regulator: pfuze100: add pfuze100 regulator driver (3784b6d6) · Commits · e / devices / android_kernel_oneplus_sm7250

Documentation/devicetree/bindings/regulator/pfuze100.txt

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		PFUZE100 family of regulators

		Required properties:
		- compatible: "fsl,pfuze100"
		- reg: I2C slave address
		- regulators: This is the list of child nodes that specify the regulator
		initialization data for defined regulators. Please refer to below doc
		Documentation/devicetree/bindings/regulator/regulator.txt.

		The valid names for regulators are:
		sw1ab,sw1c,sw2,sw3a,sw3b,sw4,swbst,vsnvs,vrefddr,vgen1~vgen6

		Each regulator is defined using the standard binding for regulators.

		Example:

		pmic: pfuze100@08 {
		compatible = "fsl,pfuze100";
		reg = <0x08>;

		regulators {
		sw1a_reg: sw1ab {
		regulator-min-microvolt = <300000>;
		regulator-max-microvolt = <1875000>;
		regulator-boot-on;
		regulator-always-on;
		regulator-ramp-delay = <6250>;
		};

		sw1c_reg: sw1c {
		regulator-min-microvolt = <300000>;
		regulator-max-microvolt = <1875000>;
		regulator-boot-on;
		regulator-always-on;
		};

		sw2_reg: sw2 {
		regulator-min-microvolt = <800000>;
		regulator-max-microvolt = <3300000>;
		regulator-boot-on;
		regulator-always-on;
		};

		sw3a_reg: sw3a {
		regulator-min-microvolt = <400000>;
		regulator-max-microvolt = <1975000>;
		regulator-boot-on;
		regulator-always-on;
		};

		sw3b_reg: sw3b {
		regulator-min-microvolt = <400000>;
		regulator-max-microvolt = <1975000>;
		regulator-boot-on;
		regulator-always-on;
		};

		sw4_reg: sw4 {
		regulator-min-microvolt = <800000>;
		regulator-max-microvolt = <3300000>;
		};

		swbst_reg: swbst {
		regulator-min-microvolt = <5000000>;
		regulator-max-microvolt = <5150000>;
		};

		snvs_reg: vsnvs {
		regulator-min-microvolt = <1000000>;
		regulator-max-microvolt = <3000000>;
		regulator-boot-on;
		regulator-always-on;
		};

		vref_reg: vrefddr {
		regulator-boot-on;
		regulator-always-on;
		};

		vgen1_reg: vgen1 {
		regulator-min-microvolt = <800000>;
		regulator-max-microvolt = <1550000>;
		};

		vgen2_reg: vgen2 {
		regulator-min-microvolt = <800000>;
		regulator-max-microvolt = <1550000>;
		};

		vgen3_reg: vgen3 {
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <3300000>;
		};

		vgen4_reg: vgen4 {
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <3300000>;
		regulator-always-on;
		};

		vgen5_reg: vgen5 {
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <3300000>;
		regulator-always-on;
		};

		vgen6_reg: vgen6 {
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <3300000>;
		regulator-always-on;
		};
		};
		};

drivers/regulator/Kconfig

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		@@ -355,6 +355,13 @@ config REGULATOR_PCF50633
		Say Y here to support the voltage regulators and convertors
		on PCF50633

		config REGULATOR_PFUZE100
		tristate "Support regulators on Freescale PFUZE100 PMIC"
		depends on I2C
		help
		Say y here to support the regulators found on the Freescale PFUZE100
		PMIC.

		config REGULATOR_RC5T583
		tristate "RICOH RC5T583 Power regulators"
		depends on MFD_RC5T583

drivers/regulator/Makefile

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		@@ -46,6 +46,7 @@ obj-$(CONFIG_REGULATOR_MC13783) += mc13783-regulator.o
		obj-$(CONFIG_REGULATOR_MC13892) += mc13892-regulator.o
		obj-$(CONFIG_REGULATOR_MC13XXX_CORE) += mc13xxx-regulator-core.o
		obj-$(CONFIG_REGULATOR_PALMAS) += palmas-regulator.o
		obj-$(CONFIG_REGULATOR_PFUZE100) += pfuze100-regulator.o
		obj-$(CONFIG_REGULATOR_TPS51632) += tps51632-regulator.o
		obj-$(CONFIG_REGULATOR_PCAP) += pcap-regulator.o
		obj-$(CONFIG_REGULATOR_PCF50633) += pcf50633-regulator.o

drivers/regulator/pfuze100-regulator.c

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		/*
		* Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
		*
		* 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.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*
		* You should have received a copy of the GNU General Public License
		* along with this program; if not, write to the Free Software
		* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		*/
		#include <linux/kernel.h>
		#include <linux/module.h>
		#include <linux/init.h>
		#include <linux/err.h>
		#include <linux/of.h>
		#include <linux/of_device.h>
		#include <linux/regulator/of_regulator.h>
		#include <linux/platform_device.h>
		#include <linux/regulator/driver.h>
		#include <linux/regulator/machine.h>
		#include <linux/regulator/pfuze100.h>
		#include <linux/i2c.h>
		#include <linux/slab.h>
		#include <linux/regmap.h>

		#define PFUZE_NUMREGS 128
		#define PFUZE100_VOL_OFFSET 0
		#define PFUZE100_STANDBY_OFFSET 1
		#define PFUZE100_MODE_OFFSET 3
		#define PFUZE100_CONF_OFFSET 4

		#define PFUZE100_DEVICEID 0x0
		#define PFUZE100_REVID 0x3
		#define PFUZE100_FABID 0x3

		#define PFUZE100_SW1ABVOL 0x20
		#define PFUZE100_SW1CVOL 0x2e
		#define PFUZE100_SW2VOL 0x35
		#define PFUZE100_SW3AVOL 0x3c
		#define PFUZE100_SW3BVOL 0x43
		#define PFUZE100_SW4VOL 0x4a
		#define PFUZE100_SWBSTCON1 0x66
		#define PFUZE100_VREFDDRCON 0x6a
		#define PFUZE100_VSNVSVOL 0x6b
		#define PFUZE100_VGEN1VOL 0x6c
		#define PFUZE100_VGEN2VOL 0x6d
		#define PFUZE100_VGEN3VOL 0x6e
		#define PFUZE100_VGEN4VOL 0x6f
		#define PFUZE100_VGEN5VOL 0x70
		#define PFUZE100_VGEN6VOL 0x71

		struct pfuze_regulator {
		struct regulator_desc desc;
		unsigned char stby_reg;
		unsigned char stby_mask;
		};

		struct pfuze_chip {
		struct regmap *regmap;
		struct device *dev;
		struct pfuze_regulator regulator_descs[PFUZE100_MAX_REGULATOR];
		struct regulator_dev *regulators[PFUZE100_MAX_REGULATOR];
		};

		static const int pfuze100_swbst[] = {
		5000000, 5050000, 5100000, 5150000,
		};

		static const int pfuze100_vsnvs[] = {
		1000000, 1100000, 1200000, 1300000, 1500000, 1800000, 3000000,
		};

		static const struct i2c_device_id pfuze_device_id[] = {
		{.name = "pfuze100"},
		{},
		};
		MODULE_DEVICE_TABLE(i2c, pfuze_device_id);

		static const struct of_device_id pfuze_dt_ids[] = {
		{ .compatible = "fsl,pfuze100" },
		{},
		};
		MODULE_DEVICE_TABLE(of, pfuze_dt_ids);

		static int pfuze100_set_ramp_delay(struct regulator_dev *rdev, int ramp_delay)
		{
		struct pfuze_chip *pfuze100 = rdev_get_drvdata(rdev);
		int id = rdev->desc->id;
		unsigned int val, ramp_bits, reg;
		int ret;

		if (id < PFUZE100_SWBST) {
		if (id == PFUZE100_SW1AB)
		reg = PFUZE100_SW1ABVOL;
		else
		reg = PFUZE100_SW1CVOL + (id - PFUZE100_SW1C) * 7;
		regmap_read(pfuze100->regmap, reg, &val);

		if (id <= PFUZE100_SW1C)
		ramp_delay = 25000 / (2 * ramp_delay);
		else if (val & 0x40)
		ramp_delay = 50000 / (4 * ramp_delay);
		else
		ramp_delay = 25000 / (2 * ramp_delay);

		ramp_bits = (ramp_delay >> 1) - (ramp_delay >> 3);
		ret = regmap_update_bits(pfuze100->regmap, reg + 4 , 0xc0,
		ramp_bits << 6);
		if (ret < 0)
		dev_err(pfuze100->dev, "ramp failed, err %d\n", ret);
		} else
		ret = -EACCES;

		return ret;
		}

		static struct regulator_ops pfuze100_ldo_regulator_ops = {
		.enable = regulator_enable_regmap,
		.disable = regulator_disable_regmap,
		.is_enabled = regulator_is_enabled_regmap,
		.list_voltage = regulator_list_voltage_linear,
		.set_voltage_sel = regulator_set_voltage_sel_regmap,
		.get_voltage_sel = regulator_get_voltage_sel_regmap,
		};

		static struct regulator_ops pfuze100_fixed_regulator_ops = {
		.list_voltage = regulator_list_voltage_linear,
		};

		static struct regulator_ops pfuze100_sw_regulator_ops = {
		.list_voltage = regulator_list_voltage_linear,
		.set_voltage_sel = regulator_set_voltage_sel_regmap,
		.get_voltage_sel = regulator_get_voltage_sel_regmap,
		.set_voltage_time_sel = regulator_set_voltage_time_sel,
		.set_ramp_delay = pfuze100_set_ramp_delay,
		};

		static struct regulator_ops pfuze100_swb_regulator_ops = {
		.list_voltage = regulator_list_voltage_table,
		.set_voltage_sel = regulator_set_voltage_sel_regmap,
		.get_voltage_sel = regulator_get_voltage_sel_regmap,

		};

		#define PFUZE100_FIXED_REG(_name, base, voltage) \
		[PFUZE100_ ## _name] = { \
		.desc = { \
		.name = #_name, \
		.n_voltages = 1, \
		.ops = &pfuze100_fixed_regulator_ops, \
		.type = REGULATOR_VOLTAGE, \
		.id = PFUZE100_ ## _name, \
		.owner = THIS_MODULE, \
		.min_uV = (voltage), \
		.enable_reg = (base), \
		.enable_mask = 0x10, \
		}, \
		}

		#define PFUZE100_SW_REG(_name, base, min, max, step) \
		[PFUZE100_ ## _name] = { \
		.desc = { \
		.name = #_name,\
		.n_voltages = ((max) - (min)) / (step) + 1, \
		.ops = &pfuze100_sw_regulator_ops, \
		.type = REGULATOR_VOLTAGE, \
		.id = PFUZE100_ ## _name, \
		.owner = THIS_MODULE, \
		.min_uV = (min), \
		.uV_step = (step), \
		.vsel_reg = (base) + PFUZE100_VOL_OFFSET, \
		.vsel_mask = 0x3f, \
		}, \
		.stby_reg = (base) + PFUZE100_STANDBY_OFFSET, \
		.stby_mask = 0x3f, \
		}

		#define PFUZE100_SWB_REG(_name, base, mask, voltages) \
		[PFUZE100_ ## _name] = { \
		.desc = { \
		.name = #_name, \
		.n_voltages = ARRAY_SIZE(voltages), \
		.ops = &pfuze100_swb_regulator_ops, \
		.type = REGULATOR_VOLTAGE, \
		.id = PFUZE100_ ## _name, \
		.owner = THIS_MODULE, \
		.volt_table = voltages, \
		.vsel_reg = (base), \
		.vsel_mask = (mask), \
		}, \
		}

		#define PFUZE100_VGEN_REG(_name, base, min, max, step) \
		[PFUZE100_ ## _name] = { \
		.desc = { \
		.name = #_name, \
		.n_voltages = ((max) - (min)) / (step) + 1, \
		.ops = &pfuze100_ldo_regulator_ops, \
		.type = REGULATOR_VOLTAGE, \
		.id = PFUZE100_ ## _name, \
		.owner = THIS_MODULE, \
		.min_uV = (min), \
		.uV_step = (step), \
		.vsel_reg = (base), \
		.vsel_mask = 0xf, \
		.enable_reg = (base), \
		.enable_mask = 0x10, \
		}, \
		.stby_reg = (base), \
		.stby_mask = 0x20, \
		}

		static struct pfuze_regulator pfuze100_regulators[] = {
		PFUZE100_SW_REG(SW1AB, PFUZE100_SW1ABVOL, 300000, 1875000, 25000),
		PFUZE100_SW_REG(SW1C, PFUZE100_SW1CVOL, 300000, 1875000, 25000),
		PFUZE100_SW_REG(SW2, PFUZE100_SW2VOL, 400000, 1975000, 25000),
		PFUZE100_SW_REG(SW3A, PFUZE100_SW3AVOL, 400000, 1975000, 25000),
		PFUZE100_SW_REG(SW3B, PFUZE100_SW3BVOL, 400000, 1975000, 25000),
		PFUZE100_SW_REG(SW4, PFUZE100_SW4VOL, 400000, 1975000, 25000),
		PFUZE100_SWB_REG(SWBST, PFUZE100_SWBSTCON1, 0x3 , pfuze100_swbst),
		PFUZE100_SWB_REG(VSNVS, PFUZE100_VSNVSVOL, 0x7, pfuze100_vsnvs),
		PFUZE100_FIXED_REG(VREFDDR, PFUZE100_VREFDDRCON, 750000),
		PFUZE100_VGEN_REG(VGEN1, PFUZE100_VGEN1VOL, 800000, 1550000, 50000),
		PFUZE100_VGEN_REG(VGEN2, PFUZE100_VGEN2VOL, 800000, 1550000, 50000),
		PFUZE100_VGEN_REG(VGEN3, PFUZE100_VGEN3VOL, 1800000, 3300000, 100000),
		PFUZE100_VGEN_REG(VGEN4, PFUZE100_VGEN4VOL, 1800000, 3300000, 100000),
		PFUZE100_VGEN_REG(VGEN5, PFUZE100_VGEN5VOL, 1800000, 3300000, 100000),
		PFUZE100_VGEN_REG(VGEN6, PFUZE100_VGEN6VOL, 1800000, 3300000, 100000),
		};

		#ifdef CONFIG_OF
		static struct of_regulator_match pfuze100_matches[] = {
		{ .name = "sw1ab", },
		{ .name = "sw1c", },
		{ .name = "sw2", },
		{ .name = "sw3a", },
		{ .name = "sw3b", },
		{ .name = "sw4", },
		{ .name = "swbst", },
		{ .name = "vsnvs", },
		{ .name = "vrefddr", },
		{ .name = "vgen1", },
		{ .name = "vgen2", },
		{ .name = "vgen3", },
		{ .name = "vgen4", },
		{ .name = "vgen5", },
		{ .name = "vgen6", },
		};

		static int pfuze_parse_regulators_dt(struct pfuze_chip *chip)
		{
		struct device *dev = chip->dev;
		struct device_node np, parent;
		int ret;

		np = of_node_get(dev->parent->of_node);
		if (!np)
		return 0;

		parent = of_find_node_by_name(np, "regulators");
		if (!parent) {
		dev_err(dev, "regulators node not found\n");
		return -EINVAL;
		}

		ret = of_regulator_match(dev, parent, pfuze100_matches,
		ARRAY_SIZE(pfuze100_matches));

		of_node_put(parent);
		if (ret < 0) {
		dev_err(dev, "Error parsing regulator init data: %d\n",
		ret);
		return ret;
		}

		return 0;
		}

		static inline struct regulator_init_data *match_init_data(int index)
		{
		return pfuze100_matches[index].init_data;
		}

		static inline struct device_node *match_of_node(int index)
		{
		return pfuze100_matches[index].of_node;
		}
		#else
		static int pfuze_parse_regulators_dt(struct pfuze_chip *chip)
		{
		return NULL;
		}

		static inline struct regulator_init_data *match_init_data(int index)
		{
		return NULL;
		}

		static inline struct device_node *match_of_node(int index)
		{
		return NULL;
		}
		#endif

		static int pfuze_identify(struct pfuze_chip *pfuze_chip)
		{
		unsigned int value;
		int ret;

		ret = regmap_read(pfuze_chip->regmap, PFUZE100_DEVICEID, &value);
		if (ret)
		return ret;

		if (value & 0x0f) {
		dev_warn(pfuze_chip->dev, "Illegal ID: %x\n", value);
		return -ENODEV;
		}

		ret = regmap_read(pfuze_chip->regmap, PFUZE100_REVID, &value);
		if (ret)
		return ret;
		dev_info(pfuze_chip->dev,
		"Full lay: %x, Metal lay: %x\n",
		(value & 0xf0) >> 4, value & 0x0f);

		ret = regmap_read(pfuze_chip->regmap, PFUZE100_FABID, &value);
		if (ret)
		return ret;
		dev_info(pfuze_chip->dev, "FAB: %x, FIN: %x\n",
		(value & 0xc) >> 2, value & 0x3);

		return 0;
		}

		static const struct regmap_config pfuze_regmap_config = {
		.reg_bits = 8,
		.val_bits = 8,
		.max_register = PFUZE_NUMREGS,
		.cache_type = REGCACHE_RBTREE,
		};

		static int pfuze100_regulator_probe(struct i2c_client *client,
		const struct i2c_device_id *id)
		{
		struct pfuze_chip *pfuze_chip;
		struct pfuze_regulator_platform_data *pdata =
		dev_get_platdata(&client->dev);
		struct regulator_config config = { };
		int i, ret;

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

		dev_set_drvdata(&client->dev, pfuze_chip);

		memcpy(pfuze_chip->regulator_descs, pfuze100_regulators,
		sizeof(pfuze_chip->regulator_descs));

		pfuze_chip->dev = &client->dev;

		pfuze_chip->regmap = devm_regmap_init_i2c(client, &pfuze_regmap_config);
		if (IS_ERR(pfuze_chip->regmap)) {
		ret = PTR_ERR(pfuze_chip->regmap);
		dev_err(&client->dev,
		"regmap allocation failed with err %d\n", ret);
		return ret;
		}

		ret = pfuze_identify(pfuze_chip);
		if (ret) {
		dev_err(&client->dev, "unrecognized pfuze chip ID!\n");
		return ret;
		}

		ret = pfuze_parse_regulators_dt(pfuze_chip);
		if (ret)
		return ret;

		for (i = 0; i < PFUZE100_MAX_REGULATOR; i++) {
		struct regulator_init_data *init_data;
		int val;

		if (pdata)
		init_data = pdata->init_data[i];
		else
		init_data = match_init_data(i);

		/* SW2~SW4 high bit check and modify the voltage value table */
		if (i > PFUZE100_SW1C && i < PFUZE100_SWBST) {
		regmap_read(pfuze_chip->regmap, PFUZE100_SW2VOL +
		(i - PFUZE100_SW2) * 7, &val);
		if (val & 0x40) {
		pfuze_chip->regulator_descs[i].desc.min_uV
		= 800000;
		pfuze_chip->regulator_descs[i].desc.uV_step
		= 50000;
		}
		}

		config.dev = &client->dev;
		config.init_data = init_data;
		config.driver_data = pfuze_chip;
		config.of_node = match_of_node(i);

		pfuze_chip->regulators[i] = regulator_register(&pfuze_chip
		->regulator_descs[i].desc, &config);
		if (IS_ERR(pfuze_chip->regulators[i])) {
		dev_err(&client->dev, "register regulator%s failed\n",
		pfuze100_regulators[i].desc.name);
		ret = PTR_ERR(pfuze_chip->regulators[i]);
		while (--i >= 0)
		regulator_unregister(pfuze_chip->regulators[i]);
		return ret;
		}
		}

		return 0;
		}

		static int pfuze100_regulator_remove(struct i2c_client *client)
		{
		int i;
		struct pfuze_chip *pfuze_chip = dev_get_drvdata(&client->dev);

		for (i = 0; i < PFUZE100_MAX_REGULATOR; i++)
		regulator_unregister(pfuze_chip->regulators[i]);

		return 0;
		}

		static struct i2c_driver pfuze_driver = {
		.id_table = pfuze_device_id,
		.driver = {
		.name = "pfuze100-regulator",
		.owner = THIS_MODULE,
		.of_match_table = pfuze_dt_ids,
		},
		.probe = pfuze100_regulator_probe,
		.remove = pfuze100_regulator_remove,
		};
		module_i2c_driver(pfuze_driver);

		MODULE_AUTHOR("Robin Gong <b38343@freescale.com>");
		MODULE_DESCRIPTION("Regulator Driver for Freescale PFUZE100 PMIC");
		MODULE_ALIAS("pfuze100-regulator");

include/linux/regulator/pfuze100.h

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		/*
		* Copyright (C) 2011-2013 Freescale Semiconductor, Inc. All Rights Reserved.
		*
		* 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.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*
		* You should have received a copy of the GNU General Public License along
		* with this program; if not, write to the Free Software Foundation, Inc.,
		* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
		*/
		#ifndef __LINUX_REG_PFUZE100_H
		#define __LINUX_REG_PFUZE100_H

		#define PFUZE100_SW1AB 0
		#define PFUZE100_SW1C 1
		#define PFUZE100_SW2 2
		#define PFUZE100_SW3A 3
		#define PFUZE100_SW3B 4
		#define PFUZE100_SW4 5
		#define PFUZE100_SWBST 6
		#define PFUZE100_VSNVS 7
		#define PFUZE100_VREFDDR 8
		#define PFUZE100_VGEN1 9
		#define PFUZE100_VGEN2 10
		#define PFUZE100_VGEN3 11
		#define PFUZE100_VGEN4 12
		#define PFUZE100_VGEN5 13
		#define PFUZE100_VGEN6 14
		#define PFUZE100_MAX_REGULATOR 15

		struct regulator_init_data;

		struct pfuze_regulator_platform_data {
		struct regulator_init_data *init_data[PFUZE100_MAX_REGULATOR];
		};

		#endif /* __LINUX_REG_PFUZE100_H */