// SPDX-License-Identifier: GPL-2.0-only
/*
 * Regulator driver for TI TPS65912x PMICs
 *
 * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
 *      Andrew F. Davis <afd@ti.com>
 *
 * Based on the TPS65218 driver and the previous TPS65912 driver by
 * Margarita Olaya Cabrera <magi@slimlogic.co.uk>
 */

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

#include <linux/mfd/tps65912.h>

enum tps65912_regulators { DCDC1, DCDC2, DCDC3, DCDC4, LDO1, LDO2, LDO3,
        LDO4, LDO5, LDO6, LDO7, LDO8, LDO9, LDO10 };

#define TPS65912_REGULATOR(_name, _id, _of_match, _ops, _vr, _er, _lr)  \
        [_id] = {                                                       \
                .name                   = _name,                        \
                .of_match               = _of_match,                    \
                .regulators_node        = "regulators",                 \
                .id                     = _id,                          \
                .ops                    = &_ops,                        \
                .n_voltages             = 64,                           \
                .type                   = REGULATOR_VOLTAGE,            \
                .owner                  = THIS_MODULE,                  \
                .vsel_reg               = _vr,                          \
                .vsel_mask              = 0x3f,                         \
                .enable_reg             = _er,                          \
                .enable_mask            = BIT(7),                       \
                .volt_table             = NULL,                         \
                .linear_ranges          = _lr,                          \
                .n_linear_ranges        = ARRAY_SIZE(_lr),              \
        }

static const struct linear_range tps65912_dcdc_ranges[] = {
        REGULATOR_LINEAR_RANGE(500000, 0x0, 0x3f, 50000),
};

static const struct linear_range tps65912_ldo_ranges[] = {
        REGULATOR_LINEAR_RANGE(800000, 0x0, 0x20, 25000),
        REGULATOR_LINEAR_RANGE(1650000, 0x21, 0x3c, 50000),
        REGULATOR_LINEAR_RANGE(3100000, 0x3d, 0x3f, 100000),
};

/* Operations permitted on DCDCx */
static const struct regulator_ops tps65912_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,
};

/* Operations permitted on LDOx */
static const struct regulator_ops tps65912_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_linear_range,
        .map_voltage            = regulator_map_voltage_linear_range,
};

static const struct regulator_desc regulators[] = {
        TPS65912_REGULATOR("DCDC1", DCDC1, "dcdc1", tps65912_ops_dcdc,
                           TPS65912_DCDC1_OP, TPS65912_DCDC1_CTRL,
                           tps65912_dcdc_ranges),
        TPS65912_REGULATOR("DCDC2", DCDC2, "dcdc2", tps65912_ops_dcdc,
                           TPS65912_DCDC2_OP, TPS65912_DCDC2_CTRL,
                           tps65912_dcdc_ranges),
        TPS65912_REGULATOR("DCDC3", DCDC3, "dcdc3", tps65912_ops_dcdc,
                           TPS65912_DCDC3_OP, TPS65912_DCDC3_CTRL,
                           tps65912_dcdc_ranges),
        TPS65912_REGULATOR("DCDC4", DCDC4, "dcdc4", tps65912_ops_dcdc,
                           TPS65912_DCDC4_OP, TPS65912_DCDC4_CTRL,
                           tps65912_dcdc_ranges),
        TPS65912_REGULATOR("LDO1", LDO1, "ldo1", tps65912_ops_ldo,
                           TPS65912_LDO1_OP, TPS65912_LDO1_AVS,
                           tps65912_ldo_ranges),
        TPS65912_REGULATOR("LDO2", LDO2, "ldo2", tps65912_ops_ldo,
                           TPS65912_LDO2_OP, TPS65912_LDO2_AVS,
                           tps65912_ldo_ranges),
        TPS65912_REGULATOR("LDO3", LDO3, "ldo3", tps65912_ops_ldo,
                           TPS65912_LDO3_OP, TPS65912_LDO3_AVS,
                           tps65912_ldo_ranges),
        TPS65912_REGULATOR("LDO4", LDO4, "ldo4", tps65912_ops_ldo,
                           TPS65912_LDO4_OP, TPS65912_LDO4_AVS,
                           tps65912_ldo_ranges),
        TPS65912_REGULATOR("LDO5", LDO5, "ldo5", tps65912_ops_ldo,
                           TPS65912_LDO5, TPS65912_LDO5,
                           tps65912_ldo_ranges),
        TPS65912_REGULATOR("LDO6", LDO6, "ldo6", tps65912_ops_ldo,
                           TPS65912_LDO6, TPS65912_LDO6,
                           tps65912_ldo_ranges),
        TPS65912_REGULATOR("LDO7", LDO7, "ldo7", tps65912_ops_ldo,
                           TPS65912_LDO7, TPS65912_LDO7,
                           tps65912_ldo_ranges),
        TPS65912_REGULATOR("LDO8", LDO8, "ldo8", tps65912_ops_ldo,
                           TPS65912_LDO8, TPS65912_LDO8,
                           tps65912_ldo_ranges),
        TPS65912_REGULATOR("LDO9", LDO9, "ldo9", tps65912_ops_ldo,
                           TPS65912_LDO9, TPS65912_LDO9,
                           tps65912_ldo_ranges),
        TPS65912_REGULATOR("LDO10", LDO10, "ldo10", tps65912_ops_ldo,
                           TPS65912_LDO10, TPS65912_LDO10,
                           tps65912_ldo_ranges),
};

static int tps65912_regulator_probe(struct platform_device *pdev)
{
        struct tps65912 *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.driver_data = tps;
        config.dev->of_node = tps->dev->of_node;
        config.regmap = tps->regmap;

        for (i = 0; i < ARRAY_SIZE(regulators); i++) {
                rdev = devm_regulator_register(&pdev->dev, &regulators[i],
                                               &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 tps65912_regulator_id_table[] = {
        { "tps65912-regulator", },
        { /* sentinel */ }
};
MODULE_DEVICE_TABLE(platform, tps65912_regulator_id_table);

static struct platform_driver tps65912_regulator_driver = {
        .driver = {
                .name = "tps65912-regulator",
                .probe_type = PROBE_PREFER_ASYNCHRONOUS,
        },
        .probe = tps65912_regulator_probe,
        .id_table = tps65912_regulator_id_table,
};
module_platform_driver(tps65912_regulator_driver);

MODULE_AUTHOR("Andrew F. Davis <afd@ti.com>");
MODULE_DESCRIPTION("TPS65912 voltage regulator driver");
MODULE_LICENSE("GPL v2");