drivers/regulator/bcm590xx-regulator.c - kernel/msm-4.9 - Gitiles

 /*
  * Broadcom BCM590xx regulator driver
  *
  * Copyright 2014 Linaro Limited
  * Author: Matt Porter <mporter@linaro.org>
  *
  * 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/err.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/mfd/bcm590xx.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>
 #include <linux/regulator/machine.h>
 #include <linux/regulator/of_regulator.h>
 #include <linux/slab.h>

 /* I2C slave 0 registers */
 #define BCM590XX_RFLDOPMCTRL1	0x60
 #define BCM590XX_IOSR1PMCTRL1	0x7a
 #define BCM590XX_IOSR2PMCTRL1	0x7c
 #define BCM590XX_CSRPMCTRL1	0x7e
 #define BCM590XX_SDSR1PMCTRL1	0x82
 #define BCM590XX_SDSR2PMCTRL1	0x86
 #define BCM590XX_MSRPMCTRL1	0x8a
 #define BCM590XX_VSRPMCTRL1	0x8e
 #define BCM590XX_RFLDOCTRL	0x96
 #define BCM590XX_CSRVOUT1	0xc0

 /* I2C slave 1 registers */
 #define BCM590XX_GPLDO5PMCTRL1	0x16
 #define BCM590XX_GPLDO6PMCTRL1	0x18
 #define BCM590XX_GPLDO1CTRL	0x1a
 #define BCM590XX_GPLDO2CTRL	0x1b
 #define BCM590XX_GPLDO3CTRL	0x1c
 #define BCM590XX_GPLDO4CTRL	0x1d
 #define BCM590XX_GPLDO5CTRL	0x1e
 #define BCM590XX_GPLDO6CTRL	0x1f
 #define BCM590XX_OTG_CTRL	0x40
 #define BCM590XX_GPLDO1PMCTRL1	0x57
 #define BCM590XX_GPLDO2PMCTRL1	0x59
 #define BCM590XX_GPLDO3PMCTRL1	0x5b
 #define BCM590XX_GPLDO4PMCTRL1	0x5d

 #define BCM590XX_REG_ENABLE	BIT(7)
 #define BCM590XX_VBUS_ENABLE	BIT(2)
 #define BCM590XX_LDO_VSEL_MASK	GENMASK(5, 3)
 #define BCM590XX_SR_VSEL_MASK	GENMASK(5, 0)

 /*
  * RFLDO to VSR regulators are
  * accessed via I2C slave 0
  */

 /* LDO regulator IDs */
 #define BCM590XX_REG_RFLDO	0
 #define BCM590XX_REG_CAMLDO1	1
 #define BCM590XX_REG_CAMLDO2	2
 #define BCM590XX_REG_SIMLDO1	3
 #define BCM590XX_REG_SIMLDO2	4
 #define BCM590XX_REG_SDLDO	5
 #define BCM590XX_REG_SDXLDO	6
 #define BCM590XX_REG_MMCLDO1	7
 #define BCM590XX_REG_MMCLDO2	8
 #define BCM590XX_REG_AUDLDO	9
 #define BCM590XX_REG_MICLDO	10
 #define BCM590XX_REG_USBLDO	11
 #define BCM590XX_REG_VIBLDO	12

 /* DCDC regulator IDs */
 #define BCM590XX_REG_CSR	13
 #define BCM590XX_REG_IOSR1	14
 #define BCM590XX_REG_IOSR2	15
 #define BCM590XX_REG_MSR	16
 #define BCM590XX_REG_SDSR1	17
 #define BCM590XX_REG_SDSR2	18
 #define BCM590XX_REG_VSR	19

 /*
  * GPLDO1 to VBUS regulators are
  * accessed via I2C slave 1
  */

 #define BCM590XX_REG_GPLDO1	20
 #define BCM590XX_REG_GPLDO2	21
 #define BCM590XX_REG_GPLDO3	22
 #define BCM590XX_REG_GPLDO4	23
 #define BCM590XX_REG_GPLDO5	24
 #define BCM590XX_REG_GPLDO6	25
 #define BCM590XX_REG_VBUS	26

 #define BCM590XX_NUM_REGS	27

 #define BCM590XX_REG_IS_LDO(n)	(n < BCM590XX_REG_CSR)
 #define BCM590XX_REG_IS_GPLDO(n) \
 	((n > BCM590XX_REG_VSR) && (n < BCM590XX_REG_VBUS))
 #define BCM590XX_REG_IS_VBUS(n)	(n == BCM590XX_REG_VBUS)

 struct bcm590xx_board {
 	struct regulator_init_data *bcm590xx_pmu_init_data[BCM590XX_NUM_REGS];
 };

 /* LDO group A: supported voltages in microvolts */
 static const unsigned int ldo_a_table[] = {
 	1200000, 1800000, 2500000, 2700000, 2800000,
 	2900000, 3000000, 3300000,
 };

 /* LDO group C: supported voltages in microvolts */
 static const unsigned int ldo_c_table[] = {
 	3100000, 1800000, 2500000, 2700000, 2800000,
 	2900000, 3000000, 3300000,
 };

 static const unsigned int ldo_vbus[] = {
 	5000000,
 };

 /* DCDC group CSR: supported voltages in microvolts */
 static const struct regulator_linear_range dcdc_csr_ranges[] = {
 	REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000),
 	REGULATOR_LINEAR_RANGE(1360000, 51, 55, 20000),
 	REGULATOR_LINEAR_RANGE(900000, 56, 63, 0),
 };

 /* DCDC group IOSR1: supported voltages in microvolts */
 static const struct regulator_linear_range dcdc_iosr1_ranges[] = {
 	REGULATOR_LINEAR_RANGE(860000, 2, 51, 10000),
 	REGULATOR_LINEAR_RANGE(1500000, 52, 52, 0),
 	REGULATOR_LINEAR_RANGE(1800000, 53, 53, 0),
 	REGULATOR_LINEAR_RANGE(900000, 54, 63, 0),
 };

 /* DCDC group SDSR1: supported voltages in microvolts */
 static const struct regulator_linear_range dcdc_sdsr1_ranges[] = {
 	REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000),
 	REGULATOR_LINEAR_RANGE(1340000, 51, 51, 0),
 	REGULATOR_LINEAR_RANGE(900000, 52, 63, 0),
 };

 struct bcm590xx_info {
 	const char *name;
 	const char *vin_name;
 	u8 n_voltages;
 	const unsigned int *volt_table;
 	u8 n_linear_ranges;
 	const struct regulator_linear_range *linear_ranges;
 };

 #define BCM590XX_REG_TABLE(_name, _table) \
 	{ \
 		.name = #_name, \
 		.n_voltages = ARRAY_SIZE(_table), \
 		.volt_table = _table, \
 	}

 #define BCM590XX_REG_RANGES(_name, _ranges) \
 	{ \
 		.name = #_name, \
 		.n_voltages = 64, \
 		.n_linear_ranges = ARRAY_SIZE(_ranges), \
 		.linear_ranges = _ranges, \
 	}

 static struct bcm590xx_info bcm590xx_regs[] = {
 	BCM590XX_REG_TABLE(rfldo, ldo_a_table),
 	BCM590XX_REG_TABLE(camldo1, ldo_c_table),
 	BCM590XX_REG_TABLE(camldo2, ldo_c_table),
 	BCM590XX_REG_TABLE(simldo1, ldo_a_table),
 	BCM590XX_REG_TABLE(simldo2, ldo_a_table),
 	BCM590XX_REG_TABLE(sdldo, ldo_c_table),
 	BCM590XX_REG_TABLE(sdxldo, ldo_a_table),
 	BCM590XX_REG_TABLE(mmcldo1, ldo_a_table),
 	BCM590XX_REG_TABLE(mmcldo2, ldo_a_table),
 	BCM590XX_REG_TABLE(audldo, ldo_a_table),
 	BCM590XX_REG_TABLE(micldo, ldo_a_table),
 	BCM590XX_REG_TABLE(usbldo, ldo_a_table),
 	BCM590XX_REG_TABLE(vibldo, ldo_c_table),
 	BCM590XX_REG_RANGES(csr, dcdc_csr_ranges),
 	BCM590XX_REG_RANGES(iosr1, dcdc_iosr1_ranges),
 	BCM590XX_REG_RANGES(iosr2, dcdc_iosr1_ranges),
 	BCM590XX_REG_RANGES(msr, dcdc_iosr1_ranges),
 	BCM590XX_REG_RANGES(sdsr1, dcdc_sdsr1_ranges),
 	BCM590XX_REG_RANGES(sdsr2, dcdc_iosr1_ranges),
 	BCM590XX_REG_RANGES(vsr, dcdc_iosr1_ranges),
 	BCM590XX_REG_TABLE(gpldo1, ldo_a_table),
 	BCM590XX_REG_TABLE(gpldo2, ldo_a_table),
 	BCM590XX_REG_TABLE(gpldo3, ldo_a_table),
 	BCM590XX_REG_TABLE(gpldo4, ldo_a_table),
 	BCM590XX_REG_TABLE(gpldo5, ldo_a_table),
 	BCM590XX_REG_TABLE(gpldo6, ldo_a_table),
 	BCM590XX_REG_TABLE(vbus, ldo_vbus),
 };

 struct bcm590xx_reg {
 	struct regulator_desc *desc;
 	struct bcm590xx *mfd;
 };

 static int bcm590xx_get_vsel_register(int id)
 {
 	if (BCM590XX_REG_IS_LDO(id))
 		return BCM590XX_RFLDOCTRL + id;
 	else if (BCM590XX_REG_IS_GPLDO(id))
 		return BCM590XX_GPLDO1CTRL + id;
 	else
 		return BCM590XX_CSRVOUT1 + (id - BCM590XX_REG_CSR) * 3;
 }

 static int bcm590xx_get_enable_register(int id)
 {
 	int reg = 0;

 	if (BCM590XX_REG_IS_LDO(id))
 		reg = BCM590XX_RFLDOPMCTRL1 + id * 2;
 	else if (BCM590XX_REG_IS_GPLDO(id))
 		reg = BCM590XX_GPLDO1PMCTRL1 + id * 2;
 	else
 		switch (id) {
 		case BCM590XX_REG_CSR:
 			reg = BCM590XX_CSRPMCTRL1;
 			break;
 		case BCM590XX_REG_IOSR1:
 			reg = BCM590XX_IOSR1PMCTRL1;
 			break;
 		case BCM590XX_REG_IOSR2:
 			reg = BCM590XX_IOSR2PMCTRL1;
 			break;
 		case BCM590XX_REG_MSR:
 			reg = BCM590XX_MSRPMCTRL1;
 			break;
 		case BCM590XX_REG_SDSR1:
 			reg = BCM590XX_SDSR1PMCTRL1;
 			break;
 		case BCM590XX_REG_SDSR2:
 			reg = BCM590XX_SDSR2PMCTRL1;
 			break;
 		case BCM590XX_REG_VBUS:
 			reg = BCM590XX_OTG_CTRL;
 		};


 	return reg;
 }

 static struct regulator_ops bcm590xx_ops_ldo = {
 	.is_enabled		= regulator_is_enabled_regmap,
 	.enable			= regulator_enable_regmap,
 	.disable		= regulator_disable_regmap,
 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
 	.list_voltage		= regulator_list_voltage_table,
 	.map_voltage		= regulator_map_voltage_iterate,
 };

 static struct regulator_ops bcm590xx_ops_dcdc = {
 	.is_enabled		= regulator_is_enabled_regmap,
 	.enable			= regulator_enable_regmap,
 	.disable		= regulator_disable_regmap,
 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
 	.list_voltage		= regulator_list_voltage_linear_range,
 	.map_voltage		= regulator_map_voltage_linear_range,
 };

 static struct regulator_ops bcm590xx_ops_vbus = {
 	.is_enabled		= regulator_is_enabled_regmap,
 	.enable			= regulator_enable_regmap,
 	.disable		= regulator_disable_regmap,
 };

 #define BCM590XX_MATCH(_name, _id) \
 	{ \
 		.name = #_name, \
 		.driver_data = (void *)&bcm590xx_regs[BCM590XX_REG_##_id], \
 	}

 static struct of_regulator_match bcm590xx_matches[] = {
 	BCM590XX_MATCH(rfldo, RFLDO),
 	BCM590XX_MATCH(camldo1, CAMLDO1),
 	BCM590XX_MATCH(camldo2, CAMLDO2),
 	BCM590XX_MATCH(simldo1, SIMLDO1),
 	BCM590XX_MATCH(simldo2, SIMLDO2),
 	BCM590XX_MATCH(sdldo, SDLDO),
 	BCM590XX_MATCH(sdxldo, SDXLDO),
 	BCM590XX_MATCH(mmcldo1, MMCLDO1),
 	BCM590XX_MATCH(mmcldo2, MMCLDO2),
 	BCM590XX_MATCH(audldo, AUDLDO),
 	BCM590XX_MATCH(micldo, MICLDO),
 	BCM590XX_MATCH(usbldo, USBLDO),
 	BCM590XX_MATCH(vibldo, VIBLDO),
 	BCM590XX_MATCH(csr, CSR),
 	BCM590XX_MATCH(iosr1, IOSR1),
 	BCM590XX_MATCH(iosr2, IOSR2),
 	BCM590XX_MATCH(msr, MSR),
 	BCM590XX_MATCH(sdsr1, SDSR1),
 	BCM590XX_MATCH(sdsr2, SDSR2),
 	BCM590XX_MATCH(vsr, VSR),
 	BCM590XX_MATCH(gpldo1, GPLDO1),
 	BCM590XX_MATCH(gpldo2, GPLDO2),
 	BCM590XX_MATCH(gpldo3, GPLDO3),
 	BCM590XX_MATCH(gpldo4, GPLDO4),
 	BCM590XX_MATCH(gpldo5, GPLDO5),
 	BCM590XX_MATCH(gpldo6, GPLDO6),
 	BCM590XX_MATCH(vbus, VBUS),
 };

 static struct bcm590xx_board *bcm590xx_parse_dt_reg_data(
 		struct platform_device *pdev,
 		struct of_regulator_match **bcm590xx_reg_matches)
 {
 	struct bcm590xx_board *data;
 	struct device_node *np = pdev->dev.parent->of_node;
 	struct device_node *regulators;
 	struct of_regulator_match *matches = bcm590xx_matches;
 	int count = ARRAY_SIZE(bcm590xx_matches);
 	int idx = 0;
 	int ret;

 	if (!np) {
 		dev_err(&pdev->dev, "of node not found\n");
 		return NULL;
 	}

 	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
 	if (!data)
 		return NULL;

 	np = of_node_get(np);
 	regulators = of_get_child_by_name(np, "regulators");
 	if (!regulators) {
 		dev_warn(&pdev->dev, "regulator node not found\n");
 		return NULL;
 	}

 	ret = of_regulator_match(&pdev->dev, regulators, matches, count);
 	of_node_put(regulators);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
 			ret);
 		return NULL;
 	}

 	*bcm590xx_reg_matches = matches;

 	for (idx = 0; idx < count; idx++) {
 		if (!matches[idx].init_data || !matches[idx].of_node)
 			continue;

 		data->bcm590xx_pmu_init_data[idx] = matches[idx].init_data;
 	}

 	return data;
 }

 static int bcm590xx_probe(struct platform_device *pdev)
 {
 	struct bcm590xx *bcm590xx = dev_get_drvdata(pdev->dev.parent);
 	struct bcm590xx_board *pmu_data = NULL;
 	struct bcm590xx_reg *pmu;
 	struct regulator_config config = { };
 	struct bcm590xx_info *info;
 	struct regulator_init_data *reg_data;
 	struct regulator_dev *rdev;
 	struct of_regulator_match *bcm590xx_reg_matches = NULL;
 	int i;

 	pmu_data = bcm590xx_parse_dt_reg_data(pdev,
 					      &bcm590xx_reg_matches);

 	pmu = devm_kzalloc(&pdev->dev, sizeof(*pmu), GFP_KERNEL);
 	if (!pmu)
 		return -ENOMEM;

 	pmu->mfd = bcm590xx;

 	platform_set_drvdata(pdev, pmu);

 	pmu->desc = devm_kzalloc(&pdev->dev, BCM590XX_NUM_REGS *
 			sizeof(struct regulator_desc), GFP_KERNEL);
 	if (!pmu->desc)
 		return -ENOMEM;

 	info = bcm590xx_regs;

 	for (i = 0; i < BCM590XX_NUM_REGS; i++, info++) {
 		if (pmu_data)
 			reg_data = pmu_data->bcm590xx_pmu_init_data[i];
 		else
 			reg_data = NULL;

 		/* Register the regulators */
 		pmu->desc[i].name = info->name;
 		pmu->desc[i].supply_name = info->vin_name;
 		pmu->desc[i].id = i;
 		pmu->desc[i].volt_table = info->volt_table;
 		pmu->desc[i].n_voltages = info->n_voltages;
 		pmu->desc[i].linear_ranges = info->linear_ranges;
 		pmu->desc[i].n_linear_ranges = info->n_linear_ranges;

 		if ((BCM590XX_REG_IS_LDO(i)) || (BCM590XX_REG_IS_GPLDO(i))) {
 			pmu->desc[i].ops = &bcm590xx_ops_ldo;
 			pmu->desc[i].vsel_mask = BCM590XX_LDO_VSEL_MASK;
 		} else if (BCM590XX_REG_IS_VBUS(i))
 			pmu->desc[i].ops = &bcm590xx_ops_vbus;
 		else {
 			pmu->desc[i].ops = &bcm590xx_ops_dcdc;
 			pmu->desc[i].vsel_mask = BCM590XX_SR_VSEL_MASK;
 		}

 		if (BCM590XX_REG_IS_VBUS(i))
 			pmu->desc[i].enable_mask = BCM590XX_VBUS_ENABLE;
 		else {
 			pmu->desc[i].vsel_reg = bcm590xx_get_vsel_register(i);
 			pmu->desc[i].enable_is_inverted = true;
 			pmu->desc[i].enable_mask = BCM590XX_REG_ENABLE;
 		}
 		pmu->desc[i].enable_reg = bcm590xx_get_enable_register(i);
 		pmu->desc[i].type = REGULATOR_VOLTAGE;
 		pmu->desc[i].owner = THIS_MODULE;

 		config.dev = bcm590xx->dev;
 		config.init_data = reg_data;
 		config.driver_data = pmu;
 		if (BCM590XX_REG_IS_GPLDO(i) || BCM590XX_REG_IS_VBUS(i))
 			config.regmap = bcm590xx->regmap_sec;
 		else
 			config.regmap = bcm590xx->regmap_pri;

 		if (bcm590xx_reg_matches)
 			config.of_node = bcm590xx_reg_matches[i].of_node;

 		rdev = devm_regulator_register(&pdev->dev, &pmu->desc[i],
 					       &config);
 		if (IS_ERR(rdev)) {
 			dev_err(bcm590xx->dev,
 				"failed to register %s regulator\n",
 				pdev->name);
 			return PTR_ERR(rdev);
 		}
 	}

 	return 0;
 }

 static struct platform_driver bcm590xx_regulator_driver = {
 	.driver = {
 		.name = "bcm590xx-vregs",
 		.owner = THIS_MODULE,
 	},
 	.probe = bcm590xx_probe,
 };
 module_platform_driver(bcm590xx_regulator_driver);

 MODULE_AUTHOR("Matt Porter <mporter@linaro.org>");
 MODULE_DESCRIPTION("BCM590xx voltage regulator driver");
 MODULE_LICENSE("GPL v2");
 MODULE_ALIAS("platform:bcm590xx-vregs");
	/*
	* Broadcom BCM590xx regulator driver
	*
	* Copyright 2014 Linaro Limited
	* Author: Matt Porter <mporter@linaro.org>
	*
	* 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/err.h>
	#include <linux/init.h>
	#include <linux/kernel.h>
	#include <linux/mfd/bcm590xx.h>
	#include <linux/module.h>
	#include <linux/of.h>
	#include <linux/platform_device.h>
	#include <linux/regulator/driver.h>
	#include <linux/regulator/machine.h>
	#include <linux/regulator/of_regulator.h>
	#include <linux/slab.h>

	/* I2C slave 0 registers */
	#define BCM590XX_RFLDOPMCTRL1 0x60
	#define BCM590XX_IOSR1PMCTRL1 0x7a
	#define BCM590XX_IOSR2PMCTRL1 0x7c
	#define BCM590XX_CSRPMCTRL1 0x7e
	#define BCM590XX_SDSR1PMCTRL1 0x82
	#define BCM590XX_SDSR2PMCTRL1 0x86
	#define BCM590XX_MSRPMCTRL1 0x8a
	#define BCM590XX_VSRPMCTRL1 0x8e
	#define BCM590XX_RFLDOCTRL 0x96
	#define BCM590XX_CSRVOUT1 0xc0

	/* I2C slave 1 registers */
	#define BCM590XX_GPLDO5PMCTRL1 0x16
	#define BCM590XX_GPLDO6PMCTRL1 0x18
	#define BCM590XX_GPLDO1CTRL 0x1a
	#define BCM590XX_GPLDO2CTRL 0x1b
	#define BCM590XX_GPLDO3CTRL 0x1c
	#define BCM590XX_GPLDO4CTRL 0x1d
	#define BCM590XX_GPLDO5CTRL 0x1e
	#define BCM590XX_GPLDO6CTRL 0x1f
	#define BCM590XX_OTG_CTRL 0x40
	#define BCM590XX_GPLDO1PMCTRL1 0x57
	#define BCM590XX_GPLDO2PMCTRL1 0x59
	#define BCM590XX_GPLDO3PMCTRL1 0x5b
	#define BCM590XX_GPLDO4PMCTRL1 0x5d

	#define BCM590XX_REG_ENABLE BIT(7)
	#define BCM590XX_VBUS_ENABLE BIT(2)
	#define BCM590XX_LDO_VSEL_MASK GENMASK(5, 3)
	#define BCM590XX_SR_VSEL_MASK GENMASK(5, 0)

	/*
	* RFLDO to VSR regulators are
	* accessed via I2C slave 0
	*/

	/* LDO regulator IDs */
	#define BCM590XX_REG_RFLDO 0
	#define BCM590XX_REG_CAMLDO1 1
	#define BCM590XX_REG_CAMLDO2 2
	#define BCM590XX_REG_SIMLDO1 3
	#define BCM590XX_REG_SIMLDO2 4
	#define BCM590XX_REG_SDLDO 5
	#define BCM590XX_REG_SDXLDO 6
	#define BCM590XX_REG_MMCLDO1 7
	#define BCM590XX_REG_MMCLDO2 8
	#define BCM590XX_REG_AUDLDO 9
	#define BCM590XX_REG_MICLDO 10
	#define BCM590XX_REG_USBLDO 11
	#define BCM590XX_REG_VIBLDO 12

	/* DCDC regulator IDs */
	#define BCM590XX_REG_CSR 13
	#define BCM590XX_REG_IOSR1 14
	#define BCM590XX_REG_IOSR2 15
	#define BCM590XX_REG_MSR 16
	#define BCM590XX_REG_SDSR1 17
	#define BCM590XX_REG_SDSR2 18
	#define BCM590XX_REG_VSR 19

	/*
	* GPLDO1 to VBUS regulators are
	* accessed via I2C slave 1
	*/

	#define BCM590XX_REG_GPLDO1 20
	#define BCM590XX_REG_GPLDO2 21
	#define BCM590XX_REG_GPLDO3 22
	#define BCM590XX_REG_GPLDO4 23
	#define BCM590XX_REG_GPLDO5 24
	#define BCM590XX_REG_GPLDO6 25
	#define BCM590XX_REG_VBUS 26

	#define BCM590XX_NUM_REGS 27

	#define BCM590XX_REG_IS_LDO(n) (n < BCM590XX_REG_CSR)
	#define BCM590XX_REG_IS_GPLDO(n) \
	((n > BCM590XX_REG_VSR) && (n < BCM590XX_REG_VBUS))
	#define BCM590XX_REG_IS_VBUS(n) (n == BCM590XX_REG_VBUS)

	struct bcm590xx_board {
	struct regulator_init_data *bcm590xx_pmu_init_data[BCM590XX_NUM_REGS];
	};

	/* LDO group A: supported voltages in microvolts */
	static const unsigned int ldo_a_table[] = {
	1200000, 1800000, 2500000, 2700000, 2800000,
	2900000, 3000000, 3300000,
	};

	/* LDO group C: supported voltages in microvolts */
	static const unsigned int ldo_c_table[] = {
	3100000, 1800000, 2500000, 2700000, 2800000,
	2900000, 3000000, 3300000,
	};

	static const unsigned int ldo_vbus[] = {
	5000000,
	};

	/* DCDC group CSR: supported voltages in microvolts */
	static const struct regulator_linear_range dcdc_csr_ranges[] = {
	REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000),
	REGULATOR_LINEAR_RANGE(1360000, 51, 55, 20000),
	REGULATOR_LINEAR_RANGE(900000, 56, 63, 0),
	};

	/* DCDC group IOSR1: supported voltages in microvolts */
	static const struct regulator_linear_range dcdc_iosr1_ranges[] = {
	REGULATOR_LINEAR_RANGE(860000, 2, 51, 10000),
	REGULATOR_LINEAR_RANGE(1500000, 52, 52, 0),
	REGULATOR_LINEAR_RANGE(1800000, 53, 53, 0),
	REGULATOR_LINEAR_RANGE(900000, 54, 63, 0),
	};

	/* DCDC group SDSR1: supported voltages in microvolts */
	static const struct regulator_linear_range dcdc_sdsr1_ranges[] = {
	REGULATOR_LINEAR_RANGE(860000, 2, 50, 10000),
	REGULATOR_LINEAR_RANGE(1340000, 51, 51, 0),
	REGULATOR_LINEAR_RANGE(900000, 52, 63, 0),
	};

	struct bcm590xx_info {
	const char *name;
	const char *vin_name;
	u8 n_voltages;
	const unsigned int *volt_table;
	u8 n_linear_ranges;
	const struct regulator_linear_range *linear_ranges;
	};

	#define BCM590XX_REG_TABLE(_name, _table) \
	{ \
	.name = #_name, \
	.n_voltages = ARRAY_SIZE(_table), \
	.volt_table = _table, \
	}

	#define BCM590XX_REG_RANGES(_name, _ranges) \
	{ \
	.name = #_name, \
	.n_voltages = 64, \
	.n_linear_ranges = ARRAY_SIZE(_ranges), \
	.linear_ranges = _ranges, \
	}

	static struct bcm590xx_info bcm590xx_regs[] = {
	BCM590XX_REG_TABLE(rfldo, ldo_a_table),
	BCM590XX_REG_TABLE(camldo1, ldo_c_table),
	BCM590XX_REG_TABLE(camldo2, ldo_c_table),
	BCM590XX_REG_TABLE(simldo1, ldo_a_table),
	BCM590XX_REG_TABLE(simldo2, ldo_a_table),
	BCM590XX_REG_TABLE(sdldo, ldo_c_table),
	BCM590XX_REG_TABLE(sdxldo, ldo_a_table),
	BCM590XX_REG_TABLE(mmcldo1, ldo_a_table),
	BCM590XX_REG_TABLE(mmcldo2, ldo_a_table),
	BCM590XX_REG_TABLE(audldo, ldo_a_table),
	BCM590XX_REG_TABLE(micldo, ldo_a_table),
	BCM590XX_REG_TABLE(usbldo, ldo_a_table),
	BCM590XX_REG_TABLE(vibldo, ldo_c_table),
	BCM590XX_REG_RANGES(csr, dcdc_csr_ranges),
	BCM590XX_REG_RANGES(iosr1, dcdc_iosr1_ranges),
	BCM590XX_REG_RANGES(iosr2, dcdc_iosr1_ranges),
	BCM590XX_REG_RANGES(msr, dcdc_iosr1_ranges),
	BCM590XX_REG_RANGES(sdsr1, dcdc_sdsr1_ranges),
	BCM590XX_REG_RANGES(sdsr2, dcdc_iosr1_ranges),
	BCM590XX_REG_RANGES(vsr, dcdc_iosr1_ranges),
	BCM590XX_REG_TABLE(gpldo1, ldo_a_table),
	BCM590XX_REG_TABLE(gpldo2, ldo_a_table),
	BCM590XX_REG_TABLE(gpldo3, ldo_a_table),
	BCM590XX_REG_TABLE(gpldo4, ldo_a_table),
	BCM590XX_REG_TABLE(gpldo5, ldo_a_table),
	BCM590XX_REG_TABLE(gpldo6, ldo_a_table),
	BCM590XX_REG_TABLE(vbus, ldo_vbus),
	};

	struct bcm590xx_reg {
	struct regulator_desc *desc;
	struct bcm590xx *mfd;
	};

	static int bcm590xx_get_vsel_register(int id)
	{
	if (BCM590XX_REG_IS_LDO(id))
	return BCM590XX_RFLDOCTRL + id;
	else if (BCM590XX_REG_IS_GPLDO(id))
	return BCM590XX_GPLDO1CTRL + id;
	else
	return BCM590XX_CSRVOUT1 + (id - BCM590XX_REG_CSR) * 3;
	}

	static int bcm590xx_get_enable_register(int id)
	{
	int reg = 0;

	if (BCM590XX_REG_IS_LDO(id))
	reg = BCM590XX_RFLDOPMCTRL1 + id * 2;
	else if (BCM590XX_REG_IS_GPLDO(id))
	reg = BCM590XX_GPLDO1PMCTRL1 + id * 2;
	else
	switch (id) {
	case BCM590XX_REG_CSR:
	reg = BCM590XX_CSRPMCTRL1;
	break;
	case BCM590XX_REG_IOSR1:
	reg = BCM590XX_IOSR1PMCTRL1;
	break;
	case BCM590XX_REG_IOSR2:
	reg = BCM590XX_IOSR2PMCTRL1;
	break;
	case BCM590XX_REG_MSR:
	reg = BCM590XX_MSRPMCTRL1;
	break;
	case BCM590XX_REG_SDSR1:
	reg = BCM590XX_SDSR1PMCTRL1;
	break;
	case BCM590XX_REG_SDSR2:
	reg = BCM590XX_SDSR2PMCTRL1;
	break;
	case BCM590XX_REG_VBUS:
	reg = BCM590XX_OTG_CTRL;
	};


	return reg;
	}

	static struct regulator_ops bcm590xx_ops_ldo = {
	.is_enabled = regulator_is_enabled_regmap,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.list_voltage = regulator_list_voltage_table,
	.map_voltage = regulator_map_voltage_iterate,
	};

	static struct regulator_ops bcm590xx_ops_dcdc = {
	.is_enabled = regulator_is_enabled_regmap,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.list_voltage = regulator_list_voltage_linear_range,
	.map_voltage = regulator_map_voltage_linear_range,
	};

	static struct regulator_ops bcm590xx_ops_vbus = {
	.is_enabled = regulator_is_enabled_regmap,
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	};

	#define BCM590XX_MATCH(_name, _id) \
	{ \
	.name = #_name, \
	.driver_data = (void *)&bcm590xx_regs[BCM590XX_REG_##_id], \
	}

	static struct of_regulator_match bcm590xx_matches[] = {
	BCM590XX_MATCH(rfldo, RFLDO),
	BCM590XX_MATCH(camldo1, CAMLDO1),
	BCM590XX_MATCH(camldo2, CAMLDO2),
	BCM590XX_MATCH(simldo1, SIMLDO1),
	BCM590XX_MATCH(simldo2, SIMLDO2),
	BCM590XX_MATCH(sdldo, SDLDO),
	BCM590XX_MATCH(sdxldo, SDXLDO),
	BCM590XX_MATCH(mmcldo1, MMCLDO1),
	BCM590XX_MATCH(mmcldo2, MMCLDO2),
	BCM590XX_MATCH(audldo, AUDLDO),
	BCM590XX_MATCH(micldo, MICLDO),
	BCM590XX_MATCH(usbldo, USBLDO),
	BCM590XX_MATCH(vibldo, VIBLDO),
	BCM590XX_MATCH(csr, CSR),
	BCM590XX_MATCH(iosr1, IOSR1),
	BCM590XX_MATCH(iosr2, IOSR2),
	BCM590XX_MATCH(msr, MSR),
	BCM590XX_MATCH(sdsr1, SDSR1),
	BCM590XX_MATCH(sdsr2, SDSR2),
	BCM590XX_MATCH(vsr, VSR),
	BCM590XX_MATCH(gpldo1, GPLDO1),
	BCM590XX_MATCH(gpldo2, GPLDO2),
	BCM590XX_MATCH(gpldo3, GPLDO3),
	BCM590XX_MATCH(gpldo4, GPLDO4),
	BCM590XX_MATCH(gpldo5, GPLDO5),
	BCM590XX_MATCH(gpldo6, GPLDO6),
	BCM590XX_MATCH(vbus, VBUS),
	};

	static struct bcm590xx_board *bcm590xx_parse_dt_reg_data(
	struct platform_device *pdev,
	struct of_regulator_match **bcm590xx_reg_matches)
	{
	struct bcm590xx_board *data;
	struct device_node *np = pdev->dev.parent->of_node;
	struct device_node *regulators;
	struct of_regulator_match *matches = bcm590xx_matches;
	int count = ARRAY_SIZE(bcm590xx_matches);
	int idx = 0;
	int ret;

	if (!np) {
	dev_err(&pdev->dev, "of node not found\n");
	return NULL;
	}

	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
	if (!data)
	return NULL;

	np = of_node_get(np);
	regulators = of_get_child_by_name(np, "regulators");
	if (!regulators) {
	dev_warn(&pdev->dev, "regulator node not found\n");
	return NULL;
	}

	ret = of_regulator_match(&pdev->dev, regulators, matches, count);
	of_node_put(regulators);
	if (ret < 0) {
	dev_err(&pdev->dev, "Error parsing regulator init data: %d\n",
	ret);
	return NULL;
	}

	*bcm590xx_reg_matches = matches;

	for (idx = 0; idx < count; idx++) {
	if (!matches[idx].init_data \|\| !matches[idx].of_node)
	continue;

	data->bcm590xx_pmu_init_data[idx] = matches[idx].init_data;
	}

	return data;
	}

	static int bcm590xx_probe(struct platform_device *pdev)
	{
	struct bcm590xx *bcm590xx = dev_get_drvdata(pdev->dev.parent);
	struct bcm590xx_board *pmu_data = NULL;
	struct bcm590xx_reg *pmu;
	struct regulator_config config = { };
	struct bcm590xx_info *info;
	struct regulator_init_data *reg_data;
	struct regulator_dev *rdev;
	struct of_regulator_match *bcm590xx_reg_matches = NULL;
	int i;

	pmu_data = bcm590xx_parse_dt_reg_data(pdev,
	&bcm590xx_reg_matches);

	pmu = devm_kzalloc(&pdev->dev, sizeof(*pmu), GFP_KERNEL);
	if (!pmu)
	return -ENOMEM;

	pmu->mfd = bcm590xx;

	platform_set_drvdata(pdev, pmu);

	pmu->desc = devm_kzalloc(&pdev->dev, BCM590XX_NUM_REGS *
	sizeof(struct regulator_desc), GFP_KERNEL);
	if (!pmu->desc)
	return -ENOMEM;

	info = bcm590xx_regs;

	for (i = 0; i < BCM590XX_NUM_REGS; i++, info++) {
	if (pmu_data)
	reg_data = pmu_data->bcm590xx_pmu_init_data[i];
	else
	reg_data = NULL;

	/* Register the regulators */
	pmu->desc[i].name = info->name;
	pmu->desc[i].supply_name = info->vin_name;
	pmu->desc[i].id = i;
	pmu->desc[i].volt_table = info->volt_table;
	pmu->desc[i].n_voltages = info->n_voltages;
	pmu->desc[i].linear_ranges = info->linear_ranges;
	pmu->desc[i].n_linear_ranges = info->n_linear_ranges;

	if ((BCM590XX_REG_IS_LDO(i)) \|\| (BCM590XX_REG_IS_GPLDO(i))) {
	pmu->desc[i].ops = &bcm590xx_ops_ldo;
	pmu->desc[i].vsel_mask = BCM590XX_LDO_VSEL_MASK;
	} else if (BCM590XX_REG_IS_VBUS(i))
	pmu->desc[i].ops = &bcm590xx_ops_vbus;
	else {
	pmu->desc[i].ops = &bcm590xx_ops_dcdc;
	pmu->desc[i].vsel_mask = BCM590XX_SR_VSEL_MASK;
	}

	if (BCM590XX_REG_IS_VBUS(i))
	pmu->desc[i].enable_mask = BCM590XX_VBUS_ENABLE;
	else {
	pmu->desc[i].vsel_reg = bcm590xx_get_vsel_register(i);
	pmu->desc[i].enable_is_inverted = true;
	pmu->desc[i].enable_mask = BCM590XX_REG_ENABLE;
	}
	pmu->desc[i].enable_reg = bcm590xx_get_enable_register(i);
	pmu->desc[i].type = REGULATOR_VOLTAGE;
	pmu->desc[i].owner = THIS_MODULE;

	config.dev = bcm590xx->dev;
	config.init_data = reg_data;
	config.driver_data = pmu;
	if (BCM590XX_REG_IS_GPLDO(i) \|\| BCM590XX_REG_IS_VBUS(i))
	config.regmap = bcm590xx->regmap_sec;
	else
	config.regmap = bcm590xx->regmap_pri;

	if (bcm590xx_reg_matches)
	config.of_node = bcm590xx_reg_matches[i].of_node;

	rdev = devm_regulator_register(&pdev->dev, &pmu->desc[i],
	&config);
	if (IS_ERR(rdev)) {
	dev_err(bcm590xx->dev,
	"failed to register %s regulator\n",
	pdev->name);
	return PTR_ERR(rdev);
	}
	}

	return 0;
	}

	static struct platform_driver bcm590xx_regulator_driver = {
	.driver = {
	.name = "bcm590xx-vregs",
	.owner = THIS_MODULE,
	},
	.probe = bcm590xx_probe,
	};
	module_platform_driver(bcm590xx_regulator_driver);

	MODULE_AUTHOR("Matt Porter <mporter@linaro.org>");
	MODULE_DESCRIPTION("BCM590xx voltage regulator driver");
	MODULE_LICENSE("GPL v2");
	MODULE_ALIAS("platform:bcm590xx-vregs");