| // SPDX-License-Identifier: GPL-2.0 |
| // |
| // Regulator driver for tps6594 PMIC |
| // |
| // Copyright (C) 2023 BayLibre Incorporated - https://www.baylibre.com/ |
| |
| #include <linux/device.h> |
| #include <linux/err.h> |
| #include <linux/init.h> |
| #include <linux/kernel.h> |
| #include <linux/module.h> |
| #include <linux/of.h> |
| #include <linux/platform_device.h> |
| #include <linux/regmap.h> |
| #include <linux/regulator/driver.h> |
| #include <linux/regulator/machine.h> |
| #include <linux/regulator/of_regulator.h> |
| |
| #include <linux/mfd/tps6594.h> |
| |
| #define BUCK_NB 5 |
| #define LDO_NB 4 |
| #define MULTI_PHASE_NB 4 |
| #define REGS_INT_NB 4 |
| |
| enum tps6594_regulator_id { |
| /* DCDC's */ |
| TPS6594_BUCK_1, |
| TPS6594_BUCK_2, |
| TPS6594_BUCK_3, |
| TPS6594_BUCK_4, |
| TPS6594_BUCK_5, |
| |
| /* LDOs */ |
| TPS6594_LDO_1, |
| TPS6594_LDO_2, |
| TPS6594_LDO_3, |
| TPS6594_LDO_4, |
| }; |
| |
| enum tps6594_multi_regulator_id { |
| /* Multi-phase DCDC's */ |
| TPS6594_BUCK_12, |
| TPS6594_BUCK_34, |
| TPS6594_BUCK_123, |
| TPS6594_BUCK_1234, |
| }; |
| |
| struct tps6594_regulator_irq_type { |
| const char *irq_name; |
| const char *regulator_name; |
| const char *event_name; |
| unsigned long event; |
| }; |
| |
| static struct tps6594_regulator_irq_type tps6594_ext_regulator_irq_types[] = { |
| { TPS6594_IRQ_NAME_VCCA_OV, "VCCA", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, |
| { TPS6594_IRQ_NAME_VCCA_UV, "VCCA", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE }, |
| { TPS6594_IRQ_NAME_VMON1_OV, "VMON1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, |
| { TPS6594_IRQ_NAME_VMON1_UV, "VMON1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE }, |
| { TPS6594_IRQ_NAME_VMON1_RV, "VMON1", "residual voltage", |
| REGULATOR_EVENT_OVER_VOLTAGE_WARN }, |
| { TPS6594_IRQ_NAME_VMON2_OV, "VMON2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, |
| { TPS6594_IRQ_NAME_VMON2_UV, "VMON2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE }, |
| { TPS6594_IRQ_NAME_VMON2_RV, "VMON2", "residual voltage", |
| REGULATOR_EVENT_OVER_VOLTAGE_WARN }, |
| }; |
| |
| struct tps6594_regulator_irq_data { |
| struct device *dev; |
| struct tps6594_regulator_irq_type *type; |
| struct regulator_dev *rdev; |
| }; |
| |
| struct tps6594_ext_regulator_irq_data { |
| struct device *dev; |
| struct tps6594_regulator_irq_type *type; |
| }; |
| |
| #define TPS6594_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(300000, 0x0, 0xe, 20000), |
| REGULATOR_LINEAR_RANGE(600000, 0xf, 0x72, 5000), |
| REGULATOR_LINEAR_RANGE(1100000, 0x73, 0xaa, 10000), |
| REGULATOR_LINEAR_RANGE(1660000, 0xab, 0xff, 20000), |
| }; |
| |
| static const struct linear_range ldos_1_2_3_ranges[] = { |
| REGULATOR_LINEAR_RANGE(600000, 0x4, 0x3a, 50000), |
| }; |
| |
| static const struct linear_range ldos_4_ranges[] = { |
| REGULATOR_LINEAR_RANGE(1200000, 0x20, 0x74, 25000), |
| }; |
| |
| /* Operations permitted on BUCK1/2/3/4/5 */ |
| static const struct regulator_ops tps6594_bucks_ops = { |
| .is_enabled = regulator_is_enabled_regmap, |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .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 LDO1/2/3 */ |
| static const struct regulator_ops tps6594_ldos_1_2_3_ops = { |
| .is_enabled = regulator_is_enabled_regmap, |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .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 LDO4 */ |
| static const struct regulator_ops tps6594_ldos_4_ops = { |
| .is_enabled = regulator_is_enabled_regmap, |
| .enable = regulator_enable_regmap, |
| .disable = regulator_disable_regmap, |
| .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 buck_regs[] = { |
| TPS6594_REGULATOR("BUCK1", "buck1", TPS6594_BUCK_1, |
| REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET, |
| TPS6594_REG_BUCKX_VOUT_1(0), |
| TPS6594_MASK_BUCKS_VSET, |
| TPS6594_REG_BUCKX_CTRL(0), |
| TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges, |
| 4, 0, 0, NULL, 0, 0), |
| TPS6594_REGULATOR("BUCK2", "buck2", TPS6594_BUCK_2, |
| REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET, |
| TPS6594_REG_BUCKX_VOUT_1(1), |
| TPS6594_MASK_BUCKS_VSET, |
| TPS6594_REG_BUCKX_CTRL(1), |
| TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges, |
| 4, 0, 0, NULL, 0, 0), |
| TPS6594_REGULATOR("BUCK3", "buck3", TPS6594_BUCK_3, |
| REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET, |
| TPS6594_REG_BUCKX_VOUT_1(2), |
| TPS6594_MASK_BUCKS_VSET, |
| TPS6594_REG_BUCKX_CTRL(2), |
| TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges, |
| 4, 0, 0, NULL, 0, 0), |
| TPS6594_REGULATOR("BUCK4", "buck4", TPS6594_BUCK_4, |
| REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET, |
| TPS6594_REG_BUCKX_VOUT_1(3), |
| TPS6594_MASK_BUCKS_VSET, |
| TPS6594_REG_BUCKX_CTRL(3), |
| TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges, |
| 4, 0, 0, NULL, 0, 0), |
| TPS6594_REGULATOR("BUCK5", "buck5", TPS6594_BUCK_5, |
| REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET, |
| TPS6594_REG_BUCKX_VOUT_1(4), |
| TPS6594_MASK_BUCKS_VSET, |
| TPS6594_REG_BUCKX_CTRL(4), |
| TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges, |
| 4, 0, 0, NULL, 0, 0), |
| }; |
| |
| static struct tps6594_regulator_irq_type tps6594_buck1_irq_types[] = { |
| { TPS6594_IRQ_NAME_BUCK1_OV, "BUCK1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, |
| { TPS6594_IRQ_NAME_BUCK1_UV, "BUCK1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE }, |
| { TPS6594_IRQ_NAME_BUCK1_SC, "BUCK1", "short circuit", REGULATOR_EVENT_REGULATION_OUT }, |
| { TPS6594_IRQ_NAME_BUCK1_ILIM, "BUCK1", "reach ilim, overcurrent", |
| REGULATOR_EVENT_OVER_CURRENT }, |
| }; |
| |
| static struct tps6594_regulator_irq_type tps6594_buck2_irq_types[] = { |
| { TPS6594_IRQ_NAME_BUCK2_OV, "BUCK2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, |
| { TPS6594_IRQ_NAME_BUCK2_UV, "BUCK2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE }, |
| { TPS6594_IRQ_NAME_BUCK2_SC, "BUCK2", "short circuit", REGULATOR_EVENT_REGULATION_OUT }, |
| { TPS6594_IRQ_NAME_BUCK2_ILIM, "BUCK2", "reach ilim, overcurrent", |
| REGULATOR_EVENT_OVER_CURRENT }, |
| }; |
| |
| static struct tps6594_regulator_irq_type tps6594_buck3_irq_types[] = { |
| { TPS6594_IRQ_NAME_BUCK3_OV, "BUCK3", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, |
| { TPS6594_IRQ_NAME_BUCK3_UV, "BUCK3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE }, |
| { TPS6594_IRQ_NAME_BUCK3_SC, "BUCK3", "short circuit", REGULATOR_EVENT_REGULATION_OUT }, |
| { TPS6594_IRQ_NAME_BUCK3_ILIM, "BUCK3", "reach ilim, overcurrent", |
| REGULATOR_EVENT_OVER_CURRENT }, |
| }; |
| |
| static struct tps6594_regulator_irq_type tps6594_buck4_irq_types[] = { |
| { TPS6594_IRQ_NAME_BUCK4_OV, "BUCK4", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, |
| { TPS6594_IRQ_NAME_BUCK4_UV, "BUCK4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE }, |
| { TPS6594_IRQ_NAME_BUCK4_SC, "BUCK4", "short circuit", REGULATOR_EVENT_REGULATION_OUT }, |
| { TPS6594_IRQ_NAME_BUCK4_ILIM, "BUCK4", "reach ilim, overcurrent", |
| REGULATOR_EVENT_OVER_CURRENT }, |
| }; |
| |
| static struct tps6594_regulator_irq_type tps6594_buck5_irq_types[] = { |
| { TPS6594_IRQ_NAME_BUCK5_OV, "BUCK5", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, |
| { TPS6594_IRQ_NAME_BUCK5_UV, "BUCK5", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE }, |
| { TPS6594_IRQ_NAME_BUCK5_SC, "BUCK5", "short circuit", REGULATOR_EVENT_REGULATION_OUT }, |
| { TPS6594_IRQ_NAME_BUCK5_ILIM, "BUCK5", "reach ilim, overcurrent", |
| REGULATOR_EVENT_OVER_CURRENT }, |
| }; |
| |
| static struct tps6594_regulator_irq_type tps6594_ldo1_irq_types[] = { |
| { TPS6594_IRQ_NAME_LDO1_OV, "LDO1", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, |
| { TPS6594_IRQ_NAME_LDO1_UV, "LDO1", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE }, |
| { TPS6594_IRQ_NAME_LDO1_SC, "LDO1", "short circuit", REGULATOR_EVENT_REGULATION_OUT }, |
| { TPS6594_IRQ_NAME_LDO1_ILIM, "LDO1", "reach ilim, overcurrent", |
| REGULATOR_EVENT_OVER_CURRENT }, |
| }; |
| |
| static struct tps6594_regulator_irq_type tps6594_ldo2_irq_types[] = { |
| { TPS6594_IRQ_NAME_LDO2_OV, "LDO2", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, |
| { TPS6594_IRQ_NAME_LDO2_UV, "LDO2", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE }, |
| { TPS6594_IRQ_NAME_LDO2_SC, "LDO2", "short circuit", REGULATOR_EVENT_REGULATION_OUT }, |
| { TPS6594_IRQ_NAME_LDO2_ILIM, "LDO2", "reach ilim, overcurrent", |
| REGULATOR_EVENT_OVER_CURRENT }, |
| }; |
| |
| static struct tps6594_regulator_irq_type tps6594_ldo3_irq_types[] = { |
| { TPS6594_IRQ_NAME_LDO3_OV, "LDO3", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, |
| { TPS6594_IRQ_NAME_LDO3_UV, "LDO3", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE }, |
| { TPS6594_IRQ_NAME_LDO3_SC, "LDO3", "short circuit", REGULATOR_EVENT_REGULATION_OUT }, |
| { TPS6594_IRQ_NAME_LDO3_ILIM, "LDO3", "reach ilim, overcurrent", |
| REGULATOR_EVENT_OVER_CURRENT }, |
| }; |
| |
| static struct tps6594_regulator_irq_type tps6594_ldo4_irq_types[] = { |
| { TPS6594_IRQ_NAME_LDO4_OV, "LDO4", "overvoltage", REGULATOR_EVENT_OVER_VOLTAGE_WARN }, |
| { TPS6594_IRQ_NAME_LDO4_UV, "LDO4", "undervoltage", REGULATOR_EVENT_UNDER_VOLTAGE }, |
| { TPS6594_IRQ_NAME_LDO4_SC, "LDO4", "short circuit", REGULATOR_EVENT_REGULATION_OUT }, |
| { TPS6594_IRQ_NAME_LDO4_ILIM, "LDO4", "reach ilim, overcurrent", |
| REGULATOR_EVENT_OVER_CURRENT }, |
| }; |
| |
| static struct tps6594_regulator_irq_type *tps6594_bucks_irq_types[] = { |
| tps6594_buck1_irq_types, |
| tps6594_buck2_irq_types, |
| tps6594_buck3_irq_types, |
| tps6594_buck4_irq_types, |
| tps6594_buck5_irq_types, |
| }; |
| |
| static struct tps6594_regulator_irq_type *tps6594_ldos_irq_types[] = { |
| tps6594_ldo1_irq_types, |
| tps6594_ldo2_irq_types, |
| tps6594_ldo3_irq_types, |
| tps6594_ldo4_irq_types, |
| }; |
| |
| static const struct regulator_desc multi_regs[] = { |
| TPS6594_REGULATOR("BUCK12", "buck12", TPS6594_BUCK_1, |
| REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET, |
| TPS6594_REG_BUCKX_VOUT_1(1), |
| TPS6594_MASK_BUCKS_VSET, |
| TPS6594_REG_BUCKX_CTRL(1), |
| TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges, |
| 4, 4000, 0, NULL, 0, 0), |
| TPS6594_REGULATOR("BUCK34", "buck34", TPS6594_BUCK_3, |
| REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET, |
| TPS6594_REG_BUCKX_VOUT_1(3), |
| TPS6594_MASK_BUCKS_VSET, |
| TPS6594_REG_BUCKX_CTRL(3), |
| TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges, |
| 4, 0, 0, NULL, 0, 0), |
| TPS6594_REGULATOR("BUCK123", "buck123", TPS6594_BUCK_1, |
| REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET, |
| TPS6594_REG_BUCKX_VOUT_1(1), |
| TPS6594_MASK_BUCKS_VSET, |
| TPS6594_REG_BUCKX_CTRL(1), |
| TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges, |
| 4, 4000, 0, NULL, 0, 0), |
| TPS6594_REGULATOR("BUCK1234", "buck1234", TPS6594_BUCK_1, |
| REGULATOR_VOLTAGE, tps6594_bucks_ops, TPS6594_MASK_BUCKS_VSET, |
| TPS6594_REG_BUCKX_VOUT_1(1), |
| TPS6594_MASK_BUCKS_VSET, |
| TPS6594_REG_BUCKX_CTRL(1), |
| TPS6594_BIT_BUCK_EN, 0, 0, bucks_ranges, |
| 4, 4000, 0, NULL, 0, 0), |
| }; |
| |
| static const struct regulator_desc ldo_regs[] = { |
| TPS6594_REGULATOR("LDO1", "ldo1", TPS6594_LDO_1, |
| REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET, |
| TPS6594_REG_LDOX_VOUT(0), |
| TPS6594_MASK_LDO123_VSET, |
| TPS6594_REG_LDOX_CTRL(0), |
| TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges, |
| 1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS), |
| TPS6594_REGULATOR("LDO2", "ldo2", TPS6594_LDO_2, |
| REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET, |
| TPS6594_REG_LDOX_VOUT(1), |
| TPS6594_MASK_LDO123_VSET, |
| TPS6594_REG_LDOX_CTRL(1), |
| TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges, |
| 1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS), |
| TPS6594_REGULATOR("LDO3", "ldo3", TPS6594_LDO_3, |
| REGULATOR_VOLTAGE, tps6594_ldos_1_2_3_ops, TPS6594_MASK_LDO123_VSET, |
| TPS6594_REG_LDOX_VOUT(2), |
| TPS6594_MASK_LDO123_VSET, |
| TPS6594_REG_LDOX_CTRL(2), |
| TPS6594_BIT_LDO_EN, 0, 0, ldos_1_2_3_ranges, |
| 1, 0, 0, NULL, 0, TPS6594_BIT_LDO_BYPASS), |
| TPS6594_REGULATOR("LDO4", "ldo4", TPS6594_LDO_4, |
| REGULATOR_VOLTAGE, tps6594_ldos_4_ops, TPS6594_MASK_LDO4_VSET >> 1, |
| TPS6594_REG_LDOX_VOUT(3), |
| TPS6594_MASK_LDO4_VSET, |
| TPS6594_REG_LDOX_CTRL(3), |
| TPS6594_BIT_LDO_EN, 0, 0, ldos_4_ranges, |
| 1, 0, 0, NULL, 0, 0), |
| }; |
| |
| static irqreturn_t tps6594_regulator_irq_handler(int irq, void *data) |
| { |
| struct tps6594_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; |
| } |
| |
| dev_err(irq_data->dev, "Error IRQ trap %s for %s\n", |
| irq_data->type->event_name, irq_data->type->regulator_name); |
| |
| regulator_notifier_call_chain(irq_data->rdev, |
| irq_data->type->event, NULL); |
| |
| return IRQ_HANDLED; |
| } |
| |
| static int tps6594_request_reg_irqs(struct platform_device *pdev, |
| struct regulator_dev *rdev, |
| struct tps6594_regulator_irq_data *irq_data, |
| struct tps6594_regulator_irq_type *tps6594_regs_irq_types, |
| int *irq_idx) |
| { |
| struct tps6594_regulator_irq_type *irq_type; |
| struct tps6594 *tps = dev_get_drvdata(pdev->dev.parent); |
| int j; |
| int irq; |
| int error; |
| |
| for (j = 0; j < REGS_INT_NB; j++) { |
| irq_type = &tps6594_regs_irq_types[j]; |
| irq = platform_get_irq_byname(pdev, irq_type->irq_name); |
| if (irq < 0) |
| return -EINVAL; |
| |
| irq_data[*irq_idx].dev = tps->dev; |
| irq_data[*irq_idx].type = irq_type; |
| irq_data[*irq_idx].rdev = rdev; |
| |
| error = devm_request_threaded_irq(tps->dev, irq, NULL, |
| tps6594_regulator_irq_handler, IRQF_ONESHOT, |
| irq_type->irq_name, &irq_data[*irq_idx]); |
| if (error) { |
| dev_err(tps->dev, "tps6594 failed to request %s IRQ %d: %d\n", |
| irq_type->irq_name, irq, error); |
| return error; |
| } |
| (*irq_idx)++; |
| } |
| return 0; |
| } |
| |
| static int tps6594_regulator_probe(struct platform_device *pdev) |
| { |
| struct tps6594 *tps = dev_get_drvdata(pdev->dev.parent); |
| struct regulator_dev *rdev; |
| struct device_node *np = NULL; |
| struct device_node *np_pmic_parent = NULL; |
| struct regulator_config config = {}; |
| struct tps6594_regulator_irq_data *irq_data; |
| struct tps6594_ext_regulator_irq_data *irq_ext_reg_data; |
| struct tps6594_regulator_irq_type *irq_type; |
| u8 buck_configured[BUCK_NB] = { 0 }; |
| u8 buck_multi[MULTI_PHASE_NB] = { 0 }; |
| static const char * const multiphases[] = {"buck12", "buck123", "buck1234", "buck34"}; |
| static const char *npname; |
| int error, i, irq, multi, delta; |
| int irq_idx = 0; |
| int buck_idx = 0; |
| size_t ext_reg_irq_nb = 2; |
| size_t reg_irq_nb; |
| enum { |
| MULTI_BUCK12, |
| MULTI_BUCK123, |
| MULTI_BUCK1234, |
| MULTI_BUCK12_34, |
| MULTI_FIRST = MULTI_BUCK12, |
| MULTI_LAST = MULTI_BUCK12_34, |
| MULTI_NUM = MULTI_LAST - MULTI_FIRST + 1 |
| }; |
| |
| config.dev = tps->dev; |
| config.driver_data = tps; |
| config.regmap = tps->regmap; |
| |
| /* |
| * Switch case defines different possible multi phase config |
| * This is based on dts buck node name. |
| * Buck node name must be chosen accordingly. |
| * Default case is no Multiphase buck. |
| * In case of Multiphase configuration, value should be defined for |
| * buck_configured to avoid creating bucks for every buck in multiphase |
| */ |
| for (multi = MULTI_FIRST; multi < MULTI_NUM; multi++) { |
| np = of_find_node_by_name(tps->dev->of_node, multiphases[multi]); |
| npname = of_node_full_name(np); |
| np_pmic_parent = of_get_parent(of_get_parent(np)); |
| if (of_node_cmp(of_node_full_name(np_pmic_parent), tps->dev->of_node->full_name)) |
| continue; |
| delta = strcmp(npname, multiphases[multi]); |
| if (!delta) { |
| switch (multi) { |
| case MULTI_BUCK12: |
| buck_multi[0] = 1; |
| buck_configured[0] = 1; |
| buck_configured[1] = 1; |
| break; |
| /* multiphase buck34 is supported only with buck12 */ |
| case MULTI_BUCK12_34: |
| buck_multi[0] = 1; |
| buck_multi[1] = 1; |
| buck_configured[0] = 1; |
| buck_configured[1] = 1; |
| buck_configured[2] = 1; |
| buck_configured[3] = 1; |
| break; |
| case MULTI_BUCK123: |
| buck_multi[2] = 1; |
| buck_configured[0] = 1; |
| buck_configured[1] = 1; |
| buck_configured[2] = 1; |
| break; |
| case MULTI_BUCK1234: |
| buck_multi[3] = 1; |
| buck_configured[0] = 1; |
| buck_configured[1] = 1; |
| buck_configured[2] = 1; |
| buck_configured[3] = 1; |
| break; |
| } |
| } |
| } |
| |
| if (tps->chip_id == LP8764) { |
| /* There is only 4 buck on LP8764 */ |
| buck_configured[4] = 1; |
| reg_irq_nb = size_mul(REGS_INT_NB, (BUCK_NB - 1)); |
| } else { |
| reg_irq_nb = size_mul(REGS_INT_NB, (size_add(BUCK_NB, LDO_NB))); |
| } |
| |
| irq_data = devm_kmalloc_array(tps->dev, reg_irq_nb, |
| sizeof(struct tps6594_regulator_irq_data), GFP_KERNEL); |
| if (!irq_data) |
| return -ENOMEM; |
| |
| for (i = 0; i < MULTI_PHASE_NB; i++) { |
| if (buck_multi[i] == 0) |
| continue; |
| |
| rdev = devm_regulator_register(&pdev->dev, &multi_regs[i], &config); |
| if (IS_ERR(rdev)) |
| return dev_err_probe(tps->dev, PTR_ERR(rdev), |
| "failed to register %s regulator\n", |
| pdev->name); |
| |
| /* config multiphase buck12+buck34 */ |
| if (i == 1) |
| buck_idx = 2; |
| error = tps6594_request_reg_irqs(pdev, rdev, irq_data, |
| tps6594_bucks_irq_types[buck_idx], &irq_idx); |
| if (error) |
| return error; |
| error = tps6594_request_reg_irqs(pdev, rdev, irq_data, |
| tps6594_bucks_irq_types[buck_idx + 1], &irq_idx); |
| if (error) |
| return error; |
| |
| if (i == 2 || i == 3) { |
| error = tps6594_request_reg_irqs(pdev, rdev, irq_data, |
| tps6594_bucks_irq_types[buck_idx + 2], |
| &irq_idx); |
| if (error) |
| return error; |
| } |
| if (i == 3) { |
| error = tps6594_request_reg_irqs(pdev, rdev, irq_data, |
| tps6594_bucks_irq_types[buck_idx + 3], |
| &irq_idx); |
| if (error) |
| return error; |
| } |
| } |
| |
| for (i = 0; i < BUCK_NB; i++) { |
| if (buck_configured[i] == 1) |
| continue; |
| |
| rdev = devm_regulator_register(&pdev->dev, &buck_regs[i], &config); |
| if (IS_ERR(rdev)) |
| return dev_err_probe(tps->dev, PTR_ERR(rdev), |
| "failed to register %s regulator\n", |
| pdev->name); |
| |
| error = tps6594_request_reg_irqs(pdev, rdev, irq_data, |
| tps6594_bucks_irq_types[i], &irq_idx); |
| if (error) |
| return error; |
| } |
| |
| /* LP8764 dosen't have LDO */ |
| if (tps->chip_id != LP8764) { |
| for (i = 0; i < ARRAY_SIZE(ldo_regs); i++) { |
| rdev = devm_regulator_register(&pdev->dev, &ldo_regs[i], &config); |
| if (IS_ERR(rdev)) |
| return dev_err_probe(tps->dev, PTR_ERR(rdev), |
| "failed to register %s regulator\n", |
| pdev->name); |
| |
| error = tps6594_request_reg_irqs(pdev, rdev, irq_data, |
| tps6594_ldos_irq_types[i], |
| &irq_idx); |
| if (error) |
| return error; |
| } |
| } |
| |
| if (tps->chip_id == LP8764) |
| ext_reg_irq_nb = ARRAY_SIZE(tps6594_ext_regulator_irq_types); |
| |
| irq_ext_reg_data = devm_kmalloc_array(tps->dev, |
| ext_reg_irq_nb, |
| sizeof(struct tps6594_ext_regulator_irq_data), |
| GFP_KERNEL); |
| if (!irq_ext_reg_data) |
| return -ENOMEM; |
| |
| for (i = 0; i < ext_reg_irq_nb; ++i) { |
| irq_type = &tps6594_ext_regulator_irq_types[i]; |
| |
| irq = platform_get_irq_byname(pdev, irq_type->irq_name); |
| if (irq < 0) |
| return -EINVAL; |
| |
| irq_ext_reg_data[i].dev = tps->dev; |
| irq_ext_reg_data[i].type = irq_type; |
| |
| error = devm_request_threaded_irq(tps->dev, irq, NULL, |
| tps6594_regulator_irq_handler, |
| IRQF_ONESHOT, |
| irq_type->irq_name, |
| &irq_ext_reg_data[i]); |
| if (error) |
| return dev_err_probe(tps->dev, error, |
| "failed to request %s IRQ %d\n", |
| irq_type->irq_name, irq); |
| } |
| return 0; |
| } |
| |
| static struct platform_driver tps6594_regulator_driver = { |
| .driver = { |
| .name = "tps6594-regulator", |
| }, |
| .probe = tps6594_regulator_probe, |
| }; |
| |
| module_platform_driver(tps6594_regulator_driver); |
| |
| MODULE_ALIAS("platform:tps6594-regulator"); |
| MODULE_AUTHOR("Jerome Neanne <jneanne@baylibre.com>"); |
| MODULE_DESCRIPTION("TPS6594 voltage regulator driver"); |
| MODULE_LICENSE("GPL"); |
