2023-04-12 19:12:46 +08:00
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2022 Analog Devices, Inc.
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* Driver for the MAX77540 and MAX77541
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*/
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#include <linux/i2c.h>
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#include <linux/interrupt.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/max77541.h>
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#include <linux/property.h>
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#include <linux/regmap.h>
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static const struct regmap_config max77541_regmap_config = {
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.reg_bits = 8,
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.val_bits = 8,
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};
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static const struct regmap_irq max77541_src_irqs[] = {
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{ .mask = MAX77541_BIT_INT_SRC_TOPSYS },
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{ .mask = MAX77541_BIT_INT_SRC_BUCK },
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};
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static const struct regmap_irq_chip max77541_src_irq_chip = {
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.name = "max77541-src",
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.status_base = MAX77541_REG_INT_SRC,
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.mask_base = MAX77541_REG_INT_SRC_M,
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.num_regs = 1,
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.irqs = max77541_src_irqs,
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.num_irqs = ARRAY_SIZE(max77541_src_irqs),
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};
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static const struct regmap_irq max77541_topsys_irqs[] = {
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{ .mask = MAX77541_BIT_TOPSYS_INT_TJ_120C },
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{ .mask = MAX77541_BIT_TOPSYS_INT_TJ_140C },
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{ .mask = MAX77541_BIT_TOPSYS_INT_TSHDN },
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{ .mask = MAX77541_BIT_TOPSYS_INT_UVLO },
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{ .mask = MAX77541_BIT_TOPSYS_INT_ALT_SWO },
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{ .mask = MAX77541_BIT_TOPSYS_INT_EXT_FREQ_DET },
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};
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static const struct regmap_irq_chip max77541_topsys_irq_chip = {
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.name = "max77541-topsys",
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.status_base = MAX77541_REG_TOPSYS_INT,
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.mask_base = MAX77541_REG_TOPSYS_INT_M,
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.num_regs = 1,
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.irqs = max77541_topsys_irqs,
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.num_irqs = ARRAY_SIZE(max77541_topsys_irqs),
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};
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static const struct regmap_irq max77541_buck_irqs[] = {
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{ .mask = MAX77541_BIT_BUCK_INT_M1_POK_FLT },
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{ .mask = MAX77541_BIT_BUCK_INT_M2_POK_FLT },
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{ .mask = MAX77541_BIT_BUCK_INT_M1_SCFLT },
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{ .mask = MAX77541_BIT_BUCK_INT_M2_SCFLT },
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};
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static const struct regmap_irq_chip max77541_buck_irq_chip = {
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.name = "max77541-buck",
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.status_base = MAX77541_REG_BUCK_INT,
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.mask_base = MAX77541_REG_BUCK_INT_M,
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.num_regs = 1,
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.irqs = max77541_buck_irqs,
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.num_irqs = ARRAY_SIZE(max77541_buck_irqs),
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};
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static const struct regmap_irq max77541_adc_irqs[] = {
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{ .mask = MAX77541_BIT_ADC_INT_CH1_I },
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{ .mask = MAX77541_BIT_ADC_INT_CH2_I },
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{ .mask = MAX77541_BIT_ADC_INT_CH3_I },
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{ .mask = MAX77541_BIT_ADC_INT_CH6_I },
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};
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static const struct regmap_irq_chip max77541_adc_irq_chip = {
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.name = "max77541-adc",
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.status_base = MAX77541_REG_ADC_INT,
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.mask_base = MAX77541_REG_ADC_INT_M,
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.num_regs = 1,
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.irqs = max77541_adc_irqs,
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.num_irqs = ARRAY_SIZE(max77541_adc_irqs),
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};
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static const struct mfd_cell max77540_devs[] = {
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MFD_CELL_OF("max77540-regulator", NULL, NULL, 0, 0, NULL),
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};
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static const struct mfd_cell max77541_devs[] = {
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MFD_CELL_OF("max77541-regulator", NULL, NULL, 0, 0, NULL),
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MFD_CELL_OF("max77541-adc", NULL, NULL, 0, 0, NULL),
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};
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static int max77541_pmic_irq_init(struct device *dev)
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{
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struct max77541 *max77541 = dev_get_drvdata(dev);
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int irq = max77541->i2c->irq;
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int ret;
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ret = devm_regmap_add_irq_chip(dev, max77541->regmap, irq,
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IRQF_ONESHOT | IRQF_SHARED, 0,
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&max77541_src_irq_chip,
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&max77541->irq_data);
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if (ret)
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return ret;
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ret = devm_regmap_add_irq_chip(dev, max77541->regmap, irq,
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IRQF_ONESHOT | IRQF_SHARED, 0,
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&max77541_topsys_irq_chip,
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&max77541->irq_topsys);
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if (ret)
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return ret;
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ret = devm_regmap_add_irq_chip(dev, max77541->regmap, irq,
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IRQF_ONESHOT | IRQF_SHARED, 0,
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&max77541_buck_irq_chip,
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&max77541->irq_buck);
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if (ret)
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return ret;
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if (max77541->id == MAX77541) {
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ret = devm_regmap_add_irq_chip(dev, max77541->regmap, irq,
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IRQF_ONESHOT | IRQF_SHARED, 0,
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&max77541_adc_irq_chip,
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&max77541->irq_adc);
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if (ret)
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return ret;
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}
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return 0;
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}
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static int max77541_pmic_setup(struct device *dev)
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{
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struct max77541 *max77541 = dev_get_drvdata(dev);
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const struct mfd_cell *cells;
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int n_devs;
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int ret;
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switch (max77541->id) {
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case MAX77540:
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cells = max77540_devs;
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n_devs = ARRAY_SIZE(max77540_devs);
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break;
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case MAX77541:
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cells = max77541_devs;
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n_devs = ARRAY_SIZE(max77541_devs);
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break;
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default:
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return -EINVAL;
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}
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ret = max77541_pmic_irq_init(dev);
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if (ret)
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return dev_err_probe(dev, ret, "Failed to initialize IRQ\n");
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ret = device_init_wakeup(dev, true);
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if (ret)
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return dev_err_probe(dev, ret, "Unable to init wakeup\n");
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return devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE,
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cells, n_devs, NULL, 0, NULL);
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}
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static int max77541_probe(struct i2c_client *client)
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{
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const struct i2c_device_id *id = i2c_client_get_device_id(client);
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struct device *dev = &client->dev;
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struct max77541 *max77541;
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max77541 = devm_kzalloc(dev, sizeof(*max77541), GFP_KERNEL);
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if (!max77541)
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return -ENOMEM;
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i2c_set_clientdata(client, max77541);
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max77541->i2c = client;
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2023-08-10 17:58:43 +08:00
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max77541->id = (uintptr_t)device_get_match_data(dev);
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2023-04-12 19:12:46 +08:00
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if (!max77541->id)
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max77541->id = (enum max7754x_ids)id->driver_data;
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if (!max77541->id)
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return -EINVAL;
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max77541->regmap = devm_regmap_init_i2c(client,
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&max77541_regmap_config);
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if (IS_ERR(max77541->regmap))
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return dev_err_probe(dev, PTR_ERR(max77541->regmap),
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"Failed to allocate register map\n");
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return max77541_pmic_setup(dev);
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}
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static const struct of_device_id max77541_of_id[] = {
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{
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.compatible = "adi,max77540",
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.data = (void *)MAX77540,
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},
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{
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.compatible = "adi,max77541",
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.data = (void *)MAX77541,
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},
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{ }
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};
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MODULE_DEVICE_TABLE(of, max77541_of_id);
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static const struct i2c_device_id max77541_id[] = {
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{ "max77540", MAX77540 },
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{ "max77541", MAX77541 },
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, max77541_id);
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static struct i2c_driver max77541_driver = {
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.driver = {
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.name = "max77541",
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.of_match_table = max77541_of_id,
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},
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2023-06-26 17:19:41 +08:00
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.probe = max77541_probe,
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2023-04-12 19:12:46 +08:00
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.id_table = max77541_id,
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};
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module_i2c_driver(max77541_driver);
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MODULE_DESCRIPTION("MAX7740/MAX7741 Driver");
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MODULE_AUTHOR("Okan Sahin <okan.sahin@analog.com>");
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MODULE_LICENSE("GPL");
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