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1// SPDX-License-Identifier: GPL-2.0+2//3// max77693.c - mfd core driver for the MAX 776934//5// Copyright (C) 2012 Samsung Electronics6// SangYoung Son <hello.son@samsung.com>7//8// This program is not provided / owned by Maxim Integrated Products.9//10// This driver is based on max8997.c11 12#include <linux/module.h>13#include <linux/slab.h>14#include <linux/i2c.h>15#include <linux/err.h>16#include <linux/interrupt.h>17#include <linux/of.h>18#include <linux/pm_runtime.h>19#include <linux/mutex.h>20#include <linux/mfd/core.h>21#include <linux/mfd/max77693.h>22#include <linux/mfd/max77693-common.h>23#include <linux/mfd/max77693-private.h>24#include <linux/regulator/machine.h>25#include <linux/regmap.h>26 27#define I2C_ADDR_PMIC (0xCC >> 1) /* Charger, Flash LED */28#define I2C_ADDR_MUIC (0x4A >> 1)29#define I2C_ADDR_HAPTIC (0x90 >> 1)30 31static const struct mfd_cell max77693_devs[] = {32 { .name = "max77693-pmic", },33 {34 .name = "max77693-charger",35 .of_compatible = "maxim,max77693-charger",36 },37 {38 .name = "max77693-muic",39 .of_compatible = "maxim,max77693-muic",40 },41 {42 .name = "max77693-haptic",43 .of_compatible = "maxim,max77693-haptic",44 },45 {46 .name = "max77693-led",47 .of_compatible = "maxim,max77693-led",48 },49};50 51static const struct regmap_config max77693_regmap_config = {52 .reg_bits = 8,53 .val_bits = 8,54 .max_register = MAX77693_PMIC_REG_END,55};56 57static const struct regmap_irq max77693_led_irqs[] = {58 { .mask = LED_IRQ_FLED2_OPEN, },59 { .mask = LED_IRQ_FLED2_SHORT, },60 { .mask = LED_IRQ_FLED1_OPEN, },61 { .mask = LED_IRQ_FLED1_SHORT, },62 { .mask = LED_IRQ_MAX_FLASH, },63};64 65static const struct regmap_irq_chip max77693_led_irq_chip = {66 .name = "max77693-led",67 .status_base = MAX77693_LED_REG_FLASH_INT,68 .mask_base = MAX77693_LED_REG_FLASH_INT_MASK,69 .num_regs = 1,70 .irqs = max77693_led_irqs,71 .num_irqs = ARRAY_SIZE(max77693_led_irqs),72};73 74static const struct regmap_irq max77693_topsys_irqs[] = {75 { .mask = TOPSYS_IRQ_T120C_INT, },76 { .mask = TOPSYS_IRQ_T140C_INT, },77 { .mask = TOPSYS_IRQ_LOWSYS_INT, },78};79 80static const struct regmap_irq_chip max77693_topsys_irq_chip = {81 .name = "max77693-topsys",82 .status_base = MAX77693_PMIC_REG_TOPSYS_INT,83 .mask_base = MAX77693_PMIC_REG_TOPSYS_INT_MASK,84 .num_regs = 1,85 .irqs = max77693_topsys_irqs,86 .num_irqs = ARRAY_SIZE(max77693_topsys_irqs),87};88 89static const struct regmap_irq max77693_charger_irqs[] = {90 { .mask = CHG_IRQ_BYP_I, },91 { .mask = CHG_IRQ_THM_I, },92 { .mask = CHG_IRQ_BAT_I, },93 { .mask = CHG_IRQ_CHG_I, },94 { .mask = CHG_IRQ_CHGIN_I, },95};96 97static const struct regmap_irq_chip max77693_charger_irq_chip = {98 .name = "max77693-charger",99 .status_base = MAX77693_CHG_REG_CHG_INT,100 .mask_base = MAX77693_CHG_REG_CHG_INT_MASK,101 .num_regs = 1,102 .irqs = max77693_charger_irqs,103 .num_irqs = ARRAY_SIZE(max77693_charger_irqs),104};105 106static const struct regmap_config max77693_regmap_muic_config = {107 .reg_bits = 8,108 .val_bits = 8,109 .max_register = MAX77693_MUIC_REG_END,110};111 112static const struct regmap_irq max77693_muic_irqs[] = {113 { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC, },114 { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_LOW, },115 { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_ERR, },116 { .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC1K, },117 118 { .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGTYP, },119 { .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGDETREUN, },120 { .reg_offset = 1, .mask = MUIC_IRQ_INT2_DCDTMR, },121 { .reg_offset = 1, .mask = MUIC_IRQ_INT2_DXOVP, },122 { .reg_offset = 1, .mask = MUIC_IRQ_INT2_VBVOLT, },123 { .reg_offset = 1, .mask = MUIC_IRQ_INT2_VIDRM, },124 125 { .reg_offset = 2, .mask = MUIC_IRQ_INT3_EOC, },126 { .reg_offset = 2, .mask = MUIC_IRQ_INT3_CGMBC, },127 { .reg_offset = 2, .mask = MUIC_IRQ_INT3_OVP, },128 { .reg_offset = 2, .mask = MUIC_IRQ_INT3_MBCCHG_ERR, },129 { .reg_offset = 2, .mask = MUIC_IRQ_INT3_CHG_ENABLED, },130 { .reg_offset = 2, .mask = MUIC_IRQ_INT3_BAT_DET, },131};132 133static const struct regmap_irq_chip max77693_muic_irq_chip = {134 .name = "max77693-muic",135 .status_base = MAX77693_MUIC_REG_INT1,136 .unmask_base = MAX77693_MUIC_REG_INTMASK1,137 .num_regs = 3,138 .irqs = max77693_muic_irqs,139 .num_irqs = ARRAY_SIZE(max77693_muic_irqs),140};141 142static const struct regmap_config max77693_regmap_haptic_config = {143 .reg_bits = 8,144 .val_bits = 8,145 .max_register = MAX77693_HAPTIC_REG_END,146};147 148static int max77693_i2c_probe(struct i2c_client *i2c)149{150 const struct i2c_device_id *id = i2c_client_get_device_id(i2c);151 struct max77693_dev *max77693;152 unsigned int reg_data;153 int ret = 0;154 155 max77693 = devm_kzalloc(&i2c->dev,156 sizeof(struct max77693_dev), GFP_KERNEL);157 if (max77693 == NULL)158 return -ENOMEM;159 160 i2c_set_clientdata(i2c, max77693);161 max77693->dev = &i2c->dev;162 max77693->i2c = i2c;163 max77693->irq = i2c->irq;164 max77693->type = id->driver_data;165 166 max77693->regmap = devm_regmap_init_i2c(i2c, &max77693_regmap_config);167 if (IS_ERR(max77693->regmap)) {168 ret = PTR_ERR(max77693->regmap);169 dev_err(max77693->dev, "failed to allocate register map: %d\n",170 ret);171 return ret;172 }173 174 ret = regmap_read(max77693->regmap, MAX77693_PMIC_REG_PMIC_ID2,175 ®_data);176 if (ret < 0) {177 dev_err(max77693->dev, "device not found on this channel\n");178 return ret;179 } else180 dev_info(max77693->dev, "device ID: 0x%x\n", reg_data);181 182 max77693->i2c_muic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_MUIC);183 if (IS_ERR(max77693->i2c_muic)) {184 dev_err(max77693->dev, "Failed to allocate I2C device for MUIC\n");185 return PTR_ERR(max77693->i2c_muic);186 }187 i2c_set_clientdata(max77693->i2c_muic, max77693);188 189 max77693->i2c_haptic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_HAPTIC);190 if (IS_ERR(max77693->i2c_haptic)) {191 dev_err(max77693->dev, "Failed to allocate I2C device for Haptic\n");192 ret = PTR_ERR(max77693->i2c_haptic);193 goto err_i2c_haptic;194 }195 i2c_set_clientdata(max77693->i2c_haptic, max77693);196 197 max77693->regmap_haptic = devm_regmap_init_i2c(max77693->i2c_haptic,198 &max77693_regmap_haptic_config);199 if (IS_ERR(max77693->regmap_haptic)) {200 ret = PTR_ERR(max77693->regmap_haptic);201 dev_err(max77693->dev,202 "failed to initialize haptic register map: %d\n", ret);203 goto err_regmap;204 }205 206 /*207 * Initialize register map for MUIC device because use regmap-muic208 * instance of MUIC device when irq of max77693 is initialized209 * before call max77693-muic probe() function.210 */211 max77693->regmap_muic = devm_regmap_init_i2c(max77693->i2c_muic,212 &max77693_regmap_muic_config);213 if (IS_ERR(max77693->regmap_muic)) {214 ret = PTR_ERR(max77693->regmap_muic);215 dev_err(max77693->dev,216 "failed to allocate register map: %d\n", ret);217 goto err_regmap;218 }219 220 ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,221 IRQF_ONESHOT | IRQF_SHARED, 0,222 &max77693_led_irq_chip,223 &max77693->irq_data_led);224 if (ret) {225 dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);226 goto err_regmap;227 }228 229 ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,230 IRQF_ONESHOT | IRQF_SHARED, 0,231 &max77693_topsys_irq_chip,232 &max77693->irq_data_topsys);233 if (ret) {234 dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);235 goto err_irq_topsys;236 }237 238 ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,239 IRQF_ONESHOT | IRQF_SHARED, 0,240 &max77693_charger_irq_chip,241 &max77693->irq_data_chg);242 if (ret) {243 dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);244 goto err_irq_charger;245 }246 247 ret = regmap_add_irq_chip(max77693->regmap_muic, max77693->irq,248 IRQF_ONESHOT | IRQF_SHARED, 0,249 &max77693_muic_irq_chip,250 &max77693->irq_data_muic);251 if (ret) {252 dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);253 goto err_irq_muic;254 }255 256 /* Unmask interrupts from all blocks in interrupt source register */257 ret = regmap_update_bits(max77693->regmap,258 MAX77693_PMIC_REG_INTSRC_MASK,259 SRC_IRQ_ALL, (unsigned int)~SRC_IRQ_ALL);260 if (ret < 0) {261 dev_err(max77693->dev,262 "Could not unmask interrupts in INTSRC: %d\n",263 ret);264 goto err_intsrc;265 }266 267 pm_runtime_set_active(max77693->dev);268 269 ret = mfd_add_devices(max77693->dev, -1, max77693_devs,270 ARRAY_SIZE(max77693_devs), NULL, 0, NULL);271 if (ret < 0)272 goto err_mfd;273 274 return ret;275 276err_mfd:277 mfd_remove_devices(max77693->dev);278err_intsrc:279 regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic);280err_irq_muic:281 regmap_del_irq_chip(max77693->irq, max77693->irq_data_chg);282err_irq_charger:283 regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys);284err_irq_topsys:285 regmap_del_irq_chip(max77693->irq, max77693->irq_data_led);286err_regmap:287 i2c_unregister_device(max77693->i2c_haptic);288err_i2c_haptic:289 i2c_unregister_device(max77693->i2c_muic);290 return ret;291}292 293static void max77693_i2c_remove(struct i2c_client *i2c)294{295 struct max77693_dev *max77693 = i2c_get_clientdata(i2c);296 297 mfd_remove_devices(max77693->dev);298 299 regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic);300 regmap_del_irq_chip(max77693->irq, max77693->irq_data_chg);301 regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys);302 regmap_del_irq_chip(max77693->irq, max77693->irq_data_led);303 304 i2c_unregister_device(max77693->i2c_muic);305 i2c_unregister_device(max77693->i2c_haptic);306}307 308static const struct i2c_device_id max77693_i2c_id[] = {309 { "max77693", TYPE_MAX77693 },310 { }311};312MODULE_DEVICE_TABLE(i2c, max77693_i2c_id);313 314static int max77693_suspend(struct device *dev)315{316 struct i2c_client *i2c = to_i2c_client(dev);317 struct max77693_dev *max77693 = i2c_get_clientdata(i2c);318 319 if (device_may_wakeup(dev)) {320 enable_irq_wake(max77693->irq);321 disable_irq(max77693->irq);322 }323 324 return 0;325}326 327static int max77693_resume(struct device *dev)328{329 struct i2c_client *i2c = to_i2c_client(dev);330 struct max77693_dev *max77693 = i2c_get_clientdata(i2c);331 332 if (device_may_wakeup(dev)) {333 disable_irq_wake(max77693->irq);334 enable_irq(max77693->irq);335 }336 337 return 0;338}339 340static const struct dev_pm_ops max77693_pm = {341 .suspend = max77693_suspend,342 .resume = max77693_resume,343};344 345#ifdef CONFIG_OF346static const struct of_device_id max77693_dt_match[] = {347 { .compatible = "maxim,max77693" },348 {},349};350MODULE_DEVICE_TABLE(of, max77693_dt_match);351#endif352 353static struct i2c_driver max77693_i2c_driver = {354 .driver = {355 .name = "max77693",356 .pm = &max77693_pm,357 .of_match_table = of_match_ptr(max77693_dt_match),358 },359 .probe = max77693_i2c_probe,360 .remove = max77693_i2c_remove,361 .id_table = max77693_i2c_id,362};363 364module_i2c_driver(max77693_i2c_driver);365 366MODULE_DESCRIPTION("MAXIM 77693 multi-function core driver");367MODULE_AUTHOR("SangYoung, Son <hello.son@samsung.com>");368MODULE_LICENSE("GPL");369