[mirror_ubuntu-artful-kernel.git] / drivers / regulator / tps65910-regulator.c

/*
 * tps65910.c  --  TI tps65910
 *
 * Copyright 2010 Texas Instruments Inc.
 *
 * Author: Graeme Gregory <gg@slimlogic.co.uk>
 * Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>
 *
 *  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.
 *
 */

#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/delay.h>
#include <linux/slab.h>
#include <linux/gpio.h>
#include <linux/mfd/tps65910.h>

#define TPS65910_REG_VRTC		0
#define TPS65910_REG_VIO		1
#define TPS65910_REG_VDD1		2
#define TPS65910_REG_VDD2		3
#define TPS65910_REG_VDD3		4
#define TPS65910_REG_VDIG1		5
#define TPS65910_REG_VDIG2		6
#define TPS65910_REG_VPLL		7
#define TPS65910_REG_VDAC		8
#define TPS65910_REG_VAUX1		9
#define TPS65910_REG_VAUX2		10
#define TPS65910_REG_VAUX33		11
#define TPS65910_REG_VMMC		12

#define TPS65910_NUM_REGULATOR		13

#define TPS65910_SUPPLY_STATE_ENABLED	0x1

/* supported VIO voltages in milivolts */
static const u16 VIO_VSEL_table[] = {
	1500, 1800, 2500, 3300,
};

/* supported VIO voltages in milivolts */
static const u16 VDD3_VSEL_table[] = {
	5000,
};

/* supported VDIG1 voltages in milivolts */
static const u16 VDIG1_VSEL_table[] = {
	1200, 1500, 1800, 2700,
};

/* supported VDIG2 voltages in milivolts */
static const u16 VDIG2_VSEL_table[] = {
	1000, 1100, 1200, 1800,
};

/* supported VPLL voltages in milivolts */
static const u16 VPLL_VSEL_table[] = {
	1000, 1100, 1800, 2500,
};

/* supported VDAC voltages in milivolts */
static const u16 VDAC_VSEL_table[] = {
	1800, 2600, 2800, 2850,
};

/* supported VAUX1 voltages in milivolts */
static const u16 VAUX1_VSEL_table[] = {
	1800, 2500, 2800, 2850,
};

/* supported VAUX2 voltages in milivolts */
static const u16 VAUX2_VSEL_table[] = {
	1800, 2800, 2900, 3300,
};

/* supported VAUX33 voltages in milivolts */
static const u16 VAUX33_VSEL_table[] = {
	1800, 2000, 2800, 3300,
};

/* supported VMMC voltages in milivolts */
static const u16 VMMC_VSEL_table[] = {
	1800, 2800, 3000, 3300,
};

struct tps_info {
	const char *name;
	unsigned min_uV;
	unsigned max_uV;
	u8 table_len;
	const u16 *table;
};

static struct tps_info tps65910_regs[] = {
	{
		.name = "VRTC",
	},
	{
		.name = "VIO",
		.min_uV = 1500000,
		.max_uV = 3300000,
		.table_len = ARRAY_SIZE(VIO_VSEL_table),
		.table = VIO_VSEL_table,
	},
	{
		.name = "VDD1",
		.min_uV = 600000,
		.max_uV = 4500000,
	},
	{
		.name = "VDD2",
		.min_uV = 600000,
		.max_uV = 4500000,
	},
	{
		.name = "VDD3",
		.min_uV = 5000000,
		.max_uV = 5000000,
		.table_len = ARRAY_SIZE(VDD3_VSEL_table),
		.table = VDD3_VSEL_table,
	},
	{
		.name = "VDIG1",
		.min_uV = 1200000,
		.max_uV = 2700000,
		.table_len = ARRAY_SIZE(VDIG1_VSEL_table),
		.table = VDIG1_VSEL_table,
	},
	{
		.name = "VDIG2",
		.min_uV = 1000000,
		.max_uV = 1800000,
		.table_len = ARRAY_SIZE(VDIG2_VSEL_table),
		.table = VDIG2_VSEL_table,
	},
	{
		.name = "VPLL",
		.min_uV = 1000000,
		.max_uV = 2500000,
		.table_len = ARRAY_SIZE(VPLL_VSEL_table),
		.table = VPLL_VSEL_table,
	},
	{
		.name = "VDAC",
		.min_uV = 1800000,
		.max_uV = 2850000,
		.table_len = ARRAY_SIZE(VDAC_VSEL_table),
		.table = VDAC_VSEL_table,
	},
	{
		.name = "VAUX1",
		.min_uV = 1800000,
		.max_uV = 2850000,
		.table_len = ARRAY_SIZE(VAUX1_VSEL_table),
		.table = VAUX1_VSEL_table,
	},
	{
		.name = "VAUX2",
		.min_uV = 1800000,
		.max_uV = 3300000,
		.table_len = ARRAY_SIZE(VAUX2_VSEL_table),
		.table = VAUX2_VSEL_table,
	},
	{
		.name = "VAUX33",
		.min_uV = 1800000,
		.max_uV = 3300000,
		.table_len = ARRAY_SIZE(VAUX33_VSEL_table),
		.table = VAUX33_VSEL_table,
	},
	{
		.name = "VMMC",
		.min_uV = 1800000,
		.max_uV = 3300000,
		.table_len = ARRAY_SIZE(VMMC_VSEL_table),
		.table = VMMC_VSEL_table,
	},
};

struct tps65910_reg {
	struct regulator_desc desc[TPS65910_NUM_REGULATOR];
	struct tps65910 *mfd;
	struct regulator_dev *rdev[TPS65910_NUM_REGULATOR];
	struct tps_info *info[TPS65910_NUM_REGULATOR];
	struct mutex mutex;
	int mode;
};

static inline int tps65910_read(struct tps65910_reg *pmic, u8 reg)
{
	u8 val;
	int err;

	err = pmic->mfd->read(pmic->mfd, reg, 1, &val);
	if (err)
		return err;

	return val;
}

static inline int tps65910_write(struct tps65910_reg *pmic, u8 reg, u8 val)
{
	return pmic->mfd->write(pmic->mfd, reg, 1, &val);
}

static int tps65910_modify_bits(struct tps65910_reg *pmic, u8 reg,
					u8 set_mask, u8 clear_mask)
{
	int err, data;

	mutex_lock(&pmic->mutex);

	data = tps65910_read(pmic, reg);
	if (data < 0) {
		dev_err(pmic->mfd->dev, "Read from reg 0x%x failed\n", reg);
		err = data;
		goto out;
	}

	data &= ~clear_mask;
	data |= set_mask;
	err = tps65910_write(pmic, reg, data);
	if (err)
		dev_err(pmic->mfd->dev, "Write for reg 0x%x failed\n", reg);

out:
	mutex_unlock(&pmic->mutex);
	return err;
}

static int tps65910_reg_read(struct tps65910_reg *pmic, u8 reg)
{
	int data;

	mutex_lock(&pmic->mutex);

	data = tps65910_read(pmic, reg);
	if (data < 0)
		dev_err(pmic->mfd->dev, "Read from reg 0x%x failed\n", reg);

	mutex_unlock(&pmic->mutex);
	return data;
}

static int tps65910_reg_write(struct tps65910_reg *pmic, u8 reg, u8 val)
{
	int err;

	mutex_lock(&pmic->mutex);

	err = tps65910_write(pmic, reg, val);
	if (err < 0)
		dev_err(pmic->mfd->dev, "Write for reg 0x%x failed\n", reg);

	mutex_unlock(&pmic->mutex);
	return err;
}

static int tps65910_get_ctrl_register(int id)
{
	switch (id) {
	case TPS65910_REG_VRTC:
		return TPS65910_VRTC;
	case TPS65910_REG_VIO:
		return TPS65910_VIO;
	case TPS65910_REG_VDD1:
		return TPS65910_VDD1;
	case TPS65910_REG_VDD2:
		return TPS65910_VDD2;
	case TPS65910_REG_VDD3:
		return TPS65910_VDD3;
	case TPS65910_REG_VDIG1:
		return TPS65910_VDIG1;
	case TPS65910_REG_VDIG2:
		return TPS65910_VDIG2;
	case TPS65910_REG_VPLL:
		return TPS65910_VPLL;
	case TPS65910_REG_VDAC:
		return TPS65910_VDAC;
	case TPS65910_REG_VAUX1:
		return TPS65910_VAUX1;
	case TPS65910_REG_VAUX2:
		return TPS65910_VAUX2;
	case TPS65910_REG_VAUX33:
		return TPS65910_VAUX33;
	case TPS65910_REG_VMMC:
		return TPS65910_VMMC;
	default:
		return -EINVAL;
	}
}

static int tps65910_is_enabled(struct regulator_dev *dev)
{
	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
	int reg, value, id = rdev_get_id(dev);

	reg = tps65910_get_ctrl_register(id);
	if (reg < 0)
		return reg;

	value = tps65910_reg_read(pmic, reg);
	if (value < 0)
		return value;

	return value & TPS65910_SUPPLY_STATE_ENABLED;
}

static int tps65910_enable(struct regulator_dev *dev)
{
	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
	struct tps65910 *mfd = pmic->mfd;
	int reg, id = rdev_get_id(dev);

	reg = tps65910_get_ctrl_register(id);
	if (reg < 0)
		return reg;

	return tps65910_set_bits(mfd, reg, TPS65910_SUPPLY_STATE_ENABLED);
}

static int tps65910_disable(struct regulator_dev *dev)
{
	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
	struct tps65910 *mfd = pmic->mfd;
	int reg, id = rdev_get_id(dev);

	reg = tps65910_get_ctrl_register(id);
	if (reg < 0)
		return reg;

	return tps65910_clear_bits(mfd, reg, TPS65910_SUPPLY_STATE_ENABLED);
}


static int tps65910_set_mode(struct regulator_dev *dev, unsigned int mode)
{
	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
	struct tps65910 *mfd = pmic->mfd;
	int reg, value, id = rdev_get_id(dev);
	reg = tps65910_get_ctrl_register(id);
	if (reg < 0)
		return reg;

	switch (mode) {
	case REGULATOR_MODE_NORMAL:
		return tps65910_modify_bits(pmic, reg, LDO_ST_ON_BIT,
							LDO_ST_MODE_BIT);
	case REGULATOR_MODE_IDLE:
		value = LDO_ST_ON_BIT | LDO_ST_MODE_BIT;
		return tps65910_set_bits(mfd, reg, value);
	case REGULATOR_MODE_STANDBY:
		return tps65910_clear_bits(mfd, reg, LDO_ST_ON_BIT);
	}

	return -EINVAL;
}

static unsigned int tps65910_get_mode(struct regulator_dev *dev)
{
	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
	int reg, value, id = rdev_get_id(dev);

	reg = tps65910_get_ctrl_register(id);
	if (reg < 0)
		return reg;

	value = tps65910_reg_read(pmic, reg);
	if (value < 0)
		return value;

	if (value & LDO_ST_ON_BIT)
		return REGULATOR_MODE_STANDBY;
	else if (value & LDO_ST_MODE_BIT)
		return REGULATOR_MODE_IDLE;
	else
		return REGULATOR_MODE_NORMAL;
}

static int tps65910_get_voltage_dcdc(struct regulator_dev *dev)
{
	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
	int id = rdev_get_id(dev), voltage = 0;
	int opvsel = 0, srvsel = 0, mult = 0, sr = 0;

	switch (id) {
	case TPS65910_REG_VDD1:
		opvsel = tps65910_reg_read(pmic, TPS65910_VDD1_OP);
		mult = tps65910_reg_read(pmic, TPS65910_VDD1);
		mult = (mult & VDD1_VGAIN_SEL_MASK) >> VDD1_VGAIN_SEL_SHIFT;
		srvsel = tps65910_reg_read(pmic, TPS65910_VDD1_SR);
		sr = opvsel & VDD1_OP_CMD_MASK;
		opvsel &= VDD1_OP_SEL_MASK;
		srvsel &= VDD1_SR_SEL_MASK;
		break;
	case TPS65910_REG_VDD2:
		opvsel = tps65910_reg_read(pmic, TPS65910_VDD2_OP);
		mult = tps65910_reg_read(pmic, TPS65910_VDD2);
		mult = (mult & VDD2_VGAIN_SEL_MASK) >> VDD2_VGAIN_SEL_SHIFT;
		srvsel = tps65910_reg_read(pmic, TPS65910_VDD2_SR);
		sr = opvsel & VDD2_OP_CMD_MASK;
		opvsel &= VDD2_OP_SEL_MASK;
		srvsel &= VDD2_SR_SEL_MASK;
		break;
	}

	/* multiplier 0 == 1 but 2,3 normal */
	if (!mult)
		mult=1;

	if (sr) {
		/* Valid range is 3-75 so normalise */
		if (srvsel < 3) srvsel = 3;
		if (srvsel > 75) srvsel = 75;
		srvsel -= 3;

		voltage = (srvsel * VDD1_2_OFFSET + VDD1_2_MIN_VOLT) * 100;
	} else {

		/* Valid range is 3-75 so normalise */
		if (opvsel < 3) opvsel = 3;
		if (opvsel > 75) opvsel = 75;
		opvsel -= 3;

		voltage = (opvsel * VDD1_2_OFFSET + VDD1_2_MIN_VOLT) * 100;
	}

	voltage *= mult;

	return voltage;
}

static int tps65910_get_voltage(struct regulator_dev *dev)
{
	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
	int reg, value, id = rdev_get_id(dev), voltage = 0;

	reg = tps65910_get_ctrl_register(id);
	if (reg < 0)
		return reg;

	value = tps65910_reg_read(pmic, reg);
	if (value < 0)
		return value;

	switch (id) {
	case TPS65910_REG_VIO:
	case TPS65910_REG_VDIG1:
	case TPS65910_REG_VDIG2:
	case TPS65910_REG_VPLL:
	case TPS65910_REG_VDAC:
	case TPS65910_REG_VAUX1:
	case TPS65910_REG_VAUX2:
	case TPS65910_REG_VAUX33:
	case TPS65910_REG_VMMC:
		value &= LDO_SEL_MASK;
		value >>= LDO_SEL_SHIFT;
		break;
	default:
		return -EINVAL;
	}

	voltage = pmic->info[id]->table[value] * 1000;

	return voltage;
}

static int tps65910_get_voltage_vdd3(struct regulator_dev *dev)
{
	return 5 * 1000 * 1000;
}

static int tps65910_set_voltage_dcdc(struct regulator_dev *dev,
				unsigned selector)
{
	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
	int id = rdev_get_id(dev), vsel;
	int dcdc_mult;

	/* Split vsel into appropriate registers */
	dcdc_mult = (selector / VDD1_2_NUM_VOLTS) + 1;
	if (dcdc_mult == 1) dcdc_mult--;

	vsel = (selector % VDD1_2_NUM_VOLTS) + 3;

	if (id == TPS65910_REG_VDD1) {
		tps65910_modify_bits(pmic, TPS65910_VDD1,
				(dcdc_mult << VDD1_VGAIN_SEL_SHIFT),
						VDD1_VGAIN_SEL_MASK);
		tps65910_reg_write(pmic, TPS65910_VDD1_OP, vsel);
	} else {
		tps65910_modify_bits(pmic, TPS65910_VDD2,
				(dcdc_mult << VDD2_VGAIN_SEL_SHIFT),
						VDD1_VGAIN_SEL_MASK);
		tps65910_reg_write(pmic, TPS65910_VDD2_OP, vsel);
	}

	return 0;
}

static int tps65910_set_voltage(struct regulator_dev *dev, unsigned selector)
{
	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
	int reg, id = rdev_get_id(dev);

	reg = tps65910_get_ctrl_register(id);
	if (reg < 0)
		return reg;

	switch (id) {
	case TPS65910_REG_VIO:
	case TPS65910_REG_VDIG1:
	case TPS65910_REG_VDIG2:
	case TPS65910_REG_VPLL:
	case TPS65910_REG_VDAC:
	case TPS65910_REG_VAUX1:
	case TPS65910_REG_VAUX2:
	case TPS65910_REG_VAUX33:
	case TPS65910_REG_VMMC:
		return tps65910_modify_bits(pmic, reg,
				(selector << LDO_SEL_SHIFT), LDO_SEL_MASK);
	}

	return -EINVAL;
}

static int tps65910_list_voltage_dcdc(struct regulator_dev *dev,
					unsigned selector)
{
	int mult, volt;

	mult = (selector / VDD1_2_NUM_VOLTS) + 1;

	volt = VDD1_2_MIN_VOLT + (selector % VDD1_2_NUM_VOLTS) * VDD1_2_OFFSET;

	return  volt * 100 * mult;
}

static int tps65910_list_voltage(struct regulator_dev *dev,
					unsigned selector)
{
	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
	int id = rdev_get_id(dev), voltage;

	if (id < TPS65910_REG_VIO || id > TPS65910_REG_VMMC)
		return -EINVAL;

	if (selector >= pmic->info[id]->table_len)
		return -EINVAL;
	else
		voltage = pmic->info[id]->table[selector] * 1000;

	return voltage;
}

/* Regulator ops (except VRTC) */
static struct regulator_ops tps65910_ops_dcdc = {
	.is_enabled		= tps65910_is_enabled,
	.enable			= tps65910_enable,
	.disable		= tps65910_disable,
	.set_mode		= tps65910_set_mode,
	.get_mode		= tps65910_get_mode,
	.get_voltage		= tps65910_get_voltage_dcdc,
	.set_voltage_sel	= tps65910_set_voltage_dcdc,
	.list_voltage		= tps65910_list_voltage_dcdc,
};

static struct regulator_ops tps65910_ops_vdd3 = {
	.is_enabled		= tps65910_is_enabled,
	.enable			= tps65910_enable,
	.disable		= tps65910_disable,
	.set_mode		= tps65910_set_mode,
	.get_mode		= tps65910_get_mode,
	.get_voltage		= tps65910_get_voltage_vdd3,
	.list_voltage		= tps65910_list_voltage,
};

static struct regulator_ops tps65910_ops = {
	.is_enabled		= tps65910_is_enabled,
	.enable			= tps65910_enable,
	.disable		= tps65910_disable,
	.set_mode		= tps65910_set_mode,
	.get_mode		= tps65910_get_mode,
	.get_voltage		= tps65910_get_voltage,
	.set_voltage_sel	= tps65910_set_voltage,
	.list_voltage		= tps65910_list_voltage,
};

static __devinit int tps65910_probe(struct platform_device *pdev)
{
	struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
	struct tps_info *info = tps65910_regs;
	struct regulator_init_data *reg_data;
	struct regulator_dev *rdev;
	struct tps65910_reg *pmic;
	struct tps65910_board *pmic_plat_data;
	int i, err;

	pmic_plat_data = dev_get_platdata(tps65910->dev);
	if (!pmic_plat_data)
		return -EINVAL;

	reg_data = pmic_plat_data->tps65910_pmic_init_data;

	pmic = kzalloc(sizeof(*pmic), GFP_KERNEL);
	if (!pmic)
		return -ENOMEM;

	mutex_init(&pmic->mutex);
	pmic->mfd = tps65910;
	platform_set_drvdata(pdev, pmic);

	/* Give control of all register to control port */
	tps65910_set_bits(pmic->mfd, TPS65910_DEVCTRL,
				DEVCTRL_SR_CTL_I2C_SEL_MASK);

	for (i = 0; i < TPS65910_NUM_REGULATOR; i++, info++, reg_data++) {
		/* Register the regulators */
		pmic->info[i] = info;

		pmic->desc[i].name = info->name;
		pmic->desc[i].id = i;
		pmic->desc[i].n_voltages = info->table_len;

		if ((i == TPS65910_REG_VDD1) || (i == TPS65910_REG_VDD2))
			pmic->desc[i].ops = &tps65910_ops_dcdc;
		else if (i == TPS65910_REG_VDD3)
			pmic->desc[i].ops = &tps65910_ops_vdd3;
		else
			pmic->desc[i].ops = &tps65910_ops;

		pmic->desc[i].type = REGULATOR_VOLTAGE;
		pmic->desc[i].owner = THIS_MODULE;

		rdev = regulator_register(&pmic->desc[i],
				tps65910->dev, reg_data, pmic);
		if (IS_ERR(rdev)) {
			dev_err(tps65910->dev,
				"failed to register %s regulator\n",
				pdev->name);
			err = PTR_ERR(rdev);
			goto err;
		}

		/* Save regulator for cleanup */
		pmic->rdev[i] = rdev;
	}
	return 0;

err:
	while (--i >= 0)
		regulator_unregister(pmic->rdev[i]);

	kfree(pmic);
	return err;
}

static int __devexit tps65910_remove(struct platform_device *pdev)
{
	struct tps65910_reg *tps65910_reg = platform_get_drvdata(pdev);
	int i;

	for (i = 0; i < TPS65910_NUM_REGULATOR; i++)
		regulator_unregister(tps65910_reg->rdev[i]);

	kfree(tps65910_reg);
	return 0;
}

static struct platform_driver tps65910_driver = {
	.driver = {
		.name = "tps65910-pmic",
		.owner = THIS_MODULE,
	},
	.probe = tps65910_probe,
	.remove = __devexit_p(tps65910_remove),
};

static int __init tps65910_init(void)
{
	return platform_driver_register(&tps65910_driver);
}
subsys_initcall(tps65910_init);

static void __exit tps65910_cleanup(void)
{
	platform_driver_unregister(&tps65910_driver);
}
module_exit(tps65910_cleanup);

MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
MODULE_DESCRIPTION("TPS6507x voltage regulator driver");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:tps65910-pmic");
Commit	Line	Data
518fb721 GG	1	/*
	2	* tps65910.c -- TI tps65910
	3	*
	4	* Copyright 2010 Texas Instruments Inc.
	5	*
	6	* Author: Graeme Gregory <gg@slimlogic.co.uk>
	7	* Author: Jorge Eduardo Candelaria <jedu@slimlogic.co.uk>
	8	*
	9	* This program is free software; you can redistribute it and/or modify it
	10	* under the terms of the GNU General Public License as published by the
	11	* Free Software Foundation; either version 2 of the License, or (at your
	12	* option) any later version.
	13	*
	14	*/
	15
	16	#include <linux/kernel.h>
	17	#include <linux/module.h>
	18	#include <linux/init.h>
	19	#include <linux/err.h>
	20	#include <linux/platform_device.h>
	21	#include <linux/regulator/driver.h>
	22	#include <linux/regulator/machine.h>
	23	#include <linux/delay.h>
	24	#include <linux/slab.h>
	25	#include <linux/gpio.h>
	26	#include <linux/mfd/tps65910.h>
	27
	28	#define TPS65910_REG_VRTC 0
	29	#define TPS65910_REG_VIO 1
	30	#define TPS65910_REG_VDD1 2
	31	#define TPS65910_REG_VDD2 3
	32	#define TPS65910_REG_VDD3 4
	33	#define TPS65910_REG_VDIG1 5
	34	#define TPS65910_REG_VDIG2 6
	35	#define TPS65910_REG_VPLL 7
	36	#define TPS65910_REG_VDAC 8
	37	#define TPS65910_REG_VAUX1 9
	38	#define TPS65910_REG_VAUX2 10
	39	#define TPS65910_REG_VAUX33 11
	40	#define TPS65910_REG_VMMC 12
	41
	42	#define TPS65910_NUM_REGULATOR 13
	43
	44	#define TPS65910_SUPPLY_STATE_ENABLED 0x1
	45
	46	/* supported VIO voltages in milivolts */
	47	static const u16 VIO_VSEL_table[] = {
	48	1500, 1800, 2500, 3300,
	49	};
	50
	51	/* supported VIO voltages in milivolts */
	52	static const u16 VDD3_VSEL_table[] = {
	53	5000,
	54	};
	55
	56	/* supported VDIG1 voltages in milivolts */
	57	static const u16 VDIG1_VSEL_table[] = {
	58	1200, 1500, 1800, 2700,
	59	};
	60
	61	/* supported VDIG2 voltages in milivolts */
	62	static const u16 VDIG2_VSEL_table[] = {
	63	1000, 1100, 1200, 1800,
	64	};
65
66	/* supported VPLL voltages in milivolts */
67	static const u16 VPLL_VSEL_table[] = {
68	1000, 1100, 1800, 2500,
69	};
70
71	/* supported VDAC voltages in milivolts */
72	static const u16 VDAC_VSEL_table[] = {
73	1800, 2600, 2800, 2850,
74	};
75
76	/* supported VAUX1 voltages in milivolts */
77	static const u16 VAUX1_VSEL_table[] = {
78	1800, 2500, 2800, 2850,
79	};
80
81	/* supported VAUX2 voltages in milivolts */
82	static const u16 VAUX2_VSEL_table[] = {
83	1800, 2800, 2900, 3300,
84	};
85
86	/* supported VAUX33 voltages in milivolts */
87	static const u16 VAUX33_VSEL_table[] = {
88	1800, 2000, 2800, 3300,
89	};
90
91	/* supported VMMC voltages in milivolts */
92	static const u16 VMMC_VSEL_table[] = {
93	1800, 2800, 3000, 3300,
94	};
95
96	struct tps_info {
97	const char *name;
98	unsigned min_uV;
99	unsigned max_uV;
100	u8 table_len;
101	const u16 *table;
102	};
103
104	static struct tps_info tps65910_regs[] = {
105	{
106	.name = "VRTC",
107	},
108	{
109	.name = "VIO",
110	.min_uV = 1500000,
111	.max_uV = 3300000,
112	.table_len = ARRAY_SIZE(VIO_VSEL_table),
113	.table = VIO_VSEL_table,
114	},
115	{
116	.name = "VDD1",
117	.min_uV = 600000,
118	.max_uV = 4500000,
119	},
120	{
121	.name = "VDD2",
122	.min_uV = 600000,
123	.max_uV = 4500000,
124	},
125	{
126	.name = "VDD3",
127	.min_uV = 5000000,
128	.max_uV = 5000000,
129	.table_len = ARRAY_SIZE(VDD3_VSEL_table),
130	.table = VDD3_VSEL_table,
131	},
132	{
133	.name = "VDIG1",
134	.min_uV = 1200000,
135	.max_uV = 2700000,
136	.table_len = ARRAY_SIZE(VDIG1_VSEL_table),
137	.table = VDIG1_VSEL_table,
138	},
139	{
140	.name = "VDIG2",
141	.min_uV = 1000000,
142	.max_uV = 1800000,
143	.table_len = ARRAY_SIZE(VDIG2_VSEL_table),
144	.table = VDIG2_VSEL_table,
145	},
146	{
147	.name = "VPLL",
148	.min_uV = 1000000,
149	.max_uV = 2500000,
150	.table_len = ARRAY_SIZE(VPLL_VSEL_table),
151	.table = VPLL_VSEL_table,
152	},
153	{
154	.name = "VDAC",
155	.min_uV = 1800000,
156	.max_uV = 2850000,
157	.table_len = ARRAY_SIZE(VDAC_VSEL_table),
158	.table = VDAC_VSEL_table,
159	},
160	{
161	.name = "VAUX1",
162	.min_uV = 1800000,
163	.max_uV = 2850000,
164	.table_len = ARRAY_SIZE(VAUX1_VSEL_table),
165	.table = VAUX1_VSEL_table,
166	},
167	{
168	.name = "VAUX2",
169	.min_uV = 1800000,
170	.max_uV = 3300000,
171	.table_len = ARRAY_SIZE(VAUX2_VSEL_table),
172	.table = VAUX2_VSEL_table,
173	},
174	{
175	.name = "VAUX33",
176	.min_uV = 1800000,
177	.max_uV = 3300000,
178	.table_len = ARRAY_SIZE(VAUX33_VSEL_table),
179	.table = VAUX33_VSEL_table,
180	},
181	{
182	.name = "VMMC",
183	.min_uV = 1800000,
184	.max_uV = 3300000,
185	.table_len = ARRAY_SIZE(VMMC_VSEL_table),
186	.table = VMMC_VSEL_table,
187	},
188	};
189
190	struct tps65910_reg {
191	struct regulator_desc desc[TPS65910_NUM_REGULATOR];
192	struct tps65910 *mfd;
193	struct regulator_dev *rdev[TPS65910_NUM_REGULATOR];
194	struct tps_info *info[TPS65910_NUM_REGULATOR];
195	struct mutex mutex;
196	int mode;
197	};
198
199	static inline int tps65910_read(struct tps65910_reg *pmic, u8 reg)
200	{
201	u8 val;
202	int err;
203
204	err = pmic->mfd->read(pmic->mfd, reg, 1, &val);
205	if (err)
206	return err;
207
208	return val;
209	}
210
211	static inline int tps65910_write(struct tps65910_reg *pmic, u8 reg, u8 val)
212	{
213	return pmic->mfd->write(pmic->mfd, reg, 1, &val);
214	}
215
216	static int tps65910_modify_bits(struct tps65910_reg *pmic, u8 reg,
217	u8 set_mask, u8 clear_mask)
218	{
219	int err, data;
220
221	mutex_lock(&pmic->mutex);
222
223	data = tps65910_read(pmic, reg);
224	if (data < 0) {
225	dev_err(pmic->mfd->dev, "Read from reg 0x%x failed\n", reg);
226	err = data;
227	goto out;
228	}
229
230	data &= ~clear_mask;
231	data \|= set_mask;
232	err = tps65910_write(pmic, reg, data);
233	if (err)
234	dev_err(pmic->mfd->dev, "Write for reg 0x%x failed\n", reg);
235
236	out:
237	mutex_unlock(&pmic->mutex);
238	return err;
239	}
240
241	static int tps65910_reg_read(struct tps65910_reg *pmic, u8 reg)
242	{
243	int data;
244
245	mutex_lock(&pmic->mutex);
246
247	data = tps65910_read(pmic, reg);
248	if (data < 0)
249	dev_err(pmic->mfd->dev, "Read from reg 0x%x failed\n", reg);
250
251	mutex_unlock(&pmic->mutex);
252	return data;
253	}
254
255	static int tps65910_reg_write(struct tps65910_reg *pmic, u8 reg, u8 val)
256	{
257	int err;
258
259	mutex_lock(&pmic->mutex);
260
261	err = tps65910_write(pmic, reg, val);
262	if (err < 0)
263	dev_err(pmic->mfd->dev, "Write for reg 0x%x failed\n", reg);
264
265	mutex_unlock(&pmic->mutex);
266	return err;
267	}
268
269	static int tps65910_get_ctrl_register(int id)
270	{
271	switch (id) {
272	case TPS65910_REG_VRTC:
273	return TPS65910_VRTC;
274	case TPS65910_REG_VIO:
275	return TPS65910_VIO;
276	case TPS65910_REG_VDD1:
277	return TPS65910_VDD1;
278	case TPS65910_REG_VDD2:
279	return TPS65910_VDD2;
280	case TPS65910_REG_VDD3:
281	return TPS65910_VDD3;
282	case TPS65910_REG_VDIG1:
283	return TPS65910_VDIG1;
284	case TPS65910_REG_VDIG2:
285	return TPS65910_VDIG2;
286	case TPS65910_REG_VPLL:
287	return TPS65910_VPLL;
288	case TPS65910_REG_VDAC:
289	return TPS65910_VDAC;
290	case TPS65910_REG_VAUX1:
291	return TPS65910_VAUX1;
292	case TPS65910_REG_VAUX2:
293	return TPS65910_VAUX2;
294	case TPS65910_REG_VAUX33:
295	return TPS65910_VAUX33;
296	case TPS65910_REG_VMMC:
297	return TPS65910_VMMC;
298	default:
299	return -EINVAL;
300	}
301	}
302
303	static int tps65910_is_enabled(struct regulator_dev *dev)
304	{
305	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
306	int reg, value, id = rdev_get_id(dev);
307
308	reg = tps65910_get_ctrl_register(id);
309	if (reg < 0)
310	return reg;
311
312	value = tps65910_reg_read(pmic, reg);
313	if (value < 0)
314	return value;
315
316	return value & TPS65910_SUPPLY_STATE_ENABLED;
317	}
318
319	static int tps65910_enable(struct regulator_dev *dev)
320	{
321	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
322	struct tps65910 *mfd = pmic->mfd;
323	int reg, id = rdev_get_id(dev);
324
325	reg = tps65910_get_ctrl_register(id);
326	if (reg < 0)
327	return reg;
328
329	return tps65910_set_bits(mfd, reg, TPS65910_SUPPLY_STATE_ENABLED);
330	}
331
332	static int tps65910_disable(struct regulator_dev *dev)
333	{
334	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
335	struct tps65910 *mfd = pmic->mfd;
336	int reg, id = rdev_get_id(dev);
337
338	reg = tps65910_get_ctrl_register(id);
339	if (reg < 0)
340	return reg;
341
342	return tps65910_clear_bits(mfd, reg, TPS65910_SUPPLY_STATE_ENABLED);
343	}
344
345
346	static int tps65910_set_mode(struct regulator_dev *dev, unsigned int mode)
347	{
348	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
349	struct tps65910 *mfd = pmic->mfd;
350	int reg, value, id = rdev_get_id(dev);
351	reg = tps65910_get_ctrl_register(id);
352	if (reg < 0)
353	return reg;
354
355	switch (mode) {
356	case REGULATOR_MODE_NORMAL:
357	return tps65910_modify_bits(pmic, reg, LDO_ST_ON_BIT,
358	LDO_ST_MODE_BIT);
359	case REGULATOR_MODE_IDLE:
360	value = LDO_ST_ON_BIT \| LDO_ST_MODE_BIT;
361	return tps65910_set_bits(mfd, reg, value);
362	case REGULATOR_MODE_STANDBY:
363	return tps65910_clear_bits(mfd, reg, LDO_ST_ON_BIT);
364	}
365
366	return -EINVAL;
367	}
368
369	static unsigned int tps65910_get_mode(struct regulator_dev *dev)
370	{
371	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
372	int reg, value, id = rdev_get_id(dev);
373
374	reg = tps65910_get_ctrl_register(id);
375	if (reg < 0)
376	return reg;
377
378	value = tps65910_reg_read(pmic, reg);
379	if (value < 0)
380	return value;
381
382	if (value & LDO_ST_ON_BIT)
383	return REGULATOR_MODE_STANDBY;
384	else if (value & LDO_ST_MODE_BIT)
385	return REGULATOR_MODE_IDLE;
386	else
387	return REGULATOR_MODE_NORMAL;
388	}
389
390	static int tps65910_get_voltage_dcdc(struct regulator_dev *dev)
391	{
392	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
393	int id = rdev_get_id(dev), voltage = 0;
394	int opvsel = 0, srvsel = 0, mult = 0, sr = 0;
395
396	switch (id) {
397	case TPS65910_REG_VDD1:
398	opvsel = tps65910_reg_read(pmic, TPS65910_VDD1_OP);
399	mult = tps65910_reg_read(pmic, TPS65910_VDD1);
400	mult = (mult & VDD1_VGAIN_SEL_MASK) >> VDD1_VGAIN_SEL_SHIFT;
401	srvsel = tps65910_reg_read(pmic, TPS65910_VDD1_SR);
402	sr = opvsel & VDD1_OP_CMD_MASK;
403	opvsel &= VDD1_OP_SEL_MASK;
404	srvsel &= VDD1_SR_SEL_MASK;
405	break;
406	case TPS65910_REG_VDD2:
407	opvsel = tps65910_reg_read(pmic, TPS65910_VDD2_OP);
408	mult = tps65910_reg_read(pmic, TPS65910_VDD2);
409	mult = (mult & VDD2_VGAIN_SEL_MASK) >> VDD2_VGAIN_SEL_SHIFT;
410	srvsel = tps65910_reg_read(pmic, TPS65910_VDD2_SR);
411	sr = opvsel & VDD2_OP_CMD_MASK;
412	opvsel &= VDD2_OP_SEL_MASK;
413	srvsel &= VDD2_SR_SEL_MASK;
414	break;
415	}
416
417	/* multiplier 0 == 1 but 2,3 normal */
418	if (!mult)
419	mult=1;
420
421	if (sr) {
422	/* Valid range is 3-75 so normalise */
423	if (srvsel < 3) srvsel = 3;
424	if (srvsel > 75) srvsel = 75;
425	srvsel -= 3;
426
427	voltage = (srvsel * VDD1_2_OFFSET + VDD1_2_MIN_VOLT) * 100;
428	} else {
429
430	/* Valid range is 3-75 so normalise */
431	if (opvsel < 3) opvsel = 3;
432	if (opvsel > 75) opvsel = 75;
433	opvsel -= 3;
434
435	voltage = (opvsel * VDD1_2_OFFSET + VDD1_2_MIN_VOLT) * 100;
436	}
437
438	voltage *= mult;
439
440	return voltage;
441	}
442
443	static int tps65910_get_voltage(struct regulator_dev *dev)
444	{
445	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
446	int reg, value, id = rdev_get_id(dev), voltage = 0;
447
448	reg = tps65910_get_ctrl_register(id);
449	if (reg < 0)
450	return reg;
451
452	value = tps65910_reg_read(pmic, reg);
453	if (value < 0)
454	return value;
455
456	switch (id) {
457	case TPS65910_REG_VIO:
458	case TPS65910_REG_VDIG1:
459	case TPS65910_REG_VDIG2:
460	case TPS65910_REG_VPLL:
461	case TPS65910_REG_VDAC:
462	case TPS65910_REG_VAUX1:
463	case TPS65910_REG_VAUX2:
464	case TPS65910_REG_VAUX33:
465	case TPS65910_REG_VMMC:
466	value &= LDO_SEL_MASK;
467	value >>= LDO_SEL_SHIFT;
468	break;
469	default:
470	return -EINVAL;
471	}
472
473	voltage = pmic->info[id]->table[value] * 1000;
474
475	return voltage;
476	}
477
478	static int tps65910_get_voltage_vdd3(struct regulator_dev *dev)
479	{
480	return 5 * 1000 * 1000;
481	}
482
483	static int tps65910_set_voltage_dcdc(struct regulator_dev *dev,
484	unsigned selector)
485	{
486	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
487	int id = rdev_get_id(dev), vsel;
488	int dcdc_mult;
489
490	/* Split vsel into appropriate registers */
491	dcdc_mult = (selector / VDD1_2_NUM_VOLTS) + 1;
492	if (dcdc_mult == 1) dcdc_mult--;
493
494	vsel = (selector % VDD1_2_NUM_VOLTS) + 3;
495
496	if (id == TPS65910_REG_VDD1) {
497	tps65910_modify_bits(pmic, TPS65910_VDD1,
498	(dcdc_mult << VDD1_VGAIN_SEL_SHIFT),
499	VDD1_VGAIN_SEL_MASK);
500	tps65910_reg_write(pmic, TPS65910_VDD1_OP, vsel);
501	} else {
502	tps65910_modify_bits(pmic, TPS65910_VDD2,
503	(dcdc_mult << VDD2_VGAIN_SEL_SHIFT),
504	VDD1_VGAIN_SEL_MASK);
505	tps65910_reg_write(pmic, TPS65910_VDD2_OP, vsel);
506	}
507
508	return 0;
509	}
510
511	static int tps65910_set_voltage(struct regulator_dev *dev, unsigned selector)
512	{
513	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
514	int reg, id = rdev_get_id(dev);
515
516	reg = tps65910_get_ctrl_register(id);
517	if (reg < 0)
518	return reg;
519
520	switch (id) {
521	case TPS65910_REG_VIO:
522	case TPS65910_REG_VDIG1:
523	case TPS65910_REG_VDIG2:
524	case TPS65910_REG_VPLL:
525	case TPS65910_REG_VDAC:
526	case TPS65910_REG_VAUX1:
527	case TPS65910_REG_VAUX2:
528	case TPS65910_REG_VAUX33:
529	case TPS65910_REG_VMMC:
530	return tps65910_modify_bits(pmic, reg,
531	(selector << LDO_SEL_SHIFT), LDO_SEL_MASK);
532	}
533
534	return -EINVAL;
535	}
536
537	static int tps65910_list_voltage_dcdc(struct regulator_dev *dev,
538	unsigned selector)
539	{
540	int mult, volt;
541
542	mult = (selector / VDD1_2_NUM_VOLTS) + 1;
543
544	volt = VDD1_2_MIN_VOLT + (selector % VDD1_2_NUM_VOLTS) * VDD1_2_OFFSET;
545
546	return volt * 100 * mult;
547	}
548
549	static int tps65910_list_voltage(struct regulator_dev *dev,
550	unsigned selector)
551	{
552	struct tps65910_reg *pmic = rdev_get_drvdata(dev);
553	int id = rdev_get_id(dev), voltage;
554
555	if (id < TPS65910_REG_VIO \|\| id > TPS65910_REG_VMMC)
556	return -EINVAL;
557
558	if (selector >= pmic->info[id]->table_len)
559	return -EINVAL;
560	else
561	voltage = pmic->info[id]->table[selector] * 1000;
562
563	return voltage;
564	}
565
566	/* Regulator ops (except VRTC) */
567	static struct regulator_ops tps65910_ops_dcdc = {
568	.is_enabled = tps65910_is_enabled,
569	.enable = tps65910_enable,
570	.disable = tps65910_disable,
571	.set_mode = tps65910_set_mode,
572	.get_mode = tps65910_get_mode,
573	.get_voltage = tps65910_get_voltage_dcdc,
574	.set_voltage_sel = tps65910_set_voltage_dcdc,
575	.list_voltage = tps65910_list_voltage_dcdc,
576	};
577
578	static struct regulator_ops tps65910_ops_vdd3 = {
579	.is_enabled = tps65910_is_enabled,
580	.enable = tps65910_enable,
581	.disable = tps65910_disable,
582	.set_mode = tps65910_set_mode,
583	.get_mode = tps65910_get_mode,
584	.get_voltage = tps65910_get_voltage_vdd3,
585	.list_voltage = tps65910_list_voltage,
586	};
587
588	static struct regulator_ops tps65910_ops = {
589	.is_enabled = tps65910_is_enabled,
590	.enable = tps65910_enable,
591	.disable = tps65910_disable,
592	.set_mode = tps65910_set_mode,
593	.get_mode = tps65910_get_mode,
594	.get_voltage = tps65910_get_voltage,
595	.set_voltage_sel = tps65910_set_voltage,
596	.list_voltage = tps65910_list_voltage,
597	};
598
599	static __devinit int tps65910_probe(struct platform_device *pdev)
600	{
601	struct tps65910 *tps65910 = dev_get_drvdata(pdev->dev.parent);
602	struct tps_info *info = tps65910_regs;
603	struct regulator_init_data *reg_data;
604	struct regulator_dev *rdev;
605	struct tps65910_reg *pmic;
606	struct tps65910_board *pmic_plat_data;
518fb721 GG	607	int i, err;
	608
	609	pmic_plat_data = dev_get_platdata(tps65910->dev);
	610	if (!pmic_plat_data)
	611	return -EINVAL;
	612
	613	reg_data = pmic_plat_data->tps65910_pmic_init_data;
	614
	615	pmic = kzalloc(sizeof(*pmic), GFP_KERNEL);
	616	if (!pmic)
	617	return -ENOMEM;
	618
	619	mutex_init(&pmic->mutex);
	620	pmic->mfd = tps65910;
	621	platform_set_drvdata(pdev, pmic);
	622
	623	/* Give control of all register to control port */
	624	tps65910_set_bits(pmic->mfd, TPS65910_DEVCTRL,
	625	DEVCTRL_SR_CTL_I2C_SEL_MASK);
	626
	627	for (i = 0; i < TPS65910_NUM_REGULATOR; i++, info++, reg_data++) {
	628	/* Register the regulators */
	629	pmic->info[i] = info;
	630
	631	pmic->desc[i].name = info->name;
77fa44d0	632	pmic->desc[i].id = i;
518fb721 GG	633	pmic->desc[i].n_voltages = info->table_len;
	634
	635	if ((i == TPS65910_REG_VDD1) \|\| (i == TPS65910_REG_VDD2))
	636	pmic->desc[i].ops = &tps65910_ops_dcdc;
	637	else if (i == TPS65910_REG_VDD3)
	638	pmic->desc[i].ops = &tps65910_ops_vdd3;
	639	else
	640	pmic->desc[i].ops = &tps65910_ops;
	641
	642	pmic->desc[i].type = REGULATOR_VOLTAGE;
	643	pmic->desc[i].owner = THIS_MODULE;
	644
	645	rdev = regulator_register(&pmic->desc[i],
	646	tps65910->dev, reg_data, pmic);
	647	if (IS_ERR(rdev)) {
	648	dev_err(tps65910->dev,
	649	"failed to register %s regulator\n",
	650	pdev->name);
	651	err = PTR_ERR(rdev);
	652	goto err;
	653	}
	654
	655	/* Save regulator for cleanup */
	656	pmic->rdev[i] = rdev;
	657	}
	658	return 0;
	659
	660	err:
	661	while (--i >= 0)
	662	regulator_unregister(pmic->rdev[i]);
	663
	664	kfree(pmic);
	665	return err;
	666	}
	667
	668	static int __devexit tps65910_remove(struct platform_device *pdev)
	669	{
	670	struct tps65910_reg *tps65910_reg = platform_get_drvdata(pdev);
	671	int i;
	672
	673	for (i = 0; i < TPS65910_NUM_REGULATOR; i++)
	674	regulator_unregister(tps65910_reg->rdev[i]);
	675
	676	kfree(tps65910_reg);
	677	return 0;
	678	}
	679
	680	static struct platform_driver tps65910_driver = {
	681	.driver = {
	682	.name = "tps65910-pmic",
	683	.owner = THIS_MODULE,
	684	},
	685	.probe = tps65910_probe,
	686	.remove = __devexit_p(tps65910_remove),
	687	};
	688
	689	static int __init tps65910_init(void)
	690	{
	691	return platform_driver_register(&tps65910_driver);
	692	}
	693	subsys_initcall(tps65910_init);
	694
	695	static void __exit tps65910_cleanup(void)
	696	{
697	platform_driver_unregister(&tps65910_driver);
698	}
699	module_exit(tps65910_cleanup);
700
701	MODULE_AUTHOR("Graeme Gregory <gg@slimlogic.co.uk>");
702	MODULE_DESCRIPTION("TPS6507x voltage regulator driver");
703	MODULE_LICENSE("GPL v2");
704	MODULE_ALIAS("platform:tps65910-pmic");