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