1// SPDX-License-Identifier: GPL-2.0-only 2/* 3 * tps65217-regulator.c 4 * 5 * Regulator driver for TPS65217 PMIC 6 * 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