc = rdev_get_id(dev);
  	int vsel;

  	int ret;

  	if (dcdc != tps->core_regulator)

  		return -EINVAL;

  	if (min_uV < tps->info[dcdc]->min_uV
  			|| min_uV > tps->info[dcdc]->max_uV)
  		return -EINVAL;
  	if (max_uV < tps->info[dcdc]->min_uV
  			|| max_uV > tps->info[dcdc]->max_uV)
  		return -EINVAL;
  
  	for (vsel = 0; vsel < tps->info[dcdc]->table_len; vsel++) {
  		int mV = tps->info[dcdc]->table[vsel];
  		int uV = mV * 1000;
  
  		/* Break at the first in-range value */
  		if (min_uV <= uV && uV <= max_uV)
  			break;
  	}

  	*selector = vsel;

  	if (vsel == tps->info[dcdc]->table_len)

  		goto failed;

  	ret = regmap_write(tps->regmap, TPS65023_REG_DEF_CORE, vsel);

  
  	/* Tell the chip that we have changed the value in DEFCORE
  	 * and its time to update the core voltage
  	 */

  	regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2,
  			TPS65023_REG_CTRL2_GO, TPS65023_REG_CTRL2_GO);

  
  	return ret;
  
  failed:
  	return -EINVAL;

  }
  
  static int tps65023_ldo_get_voltage(struct regulator_dev *dev)
  {
  	struct tps_pmic *tps = rdev_get_drvdata(dev);
  	int data, ldo = rdev_get_id(dev);

  	int ret;

  
  	if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
  		return -EINVAL;

  	ret = regmap_read(tps->regmap, TPS65023_REG_LDO_CTRL, &data);
  	if (ret != 0)
  		return ret;

  
  	data >>= (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1));
  	data &= (tps->info[ldo]->table_len - 1);
  	return tps->info[ldo]->table[data] * 1000;
  }
  
  static int tps65023_ldo_set_voltage(struct regulator_dev *dev,

  				    int min_uV, int max_uV, unsigned *selector)

  {
  	struct tps_pmic *tps = rdev_get_drvdata(dev);
  	int data, vsel, ldo = rdev_get_id(dev);

  	int ret;

  
  	if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
  		return -EINVAL;
  
  	if (min_uV < tps->info[ldo]->min_uV || min_uV > tps->info[ldo]->max_uV)
  		return -EINVAL;
  	if (max_uV < tps->info[ldo]->min_uV || max_uV > tps->info[ldo]->max_uV)
  		return -EINVAL;
  
  	for (vsel = 0; vsel < tps->info[ldo]->table_len; vsel++) {
  		int mV = tps->info[ldo]->table[vsel];
  		int uV = mV * 1000;
  
  		/* Break at the first in-range value */
  		if (min_uV <= uV && uV <= max_uV)
  			break;
  	}
  
  	if (vsel == tps->info[ldo]->table_len)
  		return -EINVAL;

  	*selector = vsel;

  	ret = regmap_read(tps->regmap, TPS65023_REG_LDO_CTRL, &data);
  	if (ret != 0)
  		return ret;

  
  	data &= TPS65023_LDO_CTRL_LDOx_MASK(ldo - TPS65023_LDO_1);
  	data |= (vsel << (TPS65023_LDO_CTRL_LDOx_SHIFT(ldo - TPS65023_LDO_1)));

  	return regmap_write(tps->regmap, TPS65023_REG_LDO_CTRL, data);

  }
  
  static int tps65023_dcdc_list_voltage(struct regulator_dev *dev,
  					unsigned selector)
  {
  	struct tps_pmic *tps = rdev_get_drvdata(dev);
  	int dcdc = rdev_get_id(dev);
  
  	if (dcdc < TPS65023_DCDC_1 || dcdc > TPS65023_DCDC_3)
  		return -EINVAL;

  	if (dcdc == tps->core_regulator) {

  		if (selector >= tps->info[dcdc]->table_len)
  			return -EINVAL;
  		else
  			return tps->info[dcdc]->table[selector] * 1000;
  	} else
  		return tps->info[dcdc]->min_uV;
  }
  
  static int tps65023_ldo_list_voltage(struct regulator_dev *dev,
  					unsigned selector)
  {
  	struct tps_pmic *tps = rdev_get_drvdata(dev);
  	int ldo = rdev_get_id(dev);
  
  	if (ldo < TPS65023_LDO_1 || ldo > TPS65023_LDO_2)
  		return -EINVAL;
  
  	if (selector >= tps->info[ldo]->table_len)
  		return -EINVAL;
  	else
  		return tps->info[ldo]->table[selector] * 1000;
  }
  
  /* Operations permitted on VDCDCx */
  static struct regulator_ops tps65023_dcdc_ops = {
  	.is_enabled = tps65023_dcdc_is_enabled,
  	.enable = tps65023_dcdc_enable,
  	.disable = tps65023_dcdc_disable,
  	.get_voltage = tps65023_dcdc_get_voltage,
  	.set_voltage = tps65023_dcdc_set_voltage,
  	.list_voltage = tps65023_dcdc_list_voltage,
  };
  
  /* Operations permitted on LDOx */
  static struct regulator_ops tps65023_ldo_ops = {
  	.is_enabled = tps65023_ldo_is_enabled,
  	.enable = tps65023_ldo_enable,
  	.disable = tps65023_ldo_disable,
  	.get_voltage = tps65023_ldo_get_voltage,
  	.set_voltage = tps65023_ldo_set_voltage,
  	.list_voltage = tps65023_ldo_list_voltage,
  };

  static struct regmap_config tps65023_regmap_config = {
  	.reg_bits = 8,
  	.val_bits = 8,
  };

  static int __devinit tps_65023_probe(struct i2c_client *client,
  				     const struct i2c_device_id *id)

  {

  	const struct tps_driver_data *drv_data = (void *)id->driver_data;
  	const struct tps_info *info = drv_data->info;

  	struct regulator_init_data *init_data;
  	struct regulator_dev *rdev;
  	struct tps_pmic *tps;
  	int i;

  	int error;

  
  	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
  		return -EIO;
  
  	/**
  	 * init_data points to array of regulator_init structures
  	 * coming from the board-evm file.
  	 */
  	init_data = client->dev.platform_data;

  	if (!init_data)
  		return -EIO;
  
  	tps = kzalloc(sizeof(*tps), GFP_KERNEL);
  	if (!tps)
  		return -ENOMEM;

  	tps->regmap = regmap_init_i2c(client, &tps65023_regmap_config);
  	if (IS_ERR(tps->regmap)) {
  		error = PTR_ERR(tps->regmap);
  		dev_err(&client->dev, "Failed to allocate register map: %d
  ",
  			error);
  		goto fail_alloc;
  	}

  
  	/* common for all regulators */
  	tps->client = client;

  	tps->core_regulator = drv_data->core_regulator;

  
  	for (i = 0; i < TPS65023_NUM_REGULATOR; i++, info++, init_data++) {
  		/* Store regulator specific information */
  		tps->info[i] = info;
  
  		tps->desc[i].name = info->name;

  		tps->desc[i].id = i;

  		tps->desc[i].n_voltages = info->table_len;

  		tps->desc[i].ops = (i > TPS65023_DCDC_3 ?
  					&tps65023_ldo_ops : &tps65023_dcdc_ops);
  		tps->desc[i].type = REGULATOR_VOLTAGE;
  		tps->desc[i].owner = THIS_MODULE;
  
  		/* Register the regulators */
  		rdev = regulator_register(&tps->desc[i], &client->dev,

  					  init_data, tps, NULL);

  		if (IS_ERR(rdev)) {
  			dev_err(&client->dev, "failed to register %s
  ",
  				id->name);

  			error = PTR_ERR(rdev);
  			goto fail;

  		}
  
  		/* Save regulator for cleanup */
  		tps->rdev[i] = rdev;
  	}
  
  	i2c_set_clientdata(client, tps);

  	/* Enable setting output voltage by I2C */

  	regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2,
  			TPS65023_REG_CTRL2_CORE_ADJ, TPS65023_REG_CTRL2_CORE_ADJ);

  	/* Enable setting output voltage by I2C */

  	regmap_update_bits(tps->regmap, TPS65023_REG_CON_CTRL2,
  			TPS65023_REG_CTRL2_CORE_ADJ, TPS65023_REG_CTRL2_CORE_ADJ);

  	return 0;

  
   fail:
  	while (--i >= 0)
  		regulator_unregister(tps->rdev[i]);

  	regmap_exit(tps->regmap);
   fail_alloc:

  	kfree(tps);
  	return error;

  }
  
  /**
   * tps_65023_remove - TPS65023 driver i2c remove handler
   * @client: i2c driver client device structure
   *
   * Unregister TPS driver as an i2c client device driver
   */
  static int __devexit tps_65023_remove(struct i2c_client *client)
  {
  	struct tps_pmic *tps = i2c_get_clientdata(client);
  	int i;
  
  	for (i = 0; i < TPS65023_NUM_REGULATOR; i++)
  		regulator_unregister(tps->rdev[i]);

  	regmap_exit(tps->regmap);

  	kfree(tps);
  
  	return 0;
  }

  static const struct tps_info tps65020_regs[] = {
  	{
  		.name = "VDCDC1",
  		.min_uV = 3300000,
  		.max_uV = 3300000,
  		.fixed	= 1,
  	},
  	{
  		.name = "VDCDC2",
  		.min_uV =  1800000,
  		.max_uV = 1800000,
  		.fixed = 1,
  	},
  	{
  		.name = "VDCDC3",
  		.min_uV =  800000,
  		.max_uV = 1600000,
  		.table_len = ARRAY_SIZE(VCORE_VSEL_table),
  		.table = VCORE_VSEL_table,
  	},
  
  	{
  		.name = "LDO1",
  		.min_uV = 1000000,
  		.max_uV = 3150000,
  		.table_len = ARRAY_SIZE(TPS65020_LDO1_VSEL_table),
  		.table = TPS65020_LDO1_VSEL_table,
  	},
  	{
  		.name = "LDO2",
  		.min_uV = 1050000,
  		.max_uV = 3300000,
  		.table_len = ARRAY_SIZE(TPS65020_LDO2_VSEL_table),
  		.table = TPS65020_LDO2_VSEL_table,
  	},
  };

  static const struct tps_info tps65021_regs[] = {
  	{
  		.name = "VDCDC1",
  		.min_uV =  3300000,
  		.max_uV = 3300000,
  		.fixed = 1,
  	},
  	{
  		.name = "VDCDC2",
  		.min_uV =  1800000,
  		.max_uV = 1800000,
  		.fixed = 1,
  	},
  	{
  		.name = "VDCDC3",
  		.min_uV =  800000,
  		.max_uV = 1600000,
  		.table_len = ARRAY_SIZE(VCORE_VSEL_table),
  		.table = VCORE_VSEL_table,
  	},
  	{
  		.name = "LDO1",
  		.min_uV = 1000000,
  		.max_uV = 3150000,
  		.table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table),
  		.table = TPS65023_LDO1_VSEL_table,
  	},
  	{
  		.name = "LDO2",
  		.min_uV = 1050000,
  		.max_uV = 3300000,
  		.table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table),
  		.table = TPS65023_LDO2_VSEL_table,
  	},
  };

  static const struct tps_info tps65023_regs[] = {
  	{
  		.name = "VDCDC1",
  		.min_uV =  800000,
  		.max_uV = 1600000,

  		.table_len = ARRAY_SIZE(VCORE_VSEL_table),
  		.table = VCORE_VSEL_table,

  	},
  	{
  		.name = "VDCDC2",
  		.min_uV =  3300000,
  		.max_uV = 3300000,
  		.fixed = 1,
  	},
  	{
  		.name = "VDCDC3",
  		.min_uV =  1800000,
  		.max_uV = 1800000,
  		.fixed = 1,
  	},
  	{
  		.name = "LDO1",
  		.min_uV = 1000000,
  		.max_uV = 3150000,

  		.table_len = ARRAY_SIZE(TPS65023_LDO1_VSEL_table),
  		.table = TPS65023_LDO1_VSEL_table,

  	},
  	{
  		.name = "LDO2",
  		.min_uV = 1050000,
  		.max_uV = 3300000,

  		.table_len = ARRAY_SIZE(TPS65023_LDO2_VSEL_table),
  		.table = TPS65023_LDO2_VSEL_table,

  	},
  };

  static struct tps_driver_data tps65020_drv_data = {
  	.info = tps65020_regs,
  	.core_regulator = TPS65023_DCDC_3,
  };

  static struct tps_driver_data tps65021_drv_data = {
  		.info = tps65021_regs,
  		.core_regulator = TPS65023_DCDC_3,
  };
  
  static struct tps_driver_data tps65023_drv_data = {
  		.info = tps65023_regs,
  		.core_regulator = TPS65023_DCDC_1,
  };

  static const struct i2c_device_id tps_65023_id[] = {
  	{.name = "tps65023",

  	.driver_data = (unsigned long) &tps65023_drv_data},

  	{.name = "tps65021",

  	.driver_data = (unsigned long) &tps65021_drv_data,},

  	{.name = "tps65020",
  	.driver_data = (unsigned long) &tps65020_drv_data},

  	{ },

  };
  
  MODULE_DEVICE_TABLE(i2c, tps_65023_id);
  
  static struct i2c_driver tps_65023_i2c_driver = {
  	.driver = {
  		.name = "tps65023",
  		.owner = THIS_MODULE,
  	},
  	.probe = tps_65023_probe,
  	.remove = __devexit_p(tps_65023_remove),

  	.id_table = tps_65023_id,

  };
  
  /**
   * tps_65023_init
   *
   * Module init function
   */
  static int __init tps_65023_init(void)
  {
  	return i2c_add_driver(&tps_65023_i2c_driver);
  }
  subsys_initcall(tps_65023_init);
  
  /**
   * tps_65023_cleanup
   *
   * Module exit function
   */
  static void __exit tps_65023_cleanup(void)
  {
  	i2c_del_driver(&tps_65023_i2c_driver);
  }
  module_exit(tps_65023_cleanup);
  
  MODULE_AUTHOR("Texas Instruments");
  MODULE_DESCRIPTION("TPS65023 voltage regulator driver");

  MODULE_LICENSE("GPL v2");