| /* |
| * Copyright (c) 2016-2019, STMicroelectronics - All Rights Reserved |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| |
| #include <string.h> |
| |
| #include <common/debug.h> |
| #include <drivers/st/stpmic1.h> |
| |
| #define I2C_TIMEOUT_MS 25 |
| |
| struct regul_struct { |
| const char *dt_node_name; |
| const uint16_t *voltage_table; |
| uint8_t voltage_table_size; |
| uint8_t control_reg; |
| uint8_t low_power_reg; |
| uint8_t pull_down_reg; |
| uint8_t pull_down; |
| uint8_t mask_reset_reg; |
| uint8_t mask_reset; |
| }; |
| |
| static struct i2c_handle_s *pmic_i2c_handle; |
| static uint16_t pmic_i2c_addr; |
| |
| /* Voltage tables in mV */ |
| static const uint16_t buck1_voltage_table[] = { |
| 725, |
| 725, |
| 725, |
| 725, |
| 725, |
| 725, |
| 750, |
| 775, |
| 800, |
| 825, |
| 850, |
| 875, |
| 900, |
| 925, |
| 950, |
| 975, |
| 1000, |
| 1025, |
| 1050, |
| 1075, |
| 1100, |
| 1125, |
| 1150, |
| 1175, |
| 1200, |
| 1225, |
| 1250, |
| 1275, |
| 1300, |
| 1325, |
| 1350, |
| 1375, |
| 1400, |
| 1425, |
| 1450, |
| 1475, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| 1500, |
| }; |
| |
| static const uint16_t buck2_voltage_table[] = { |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1050, |
| 1050, |
| 1100, |
| 1100, |
| 1150, |
| 1150, |
| 1200, |
| 1200, |
| 1250, |
| 1250, |
| 1300, |
| 1300, |
| 1350, |
| 1350, |
| 1400, |
| 1400, |
| 1450, |
| 1450, |
| 1500, |
| }; |
| |
| static const uint16_t buck3_voltage_table[] = { |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1000, |
| 1100, |
| 1100, |
| 1100, |
| 1100, |
| 1200, |
| 1200, |
| 1200, |
| 1200, |
| 1300, |
| 1300, |
| 1300, |
| 1300, |
| 1400, |
| 1400, |
| 1400, |
| 1400, |
| 1500, |
| 1600, |
| 1700, |
| 1800, |
| 1900, |
| 2000, |
| 2100, |
| 2200, |
| 2300, |
| 2400, |
| 2500, |
| 2600, |
| 2700, |
| 2800, |
| 2900, |
| 3000, |
| 3100, |
| 3200, |
| 3300, |
| 3400, |
| }; |
| |
| static const uint16_t buck4_voltage_table[] = { |
| 600, |
| 625, |
| 650, |
| 675, |
| 700, |
| 725, |
| 750, |
| 775, |
| 800, |
| 825, |
| 850, |
| 875, |
| 900, |
| 925, |
| 950, |
| 975, |
| 1000, |
| 1025, |
| 1050, |
| 1075, |
| 1100, |
| 1125, |
| 1150, |
| 1175, |
| 1200, |
| 1225, |
| 1250, |
| 1275, |
| 1300, |
| 1300, |
| 1350, |
| 1350, |
| 1400, |
| 1400, |
| 1450, |
| 1450, |
| 1500, |
| 1600, |
| 1700, |
| 1800, |
| 1900, |
| 2000, |
| 2100, |
| 2200, |
| 2300, |
| 2400, |
| 2500, |
| 2600, |
| 2700, |
| 2800, |
| 2900, |
| 3000, |
| 3100, |
| 3200, |
| 3300, |
| 3400, |
| 3500, |
| 3600, |
| 3700, |
| 3800, |
| 3900, |
| }; |
| |
| static const uint16_t ldo1_voltage_table[] = { |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1800, |
| 1900, |
| 2000, |
| 2100, |
| 2200, |
| 2300, |
| 2400, |
| 2500, |
| 2600, |
| 2700, |
| 2800, |
| 2900, |
| 3000, |
| 3100, |
| 3200, |
| 3300, |
| }; |
| |
| static const uint16_t ldo2_voltage_table[] = { |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1800, |
| 1900, |
| 2000, |
| 2100, |
| 2200, |
| 2300, |
| 2400, |
| 2500, |
| 2600, |
| 2700, |
| 2800, |
| 2900, |
| 3000, |
| 3100, |
| 3200, |
| 3300, |
| }; |
| |
| static const uint16_t ldo3_voltage_table[] = { |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1800, |
| 1900, |
| 2000, |
| 2100, |
| 2200, |
| 2300, |
| 2400, |
| 2500, |
| 2600, |
| 2700, |
| 2800, |
| 2900, |
| 3000, |
| 3100, |
| 3200, |
| 3300, |
| 3300, |
| 3300, |
| 3300, |
| 3300, |
| 3300, |
| 3300, |
| 500, |
| 0xFFFF, /* VREFDDR */ |
| }; |
| |
| static const uint16_t ldo5_voltage_table[] = { |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1700, |
| 1800, |
| 1900, |
| 2000, |
| 2100, |
| 2200, |
| 2300, |
| 2400, |
| 2500, |
| 2600, |
| 2700, |
| 2800, |
| 2900, |
| 3000, |
| 3100, |
| 3200, |
| 3300, |
| 3400, |
| 3500, |
| 3600, |
| 3700, |
| 3800, |
| 3900, |
| }; |
| |
| static const uint16_t ldo6_voltage_table[] = { |
| 900, |
| 1000, |
| 1100, |
| 1200, |
| 1300, |
| 1400, |
| 1500, |
| 1600, |
| 1700, |
| 1800, |
| 1900, |
| 2000, |
| 2100, |
| 2200, |
| 2300, |
| 2400, |
| 2500, |
| 2600, |
| 2700, |
| 2800, |
| 2900, |
| 3000, |
| 3100, |
| 3200, |
| 3300, |
| }; |
| |
| static const uint16_t ldo4_voltage_table[] = { |
| 3300, |
| }; |
| |
| static const uint16_t vref_ddr_voltage_table[] = { |
| 3300, |
| }; |
| |
| /* Table of Regulators in PMIC SoC */ |
| static const struct regul_struct regulators_table[] = { |
| { |
| .dt_node_name = "buck1", |
| .voltage_table = buck1_voltage_table, |
| .voltage_table_size = ARRAY_SIZE(buck1_voltage_table), |
| .control_reg = BUCK1_CONTROL_REG, |
| .low_power_reg = BUCK1_PWRCTRL_REG, |
| .pull_down_reg = BUCK_PULL_DOWN_REG, |
| .pull_down = BUCK1_PULL_DOWN_SHIFT, |
| .mask_reset_reg = MASK_RESET_BUCK_REG, |
| .mask_reset = BUCK1_MASK_RESET, |
| }, |
| { |
| .dt_node_name = "buck2", |
| .voltage_table = buck2_voltage_table, |
| .voltage_table_size = ARRAY_SIZE(buck2_voltage_table), |
| .control_reg = BUCK2_CONTROL_REG, |
| .low_power_reg = BUCK2_PWRCTRL_REG, |
| .pull_down_reg = BUCK_PULL_DOWN_REG, |
| .pull_down = BUCK2_PULL_DOWN_SHIFT, |
| .mask_reset_reg = MASK_RESET_BUCK_REG, |
| .mask_reset = BUCK2_MASK_RESET, |
| }, |
| { |
| .dt_node_name = "buck3", |
| .voltage_table = buck3_voltage_table, |
| .voltage_table_size = ARRAY_SIZE(buck3_voltage_table), |
| .control_reg = BUCK3_CONTROL_REG, |
| .low_power_reg = BUCK3_PWRCTRL_REG, |
| .pull_down_reg = BUCK_PULL_DOWN_REG, |
| .pull_down = BUCK3_PULL_DOWN_SHIFT, |
| .mask_reset_reg = MASK_RESET_BUCK_REG, |
| .mask_reset = BUCK3_MASK_RESET, |
| }, |
| { |
| .dt_node_name = "buck4", |
| .voltage_table = buck4_voltage_table, |
| .voltage_table_size = ARRAY_SIZE(buck4_voltage_table), |
| .control_reg = BUCK4_CONTROL_REG, |
| .low_power_reg = BUCK4_PWRCTRL_REG, |
| .pull_down_reg = BUCK_PULL_DOWN_REG, |
| .pull_down = BUCK4_PULL_DOWN_SHIFT, |
| .mask_reset_reg = MASK_RESET_BUCK_REG, |
| .mask_reset = BUCK4_MASK_RESET, |
| }, |
| { |
| .dt_node_name = "ldo1", |
| .voltage_table = ldo1_voltage_table, |
| .voltage_table_size = ARRAY_SIZE(ldo1_voltage_table), |
| .control_reg = LDO1_CONTROL_REG, |
| .low_power_reg = LDO1_PWRCTRL_REG, |
| .mask_reset_reg = MASK_RESET_LDO_REG, |
| .mask_reset = LDO1_MASK_RESET, |
| }, |
| { |
| .dt_node_name = "ldo2", |
| .voltage_table = ldo2_voltage_table, |
| .voltage_table_size = ARRAY_SIZE(ldo2_voltage_table), |
| .control_reg = LDO2_CONTROL_REG, |
| .low_power_reg = LDO2_PWRCTRL_REG, |
| .mask_reset_reg = MASK_RESET_LDO_REG, |
| .mask_reset = LDO2_MASK_RESET, |
| }, |
| { |
| .dt_node_name = "ldo3", |
| .voltage_table = ldo3_voltage_table, |
| .voltage_table_size = ARRAY_SIZE(ldo3_voltage_table), |
| .control_reg = LDO3_CONTROL_REG, |
| .low_power_reg = LDO3_PWRCTRL_REG, |
| .mask_reset_reg = MASK_RESET_LDO_REG, |
| .mask_reset = LDO3_MASK_RESET, |
| }, |
| { |
| .dt_node_name = "ldo4", |
| .voltage_table = ldo4_voltage_table, |
| .voltage_table_size = ARRAY_SIZE(ldo4_voltage_table), |
| .control_reg = LDO4_CONTROL_REG, |
| .low_power_reg = LDO4_PWRCTRL_REG, |
| .mask_reset_reg = MASK_RESET_LDO_REG, |
| .mask_reset = LDO4_MASK_RESET, |
| }, |
| { |
| .dt_node_name = "ldo5", |
| .voltage_table = ldo5_voltage_table, |
| .voltage_table_size = ARRAY_SIZE(ldo5_voltage_table), |
| .control_reg = LDO5_CONTROL_REG, |
| .low_power_reg = LDO5_PWRCTRL_REG, |
| .mask_reset_reg = MASK_RESET_LDO_REG, |
| .mask_reset = LDO5_MASK_RESET, |
| }, |
| { |
| .dt_node_name = "ldo6", |
| .voltage_table = ldo6_voltage_table, |
| .voltage_table_size = ARRAY_SIZE(ldo6_voltage_table), |
| .control_reg = LDO6_CONTROL_REG, |
| .low_power_reg = LDO6_PWRCTRL_REG, |
| .mask_reset_reg = MASK_RESET_LDO_REG, |
| .mask_reset = LDO6_MASK_RESET, |
| }, |
| { |
| .dt_node_name = "vref_ddr", |
| .voltage_table = vref_ddr_voltage_table, |
| .voltage_table_size = ARRAY_SIZE(vref_ddr_voltage_table), |
| .control_reg = VREF_DDR_CONTROL_REG, |
| .low_power_reg = VREF_DDR_PWRCTRL_REG, |
| .mask_reset_reg = MASK_RESET_LDO_REG, |
| .mask_reset = VREF_DDR_MASK_RESET, |
| }, |
| }; |
| |
| #define MAX_REGUL ARRAY_SIZE(regulators_table) |
| |
| static const struct regul_struct *get_regulator_data(const char *name) |
| { |
| uint8_t i; |
| |
| for (i = 0 ; i < MAX_REGUL ; i++) { |
| if (strncmp(name, regulators_table[i].dt_node_name, |
| strlen(regulators_table[i].dt_node_name)) == 0) { |
| return ®ulators_table[i]; |
| } |
| } |
| |
| /* Regulator not found */ |
| panic(); |
| return NULL; |
| } |
| |
| static uint8_t voltage_to_index(const char *name, uint16_t millivolts) |
| { |
| const struct regul_struct *regul = get_regulator_data(name); |
| uint8_t i; |
| |
| for (i = 0 ; i < regul->voltage_table_size ; i++) { |
| if (regul->voltage_table[i] == millivolts) { |
| return i; |
| } |
| } |
| |
| /* Voltage not found */ |
| panic(); |
| |
| return 0; |
| } |
| |
| int stpmic1_powerctrl_on(void) |
| { |
| return stpmic1_register_update(MAIN_CONTROL_REG, PWRCTRL_PIN_VALID, |
| PWRCTRL_PIN_VALID); |
| } |
| |
| int stpmic1_switch_off(void) |
| { |
| return stpmic1_register_update(MAIN_CONTROL_REG, 1, |
| SOFTWARE_SWITCH_OFF_ENABLED); |
| } |
| |
| int stpmic1_regulator_enable(const char *name) |
| { |
| const struct regul_struct *regul = get_regulator_data(name); |
| |
| return stpmic1_register_update(regul->control_reg, BIT(0), BIT(0)); |
| } |
| |
| int stpmic1_regulator_disable(const char *name) |
| { |
| const struct regul_struct *regul = get_regulator_data(name); |
| |
| return stpmic1_register_update(regul->control_reg, 0, BIT(0)); |
| } |
| |
| uint8_t stpmic1_is_regulator_enabled(const char *name) |
| { |
| uint8_t val; |
| const struct regul_struct *regul = get_regulator_data(name); |
| |
| if (stpmic1_register_read(regul->control_reg, &val) != 0) { |
| panic(); |
| } |
| |
| return (val & 0x1U); |
| } |
| |
| int stpmic1_regulator_voltage_set(const char *name, uint16_t millivolts) |
| { |
| uint8_t voltage_index = voltage_to_index(name, millivolts); |
| const struct regul_struct *regul = get_regulator_data(name); |
| uint8_t mask; |
| |
| /* Voltage can be set for buck<N> or ldo<N> (except ldo4) regulators */ |
| if (strncmp(name, "buck", 4) == 0) { |
| mask = BUCK_VOLTAGE_MASK; |
| } else if ((strncmp(name, "ldo", 3) == 0) && |
| (strncmp(name, "ldo4", 4) != 0)) { |
| mask = LDO_VOLTAGE_MASK; |
| } else { |
| return 0; |
| } |
| |
| return stpmic1_register_update(regul->control_reg, |
| voltage_index << LDO_BUCK_VOLTAGE_SHIFT, |
| mask); |
| } |
| |
| int stpmic1_regulator_pull_down_set(const char *name) |
| { |
| const struct regul_struct *regul = get_regulator_data(name); |
| |
| if (regul->pull_down_reg != 0) { |
| return stpmic1_register_update(regul->pull_down_reg, |
| BIT(regul->pull_down), |
| LDO_BUCK_PULL_DOWN_MASK << |
| regul->pull_down); |
| } |
| |
| return 0; |
| } |
| |
| int stpmic1_regulator_mask_reset_set(const char *name) |
| { |
| const struct regul_struct *regul = get_regulator_data(name); |
| |
| return stpmic1_register_update(regul->mask_reset_reg, |
| BIT(regul->mask_reset), |
| LDO_BUCK_RESET_MASK << |
| regul->mask_reset); |
| } |
| |
| int stpmic1_regulator_voltage_get(const char *name) |
| { |
| const struct regul_struct *regul = get_regulator_data(name); |
| uint8_t value; |
| uint8_t mask; |
| |
| /* Voltage can be set for buck<N> or ldo<N> (except ldo4) regulators */ |
| if (strncmp(name, "buck", 4) == 0) { |
| mask = BUCK_VOLTAGE_MASK; |
| } else if ((strncmp(name, "ldo", 3) == 0) && |
| (strncmp(name, "ldo4", 4) != 0)) { |
| mask = LDO_VOLTAGE_MASK; |
| } else { |
| return 0; |
| } |
| |
| if (stpmic1_register_read(regul->control_reg, &value)) |
| return -1; |
| |
| value = (value & mask) >> LDO_BUCK_VOLTAGE_SHIFT; |
| |
| if (value > regul->voltage_table_size) |
| return -1; |
| |
| return (int)regul->voltage_table[value]; |
| } |
| |
| int stpmic1_register_read(uint8_t register_id, uint8_t *value) |
| { |
| return stm32_i2c_mem_read(pmic_i2c_handle, pmic_i2c_addr, |
| (uint16_t)register_id, |
| I2C_MEMADD_SIZE_8BIT, value, |
| 1, I2C_TIMEOUT_MS); |
| } |
| |
| int stpmic1_register_write(uint8_t register_id, uint8_t value) |
| { |
| int status; |
| |
| status = stm32_i2c_mem_write(pmic_i2c_handle, pmic_i2c_addr, |
| (uint16_t)register_id, |
| I2C_MEMADD_SIZE_8BIT, &value, |
| 1, I2C_TIMEOUT_MS); |
| |
| #if ENABLE_ASSERTIONS |
| if (status != 0) { |
| return status; |
| } |
| |
| if ((register_id != WATCHDOG_CONTROL_REG) && (register_id <= 0x40U)) { |
| uint8_t readval; |
| |
| status = stpmic1_register_read(register_id, &readval); |
| if (status != 0) { |
| return status; |
| } |
| |
| if (readval != value) { |
| return -1; |
| } |
| } |
| #endif |
| |
| return status; |
| } |
| |
| int stpmic1_register_update(uint8_t register_id, uint8_t value, uint8_t mask) |
| { |
| int status; |
| uint8_t val; |
| |
| status = stpmic1_register_read(register_id, &val); |
| if (status != 0) { |
| return status; |
| } |
| |
| val = (val & ~mask) | (value & mask); |
| |
| return stpmic1_register_write(register_id, val); |
| } |
| |
| void stpmic1_bind_i2c(struct i2c_handle_s *i2c_handle, uint16_t i2c_addr) |
| { |
| pmic_i2c_handle = i2c_handle; |
| pmic_i2c_addr = i2c_addr; |
| } |
| |
| void stpmic1_dump_regulators(void) |
| { |
| uint32_t i; |
| |
| for (i = 0U; i < MAX_REGUL; i++) { |
| const char *name __unused = regulators_table[i].dt_node_name; |
| |
| VERBOSE("PMIC regul %s: %sable, %dmV", |
| name, |
| stpmic1_is_regulator_enabled(name) ? "en" : "dis", |
| stpmic1_regulator_voltage_get(name)); |
| } |
| } |
| |
| int stpmic1_get_version(unsigned long *version) |
| { |
| int rc; |
| uint8_t read_val; |
| |
| rc = stpmic1_register_read(VERSION_STATUS_REG, &read_val); |
| if (rc) { |
| return -1; |
| } |
| |
| *version = (unsigned long)read_val; |
| |
| return 0; |
| } |
