drivers/regulator/tps65086-regulator.c - kernel/common - Git at Google

 /*
  * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
  *
  * Author: Andrew F. Davis <[email protected]>
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License version 2 as
  * published by the Free Software Foundation.
  *
  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  * kind, whether expressed or implied; without even the implied warranty
  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License version 2 for more details.
  *
  * Based on the TPS65912 driver
  */

 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/driver.h>

 #include <linux/mfd/tps65086.h>

 enum tps65086_regulators { BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6, LDOA1,
 	LDOA2, LDOA3, SWA1, SWB1, SWB2, VTT };

 #define TPS65086_REGULATOR(_name, _of, _id, _nv, _vr, _vm, _er, _em, _lr, _dr, _dm)	\
 	[_id] = {							\
 		.desc = {						\
 			.name			= _name,		\
 			.of_match		= of_match_ptr(_of),	\
 			.regulators_node	= "regulators",		\
 			.of_parse_cb		= tps65086_of_parse_cb,	\
 			.id			= _id,			\
 			.ops			= &reg_ops,		\
 			.n_voltages		= _nv,			\
 			.type			= REGULATOR_VOLTAGE,	\
 			.owner			= THIS_MODULE,		\
 			.vsel_reg		= _vr,			\
 			.vsel_mask		= _vm,			\
 			.enable_reg		= _er,			\
 			.enable_mask		= _em,			\
 			.volt_table		= NULL,			\
 			.linear_ranges		= _lr,			\
 			.n_linear_ranges	= ARRAY_SIZE(_lr),	\
 		},							\
 		.decay_reg = _dr,					\
 		.decay_mask = _dm,					\
 	}

 #define TPS65086_SWITCH(_name, _of, _id, _er, _em)			\
 	[_id] = {							\
 		.desc = {						\
 			.name			= _name,		\
 			.of_match		= of_match_ptr(_of),	\
 			.regulators_node	= "regulators",		\
 			.of_parse_cb		= tps65086_of_parse_cb,	\
 			.id			= _id,			\
 			.ops			= &switch_ops,		\
 			.type			= REGULATOR_VOLTAGE,	\
 			.owner			= THIS_MODULE,		\
 			.enable_reg		= _er,			\
 			.enable_mask		= _em,			\
 		},							\
 	}

 struct tps65086_regulator {
 	struct regulator_desc desc;
 	unsigned int decay_reg;
 	unsigned int decay_mask;
 };

 static const struct regulator_linear_range tps65086_10mv_ranges[] = {
 	REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
 	REGULATOR_LINEAR_RANGE(410000, 0x1, 0x7F, 10000),
 };

 static const struct regulator_linear_range tps65086_buck126_25mv_ranges[] = {
 	REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
 	REGULATOR_LINEAR_RANGE(1000000, 0x1, 0x18, 0),
 	REGULATOR_LINEAR_RANGE(1025000, 0x19, 0x7F, 25000),
 };

 static const struct regulator_linear_range tps65086_buck345_25mv_ranges[] = {
 	REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
 	REGULATOR_LINEAR_RANGE(425000, 0x1, 0x7F, 25000),
 };

 static const struct regulator_linear_range tps65086_ldoa1_ranges[] = {
 	REGULATOR_LINEAR_RANGE(1350000, 0x0, 0x0, 0),
 	REGULATOR_LINEAR_RANGE(1500000, 0x1, 0x7, 100000),
 	REGULATOR_LINEAR_RANGE(2300000, 0x8, 0xB, 100000),
 	REGULATOR_LINEAR_RANGE(2850000, 0xC, 0xD, 150000),
 	REGULATOR_LINEAR_RANGE(3300000, 0xE, 0xE, 0),
 };

 static const struct regulator_linear_range tps65086_ldoa23_ranges[] = {
 	REGULATOR_LINEAR_RANGE(700000, 0x0, 0xD, 50000),
 	REGULATOR_LINEAR_RANGE(1400000, 0xE, 0xF, 100000),
 };

 /* Operations permitted on regulators */
 static struct regulator_ops reg_ops = {
 	.enable			= regulator_enable_regmap,
 	.disable		= regulator_disable_regmap,
 	.is_enabled		= regulator_is_enabled_regmap,
 	.set_voltage_sel	= regulator_set_voltage_sel_regmap,
 	.map_voltage		= regulator_map_voltage_linear_range,
 	.get_voltage_sel	= regulator_get_voltage_sel_regmap,
 	.list_voltage		= regulator_list_voltage_linear_range,
 };

 /* Operations permitted on load switches */
 static struct regulator_ops switch_ops = {
 	.enable			= regulator_enable_regmap,
 	.disable		= regulator_disable_regmap,
 	.is_enabled		= regulator_is_enabled_regmap,
 };

 static int tps65086_of_parse_cb(struct device_node *dev,
 				const struct regulator_desc *desc,
 				struct regulator_config *config);

 static struct tps65086_regulator regulators[] = {
 	TPS65086_REGULATOR("BUCK1", "buck1", BUCK1, 0x80, TPS65086_BUCK1CTRL,
 			   BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(0),
 			   tps65086_10mv_ranges, TPS65086_BUCK1CTRL,
 			   BIT(0)),
 	TPS65086_REGULATOR("BUCK2", "buck2", BUCK2, 0x80, TPS65086_BUCK2CTRL,
 			   BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(1),
 			   tps65086_10mv_ranges, TPS65086_BUCK2CTRL,
 			   BIT(0)),
 	TPS65086_REGULATOR("BUCK3", "buck3", BUCK3, 0x80, TPS65086_BUCK3VID,
 			   BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(2),
 			   tps65086_10mv_ranges, TPS65086_BUCK3DECAY,
 			   BIT(0)),
 	TPS65086_REGULATOR("BUCK4", "buck4", BUCK4, 0x80, TPS65086_BUCK4VID,
 			   BUCK_VID_MASK, TPS65086_BUCK4CTRL, BIT(0),
 			   tps65086_10mv_ranges, TPS65086_BUCK4VID,
 			   BIT(0)),
 	TPS65086_REGULATOR("BUCK5", "buck5", BUCK5, 0x80, TPS65086_BUCK5VID,
 			   BUCK_VID_MASK, TPS65086_BUCK5CTRL, BIT(0),
 			   tps65086_10mv_ranges, TPS65086_BUCK5CTRL,
 			   BIT(0)),
 	TPS65086_REGULATOR("BUCK6", "buck6", BUCK6, 0x80, TPS65086_BUCK6VID,
 			   BUCK_VID_MASK, TPS65086_BUCK6CTRL, BIT(0),
 			   tps65086_10mv_ranges, TPS65086_BUCK6CTRL,
 			   BIT(0)),
 	TPS65086_REGULATOR("LDOA1", "ldoa1", LDOA1, 0xF, TPS65086_LDOA1CTRL,
 			   VDOA1_VID_MASK, TPS65086_LDOA1CTRL, BIT(0),
 			   tps65086_ldoa1_ranges, 0, 0),
 	TPS65086_REGULATOR("LDOA2", "ldoa2", LDOA2, 0x10, TPS65086_LDOA2VID,
 			   VDOA23_VID_MASK, TPS65086_LDOA2CTRL, BIT(0),
 			   tps65086_ldoa23_ranges, 0, 0),
 	TPS65086_REGULATOR("LDOA3", "ldoa3", LDOA3, 0x10, TPS65086_LDOA3VID,
 			   VDOA23_VID_MASK, TPS65086_LDOA3CTRL, BIT(0),
 			   tps65086_ldoa23_ranges, 0, 0),
 	TPS65086_SWITCH("SWA1", "swa1", SWA1, TPS65086_SWVTT_EN, BIT(5)),
 	TPS65086_SWITCH("SWB1", "swb1", SWB1, TPS65086_SWVTT_EN, BIT(6)),
 	TPS65086_SWITCH("SWB2", "swb2", SWB2, TPS65086_SWVTT_EN, BIT(7)),
 	TPS65086_SWITCH("VTT", "vtt", VTT, TPS65086_SWVTT_EN, BIT(4)),
 };

 static int tps65086_of_parse_cb(struct device_node *node,
 				const struct regulator_desc *desc,
 				struct regulator_config *config)
 {
 	int ret;

 	/* Check for 25mV step mode */
 	if (of_property_read_bool(node, "ti,regulator-step-size-25mv")) {
 		switch (desc->id) {
 		case BUCK1:
 		case BUCK2:
 		case BUCK6:
 			regulators[desc->id].desc.linear_ranges =
 				tps65086_buck126_25mv_ranges;
 			regulators[desc->id].desc.n_linear_ranges =
 				ARRAY_SIZE(tps65086_buck126_25mv_ranges);
 			break;
 		case BUCK3:
 		case BUCK4:
 		case BUCK5:
 			regulators[desc->id].desc.linear_ranges =
 				tps65086_buck345_25mv_ranges;
 			regulators[desc->id].desc.n_linear_ranges =
 				ARRAY_SIZE(tps65086_buck345_25mv_ranges);
 			break;
 		default:
 			dev_warn(config->dev, "25mV step mode only valid for BUCK regulators\n");
 		}
 	}

 	/* Check for decay mode */
 	if (desc->id <= BUCK6 && of_property_read_bool(node, "ti,regulator-decay")) {
 		ret = regmap_write_bits(config->regmap,
 					regulators[desc->id].decay_reg,
 					regulators[desc->id].decay_mask,
 					regulators[desc->id].decay_mask);
 		if (ret) {
 			dev_err(config->dev, "Error setting decay\n");
 			return ret;
 		}
 	}

 	return 0;
 }

 static int tps65086_regulator_probe(struct platform_device *pdev)
 {
 	struct tps65086 *tps = dev_get_drvdata(pdev->dev.parent);
 	struct regulator_config config = { };
 	struct regulator_dev *rdev;
 	int i;

 	platform_set_drvdata(pdev, tps);

 	config.dev = &pdev->dev;
 	config.dev->of_node = tps->dev->of_node;
 	config.driver_data = tps;
 	config.regmap = tps->regmap;

 	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
 		rdev = devm_regulator_register(&pdev->dev, &regulators[i].desc,
 					       &config);
 		if (IS_ERR(rdev)) {
 			dev_err(tps->dev, "failed to register %s regulator\n",
 				pdev->name);
 			return PTR_ERR(rdev);
 		}
 	}

 	return 0;
 }

 static const struct platform_device_id tps65086_regulator_id_table[] = {
 	{ "tps65086-regulator", },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(platform, tps65086_regulator_id_table);

 static struct platform_driver tps65086_regulator_driver = {
 	.driver = {
 		.name = "tps65086-regulator",
 	},
 	.probe = tps65086_regulator_probe,
 	.id_table = tps65086_regulator_id_table,
 };
 module_platform_driver(tps65086_regulator_driver);

 MODULE_AUTHOR("Andrew F. Davis <[email protected]>");
 MODULE_DESCRIPTION("TPS65086 Regulator driver");
 MODULE_LICENSE("GPL v2");
	/*
	* Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
	*
	* Author: Andrew F. Davis <[email protected]>
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of the GNU General Public License version 2 as
	* published by the Free Software Foundation.
	*
	* This program is distributed "as is" WITHOUT ANY WARRANTY of any
	* kind, whether expressed or implied; without even the implied warranty
	* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License version 2 for more details.
	*
	* Based on the TPS65912 driver
	*/

	#include <linux/module.h>
	#include <linux/of.h>
	#include <linux/platform_device.h>
	#include <linux/regulator/driver.h>

	#include <linux/mfd/tps65086.h>

	enum tps65086_regulators { BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6, LDOA1,
	LDOA2, LDOA3, SWA1, SWB1, SWB2, VTT };

	#define TPS65086_REGULATOR(_name, _of, _id, _nv, _vr, _vm, _er, _em, _lr, _dr, _dm) \
	[_id] = { \
	.desc = { \
	.name = _name, \
	.of_match = of_match_ptr(_of), \
	.regulators_node = "regulators", \
	.of_parse_cb = tps65086_of_parse_cb, \
	.id = _id, \
	.ops = &reg_ops, \
	.n_voltages = _nv, \
	.type = REGULATOR_VOLTAGE, \
	.owner = THIS_MODULE, \
	.vsel_reg = _vr, \
	.vsel_mask = _vm, \
	.enable_reg = _er, \
	.enable_mask = _em, \
	.volt_table = NULL, \
	.linear_ranges = _lr, \
	.n_linear_ranges = ARRAY_SIZE(_lr), \
	}, \
	.decay_reg = _dr, \
	.decay_mask = _dm, \
	}

	#define TPS65086_SWITCH(_name, _of, _id, _er, _em) \
	[_id] = { \
	.desc = { \
	.name = _name, \
	.of_match = of_match_ptr(_of), \
	.regulators_node = "regulators", \
	.of_parse_cb = tps65086_of_parse_cb, \
	.id = _id, \
	.ops = &switch_ops, \
	.type = REGULATOR_VOLTAGE, \
	.owner = THIS_MODULE, \
	.enable_reg = _er, \
	.enable_mask = _em, \
	}, \
	}

	struct tps65086_regulator {
	struct regulator_desc desc;
	unsigned int decay_reg;
	unsigned int decay_mask;
	};

	static const struct regulator_linear_range tps65086_10mv_ranges[] = {
	REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
	REGULATOR_LINEAR_RANGE(410000, 0x1, 0x7F, 10000),
	};

	static const struct regulator_linear_range tps65086_buck126_25mv_ranges[] = {
	REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
	REGULATOR_LINEAR_RANGE(1000000, 0x1, 0x18, 0),
	REGULATOR_LINEAR_RANGE(1025000, 0x19, 0x7F, 25000),
	};

	static const struct regulator_linear_range tps65086_buck345_25mv_ranges[] = {
	REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0),
	REGULATOR_LINEAR_RANGE(425000, 0x1, 0x7F, 25000),
	};

	static const struct regulator_linear_range tps65086_ldoa1_ranges[] = {
	REGULATOR_LINEAR_RANGE(1350000, 0x0, 0x0, 0),
	REGULATOR_LINEAR_RANGE(1500000, 0x1, 0x7, 100000),
	REGULATOR_LINEAR_RANGE(2300000, 0x8, 0xB, 100000),
	REGULATOR_LINEAR_RANGE(2850000, 0xC, 0xD, 150000),
	REGULATOR_LINEAR_RANGE(3300000, 0xE, 0xE, 0),
	};

	static const struct regulator_linear_range tps65086_ldoa23_ranges[] = {
	REGULATOR_LINEAR_RANGE(700000, 0x0, 0xD, 50000),
	REGULATOR_LINEAR_RANGE(1400000, 0xE, 0xF, 100000),
	};

	/* Operations permitted on regulators */
	static struct regulator_ops reg_ops = {
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.is_enabled = regulator_is_enabled_regmap,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.map_voltage = regulator_map_voltage_linear_range,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.list_voltage = regulator_list_voltage_linear_range,
	};

	/* Operations permitted on load switches */
	static struct regulator_ops switch_ops = {
	.enable = regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.is_enabled = regulator_is_enabled_regmap,
	};

	static int tps65086_of_parse_cb(struct device_node *dev,
	const struct regulator_desc *desc,
	struct regulator_config *config);

	static struct tps65086_regulator regulators[] = {
	TPS65086_REGULATOR("BUCK1", "buck1", BUCK1, 0x80, TPS65086_BUCK1CTRL,
	BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(0),
	tps65086_10mv_ranges, TPS65086_BUCK1CTRL,
	BIT(0)),
	TPS65086_REGULATOR("BUCK2", "buck2", BUCK2, 0x80, TPS65086_BUCK2CTRL,
	BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(1),
	tps65086_10mv_ranges, TPS65086_BUCK2CTRL,
	BIT(0)),
	TPS65086_REGULATOR("BUCK3", "buck3", BUCK3, 0x80, TPS65086_BUCK3VID,
	BUCK_VID_MASK, TPS65086_BUCK123CTRL, BIT(2),
	tps65086_10mv_ranges, TPS65086_BUCK3DECAY,
	BIT(0)),
	TPS65086_REGULATOR("BUCK4", "buck4", BUCK4, 0x80, TPS65086_BUCK4VID,
	BUCK_VID_MASK, TPS65086_BUCK4CTRL, BIT(0),
	tps65086_10mv_ranges, TPS65086_BUCK4VID,
	BIT(0)),
	TPS65086_REGULATOR("BUCK5", "buck5", BUCK5, 0x80, TPS65086_BUCK5VID,
	BUCK_VID_MASK, TPS65086_BUCK5CTRL, BIT(0),
	tps65086_10mv_ranges, TPS65086_BUCK5CTRL,
	BIT(0)),
	TPS65086_REGULATOR("BUCK6", "buck6", BUCK6, 0x80, TPS65086_BUCK6VID,
	BUCK_VID_MASK, TPS65086_BUCK6CTRL, BIT(0),
	tps65086_10mv_ranges, TPS65086_BUCK6CTRL,
	BIT(0)),
	TPS65086_REGULATOR("LDOA1", "ldoa1", LDOA1, 0xF, TPS65086_LDOA1CTRL,
	VDOA1_VID_MASK, TPS65086_LDOA1CTRL, BIT(0),
	tps65086_ldoa1_ranges, 0, 0),
	TPS65086_REGULATOR("LDOA2", "ldoa2", LDOA2, 0x10, TPS65086_LDOA2VID,
	VDOA23_VID_MASK, TPS65086_LDOA2CTRL, BIT(0),
	tps65086_ldoa23_ranges, 0, 0),
	TPS65086_REGULATOR("LDOA3", "ldoa3", LDOA3, 0x10, TPS65086_LDOA3VID,
	VDOA23_VID_MASK, TPS65086_LDOA3CTRL, BIT(0),
	tps65086_ldoa23_ranges, 0, 0),
	TPS65086_SWITCH("SWA1", "swa1", SWA1, TPS65086_SWVTT_EN, BIT(5)),
	TPS65086_SWITCH("SWB1", "swb1", SWB1, TPS65086_SWVTT_EN, BIT(6)),
	TPS65086_SWITCH("SWB2", "swb2", SWB2, TPS65086_SWVTT_EN, BIT(7)),
	TPS65086_SWITCH("VTT", "vtt", VTT, TPS65086_SWVTT_EN, BIT(4)),
	};

	static int tps65086_of_parse_cb(struct device_node *node,
	const struct regulator_desc *desc,
	struct regulator_config *config)
	{
	int ret;

	/* Check for 25mV step mode */
	if (of_property_read_bool(node, "ti,regulator-step-size-25mv")) {
	switch (desc->id) {
	case BUCK1:
	case BUCK2:
	case BUCK6:
	regulators[desc->id].desc.linear_ranges =
	tps65086_buck126_25mv_ranges;
	regulators[desc->id].desc.n_linear_ranges =
	ARRAY_SIZE(tps65086_buck126_25mv_ranges);
	break;
	case BUCK3:
	case BUCK4:
	case BUCK5:
	regulators[desc->id].desc.linear_ranges =
	tps65086_buck345_25mv_ranges;
	regulators[desc->id].desc.n_linear_ranges =
	ARRAY_SIZE(tps65086_buck345_25mv_ranges);
	break;
	default:
	dev_warn(config->dev, "25mV step mode only valid for BUCK regulators\n");
	}
	}

	/* Check for decay mode */
	if (desc->id <= BUCK6 && of_property_read_bool(node, "ti,regulator-decay")) {
	ret = regmap_write_bits(config->regmap,
	regulators[desc->id].decay_reg,
	regulators[desc->id].decay_mask,
	regulators[desc->id].decay_mask);
	if (ret) {
	dev_err(config->dev, "Error setting decay\n");
	return ret;
	}
	}

	return 0;
	}

	static int tps65086_regulator_probe(struct platform_device *pdev)
	{
	struct tps65086 *tps = dev_get_drvdata(pdev->dev.parent);
	struct regulator_config config = { };
	struct regulator_dev *rdev;
	int i;

	platform_set_drvdata(pdev, tps);

	config.dev = &pdev->dev;
	config.dev->of_node = tps->dev->of_node;
	config.driver_data = tps;
	config.regmap = tps->regmap;

	for (i = 0; i < ARRAY_SIZE(regulators); i++) {
	rdev = devm_regulator_register(&pdev->dev, &regulators[i].desc,
	&config);
	if (IS_ERR(rdev)) {
	dev_err(tps->dev, "failed to register %s regulator\n",
	pdev->name);
	return PTR_ERR(rdev);
	}
	}

	return 0;
	}

	static const struct platform_device_id tps65086_regulator_id_table[] = {
	{ "tps65086-regulator", },
	{ /* sentinel */ }
	};
	MODULE_DEVICE_TABLE(platform, tps65086_regulator_id_table);

	static struct platform_driver tps65086_regulator_driver = {
	.driver = {
	.name = "tps65086-regulator",
	},
	.probe = tps65086_regulator_probe,
	.id_table = tps65086_regulator_id_table,
	};
	module_platform_driver(tps65086_regulator_driver);

	MODULE_AUTHOR("Andrew F. Davis <[email protected]>");
	MODULE_DESCRIPTION("TPS65086 Regulator driver");
	MODULE_LICENSE("GPL v2");