| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/ |
| * |
| * Author: Andrew F. Davis <afd@ti.com> |
| * |
| * 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 = ®_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 linear_range tps65086_10mv_ranges[] = { |
| REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0), |
| REGULATOR_LINEAR_RANGE(410000, 0x1, 0x7F, 10000), |
| }; |
| |
| static const struct 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 linear_range tps65086_buck345_25mv_ranges[] = { |
| REGULATOR_LINEAR_RANGE(0, 0x0, 0x0, 0), |
| REGULATOR_LINEAR_RANGE(425000, 0x1, 0x7F, 25000), |
| }; |
| |
| static const struct 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 linear_range tps65086_ldoa23_ranges[] = { |
| REGULATOR_LINEAR_RANGE(700000, 0x0, 0xD, 50000), |
| REGULATOR_LINEAR_RANGE(1400000, 0xE, 0xF, 100000), |
| }; |
| |
| /* Operations permitted on regulators */ |
| static const 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 const 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, ®ulators[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 <afd@ti.com>"); |
| MODULE_DESCRIPTION("TPS65086 Regulator driver"); |
| MODULE_LICENSE("GPL v2"); |
