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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Copyright (c) 2022 Analog Devices, Inc.4 * Driver for the MAX77540 and MAX775415 */6 7#include <linux/i2c.h>8#include <linux/interrupt.h>9#include <linux/mfd/core.h>10#include <linux/mfd/max77541.h>11#include <linux/property.h>12#include <linux/regmap.h>13 14static const struct regmap_config max77541_regmap_config = {15 .reg_bits = 8,16 .val_bits = 8,17};18 19static const struct regmap_irq max77541_src_irqs[] = {20 { .mask = MAX77541_BIT_INT_SRC_TOPSYS },21 { .mask = MAX77541_BIT_INT_SRC_BUCK },22};23 24static const struct regmap_irq_chip max77541_src_irq_chip = {25 .name = "max77541-src",26 .status_base = MAX77541_REG_INT_SRC,27 .mask_base = MAX77541_REG_INT_SRC_M,28 .num_regs = 1,29 .irqs = max77541_src_irqs,30 .num_irqs = ARRAY_SIZE(max77541_src_irqs),31};32 33static const struct regmap_irq max77541_topsys_irqs[] = {34 { .mask = MAX77541_BIT_TOPSYS_INT_TJ_120C },35 { .mask = MAX77541_BIT_TOPSYS_INT_TJ_140C },36 { .mask = MAX77541_BIT_TOPSYS_INT_TSHDN },37 { .mask = MAX77541_BIT_TOPSYS_INT_UVLO },38 { .mask = MAX77541_BIT_TOPSYS_INT_ALT_SWO },39 { .mask = MAX77541_BIT_TOPSYS_INT_EXT_FREQ_DET },40};41 42static const struct regmap_irq_chip max77541_topsys_irq_chip = {43 .name = "max77541-topsys",44 .status_base = MAX77541_REG_TOPSYS_INT,45 .mask_base = MAX77541_REG_TOPSYS_INT_M,46 .num_regs = 1,47 .irqs = max77541_topsys_irqs,48 .num_irqs = ARRAY_SIZE(max77541_topsys_irqs),49};50 51static const struct regmap_irq max77541_buck_irqs[] = {52 { .mask = MAX77541_BIT_BUCK_INT_M1_POK_FLT },53 { .mask = MAX77541_BIT_BUCK_INT_M2_POK_FLT },54 { .mask = MAX77541_BIT_BUCK_INT_M1_SCFLT },55 { .mask = MAX77541_BIT_BUCK_INT_M2_SCFLT },56};57 58static const struct regmap_irq_chip max77541_buck_irq_chip = {59 .name = "max77541-buck",60 .status_base = MAX77541_REG_BUCK_INT,61 .mask_base = MAX77541_REG_BUCK_INT_M,62 .num_regs = 1,63 .irqs = max77541_buck_irqs,64 .num_irqs = ARRAY_SIZE(max77541_buck_irqs),65};66 67static const struct regmap_irq max77541_adc_irqs[] = {68 { .mask = MAX77541_BIT_ADC_INT_CH1_I },69 { .mask = MAX77541_BIT_ADC_INT_CH2_I },70 { .mask = MAX77541_BIT_ADC_INT_CH3_I },71 { .mask = MAX77541_BIT_ADC_INT_CH6_I },72};73 74static const struct regmap_irq_chip max77541_adc_irq_chip = {75 .name = "max77541-adc",76 .status_base = MAX77541_REG_ADC_INT,77 .mask_base = MAX77541_REG_ADC_INT_M,78 .num_regs = 1,79 .irqs = max77541_adc_irqs,80 .num_irqs = ARRAY_SIZE(max77541_adc_irqs),81};82 83static const struct mfd_cell max77540_devs[] = {84 MFD_CELL_OF("max77540-regulator", NULL, NULL, 0, 0, NULL),85};86 87static const struct mfd_cell max77541_devs[] = {88 MFD_CELL_OF("max77541-regulator", NULL, NULL, 0, 0, NULL),89 MFD_CELL_OF("max77541-adc", NULL, NULL, 0, 0, NULL),90};91 92static int max77541_pmic_irq_init(struct device *dev)93{94 struct max77541 *max77541 = dev_get_drvdata(dev);95 int irq = max77541->i2c->irq;96 int ret;97 98 ret = devm_regmap_add_irq_chip(dev, max77541->regmap, irq,99 IRQF_ONESHOT | IRQF_SHARED, 0,100 &max77541_src_irq_chip,101 &max77541->irq_data);102 if (ret)103 return ret;104 105 ret = devm_regmap_add_irq_chip(dev, max77541->regmap, irq,106 IRQF_ONESHOT | IRQF_SHARED, 0,107 &max77541_topsys_irq_chip,108 &max77541->irq_topsys);109 if (ret)110 return ret;111 112 ret = devm_regmap_add_irq_chip(dev, max77541->regmap, irq,113 IRQF_ONESHOT | IRQF_SHARED, 0,114 &max77541_buck_irq_chip,115 &max77541->irq_buck);116 if (ret)117 return ret;118 119 if (max77541->id == MAX77541) {120 ret = devm_regmap_add_irq_chip(dev, max77541->regmap, irq,121 IRQF_ONESHOT | IRQF_SHARED, 0,122 &max77541_adc_irq_chip,123 &max77541->irq_adc);124 if (ret)125 return ret;126 }127 128 return 0;129}130 131static int max77541_pmic_setup(struct device *dev)132{133 struct max77541 *max77541 = dev_get_drvdata(dev);134 const struct mfd_cell *cells;135 int n_devs;136 int ret;137 138 switch (max77541->id) {139 case MAX77540:140 cells = max77540_devs;141 n_devs = ARRAY_SIZE(max77540_devs);142 break;143 case MAX77541:144 cells = max77541_devs;145 n_devs = ARRAY_SIZE(max77541_devs);146 break;147 default:148 return -EINVAL;149 }150 151 ret = max77541_pmic_irq_init(dev);152 if (ret)153 return dev_err_probe(dev, ret, "Failed to initialize IRQ\n");154 155 ret = device_init_wakeup(dev, true);156 if (ret)157 return dev_err_probe(dev, ret, "Unable to init wakeup\n");158 159 return devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE,160 cells, n_devs, NULL, 0, NULL);161}162 163static int max77541_probe(struct i2c_client *client)164{165 struct device *dev = &client->dev;166 struct max77541 *max77541;167 168 max77541 = devm_kzalloc(dev, sizeof(*max77541), GFP_KERNEL);169 if (!max77541)170 return -ENOMEM;171 172 i2c_set_clientdata(client, max77541);173 max77541->i2c = client;174 175 max77541->id = (uintptr_t)i2c_get_match_data(client);176 if (!max77541->id)177 return -EINVAL;178 179 max77541->regmap = devm_regmap_init_i2c(client,180 &max77541_regmap_config);181 if (IS_ERR(max77541->regmap))182 return dev_err_probe(dev, PTR_ERR(max77541->regmap),183 "Failed to allocate register map\n");184 185 return max77541_pmic_setup(dev);186}187 188static const struct of_device_id max77541_of_id[] = {189 {190 .compatible = "adi,max77540",191 .data = (void *)MAX77540,192 },193 {194 .compatible = "adi,max77541",195 .data = (void *)MAX77541,196 },197 { }198};199MODULE_DEVICE_TABLE(of, max77541_of_id);200 201static const struct i2c_device_id max77541_id[] = {202 { "max77540", MAX77540 },203 { "max77541", MAX77541 },204 { }205};206MODULE_DEVICE_TABLE(i2c, max77541_id);207 208static struct i2c_driver max77541_driver = {209 .driver = {210 .name = "max77541",211 .of_match_table = max77541_of_id,212 },213 .probe = max77541_probe,214 .id_table = max77541_id,215};216module_i2c_driver(max77541_driver);217 218MODULE_DESCRIPTION("MAX7740/MAX7741 Driver");219MODULE_AUTHOR("Okan Sahin <okan.sahin@analog.com>");220MODULE_LICENSE("GPL");221