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1// SPDX-License-Identifier: GPL-2.02//3// Driver for TPS65219 Integrated Power Management Integrated Chips (PMIC)4//5// Copyright (C) 2022 BayLibre Incorporated - https://www.baylibre.com/6 7#include <linux/i2c.h>8#include <linux/reboot.h>9#include <linux/regmap.h>10 11#include <linux/mfd/core.h>12#include <linux/mfd/tps65219.h>13 14static int tps65219_warm_reset(struct tps65219 *tps)15{16 return regmap_update_bits(tps->regmap, TPS65219_REG_MFP_CTRL,17 TPS65219_MFP_WARM_RESET_I2C_CTRL_MASK,18 TPS65219_MFP_WARM_RESET_I2C_CTRL_MASK);19}20 21static int tps65219_cold_reset(struct tps65219 *tps)22{23 return regmap_update_bits(tps->regmap, TPS65219_REG_MFP_CTRL,24 TPS65219_MFP_COLD_RESET_I2C_CTRL_MASK,25 TPS65219_MFP_COLD_RESET_I2C_CTRL_MASK);26}27 28static int tps65219_soft_shutdown(struct tps65219 *tps)29{30 return regmap_update_bits(tps->regmap, TPS65219_REG_MFP_CTRL,31 TPS65219_MFP_I2C_OFF_REQ_MASK,32 TPS65219_MFP_I2C_OFF_REQ_MASK);33}34 35static int tps65219_power_off_handler(struct sys_off_data *data)36{37 tps65219_soft_shutdown(data->cb_data);38 return NOTIFY_DONE;39}40 41static int tps65219_restart(struct tps65219 *tps, unsigned long reboot_mode)42{43 if (reboot_mode == REBOOT_WARM)44 tps65219_warm_reset(tps);45 else46 tps65219_cold_reset(tps);47 48 return NOTIFY_DONE;49}50 51static int tps65219_restart_handler(struct sys_off_data *data)52{53 tps65219_restart(data->cb_data, data->mode);54 return NOTIFY_DONE;55}56 57static const struct resource tps65219_pwrbutton_resources[] = {58 DEFINE_RES_IRQ_NAMED(TPS65219_INT_PB_FALLING_EDGE_DETECT, "falling"),59 DEFINE_RES_IRQ_NAMED(TPS65219_INT_PB_RISING_EDGE_DETECT, "rising"),60};61 62static const struct resource tps65219_regulator_resources[] = {63 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_SCG, "LDO3_SCG"),64 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_OC, "LDO3_OC"),65 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_UV, "LDO3_UV"),66 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_SCG, "LDO4_SCG"),67 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_OC, "LDO4_OC"),68 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_UV, "LDO4_UV"),69 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_SCG, "LDO1_SCG"),70 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_OC, "LDO1_OC"),71 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_UV, "LDO1_UV"),72 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_SCG, "LDO2_SCG"),73 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_OC, "LDO2_OC"),74 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_UV, "LDO2_UV"),75 DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_SCG, "BUCK3_SCG"),76 DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_OC, "BUCK3_OC"),77 DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_NEG_OC, "BUCK3_NEG_OC"),78 DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_UV, "BUCK3_UV"),79 DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_SCG, "BUCK1_SCG"),80 DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_OC, "BUCK1_OC"),81 DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_NEG_OC, "BUCK1_NEG_OC"),82 DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_UV, "BUCK1_UV"),83 DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_SCG, "BUCK2_SCG"),84 DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_OC, "BUCK2_OC"),85 DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_NEG_OC, "BUCK2_NEG_OC"),86 DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_UV, "BUCK2_UV"),87 DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_RV, "BUCK1_RV"),88 DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_RV, "BUCK2_RV"),89 DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_RV, "BUCK3_RV"),90 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_RV, "LDO1_RV"),91 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_RV, "LDO2_RV"),92 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_RV, "LDO3_RV"),93 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_RV, "LDO4_RV"),94 DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK1_RV_SD, "BUCK1_RV_SD"),95 DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK2_RV_SD, "BUCK2_RV_SD"),96 DEFINE_RES_IRQ_NAMED(TPS65219_INT_BUCK3_RV_SD, "BUCK3_RV_SD"),97 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO1_RV_SD, "LDO1_RV_SD"),98 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO2_RV_SD, "LDO2_RV_SD"),99 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO3_RV_SD, "LDO3_RV_SD"),100 DEFINE_RES_IRQ_NAMED(TPS65219_INT_LDO4_RV_SD, "LDO4_RV_SD"),101 DEFINE_RES_IRQ_NAMED(TPS65219_INT_TIMEOUT, "TIMEOUT"),102 DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_3_WARM, "SENSOR_3_WARM"),103 DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_2_WARM, "SENSOR_2_WARM"),104 DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_1_WARM, "SENSOR_1_WARM"),105 DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_0_WARM, "SENSOR_0_WARM"),106 DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_3_HOT, "SENSOR_3_HOT"),107 DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_2_HOT, "SENSOR_2_HOT"),108 DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_1_HOT, "SENSOR_1_HOT"),109 DEFINE_RES_IRQ_NAMED(TPS65219_INT_SENSOR_0_HOT, "SENSOR_0_HOT"),110};111 112static const struct mfd_cell tps65219_cells[] = {113 {114 .name = "tps65219-regulator",115 .resources = tps65219_regulator_resources,116 .num_resources = ARRAY_SIZE(tps65219_regulator_resources),117 },118 { .name = "tps65219-gpio", },119};120 121static const struct mfd_cell tps65219_pwrbutton_cell = {122 .name = "tps65219-pwrbutton",123 .resources = tps65219_pwrbutton_resources,124 .num_resources = ARRAY_SIZE(tps65219_pwrbutton_resources),125};126 127static const struct regmap_config tps65219_regmap_config = {128 .reg_bits = 8,129 .val_bits = 8,130 .max_register = TPS65219_REG_FACTORY_CONFIG_2,131};132 133/*134 * Mapping of main IRQ register bits to sub-IRQ register offsets so that we can135 * access corect sub-IRQ registers based on bits that are set in main IRQ136 * register.137 */138/* Timeout Residual Voltage Shutdown */139static unsigned int bit0_offsets[] = { TPS65219_REG_INT_TO_RV_POS };140static unsigned int bit1_offsets[] = { TPS65219_REG_INT_RV_POS }; /* Residual Voltage */141static unsigned int bit2_offsets[] = { TPS65219_REG_INT_SYS_POS }; /* System */142static unsigned int bit3_offsets[] = { TPS65219_REG_INT_BUCK_1_2_POS }; /* Buck 1-2 */143static unsigned int bit4_offsets[] = { TPS65219_REG_INT_BUCK_3_POS }; /* Buck 3 */144static unsigned int bit5_offsets[] = { TPS65219_REG_INT_LDO_1_2_POS }; /* LDO 1-2 */145static unsigned int bit6_offsets[] = { TPS65219_REG_INT_LDO_3_4_POS }; /* LDO 3-4 */146static unsigned int bit7_offsets[] = { TPS65219_REG_INT_PB_POS }; /* Power Button */147 148static struct regmap_irq_sub_irq_map tps65219_sub_irq_offsets[] = {149 REGMAP_IRQ_MAIN_REG_OFFSET(bit0_offsets),150 REGMAP_IRQ_MAIN_REG_OFFSET(bit1_offsets),151 REGMAP_IRQ_MAIN_REG_OFFSET(bit2_offsets),152 REGMAP_IRQ_MAIN_REG_OFFSET(bit3_offsets),153 REGMAP_IRQ_MAIN_REG_OFFSET(bit4_offsets),154 REGMAP_IRQ_MAIN_REG_OFFSET(bit5_offsets),155 REGMAP_IRQ_MAIN_REG_OFFSET(bit6_offsets),156 REGMAP_IRQ_MAIN_REG_OFFSET(bit7_offsets),157};158 159#define TPS65219_REGMAP_IRQ_REG(int_name, register_position) \160 REGMAP_IRQ_REG(int_name, register_position, int_name##_MASK)161 162static const struct regmap_irq tps65219_irqs[] = {163 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_SCG, TPS65219_REG_INT_LDO_3_4_POS),164 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_OC, TPS65219_REG_INT_LDO_3_4_POS),165 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_UV, TPS65219_REG_INT_LDO_3_4_POS),166 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_SCG, TPS65219_REG_INT_LDO_3_4_POS),167 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_OC, TPS65219_REG_INT_LDO_3_4_POS),168 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_UV, TPS65219_REG_INT_LDO_3_4_POS),169 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_SCG, TPS65219_REG_INT_LDO_1_2_POS),170 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_OC, TPS65219_REG_INT_LDO_1_2_POS),171 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_UV, TPS65219_REG_INT_LDO_1_2_POS),172 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_SCG, TPS65219_REG_INT_LDO_1_2_POS),173 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_OC, TPS65219_REG_INT_LDO_1_2_POS),174 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_UV, TPS65219_REG_INT_LDO_1_2_POS),175 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_SCG, TPS65219_REG_INT_BUCK_3_POS),176 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_OC, TPS65219_REG_INT_BUCK_3_POS),177 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_NEG_OC, TPS65219_REG_INT_BUCK_3_POS),178 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_UV, TPS65219_REG_INT_BUCK_3_POS),179 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_SCG, TPS65219_REG_INT_BUCK_1_2_POS),180 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_OC, TPS65219_REG_INT_BUCK_1_2_POS),181 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_NEG_OC, TPS65219_REG_INT_BUCK_1_2_POS),182 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_UV, TPS65219_REG_INT_BUCK_1_2_POS),183 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_SCG, TPS65219_REG_INT_BUCK_1_2_POS),184 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_OC, TPS65219_REG_INT_BUCK_1_2_POS),185 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_NEG_OC, TPS65219_REG_INT_BUCK_1_2_POS),186 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_UV, TPS65219_REG_INT_BUCK_1_2_POS),187 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_3_WARM, TPS65219_REG_INT_SYS_POS),188 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_2_WARM, TPS65219_REG_INT_SYS_POS),189 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_1_WARM, TPS65219_REG_INT_SYS_POS),190 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_0_WARM, TPS65219_REG_INT_SYS_POS),191 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_3_HOT, TPS65219_REG_INT_SYS_POS),192 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_2_HOT, TPS65219_REG_INT_SYS_POS),193 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_1_HOT, TPS65219_REG_INT_SYS_POS),194 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_SENSOR_0_HOT, TPS65219_REG_INT_SYS_POS),195 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_RV, TPS65219_REG_INT_RV_POS),196 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_RV, TPS65219_REG_INT_RV_POS),197 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_RV, TPS65219_REG_INT_RV_POS),198 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_RV, TPS65219_REG_INT_RV_POS),199 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_RV, TPS65219_REG_INT_RV_POS),200 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_RV, TPS65219_REG_INT_RV_POS),201 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_RV, TPS65219_REG_INT_RV_POS),202 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK1_RV_SD, TPS65219_REG_INT_TO_RV_POS),203 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK2_RV_SD, TPS65219_REG_INT_TO_RV_POS),204 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_BUCK3_RV_SD, TPS65219_REG_INT_TO_RV_POS),205 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO1_RV_SD, TPS65219_REG_INT_TO_RV_POS),206 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO2_RV_SD, TPS65219_REG_INT_TO_RV_POS),207 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO3_RV_SD, TPS65219_REG_INT_TO_RV_POS),208 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_LDO4_RV_SD, TPS65219_REG_INT_TO_RV_POS),209 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_TIMEOUT, TPS65219_REG_INT_TO_RV_POS),210 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_PB_FALLING_EDGE_DETECT, TPS65219_REG_INT_PB_POS),211 TPS65219_REGMAP_IRQ_REG(TPS65219_INT_PB_RISING_EDGE_DETECT, TPS65219_REG_INT_PB_POS),212};213 214static const struct regmap_irq_chip tps65219_irq_chip = {215 .name = "tps65219_irq",216 .main_status = TPS65219_REG_INT_SOURCE,217 .num_main_regs = 1,218 .num_main_status_bits = 8,219 .irqs = tps65219_irqs,220 .num_irqs = ARRAY_SIZE(tps65219_irqs),221 .status_base = TPS65219_REG_INT_LDO_3_4,222 .ack_base = TPS65219_REG_INT_LDO_3_4,223 .clear_ack = 1,224 .num_regs = 8,225 .sub_reg_offsets = tps65219_sub_irq_offsets,226};227 228static int tps65219_probe(struct i2c_client *client)229{230 struct tps65219 *tps;231 unsigned int chipid;232 bool pwr_button;233 int ret;234 235 tps = devm_kzalloc(&client->dev, sizeof(*tps), GFP_KERNEL);236 if (!tps)237 return -ENOMEM;238 239 i2c_set_clientdata(client, tps);240 241 tps->dev = &client->dev;242 243 tps->regmap = devm_regmap_init_i2c(client, &tps65219_regmap_config);244 if (IS_ERR(tps->regmap)) {245 ret = PTR_ERR(tps->regmap);246 dev_err(tps->dev, "Failed to allocate register map: %d\n", ret);247 return ret;248 }249 250 ret = devm_regmap_add_irq_chip(&client->dev, tps->regmap, client->irq,251 IRQF_ONESHOT, 0, &tps65219_irq_chip,252 &tps->irq_data);253 if (ret)254 return ret;255 256 ret = regmap_read(tps->regmap, TPS65219_REG_TI_DEV_ID, &chipid);257 if (ret) {258 dev_err(tps->dev, "Failed to read device ID: %d\n", ret);259 return ret;260 }261 262 ret = devm_mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO,263 tps65219_cells, ARRAY_SIZE(tps65219_cells),264 NULL, 0, regmap_irq_get_domain(tps->irq_data));265 if (ret) {266 dev_err(tps->dev, "Failed to add child devices: %d\n", ret);267 return ret;268 }269 270 pwr_button = of_property_read_bool(tps->dev->of_node, "ti,power-button");271 if (pwr_button) {272 ret = devm_mfd_add_devices(tps->dev, PLATFORM_DEVID_AUTO,273 &tps65219_pwrbutton_cell, 1, NULL, 0,274 regmap_irq_get_domain(tps->irq_data));275 if (ret) {276 dev_err(tps->dev, "Failed to add power-button: %d\n", ret);277 return ret;278 }279 }280 281 ret = devm_register_restart_handler(tps->dev,282 tps65219_restart_handler,283 tps);284 285 if (ret) {286 dev_err(tps->dev, "cannot register restart handler, %d\n", ret);287 return ret;288 }289 290 ret = devm_register_power_off_handler(tps->dev,291 tps65219_power_off_handler,292 tps);293 if (ret) {294 dev_err(tps->dev, "failed to register power-off handler: %d\n", ret);295 return ret;296 }297 return 0;298}299 300static const struct of_device_id of_tps65219_match_table[] = {301 { .compatible = "ti,tps65219", },302 {}303};304MODULE_DEVICE_TABLE(of, of_tps65219_match_table);305 306static struct i2c_driver tps65219_driver = {307 .driver = {308 .name = "tps65219",309 .of_match_table = of_tps65219_match_table,310 },311 .probe = tps65219_probe,312};313module_i2c_driver(tps65219_driver);314 315MODULE_AUTHOR("Jerome Neanne <jneanne@baylibre.com>");316MODULE_DESCRIPTION("TPS65219 power management IC driver");317MODULE_LICENSE("GPL");318