282 lines · c
1// SPDX-License-Identifier: GPL-2.0-only2/*3 * tps65217-regulator.c4 *5 * Regulator driver for TPS65217 PMIC6 *7 * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/8 */9 10#include <linux/kernel.h>11#include <linux/module.h>12#include <linux/device.h>13#include <linux/init.h>14#include <linux/err.h>15#include <linux/platform_device.h>16 17#include <linux/regulator/of_regulator.h>18#include <linux/regulator/driver.h>19#include <linux/regulator/machine.h>20#include <linux/mfd/tps65217.h>21 22#define TPS65217_REGULATOR(_name, _id, _of_match, _ops, _n, _vr, _vm, _em, \23 _t, _lr, _nlr, _sr, _sm) \24 { \25 .name = _name, \26 .id = _id, \27 .of_match = of_match_ptr(_of_match), \28 .regulators_node= of_match_ptr("regulators"), \29 .ops = &_ops, \30 .n_voltages = _n, \31 .type = REGULATOR_VOLTAGE, \32 .owner = THIS_MODULE, \33 .vsel_reg = _vr, \34 .vsel_mask = _vm, \35 .enable_reg = TPS65217_REG_ENABLE, \36 .enable_mask = _em, \37 .volt_table = _t, \38 .linear_ranges = _lr, \39 .n_linear_ranges = _nlr, \40 .bypass_reg = _sr, \41 .bypass_mask = _sm, \42 } \43 44static const unsigned int LDO1_VSEL_table[] = {45 1000000, 1100000, 1200000, 1250000,46 1300000, 1350000, 1400000, 1500000,47 1600000, 1800000, 2500000, 2750000,48 2800000, 3000000, 3100000, 3300000,49};50 51static const struct linear_range tps65217_uv1_ranges[] = {52 REGULATOR_LINEAR_RANGE(900000, 0, 24, 25000),53 REGULATOR_LINEAR_RANGE(1550000, 25, 52, 50000),54 REGULATOR_LINEAR_RANGE(3000000, 53, 55, 100000),55 REGULATOR_LINEAR_RANGE(3300000, 56, 63, 0),56};57 58static const struct linear_range tps65217_uv2_ranges[] = {59 REGULATOR_LINEAR_RANGE(1500000, 0, 8, 50000),60 REGULATOR_LINEAR_RANGE(2000000, 9, 13, 100000),61 REGULATOR_LINEAR_RANGE(2450000, 14, 31, 50000),62};63 64static int tps65217_pmic_enable(struct regulator_dev *dev)65{66 struct tps65217 *tps = rdev_get_drvdata(dev);67 int rid = rdev_get_id(dev);68 69 if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4)70 return -EINVAL;71 72 /* Enable the regulator and password protection is level 1 */73 return tps65217_set_bits(tps, TPS65217_REG_ENABLE,74 dev->desc->enable_mask, dev->desc->enable_mask,75 TPS65217_PROTECT_L1);76}77 78static int tps65217_pmic_disable(struct regulator_dev *dev)79{80 struct tps65217 *tps = rdev_get_drvdata(dev);81 int rid = rdev_get_id(dev);82 83 if (rid < TPS65217_DCDC_1 || rid > TPS65217_LDO_4)84 return -EINVAL;85 86 /* Disable the regulator and password protection is level 1 */87 return tps65217_clear_bits(tps, TPS65217_REG_ENABLE,88 dev->desc->enable_mask, TPS65217_PROTECT_L1);89}90 91static int tps65217_pmic_set_voltage_sel(struct regulator_dev *dev,92 unsigned selector)93{94 int ret;95 struct tps65217 *tps = rdev_get_drvdata(dev);96 unsigned int rid = rdev_get_id(dev);97 98 /* Set the voltage based on vsel value and write protect level is 2 */99 ret = tps65217_set_bits(tps, dev->desc->vsel_reg, dev->desc->vsel_mask,100 selector, TPS65217_PROTECT_L2);101 102 /* Set GO bit for DCDCx to initiate voltage transistion */103 switch (rid) {104 case TPS65217_DCDC_1 ... TPS65217_DCDC_3:105 ret = tps65217_set_bits(tps, TPS65217_REG_DEFSLEW,106 TPS65217_DEFSLEW_GO, TPS65217_DEFSLEW_GO,107 TPS65217_PROTECT_L2);108 break;109 }110 111 return ret;112}113 114static int tps65217_pmic_set_suspend_enable(struct regulator_dev *dev)115{116 struct tps65217 *tps = rdev_get_drvdata(dev);117 unsigned int rid = rdev_get_id(dev);118 119 if (rid > TPS65217_LDO_4)120 return -EINVAL;121 122 return tps65217_clear_bits(tps, dev->desc->bypass_reg,123 dev->desc->bypass_mask,124 TPS65217_PROTECT_L1);125}126 127static int tps65217_pmic_set_suspend_disable(struct regulator_dev *dev)128{129 struct tps65217 *tps = rdev_get_drvdata(dev);130 unsigned int rid = rdev_get_id(dev);131 132 if (rid > TPS65217_LDO_4)133 return -EINVAL;134 135 if (!tps->strobes[rid])136 return -EINVAL;137 138 return tps65217_set_bits(tps, dev->desc->bypass_reg,139 dev->desc->bypass_mask,140 tps->strobes[rid], TPS65217_PROTECT_L1);141}142 143/* Operations permitted on DCDCx, LDO2, LDO3 and LDO4 */144static const struct regulator_ops tps65217_pmic_ops = {145 .is_enabled = regulator_is_enabled_regmap,146 .enable = tps65217_pmic_enable,147 .disable = tps65217_pmic_disable,148 .get_voltage_sel = regulator_get_voltage_sel_regmap,149 .set_voltage_sel = tps65217_pmic_set_voltage_sel,150 .list_voltage = regulator_list_voltage_linear_range,151 .map_voltage = regulator_map_voltage_linear_range,152 .set_suspend_enable = tps65217_pmic_set_suspend_enable,153 .set_suspend_disable = tps65217_pmic_set_suspend_disable,154};155 156/* Operations permitted on LDO1 */157static const struct regulator_ops tps65217_pmic_ldo1_ops = {158 .is_enabled = regulator_is_enabled_regmap,159 .enable = tps65217_pmic_enable,160 .disable = tps65217_pmic_disable,161 .get_voltage_sel = regulator_get_voltage_sel_regmap,162 .set_voltage_sel = tps65217_pmic_set_voltage_sel,163 .list_voltage = regulator_list_voltage_table,164 .map_voltage = regulator_map_voltage_ascend,165 .set_suspend_enable = tps65217_pmic_set_suspend_enable,166 .set_suspend_disable = tps65217_pmic_set_suspend_disable,167};168 169static const struct regulator_desc regulators[] = {170 TPS65217_REGULATOR("DCDC1", TPS65217_DCDC_1, "dcdc1",171 tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC1,172 TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC1_EN,173 NULL, tps65217_uv1_ranges,174 ARRAY_SIZE(tps65217_uv1_ranges), TPS65217_REG_SEQ1,175 TPS65217_SEQ1_DC1_SEQ_MASK),176 TPS65217_REGULATOR("DCDC2", TPS65217_DCDC_2, "dcdc2",177 tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC2,178 TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC2_EN,179 NULL, tps65217_uv1_ranges,180 ARRAY_SIZE(tps65217_uv1_ranges), TPS65217_REG_SEQ1,181 TPS65217_SEQ1_DC2_SEQ_MASK),182 TPS65217_REGULATOR("DCDC3", TPS65217_DCDC_3, "dcdc3",183 tps65217_pmic_ops, 64, TPS65217_REG_DEFDCDC3,184 TPS65217_DEFDCDCX_DCDC_MASK, TPS65217_ENABLE_DC3_EN,185 NULL, tps65217_uv1_ranges,186 ARRAY_SIZE(tps65217_uv1_ranges), TPS65217_REG_SEQ2,187 TPS65217_SEQ2_DC3_SEQ_MASK),188 TPS65217_REGULATOR("LDO1", TPS65217_LDO_1, "ldo1",189 tps65217_pmic_ldo1_ops, 16, TPS65217_REG_DEFLDO1,190 TPS65217_DEFLDO1_LDO1_MASK, TPS65217_ENABLE_LDO1_EN,191 LDO1_VSEL_table, NULL, 0, TPS65217_REG_SEQ2,192 TPS65217_SEQ2_LDO1_SEQ_MASK),193 TPS65217_REGULATOR("LDO2", TPS65217_LDO_2, "ldo2", tps65217_pmic_ops,194 64, TPS65217_REG_DEFLDO2,195 TPS65217_DEFLDO2_LDO2_MASK, TPS65217_ENABLE_LDO2_EN,196 NULL, tps65217_uv1_ranges,197 ARRAY_SIZE(tps65217_uv1_ranges), TPS65217_REG_SEQ3,198 TPS65217_SEQ3_LDO2_SEQ_MASK),199 TPS65217_REGULATOR("LDO3", TPS65217_LDO_3, "ldo3", tps65217_pmic_ops,200 32, TPS65217_REG_DEFLS1, TPS65217_DEFLDO3_LDO3_MASK,201 TPS65217_ENABLE_LS1_EN | TPS65217_DEFLDO3_LDO3_EN,202 NULL, tps65217_uv2_ranges,203 ARRAY_SIZE(tps65217_uv2_ranges), TPS65217_REG_SEQ3,204 TPS65217_SEQ3_LDO3_SEQ_MASK),205 TPS65217_REGULATOR("LDO4", TPS65217_LDO_4, "ldo4", tps65217_pmic_ops,206 32, TPS65217_REG_DEFLS2, TPS65217_DEFLDO4_LDO4_MASK,207 TPS65217_ENABLE_LS2_EN | TPS65217_DEFLDO4_LDO4_EN,208 NULL, tps65217_uv2_ranges,209 ARRAY_SIZE(tps65217_uv2_ranges), TPS65217_REG_SEQ4,210 TPS65217_SEQ4_LDO4_SEQ_MASK),211};212 213static int tps65217_regulator_probe(struct platform_device *pdev)214{215 struct tps65217 *tps = dev_get_drvdata(pdev->dev.parent);216 struct tps65217_board *pdata = dev_get_platdata(tps->dev);217 struct regulator_dev *rdev;218 struct regulator_config config = { };219 int i, ret;220 unsigned int val;221 222 /* Allocate memory for strobes */223 tps->strobes = devm_kcalloc(&pdev->dev,224 TPS65217_NUM_REGULATOR, sizeof(u8),225 GFP_KERNEL);226 if (!tps->strobes)227 return -ENOMEM;228 229 platform_set_drvdata(pdev, tps);230 231 for (i = 0; i < TPS65217_NUM_REGULATOR; i++) {232 /* Register the regulators */233 config.dev = tps->dev;234 if (pdata)235 config.init_data = pdata->tps65217_init_data[i];236 config.driver_data = tps;237 config.regmap = tps->regmap;238 239 rdev = devm_regulator_register(&pdev->dev, ®ulators[i],240 &config);241 if (IS_ERR(rdev)) {242 dev_err(tps->dev, "failed to register %s regulator\n",243 pdev->name);244 return PTR_ERR(rdev);245 }246 247 /* Store default strobe info */248 ret = tps65217_reg_read(tps, regulators[i].bypass_reg, &val);249 if (ret)250 return ret;251 252 tps->strobes[i] = val & regulators[i].bypass_mask;253 }254 255 return 0;256}257 258static struct platform_driver tps65217_regulator_driver = {259 .driver = {260 .name = "tps65217-pmic",261 .probe_type = PROBE_PREFER_ASYNCHRONOUS,262 },263 .probe = tps65217_regulator_probe,264};265 266static int __init tps65217_regulator_init(void)267{268 return platform_driver_register(&tps65217_regulator_driver);269}270subsys_initcall(tps65217_regulator_init);271 272static void __exit tps65217_regulator_exit(void)273{274 platform_driver_unregister(&tps65217_regulator_driver);275}276module_exit(tps65217_regulator_exit);277 278MODULE_AUTHOR("AnilKumar Ch <anilkumar@ti.com>");279MODULE_DESCRIPTION("TPS65217 voltage regulator driver");280MODULE_ALIAS("platform:tps65217-pmic");281MODULE_LICENSE("GPL v2");282