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Commit a493077f authored by AnilKumar Ch's avatar AnilKumar Ch Committed by Mark Brown
Browse files

regulator: tps65217: Add tps65217 regulator driver 



This patch adds tps65217 PMIC as a regulator

The regulator module consists of 3 DCDCs and 4 LDOs. The output
voltages are configurable and are meant to supply power to the
main processor and other components

Signed-off-by: default avatarAnilKumar Ch <anilkumar@ti.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 62aa4925

drivers/regulator/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -275,6 +275,15 @@ config REGULATOR_TPS6507X 
	  three step-down converters and two general-purpose LDO voltage regulators.

	  It supports TI's software based Class-2 SmartReflex implementation.



config REGULATOR_TPS65217

	tristate "TI TPS65217 Power regulators"

	depends on MFD_TPS65217

	help

	  This driver supports TPS65217 voltage regulator chips. TPS65217

	  provides three step-down converters and four general-purpose LDO

	  voltage regulators. It supports software based voltage control

	  for different voltage domains



config REGULATOR_TPS65912

	tristate "TI TPS65912 Power regulator"

	depends on (MFD_TPS65912_I2C || MFD_TPS65912_SPI)

drivers/regulator/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -40,6 +40,7 @@ obj-$(CONFIG_REGULATOR_AB3100) += ab3100.o 
obj-$(CONFIG_REGULATOR_TPS6105X) += tps6105x-regulator.o

obj-$(CONFIG_REGULATOR_TPS65023) += tps65023-regulator.o

obj-$(CONFIG_REGULATOR_TPS6507X) += tps6507x-regulator.o

obj-$(CONFIG_REGULATOR_TPS65217) += tps65217-regulator.o

obj-$(CONFIG_REGULATOR_TPS6524X) += tps6524x-regulator.o

obj-$(CONFIG_REGULATOR_TPS65912) += tps65912-regulator.o

obj-$(CONFIG_REGULATOR_88PM8607) += 88pm8607.o

drivers/regulator/tps65217-regulator.c

0 → 100644
+493 −0
Original line number Diff line number Diff line 
/*

 * tps65217-regulator.c

 *

 * Regulator driver for TPS65217 PMIC

 *

 * Copyright (C) 2011 Texas Instruments 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/device.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/mfd/tps65217.h>



#define TPS65217_REGULATOR(_name, _id, _ops, _n)	\

	{						\

		.name		= _name,		\

		.id		= _id,			\

		.ops		= &_ops,		\

		.n_voltages	= _n,			\

		.type		= REGULATOR_VOLTAGE,	\

		.owner		= THIS_MODULE,		\

	}						\



#define TPS65217_INFO(_nm, _min, _max, _f1, _f2, _t, _n, _em, _vr, _vm)	\

	{						\

		.name		= _nm,			\

		.min_uV		= _min,			\

		.max_uV		= _max,			\

		.vsel_to_uv	= _f1,			\

		.uv_to_vsel	= _f2,			\

		.table		= _t,			\

		.table_len	= _n,			\

		.enable_mask	= _em,			\

		.set_vout_reg	= _vr,			\

		.set_vout_mask	= _vm,			\

	}



static const int LDO1_VSEL_table[] = {

	1000000, 1100000, 1200000, 1250000,

	1300000, 1350000, 1400000, 1500000,

	1600000, 1800000, 2500000, 2750000,

	2800000, 3000000, 3100000, 3300000,

};



static int tps65217_vsel_to_uv1(unsigned int vsel)

{

	int uV = 0;



	if (vsel > 63)

		return -EINVAL;



	if (vsel <= 24)

		uV = vsel * 25000 + 900000;

	else if (vsel <= 52)

		uV = (vsel - 24) * 50000 + 1500000;

	else if (vsel < 56)

		uV = (vsel - 52) * 100000 + 2900000;

	else

		uV = 3300000;



	return uV;

}



static int tps65217_uv_to_vsel1(int uV, unsigned int *vsel)

{

	if ((uV < 0) && (uV > 3300000))

		return -EINVAL;



	if (uV <= 1500000)

		*vsel = (uV - 875001) / 25000;

	else if (uV <= 2900000)

		*vsel = 24 + (uV - 1450001) / 50000;

	else if (uV < 3300000)

		*vsel = 52 + (uV - 2800001) / 100000;

	else

		*vsel = 56;



	return 0;

}



static int tps65217_vsel_to_uv2(unsigned int vsel)

{

	int uV = 0;



	if (vsel > 31)

		return -EINVAL;



	if (vsel <= 8)

		uV = vsel * 50000 + 1500000;

	else if (vsel <= 13)

		uV = (vsel - 8) * 100000 + 1900000;

	else

		uV = (vsel - 13) * 50000 + 2400000;



	return uV;

}



static int tps65217_uv_to_vsel2(int uV, unsigned int *vsel)

{

	if ((uV < 0) && (uV > 3300000))

		return -EINVAL;



	if (uV <= 1900000)

		*vsel = (uV - 1450001) / 50000;

	else if (uV <= 2400000)

		*vsel = 8 + (uV - 1800001) / 100000;

	else

		*vsel = 13 + (uV - 2350001) / 50000;



	return 0;

}



static struct tps_info tps65217_pmic_regs[] = {

	TPS65217_INFO("DCDC1", 900000, 1800000, tps65217_vsel_to_uv1,

			tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_DC1_EN,

			TPS65217_REG_DEFDCDC1, TPS65217_DEFDCDCX_DCDC_MASK),

	TPS65217_INFO("DCDC2", 900000, 3300000, tps65217_vsel_to_uv1,

			tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_DC2_EN,

			TPS65217_REG_DEFDCDC2, TPS65217_DEFDCDCX_DCDC_MASK),

	TPS65217_INFO("DCDC3", 900000, 1500000, tps65217_vsel_to_uv1,

			tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_DC3_EN,

			TPS65217_REG_DEFDCDC3, TPS65217_DEFDCDCX_DCDC_MASK),

	TPS65217_INFO("LDO1", 1000000, 3300000, NULL, NULL, LDO1_VSEL_table,

			16, TPS65217_ENABLE_LDO1_EN, TPS65217_REG_DEFLDO1,

			TPS65217_DEFLDO1_LDO1_MASK),

	TPS65217_INFO("LDO2", 900000, 3300000, tps65217_vsel_to_uv1,

			tps65217_uv_to_vsel1, NULL, 64, TPS65217_ENABLE_LDO2_EN,

			TPS65217_REG_DEFLDO2, TPS65217_DEFLDO2_LDO2_MASK),

	TPS65217_INFO("LDO3", 1800000, 3300000, tps65217_vsel_to_uv2,

			tps65217_uv_to_vsel2, NULL, 32,

			TPS65217_ENABLE_LS1_EN | TPS65217_DEFLDO3_LDO3_EN,

			TPS65217_REG_DEFLS1, TPS65217_DEFLDO3_LDO3_MASK),

	TPS65217_INFO("LDO4", 1800000, 3300000, tps65217_vsel_to_uv2,

			tps65217_uv_to_vsel2, NULL, 32,

			TPS65217_ENABLE_LS2_EN | TPS65217_DEFLDO4_LDO4_EN,

			TPS65217_REG_DEFLS2, TPS65217_DEFLDO4_LDO4_MASK),

};



static int tps65217_pmic_dcdc_is_enabled(struct regulator_dev *dev)

{

	int ret;

	struct tps65217 *tps = rdev_get_drvdata(dev);

	unsigned int data, dcdc = rdev_get_id(dev);



	if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)

		return -EINVAL;



	ret = tps65217_reg_read(tps, TPS65217_REG_ENABLE, &data);

	if (ret)

		return ret;



	return (data & tps->info[dcdc]->enable_mask) ? 1 : 0;

}



static int tps65217_pmic_ldo_is_enabled(struct regulator_dev *dev)

{

	int ret;

	struct tps65217 *tps = rdev_get_drvdata(dev);

	unsigned int data, ldo = rdev_get_id(dev);



	if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4)

		return -EINVAL;



	ret = tps65217_reg_read(tps, TPS65217_REG_ENABLE, &data);

	if (ret)

		return ret;



	return (data & tps->info[ldo]->enable_mask) ? 1 : 0;

}



static int tps65217_pmic_dcdc_enable(struct regulator_dev *dev)

{

	struct tps65217 *tps = rdev_get_drvdata(dev);

	unsigned int dcdc = rdev_get_id(dev);



	if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)

		return -EINVAL;



	/* Enable the regulator and password protection is level 1 */

	return tps65217_set_bits(tps, TPS65217_REG_ENABLE,

				tps->info[dcdc]->enable_mask,

				tps->info[dcdc]->enable_mask,

				TPS65217_PROTECT_L1);

}



static int tps65217_pmic_dcdc_disable(struct regulator_dev *dev)

{

	struct tps65217 *tps = rdev_get_drvdata(dev);

	unsigned int dcdc = rdev_get_id(dev);



	if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)

		return -EINVAL;



	/* Disable the regulator and password protection is level 1 */

	return tps65217_clear_bits(tps, TPS65217_REG_ENABLE,

			tps->info[dcdc]->enable_mask, TPS65217_PROTECT_L1);

}



static int tps65217_pmic_ldo_enable(struct regulator_dev *dev)

{

	struct tps65217 *tps = rdev_get_drvdata(dev);

	unsigned int ldo = rdev_get_id(dev);



	if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4)

		return -EINVAL;



	/* Enable the regulator and password protection is level 1 */

	return tps65217_set_bits(tps, TPS65217_REG_ENABLE,

				tps->info[ldo]->enable_mask,

				tps->info[ldo]->enable_mask,

				TPS65217_PROTECT_L1);

}



static int tps65217_pmic_ldo_disable(struct regulator_dev *dev)

{

	struct tps65217 *tps = rdev_get_drvdata(dev);

	unsigned int ldo = rdev_get_id(dev);



	if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4)

		return -EINVAL;



	/* Disable the regulator and password protection is level 1 */

	return tps65217_clear_bits(tps, TPS65217_REG_ENABLE,

			tps->info[ldo]->enable_mask, TPS65217_PROTECT_L1);

}



static int tps65217_pmic_dcdc_get_voltage_sel(struct regulator_dev *dev)

{

	int ret;

	struct tps65217 *tps = rdev_get_drvdata(dev);

	unsigned int selector, dcdc = rdev_get_id(dev);



	if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)

		return -EINVAL;



	ret = tps65217_reg_read(tps, tps->info[dcdc]->set_vout_reg, &selector);

	if (ret)

		return ret;



	selector &= tps->info[dcdc]->set_vout_mask;



	return selector;

}



static int tps65217_pmic_dcdc_set_voltage(struct regulator_dev *dev,

				  int min_uV, int max_uV, unsigned *selector)

{

	int ret;

	struct tps65217 *tps = rdev_get_drvdata(dev);

	unsigned int dcdc = rdev_get_id(dev);



	if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)

		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;



	ret = tps->info[dcdc]->uv_to_vsel(min_uV, selector);

	if (ret)

		return ret;



	/* Set the voltage based on vsel value and write protect level is 2 */

	ret = tps65217_set_bits(tps, tps->info[dcdc]->set_vout_reg,

					tps->info[dcdc]->set_vout_mask,

					*selector, TPS65217_PROTECT_L2);

	if (ret)

		return ret;



	/* Set GO bit to initiate voltage transistion */

	return tps65217_set_bits(tps, TPS65217_REG_DEFSLEW,

				TPS65217_DEFSLEW_GO, TPS65217_DEFSLEW_GO,

				TPS65217_PROTECT_L2);

}



static int tps65217_pmic_ldo_get_voltage_sel(struct regulator_dev *dev)

{

	int ret;

	struct tps65217 *tps = rdev_get_drvdata(dev);

	unsigned int selector, ldo = rdev_get_id(dev);



	if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4)

		return -EINVAL;



	ret = tps65217_reg_read(tps, tps->info[ldo]->set_vout_reg, &selector);

	if (ret)

		return ret;



	selector &= tps->info[ldo]->set_vout_mask;



	return selector;

}



static int tps65217_pmic_ldo_set_voltage_sel(struct regulator_dev *dev,

						unsigned selector)

{

	struct tps65217 *tps = rdev_get_drvdata(dev);

	int ldo = rdev_get_id(dev);



	if (ldo != TPS65217_LDO_1)

		return -EINVAL;



	if (selector >= tps->info[ldo]->table_len)

		return -EINVAL;



	/* Set the voltage based on vsel value and write protect level is 2 */

	return tps65217_set_bits(tps, tps->info[ldo]->set_vout_reg,

					tps->info[ldo]->set_vout_mask,

					selector, TPS65217_PROTECT_L2);

}



static int tps65217_pmic_ldo_set_voltage(struct regulator_dev *dev,

				  int min_uV, int max_uV, unsigned *selector)

{

	int ret;

	struct tps65217 *tps = rdev_get_drvdata(dev);

	unsigned int ldo = rdev_get_id(dev);



	if (ldo < TPS65217_LDO_2 || ldo > TPS65217_LDO_4)

		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;



	ret = tps->info[ldo]->uv_to_vsel(min_uV, selector);

	if (ret)

		return ret;



	/* Set the voltage based on vsel value and write protect level is 2 */

	return tps65217_set_bits(tps, tps->info[ldo]->set_vout_reg,

					tps->info[ldo]->set_vout_mask,

					*selector, TPS65217_PROTECT_L2);

}



static int tps65217_pmic_dcdc_list_voltage(struct regulator_dev *dev,

					unsigned selector)

{

	struct tps65217 *tps = rdev_get_drvdata(dev);

	unsigned int dcdc = rdev_get_id(dev);



	if (dcdc < TPS65217_DCDC_1 || dcdc > TPS65217_DCDC_3)

		return -EINVAL;



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

		return -EINVAL;



	return tps->info[dcdc]->vsel_to_uv(selector);

}



static int tps65217_pmic_ldo_list_voltage(struct regulator_dev *dev,

					unsigned selector)

{

	struct tps65217 *tps = rdev_get_drvdata(dev);

	unsigned int ldo = rdev_get_id(dev);



	if (ldo < TPS65217_LDO_1 || ldo > TPS65217_LDO_4)

		return -EINVAL;



	if (selector >= tps->info[ldo]->table_len)

		return -EINVAL;



	if (tps->info[ldo]->table)

		return tps->info[ldo]->table[selector];



	return tps->info[ldo]->vsel_to_uv(selector);

}



/* Operations permitted on DCDCx */

static struct regulator_ops tps65217_pmic_dcdc_ops = {

	.is_enabled		= tps65217_pmic_dcdc_is_enabled,

	.enable			= tps65217_pmic_dcdc_enable,

	.disable		= tps65217_pmic_dcdc_disable,

	.get_voltage_sel	= tps65217_pmic_dcdc_get_voltage_sel,

	.set_voltage		= tps65217_pmic_dcdc_set_voltage,

	.list_voltage		= tps65217_pmic_dcdc_list_voltage,

};



/* Operations permitted on LDO1 */

static struct regulator_ops tps65217_pmic_ldo1_ops = {

	.is_enabled		= tps65217_pmic_ldo_is_enabled,

	.enable			= tps65217_pmic_ldo_enable,

	.disable		= tps65217_pmic_ldo_disable,

	.get_voltage_sel	= tps65217_pmic_ldo_get_voltage_sel,

	.set_voltage_sel	= tps65217_pmic_ldo_set_voltage_sel,

	.list_voltage		= tps65217_pmic_ldo_list_voltage,

};



/* Operations permitted on LDO2, LDO3 and LDO4 */

static struct regulator_ops tps65217_pmic_ldo234_ops = {

	.is_enabled		= tps65217_pmic_ldo_is_enabled,

	.enable			= tps65217_pmic_ldo_enable,

	.disable		= tps65217_pmic_ldo_disable,

	.get_voltage_sel	= tps65217_pmic_ldo_get_voltage_sel,

	.set_voltage		= tps65217_pmic_ldo_set_voltage,

	.list_voltage		= tps65217_pmic_ldo_list_voltage,

};



static struct regulator_desc regulators[] = {

	TPS65217_REGULATOR("DCDC1", TPS65217_DCDC_1,

				tps65217_pmic_dcdc_ops, 64),

	TPS65217_REGULATOR("DCDC2",TPS65217_DCDC_2,

				tps65217_pmic_dcdc_ops, 64),

	TPS65217_REGULATOR("DCDC3", TPS65217_DCDC_3,

				tps65217_pmic_dcdc_ops, 64),

	TPS65217_REGULATOR("LDO1", TPS65217_LDO_1,

				tps65217_pmic_ldo1_ops, 16),

	TPS65217_REGULATOR("LDO2", TPS65217_LDO_2,

				tps65217_pmic_ldo234_ops, 64),

	TPS65217_REGULATOR("LDO3", TPS65217_LDO_3,

				tps65217_pmic_ldo234_ops, 32),

	TPS65217_REGULATOR("LDO4", TPS65217_LDO_4,

				tps65217_pmic_ldo234_ops, 32),

};



static int __devinit tps65217_regulator_probe(struct platform_device *pdev)

{

	struct regulator_dev *rdev;

	struct tps65217 *tps;

	struct tps_info *info = &tps65217_pmic_regs[pdev->id];



	/* Already set by core driver */

	tps = dev_to_tps65217(pdev->dev.parent);

	tps->info[pdev->id] = info;



	rdev = regulator_register(&regulators[pdev->id], &pdev->dev,

				  pdev->dev.platform_data, tps);

	if (IS_ERR(rdev))

		return PTR_ERR(rdev);



	platform_set_drvdata(pdev, rdev);



	return 0;

}



static int __devexit tps65217_regulator_remove(struct platform_device *pdev)

{

	struct regulator_dev *rdev = platform_get_drvdata(pdev);



	platform_set_drvdata(pdev, NULL);

	regulator_unregister(rdev);



	return 0;

}



static struct platform_driver tps65217_regulator_driver = {

	.driver = {

		.name = "tps65217-pmic",

	},

	.probe = tps65217_regulator_probe,

	.remove = __devexit_p(tps65217_regulator_remove),

};



static int __init tps65217_regulator_init(void)

{

	return platform_driver_register(&tps65217_regulator_driver);

}

subsys_initcall(tps65217_regulator_init);



static void __exit tps65217_regulator_exit(void)

{

	platform_driver_unregister(&tps65217_regulator_driver);

}

module_exit(tps65217_regulator_exit);





MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>");

MODULE_DESCRIPTION("TPS65217 voltage regulator driver");

MODULE_ALIAS("platform:tps65217-pmic");

MODULE_LICENSE("GPL v2");