// SPDX-License-Identifier: GPL-2.0 // // tps65219-regulator.c // // Regulator driver for TPS65219 PMIC // // Copyright (C) 2022 BayLibre Incorporated - https://www.baylibre.com/ // // This implementation derived from tps65218 authored by // "J Keerthy " // #include #include #include #include #include #include #include #include #include #include #include #include struct tps65219_regulator_irq_type { const char *irq_name; const char *regulator_name; const char *event_name; unsigned long event; }; static struct tps65219_regulator_irq_type tps65219_regulator_irq_types[] = { { "LDO3_SCG", "LDO3", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT }, { "LDO3_OC", "LDO3", "overcurrent", REGULATOR_EVENT_OVER_CURRENT }, { "LDO3_UV", "LDO3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE }, { "LDO4_SCG", "LDO4", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT }, { "LDO4_OC", "LDO4", "overcurrent", REGULATOR_EVENT_OVER_CURRENT }, { "LDO4_UV", "LDO4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE }, { "LDO1_SCG", "LDO1", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT }, { "LDO1_OC", "LDO1", "overcurrent", REGULATOR_EVENT_OVER_CURRENT }, { "LDO1_UV", "LDO1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE }, { "LDO2_SCG", "LDO2", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT }, { "LDO2_OC", "LDO2", "overcurrent", REGULATOR_EVENT_OVER_CURRENT }, { "LDO2_UV", "LDO2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE }, { "BUCK3_SCG", "BUCK3", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT }, { "BUCK3_OC", "BUCK3", "overcurrent", REGULATOR_EVENT_OVER_CURRENT }, { "BUCK3_NEG_OC", "BUCK3", "negative overcurrent", REGULATOR_EVENT_OVER_CURRENT }, { "BUCK3_UV", "BUCK3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE }, { "BUCK1_SCG", "BUCK1", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT }, { "BUCK1_OC", "BUCK1", "overcurrent", REGULATOR_EVENT_OVER_CURRENT }, { "BUCK1_NEG_OC", "BUCK1", "negative overcurrent", REGULATOR_EVENT_OVER_CURRENT }, { "BUCK1_UV", "BUCK1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE }, { "BUCK2_SCG", "BUCK2", "short circuit to ground", REGULATOR_EVENT_REGULATION_OUT }, { "BUCK2_OC", "BUCK2", "overcurrent", REGULATOR_EVENT_OVER_CURRENT }, { "BUCK2_NEG_OC", "BUCK2", "negative overcurrent", REGULATOR_EVENT_OVER_CURRENT }, { "BUCK2_UV", "BUCK2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE }, { "BUCK1_RV", "BUCK1", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, { "BUCK2_RV", "BUCK2", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, { "BUCK3_RV", "BUCK3", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, { "LDO1_RV", "LDO1", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, { "LDO2_RV", "LDO2", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, { "LDO3_RV", "LDO3", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, { "LDO4_RV", "LDO4", "residual voltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, { "BUCK1_RV_SD", "BUCK1", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, { "BUCK2_RV_SD", "BUCK2", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, { "BUCK3_RV_SD", "BUCK3", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, { "LDO1_RV_SD", "LDO1", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, { "LDO2_RV_SD", "LDO2", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, { "LDO3_RV_SD", "LDO3", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, { "LDO4_RV_SD", "LDO4", "residual voltage on shutdown", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, { "SENSOR_3_WARM", "SENSOR3", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN}, { "SENSOR_2_WARM", "SENSOR2", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN }, { "SENSOR_1_WARM", "SENSOR1", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN }, { "SENSOR_0_WARM", "SENSOR0", "warm temperature", REGULATOR_EVENT_OVER_TEMP_WARN }, { "SENSOR_3_HOT", "SENSOR3", "hot temperature", REGULATOR_EVENT_OVER_TEMP}, { "SENSOR_2_HOT", "SENSOR2", "hot temperature", REGULATOR_EVENT_OVER_TEMP }, { "SENSOR_1_HOT", "SENSOR1", "hot temperature", REGULATOR_EVENT_OVER_TEMP }, { "SENSOR_0_HOT", "SENSOR0", "hot temperature", REGULATOR_EVENT_OVER_TEMP }, { "TIMEOUT", "", "", REGULATOR_EVENT_ABORT_VOLTAGE_CHANGE }, }; struct tps65219_regulator_irq_data { struct device *dev; struct tps65219_regulator_irq_type *type; struct regulator_dev *rdev; }; #define TPS65219_REGULATOR(_name, _of, _id, _type, _ops, _n, _vr, _vm, _er, \ _em, _cr, _cm, _lr, _nlr, _delay, _fuv, \ _ct, _ncl, _bpm) \ { \ .name = _name, \ .of_match = _of, \ .regulators_node = of_match_ptr("regulators"), \ .supply_name = _of, \ .id = _id, \ .ops = &(_ops), \ .n_voltages = _n, \ .type = _type, \ .owner = THIS_MODULE, \ .vsel_reg = _vr, \ .vsel_mask = _vm, \ .csel_reg = _cr, \ .csel_mask = _cm, \ .curr_table = _ct, \ .n_current_limits = _ncl, \ .enable_reg = _er, \ .enable_mask = _em, \ .volt_table = NULL, \ .linear_ranges = _lr, \ .n_linear_ranges = _nlr, \ .ramp_delay = _delay, \ .fixed_uV = _fuv, \ .bypass_reg = _vr, \ .bypass_mask = _bpm, \ } \ static const struct linear_range bucks_ranges[] = { REGULATOR_LINEAR_RANGE(600000, 0x0, 0x1f, 25000), REGULATOR_LINEAR_RANGE(1400000, 0x20, 0x33, 100000), REGULATOR_LINEAR_RANGE(3400000, 0x34, 0x3f, 0), }; static const struct linear_range ldos_1_2_ranges[] = { REGULATOR_LINEAR_RANGE(600000, 0x0, 0x37, 50000), REGULATOR_LINEAR_RANGE(3400000, 0x38, 0x3f, 0), }; static const struct linear_range ldos_3_4_ranges[] = { REGULATOR_LINEAR_RANGE(1200000, 0x0, 0xC, 0), REGULATOR_LINEAR_RANGE(1250000, 0xD, 0x35, 50000), REGULATOR_LINEAR_RANGE(3300000, 0x36, 0x3F, 0), }; static int tps65219_set_mode(struct regulator_dev *dev, unsigned int mode) { struct tps65219 *tps = rdev_get_drvdata(dev); switch (mode) { case REGULATOR_MODE_NORMAL: return regmap_set_bits(tps->regmap, TPS65219_REG_STBY_1_CONFIG, dev->desc->enable_mask); case REGULATOR_MODE_STANDBY: return regmap_clear_bits(tps->regmap, TPS65219_REG_STBY_1_CONFIG, dev->desc->enable_mask); default: return -EINVAL; } } static unsigned int tps65219_get_mode(struct regulator_dev *dev) { struct tps65219 *tps = rdev_get_drvdata(dev); unsigned int rid = rdev_get_id(dev); int ret, value = 0; ret = regmap_read(tps->regmap, TPS65219_REG_STBY_1_CONFIG, &value); if (ret) { dev_dbg(tps->dev, "%s failed for regulator %s: %d ", __func__, dev->desc->name, ret); return ret; } value = (value & BIT(rid)) >> rid; if (value) return REGULATOR_MODE_STANDBY; else return REGULATOR_MODE_NORMAL; } /* Operations permitted on BUCK1/2/3 */ static const struct regulator_ops tps65219_bucks_ops = { .is_enabled = regulator_is_enabled_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .set_mode = tps65219_set_mode, .get_mode = tps65219_get_mode, .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, .set_voltage_time_sel = regulator_set_voltage_time_sel, }; /* Operations permitted on LDO1/2 */ static const struct regulator_ops tps65219_ldos_1_2_ops = { .is_enabled = regulator_is_enabled_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .set_mode = tps65219_set_mode, .get_mode = tps65219_get_mode, .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, .set_bypass = regulator_set_bypass_regmap, .get_bypass = regulator_get_bypass_regmap, }; /* Operations permitted on LDO3/4 */ static const struct regulator_ops tps65219_ldos_3_4_ops = { .is_enabled = regulator_is_enabled_regmap, .enable = regulator_enable_regmap, .disable = regulator_disable_regmap, .set_mode = tps65219_set_mode, .get_mode = tps65219_get_mode, .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[] = { TPS65219_REGULATOR("BUCK1", "buck1", TPS65219_BUCK_1, REGULATOR_VOLTAGE, tps65219_bucks_ops, 64, TPS65219_REG_BUCK1_VOUT, TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL, TPS65219_ENABLE_BUCK1_EN_MASK, 0, 0, bucks_ranges, 3, 4000, 0, NULL, 0, 0), TPS65219_REGULATOR("BUCK2", "buck2", TPS65219_BUCK_2, REGULATOR_VOLTAGE, tps65219_bucks_ops, 64, TPS65219_REG_BUCK2_VOUT, TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL, TPS65219_ENABLE_BUCK2_EN_MASK, 0, 0, bucks_ranges, 3, 4000, 0, NULL, 0, 0), TPS65219_REGULATOR("BUCK3", "buck3", TPS65219_BUCK_3, REGULATOR_VOLTAGE, tps65219_bucks_ops, 64, TPS65219_REG_BUCK3_VOUT, TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL, TPS65219_ENABLE_BUCK3_EN_MASK, 0, 0, bucks_ranges, 3, 0, 0, NULL, 0, 0), TPS65219_REGULATOR("LDO1", "ldo1", TPS65219_LDO_1, REGULATOR_VOLTAGE, tps65219_ldos_1_2_ops, 64, TPS65219_REG_LDO1_VOUT, TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL, TPS65219_ENABLE_LDO1_EN_MASK, 0, 0, ldos_1_2_ranges, 2, 0, 0, NULL, 0, TPS65219_LDOS_BYP_CONFIG_MASK), TPS65219_REGULATOR("LDO2", "ldo2", TPS65219_LDO_2, REGULATOR_VOLTAGE, tps65219_ldos_1_2_ops, 64, TPS65219_REG_LDO2_VOUT, TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL, TPS65219_ENABLE_LDO2_EN_MASK, 0, 0, ldos_1_2_ranges, 2, 0, 0, NULL, 0, TPS65219_LDOS_BYP_CONFIG_MASK), TPS65219_REGULATOR("LDO3", "ldo3", TPS65219_LDO_3, REGULATOR_VOLTAGE, tps65219_ldos_3_4_ops, 64, TPS65219_REG_LDO3_VOUT, TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL, TPS65219_ENABLE_LDO3_EN_MASK, 0, 0, ldos_3_4_ranges, 3, 0, 0, NULL, 0, 0), TPS65219_REGULATOR("LDO4", "ldo4", TPS65219_LDO_4, REGULATOR_VOLTAGE, tps65219_ldos_3_4_ops, 64, TPS65219_REG_LDO4_VOUT, TPS65219_BUCKS_LDOS_VOUT_VSET_MASK, TPS65219_REG_ENABLE_CTRL, TPS65219_ENABLE_LDO4_EN_MASK, 0, 0, ldos_3_4_ranges, 3, 0, 0, NULL, 0, 0), }; static irqreturn_t tps65219_regulator_irq_handler(int irq, void *data) { struct tps65219_regulator_irq_data *irq_data = data; if (irq_data->type->event_name[0] == '\0') { /* This is the timeout interrupt no specific regulator */ dev_err(irq_data->dev, "System was put in shutdown due to timeout during an active or standby transition.\n"); return IRQ_HANDLED; } regulator_notifier_call_chain(irq_data->rdev, irq_data->type->event, NULL); dev_err(irq_data->dev, "Error IRQ trap %s for %s\n", irq_data->type->event_name, irq_data->type->regulator_name); return IRQ_HANDLED; } static int tps65219_get_rdev_by_name(const char *regulator_name, struct regulator_dev *rdevtbl[7], struct regulator_dev **dev) { int i; for (i = 0; i < ARRAY_SIZE(regulators); i++) { if (strcmp(regulator_name, regulators[i].name) == 0) { *dev = rdevtbl[i]; return 0; } } return -EINVAL; } static int tps65219_regulator_probe(struct platform_device *pdev) { struct tps65219 *tps = dev_get_drvdata(pdev->dev.parent); struct regulator_dev *rdev; struct regulator_config config = { }; int i; int error; int irq; struct tps65219_regulator_irq_data *irq_data; struct tps65219_regulator_irq_type *irq_type; struct regulator_dev *rdevtbl[7]; config.dev = tps->dev; config.driver_data = tps; config.regmap = tps->regmap; for (i = 0; i < ARRAY_SIZE(regulators); i++) { dev_dbg(tps->dev, "%s regul i= %d START", __func__, i); rdev = devm_regulator_register(&pdev->dev, ®ulators[i], &config); if (IS_ERR(rdev)) { dev_err(tps->dev, "failed to register %s regulator\n", regulators[i].name); return PTR_ERR(rdev); } rdevtbl[i] = rdev; dev_dbg(tps->dev, "%s regul i= %d COMPLETED", __func__, i); } irq_data = devm_kmalloc(tps->dev, ARRAY_SIZE(tps65219_regulator_irq_types) * sizeof(struct tps65219_regulator_irq_data), GFP_KERNEL); if (!irq_data) return -ENOMEM; for (i = 0; i < ARRAY_SIZE(tps65219_regulator_irq_types); ++i) { irq_type = &tps65219_regulator_irq_types[i]; irq = platform_get_irq_byname(pdev, irq_type->irq_name); if (irq < 0) return -EINVAL; irq_data[i].dev = tps->dev; irq_data[i].type = irq_type; tps65219_get_rdev_by_name(irq_type->regulator_name, rdevtbl, &rdev); if (IS_ERR(rdev)) { dev_err(tps->dev, "Failed to get rdev for %s\n", irq_type->regulator_name); return -EINVAL; } irq_data[i].rdev = rdev; error = devm_request_threaded_irq(tps->dev, irq, NULL, tps65219_regulator_irq_handler, IRQF_ONESHOT, irq_type->irq_name, &irq_data[i]); if (error) { dev_err(tps->dev, "failed to request %s IRQ %d: %d\n", irq_type->irq_name, irq, error); return error; } } return 0; } static const struct platform_device_id tps65219_regulator_id_table[] = { { "tps65219-regulator", }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(platform, tps65219_regulator_id_table); static struct platform_driver tps65219_regulator_driver = { .driver = { .name = "tps65219-pmic", .probe_type = PROBE_PREFER_ASYNCHRONOUS, }, .probe = tps65219_regulator_probe, .id_table = tps65219_regulator_id_table, }; module_platform_driver(tps65219_regulator_driver); MODULE_AUTHOR("Jerome Neanne "); MODULE_DESCRIPTION("TPS65219 voltage regulator driver"); MODULE_ALIAS("platform:tps65219-pmic"); MODULE_LICENSE("GPL");