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1// SPDX-License-Identifier: GPL-2.02//3// tps65219-regulator.c4//5// Regulator driver for TPS65219 PMIC6//7// Copyright (C) 2022 BayLibre Incorporated - https://www.baylibre.com/8//9// This implementation derived from tps65218 authored by10// "J Keerthy <j-keerthy@ti.com>"11//12 13#include <linux/kernel.h>14#include <linux/module.h>15#include <linux/device.h>16#include <linux/init.h>17#include <linux/err.h>18#include <linux/of.h>19#include <linux/platform_device.h>20#include <linux/regmap.h>21#include <linux/regulator/of_regulator.h>22#include <linux/regulator/driver.h>23#include <linux/regulator/machine.h>24#include <linux/mfd/tps65219.h>25 26struct tps65219_regulator_irq_type {27 const char *irq_name;28 const char *regulator_name;29 const char *event_name;30 unsigned long event;31};32 33static struct tps65219_regulator_irq_type tps65219_regulator_irq_types[] = {34 { "LDO3_SCG", "LDO3", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },35 { "LDO3_OC", "LDO3", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },36 { "LDO3_UV", "LDO3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },37 { "LDO4_SCG", "LDO4", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },38 { "LDO4_OC", "LDO4", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },39 { "LDO4_UV", "LDO4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },40 { "LDO1_SCG", "LDO1", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },41 { "LDO1_OC", "LDO1", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },42 { "LDO1_UV", "LDO1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },43 { "LDO2_SCG", "LDO2", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },44 { "LDO2_OC", "LDO2", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },45 { "LDO2_UV", "LDO2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },46 { "BUCK3_SCG", "BUCK3", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },47 { "BUCK3_OC", "BUCK3", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },48 { "BUCK3_NEG_OC", "BUCK3", "negative overcurrent", REGULATOR_EVENT_OVER_CURRENT },49 { "BUCK3_UV", "BUCK3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },50 { "BUCK1_SCG", "BUCK1", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },51 { "BUCK1_OC", "BUCK1", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },52 { "BUCK1_NEG_OC", "BUCK1", "negative overcurrent", REGULATOR_EVENT_OVER_CURRENT },53 { "BUCK1_UV", "BUCK1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },54 { "BUCK2_SCG", "BUCK2", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT },55 { "BUCK2_OC", "BUCK2", "overcurrent", REGULATOR_EVENT_OVER_CURRENT },56 { "BUCK2_NEG_OC", "BUCK2", "negative overcurrent", REGULATOR_EVENT_OVER_CURRENT },57 { "BUCK2_UV", "BUCK2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE },58 { "BUCK1_RV", "BUCK1", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },59 { "BUCK2_RV", "BUCK2", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },60 { "BUCK3_RV", "BUCK3", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },61 { "LDO1_RV", "LDO1", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },62 { "LDO2_RV", "LDO2", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },63 { "LDO3_RV", "LDO3", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },64 { "LDO4_RV", "LDO4", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN },65 { "BUCK1_RV_SD", "BUCK1", "residual voltage on shutdown",66 REGULATOR_EVENT_OVER_VOLTAGE_WARN },67 { "BUCK2_RV_SD", "BUCK2", "residual voltage on shutdown",68 REGULATOR_EVENT_OVER_VOLTAGE_WARN },69 { "BUCK3_RV_SD", "BUCK3", "residual voltage on shutdown",70 REGULATOR_EVENT_OVER_VOLTAGE_WARN },71 { "LDO1_RV_SD", "LDO1", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },72 { "LDO2_RV_SD", "LDO2", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },73 { "LDO3_RV_SD", "LDO3", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },74 { "LDO4_RV_SD", "LDO4", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN },75 { "SENSOR_3_WARM", "SENSOR3", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN},76 { "SENSOR_2_WARM", "SENSOR2", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN },77 { "SENSOR_1_WARM", "SENSOR1", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN },78 { "SENSOR_0_WARM", "SENSOR0", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN },79 { "SENSOR_3_HOT", "SENSOR3", "hot temperature", REGULATOR_EVENT_OVER_TEMP},80 { "SENSOR_2_HOT", "SENSOR2", "hot temperature", REGULATOR_EVENT_OVER_TEMP },81 { "SENSOR_1_HOT", "SENSOR1", "hot temperature", REGULATOR_EVENT_OVER_TEMP },82 { "SENSOR_0_HOT", "SENSOR0", "hot temperature", REGULATOR_EVENT_OVER_TEMP },83 { "TIMEOUT", "", "", REGULATOR_EVENT_ABORT_VOLTAGE_CHANGE },84};85 86struct tps65219_regulator_irq_data {87 struct device *dev;88 struct tps65219_regulator_irq_type *type;89 struct regulator_dev *rdev;90};91 92#define TPS65219_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \93 _em, _cr, _cm, _lr, _nlr, _delay, _fuv, \94 _ct, _ncl, _bpm) \95 { \96 .name = _name, \97 .of_match = _of, \98 .regulators_node = of_match_ptr("regulators"), \99 .supply_name = _of, \100 .id = _id, \101 .ops = &(_ops), \102 .n_voltages = _n, \103 .type = _type, \104 .owner = THIS_MODULE, \105 .vsel_reg = _vr, \106 .vsel_mask = _vm, \107 .csel_reg = _cr, \108 .csel_mask = _cm, \109 .curr_table = _ct, \110 .n_current_limits = _ncl, \111 .enable_reg = _er, \112 .enable_mask = _em, \113 .volt_table = NULL, \114 .linear_ranges = _lr, \115 .n_linear_ranges = _nlr, \116 .ramp_delay = _delay, \117 .fixed_uV = _fuv, \118 .bypass_reg = _vr, \119 .bypass_mask = _bpm, \120 } \121 122static const struct linear_range bucks_ranges[] = {123 REGULATOR_LINEAR_RANGE(600000, 0x0, 0x1f, 25000),124 REGULATOR_LINEAR_RANGE(1400000, 0x20, 0x33, 100000),125 REGULATOR_LINEAR_RANGE(3400000, 0x34, 0x3f, 0),126};127 128static const struct linear_range ldos_1_2_ranges[] = {129 REGULATOR_LINEAR_RANGE(600000, 0x0, 0x37, 50000),130 REGULATOR_LINEAR_RANGE(3400000, 0x38, 0x3f, 0),131};132 133static const struct linear_range ldos_3_4_ranges[] = {134 REGULATOR_LINEAR_RANGE(1200000, 0x0, 0xC, 0),135 REGULATOR_LINEAR_RANGE(1250000, 0xD, 0x35, 50000),136 REGULATOR_LINEAR_RANGE(3300000, 0x36, 0x3F, 0),137};138 139static int tps65219_set_mode(struct regulator_dev *dev, unsigned int mode)140{141 struct tps65219 *tps = rdev_get_drvdata(dev);142 143 switch (mode) {144 case REGULATOR_MODE_NORMAL:145 return regmap_set_bits(tps->regmap, TPS65219_REG_STBY_1_CONFIG,146 dev->desc->enable_mask);147 148 case REGULATOR_MODE_STANDBY:149 return regmap_clear_bits(tps->regmap,150 TPS65219_REG_STBY_1_CONFIG,151 dev->desc->enable_mask);152 default:153 return -EINVAL;154 }155}156 157static unsigned int tps65219_get_mode(struct regulator_dev *dev)158{159 struct tps65219 *tps = rdev_get_drvdata(dev);160 unsigned int rid = rdev_get_id(dev);161 int ret, value = 0;162 163 ret = regmap_read(tps->regmap, TPS65219_REG_STBY_1_CONFIG, &value);164 if (ret) {165 dev_dbg(tps->dev, "%s failed for regulator %s: %d ",166 __func__, dev->desc->name, ret);167 return ret;168 }169 value = (value & BIT(rid)) >> rid;170 if (value)171 return REGULATOR_MODE_STANDBY;172 else173 return REGULATOR_MODE_NORMAL;174}175 176/* Operations permitted on BUCK1/2/3 */177static const struct regulator_ops tps65219_bucks_ops = {178 .is_enabled = regulator_is_enabled_regmap,179 .enable = regulator_enable_regmap,180 .disable = regulator_disable_regmap,181 .set_mode = tps65219_set_mode,182 .get_mode = tps65219_get_mode,183 .get_voltage_sel = regulator_get_voltage_sel_regmap,184 .set_voltage_sel = regulator_set_voltage_sel_regmap,185 .list_voltage = regulator_list_voltage_linear_range,186 .map_voltage = regulator_map_voltage_linear_range,187 .set_voltage_time_sel = regulator_set_voltage_time_sel,188 189};190 191/* Operations permitted on LDO1/2 */192static const struct regulator_ops tps65219_ldos_1_2_ops = {193 .is_enabled = regulator_is_enabled_regmap,194 .enable = regulator_enable_regmap,195 .disable = regulator_disable_regmap,196 .set_mode = tps65219_set_mode,197 .get_mode = tps65219_get_mode,198 .get_voltage_sel = regulator_get_voltage_sel_regmap,199 .set_voltage_sel = regulator_set_voltage_sel_regmap,200 .list_voltage = regulator_list_voltage_linear_range,201 .map_voltage = regulator_map_voltage_linear_range,202 .set_bypass = regulator_set_bypass_regmap,203 .get_bypass = regulator_get_bypass_regmap,204};205 206/* Operations permitted on LDO3/4 */207static const struct regulator_ops tps65219_ldos_3_4_ops = {208 .is_enabled = regulator_is_enabled_regmap,209 .enable = regulator_enable_regmap,210 .disable = regulator_disable_regmap,211 .set_mode = tps65219_set_mode,212 .get_mode = tps65219_get_mode,213 .get_voltage_sel = regulator_get_voltage_sel_regmap,214 .set_voltage_sel = regulator_set_voltage_sel_regmap,215 .list_voltage = regulator_list_voltage_linear_range,216 .map_voltage = regulator_map_voltage_linear_range,217};218 219static const struct regulator_desc regulators[] = {220 TPS65219_REGULATOR("BUCK1", "buck1", TPS65219_BUCK_1,221 REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,222 TPS65219_REG_BUCK1_VOUT,223 TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,224 TPS65219_REG_ENABLE_CTRL,225 TPS65219_ENABLE_BUCK1_EN_MASK, 0, 0, bucks_ranges,226 3, 4000, 0, NULL, 0, 0),227 TPS65219_REGULATOR("BUCK2", "buck2", TPS65219_BUCK_2,228 REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,229 TPS65219_REG_BUCK2_VOUT,230 TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,231 TPS65219_REG_ENABLE_CTRL,232 TPS65219_ENABLE_BUCK2_EN_MASK, 0, 0, bucks_ranges,233 3, 4000, 0, NULL, 0, 0),234 TPS65219_REGULATOR("BUCK3", "buck3", TPS65219_BUCK_3,235 REGULATOR_VOLTAGE, tps65219_bucks_ops, 64,236 TPS65219_REG_BUCK3_VOUT,237 TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,238 TPS65219_REG_ENABLE_CTRL,239 TPS65219_ENABLE_BUCK3_EN_MASK, 0, 0, bucks_ranges,240 3, 0, 0, NULL, 0, 0),241 TPS65219_REGULATOR("LDO1", "ldo1", TPS65219_LDO_1,242 REGULATOR_VOLTAGE, tps65219_ldos_1_2_ops, 64,243 TPS65219_REG_LDO1_VOUT,244 TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,245 TPS65219_REG_ENABLE_CTRL,246 TPS65219_ENABLE_LDO1_EN_MASK, 0, 0, ldos_1_2_ranges,247 2, 0, 0, NULL, 0, TPS65219_LDOS_BYP_CONFIG_MASK),248 TPS65219_REGULATOR("LDO2", "ldo2", TPS65219_LDO_2,249 REGULATOR_VOLTAGE, tps65219_ldos_1_2_ops, 64,250 TPS65219_REG_LDO2_VOUT,251 TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,252 TPS65219_REG_ENABLE_CTRL,253 TPS65219_ENABLE_LDO2_EN_MASK, 0, 0, ldos_1_2_ranges,254 2, 0, 0, NULL, 0, TPS65219_LDOS_BYP_CONFIG_MASK),255 TPS65219_REGULATOR("LDO3", "ldo3", TPS65219_LDO_3,256 REGULATOR_VOLTAGE, tps65219_ldos_3_4_ops, 64,257 TPS65219_REG_LDO3_VOUT,258 TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,259 TPS65219_REG_ENABLE_CTRL,260 TPS65219_ENABLE_LDO3_EN_MASK, 0, 0, ldos_3_4_ranges,261 3, 0, 0, NULL, 0, 0),262 TPS65219_REGULATOR("LDO4", "ldo4", TPS65219_LDO_4,263 REGULATOR_VOLTAGE, tps65219_ldos_3_4_ops, 64,264 TPS65219_REG_LDO4_VOUT,265 TPS65219_BUCKS_LDOS_VOUT_VSET_MASK,266 TPS65219_REG_ENABLE_CTRL,267 TPS65219_ENABLE_LDO4_EN_MASK, 0, 0, ldos_3_4_ranges,268 3, 0, 0, NULL, 0, 0),269};270 271static irqreturn_t tps65219_regulator_irq_handler(int irq, void *data)272{273 struct tps65219_regulator_irq_data *irq_data = data;274 275 if (irq_data->type->event_name[0] == '\0') {276 /* This is the timeout interrupt no specific regulator */277 dev_err(irq_data->dev,278 "System was put in shutdown due to timeout during an active or standby transition.\n");279 return IRQ_HANDLED;280 }281 282 regulator_notifier_call_chain(irq_data->rdev,283 irq_data->type->event, NULL);284 285 dev_err(irq_data->dev, "Error IRQ trap %s for %s\n",286 irq_data->type->event_name, irq_data->type->regulator_name);287 return IRQ_HANDLED;288}289 290static int tps65219_get_rdev_by_name(const char *regulator_name,291 struct regulator_dev *rdevtbl[7],292 struct regulator_dev **dev)293{294 int i;295 296 for (i = 0; i < ARRAY_SIZE(regulators); i++) {297 if (strcmp(regulator_name, regulators[i].name) == 0) {298 *dev = rdevtbl[i];299 return 0;300 }301 }302 return -EINVAL;303}304 305static int tps65219_regulator_probe(struct platform_device *pdev)306{307 struct tps65219 *tps = dev_get_drvdata(pdev->dev.parent);308 struct regulator_dev *rdev;309 struct regulator_config config = { };310 int i;311 int error;312 int irq;313 struct tps65219_regulator_irq_data *irq_data;314 struct tps65219_regulator_irq_type *irq_type;315 struct regulator_dev *rdevtbl[7];316 317 config.dev = tps->dev;318 config.driver_data = tps;319 config.regmap = tps->regmap;320 321 for (i = 0; i < ARRAY_SIZE(regulators); i++) {322 dev_dbg(tps->dev, "%s regul i= %d START", __func__, i);323 rdev = devm_regulator_register(&pdev->dev, ®ulators[i],324 &config);325 if (IS_ERR(rdev)) {326 dev_err(tps->dev, "failed to register %s regulator\n",327 regulators[i].name);328 return PTR_ERR(rdev);329 }330 rdevtbl[i] = rdev;331 dev_dbg(tps->dev, "%s regul i= %d COMPLETED", __func__, i);332 }333 334 irq_data = devm_kmalloc(tps->dev,335 ARRAY_SIZE(tps65219_regulator_irq_types) *336 sizeof(struct tps65219_regulator_irq_data),337 GFP_KERNEL);338 if (!irq_data)339 return -ENOMEM;340 341 for (i = 0; i < ARRAY_SIZE(tps65219_regulator_irq_types); ++i) {342 irq_type = &tps65219_regulator_irq_types[i];343 344 irq = platform_get_irq_byname(pdev, irq_type->irq_name);345 if (irq < 0)346 return -EINVAL;347 348 irq_data[i].dev = tps->dev;349 irq_data[i].type = irq_type;350 351 tps65219_get_rdev_by_name(irq_type->regulator_name, rdevtbl, &rdev);352 if (IS_ERR(rdev)) {353 dev_err(tps->dev, "Failed to get rdev for %s\n",354 irq_type->regulator_name);355 return -EINVAL;356 }357 irq_data[i].rdev = rdev;358 359 error = devm_request_threaded_irq(tps->dev, irq, NULL,360 tps65219_regulator_irq_handler,361 IRQF_ONESHOT,362 irq_type->irq_name,363 &irq_data[i]);364 if (error) {365 dev_err(tps->dev, "failed to request %s IRQ %d: %d\n",366 irq_type->irq_name, irq, error);367 return error;368 }369 }370 371 return 0;372}373 374static const struct platform_device_id tps65219_regulator_id_table[] = {375 { "tps65219-regulator", },376 { /* sentinel */ }377};378MODULE_DEVICE_TABLE(platform, tps65219_regulator_id_table);379 380static struct platform_driver tps65219_regulator_driver = {381 .driver = {382 .name = "tps65219-pmic",383 .probe_type = PROBE_PREFER_ASYNCHRONOUS,384 },385 .probe = tps65219_regulator_probe,386 .id_table = tps65219_regulator_id_table,387};388 389module_platform_driver(tps65219_regulator_driver);390 391MODULE_AUTHOR("Jerome Neanne <j-neanne@baylibre.com>");392MODULE_DESCRIPTION("TPS65219 voltage regulator driver");393MODULE_ALIAS("platform:tps65219-pmic");394MODULE_LICENSE("GPL");395