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linux-stable/drivers/mfd/max8997.c
Rob Herring dc0c386e09 mfd: Explicitly include correct DT includes 
The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it as merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20230714174731.4059811-1-robh@kernel.org
Signed-off-by: Lee Jones <lee@kernel.org>
2023-08-18 21:48:03 +01:00

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// SPDX-License-Identifier: GPL-2.0+
//
// max8997.c - mfd core driver for the Maxim 8966 and 8997
//
// Copyright (C) 2011 Samsung Electronics
// MyungJoo Ham <myungjoo.ham@samsung.com>
//
// This driver is based on max8998.c
#include <linux/err.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/interrupt.h>
#include <linux/pm_runtime.h>
#include <linux/init.h>
#include <linux/mutex.h>
#include <linux/mfd/core.h>
#include <linux/mfd/max8997.h>
#include <linux/mfd/max8997-private.h>
#define I2C_ADDR_PMIC (0xCC >> 1)
#define I2C_ADDR_MUIC (0x4A >> 1)
#define I2C_ADDR_BATTERY (0x6C >> 1)
#define I2C_ADDR_RTC (0x0C >> 1)
#define I2C_ADDR_HAPTIC (0x90 >> 1)
static const struct mfd_cell max8997_devs[] = {
{ .name = "max8997-pmic", },
{ .name = "max8997-rtc", },
{ .name = "max8997-battery", },
{ .name = "max8997-haptic", },
{ .name = "max8997-muic", },
{ .name = "max8997-led", .id = 1 },
{ .name = "max8997-led", .id = 2 },
};
#ifdef CONFIG_OF
static const struct of_device_id max8997_pmic_dt_match[] = {
{ .compatible = "maxim,max8997-pmic", .data = (void *)TYPE_MAX8997 },
{},
};
#endif
int max8997_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest)
{
struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
int ret;
mutex_lock(&max8997->iolock);
ret = i2c_smbus_read_byte_data(i2c, reg);
mutex_unlock(&max8997->iolock);
if (ret < 0)
return ret;
ret &= 0xff;
*dest = ret;
return 0;
}
EXPORT_SYMBOL_GPL(max8997_read_reg);
int max8997_bulk_read(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
{
struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
int ret;
mutex_lock(&max8997->iolock);
ret = i2c_smbus_read_i2c_block_data(i2c, reg, count, buf);
mutex_unlock(&max8997->iolock);
if (ret < 0)
return ret;
return 0;
}
EXPORT_SYMBOL_GPL(max8997_bulk_read);
int max8997_write_reg(struct i2c_client *i2c, u8 reg, u8 value)
{
struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
int ret;
mutex_lock(&max8997->iolock);
ret = i2c_smbus_write_byte_data(i2c, reg, value);
mutex_unlock(&max8997->iolock);
return ret;
}
EXPORT_SYMBOL_GPL(max8997_write_reg);
int max8997_bulk_write(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
{
struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
int ret;
mutex_lock(&max8997->iolock);
ret = i2c_smbus_write_i2c_block_data(i2c, reg, count, buf);
mutex_unlock(&max8997->iolock);
if (ret < 0)
return ret;
return 0;
}
EXPORT_SYMBOL_GPL(max8997_bulk_write);
int max8997_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask)
{
struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
int ret;
mutex_lock(&max8997->iolock);
ret = i2c_smbus_read_byte_data(i2c, reg);
if (ret >= 0) {
u8 old_val = ret & 0xff;
u8 new_val = (val & mask) | (old_val & (~mask));
ret = i2c_smbus_write_byte_data(i2c, reg, new_val);
}
mutex_unlock(&max8997->iolock);
return ret;
}
EXPORT_SYMBOL_GPL(max8997_update_reg);
/*
* Only the common platform data elements for max8997 are parsed here from the
* device tree. Other sub-modules of max8997 such as pmic, rtc and others have
* to parse their own platform data elements from device tree.
*
* The max8997 platform data structure is instantiated here and the drivers for
* the sub-modules need not instantiate another instance while parsing their
* platform data.
*/
static struct max8997_platform_data *max8997_i2c_parse_dt_pdata(
struct device *dev)
{
struct max8997_platform_data *pd;
pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
if (!pd)
return ERR_PTR(-ENOMEM);
pd->ono = irq_of_parse_and_map(dev->of_node, 1);
return pd;
}
static inline unsigned long max8997_i2c_get_driver_data(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
if (i2c->dev.of_node)
return (unsigned long)of_device_get_match_data(&i2c->dev);
return id->driver_data;
}
static int max8997_i2c_probe(struct i2c_client *i2c)
{
const struct i2c_device_id *id = i2c_client_get_device_id(i2c);
struct max8997_dev *max8997;
struct max8997_platform_data *pdata = dev_get_platdata(&i2c->dev);
int ret = 0;
max8997 = devm_kzalloc(&i2c->dev, sizeof(struct max8997_dev),
GFP_KERNEL);
if (max8997 == NULL)
return -ENOMEM;
i2c_set_clientdata(i2c, max8997);
max8997->dev = &i2c->dev;
max8997->i2c = i2c;
max8997->type = max8997_i2c_get_driver_data(i2c, id);
max8997->irq = i2c->irq;
if (IS_ENABLED(CONFIG_OF) && max8997->dev->of_node) {
pdata = max8997_i2c_parse_dt_pdata(max8997->dev);
if (IS_ERR(pdata))
return PTR_ERR(pdata);
}
if (!pdata)
return ret;
max8997->pdata = pdata;
max8997->ono = pdata->ono;
mutex_init(&max8997->iolock);
max8997->rtc = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_RTC);
if (IS_ERR(max8997->rtc)) {
dev_err(max8997->dev, "Failed to allocate I2C device for RTC\n");
return PTR_ERR(max8997->rtc);
}
i2c_set_clientdata(max8997->rtc, max8997);
max8997->haptic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_HAPTIC);
if (IS_ERR(max8997->haptic)) {
dev_err(max8997->dev, "Failed to allocate I2C device for Haptic\n");
ret = PTR_ERR(max8997->haptic);
goto err_i2c_haptic;
}
i2c_set_clientdata(max8997->haptic, max8997);
max8997->muic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_MUIC);
if (IS_ERR(max8997->muic)) {
dev_err(max8997->dev, "Failed to allocate I2C device for MUIC\n");
ret = PTR_ERR(max8997->muic);
goto err_i2c_muic;
}
i2c_set_clientdata(max8997->muic, max8997);
pm_runtime_set_active(max8997->dev);
max8997_irq_init(max8997);
ret = mfd_add_devices(max8997->dev, -1, max8997_devs,
ARRAY_SIZE(max8997_devs),
NULL, 0, NULL);
if (ret < 0) {
dev_err(max8997->dev, "failed to add MFD devices %d\n", ret);
goto err_mfd;
}
/*
* TODO: enable others (flash, muic, rtc, battery, ...) and
* check the return value
*/
/* MAX8997 has a power button input. */
device_init_wakeup(max8997->dev, true);
return ret;
err_mfd:
mfd_remove_devices(max8997->dev);
i2c_unregister_device(max8997->muic);
err_i2c_muic:
i2c_unregister_device(max8997->haptic);
err_i2c_haptic:
i2c_unregister_device(max8997->rtc);
return ret;
}
static const struct i2c_device_id max8997_i2c_id[] = {
{ "max8997", TYPE_MAX8997 },
{ "max8966", TYPE_MAX8966 },
{ }
};
static u8 max8997_dumpaddr_pmic[] = {
MAX8997_REG_INT1MSK,
MAX8997_REG_INT2MSK,
MAX8997_REG_INT3MSK,
MAX8997_REG_INT4MSK,
MAX8997_REG_MAINCON1,
MAX8997_REG_MAINCON2,
MAX8997_REG_BUCKRAMP,
MAX8997_REG_BUCK1CTRL,
MAX8997_REG_BUCK1DVS1,
MAX8997_REG_BUCK1DVS2,
MAX8997_REG_BUCK1DVS3,
MAX8997_REG_BUCK1DVS4,
MAX8997_REG_BUCK1DVS5,
MAX8997_REG_BUCK1DVS6,
MAX8997_REG_BUCK1DVS7,
MAX8997_REG_BUCK1DVS8,
MAX8997_REG_BUCK2CTRL,
MAX8997_REG_BUCK2DVS1,
MAX8997_REG_BUCK2DVS2,
MAX8997_REG_BUCK2DVS3,
MAX8997_REG_BUCK2DVS4,
MAX8997_REG_BUCK2DVS5,
MAX8997_REG_BUCK2DVS6,
MAX8997_REG_BUCK2DVS7,
MAX8997_REG_BUCK2DVS8,
MAX8997_REG_BUCK3CTRL,
MAX8997_REG_BUCK3DVS,
MAX8997_REG_BUCK4CTRL,
MAX8997_REG_BUCK4DVS,
MAX8997_REG_BUCK5CTRL,
MAX8997_REG_BUCK5DVS1,
MAX8997_REG_BUCK5DVS2,
MAX8997_REG_BUCK5DVS3,
MAX8997_REG_BUCK5DVS4,
MAX8997_REG_BUCK5DVS5,
MAX8997_REG_BUCK5DVS6,
MAX8997_REG_BUCK5DVS7,
MAX8997_REG_BUCK5DVS8,
MAX8997_REG_BUCK6CTRL,
MAX8997_REG_BUCK6BPSKIPCTRL,
MAX8997_REG_BUCK7CTRL,
MAX8997_REG_BUCK7DVS,
MAX8997_REG_LDO1CTRL,
MAX8997_REG_LDO2CTRL,
MAX8997_REG_LDO3CTRL,
MAX8997_REG_LDO4CTRL,
MAX8997_REG_LDO5CTRL,
MAX8997_REG_LDO6CTRL,
MAX8997_REG_LDO7CTRL,
MAX8997_REG_LDO8CTRL,
MAX8997_REG_LDO9CTRL,
MAX8997_REG_LDO10CTRL,
MAX8997_REG_LDO11CTRL,
MAX8997_REG_LDO12CTRL,
MAX8997_REG_LDO13CTRL,
MAX8997_REG_LDO14CTRL,
MAX8997_REG_LDO15CTRL,
MAX8997_REG_LDO16CTRL,
MAX8997_REG_LDO17CTRL,
MAX8997_REG_LDO18CTRL,
MAX8997_REG_LDO21CTRL,
MAX8997_REG_MBCCTRL1,
MAX8997_REG_MBCCTRL2,
MAX8997_REG_MBCCTRL3,
MAX8997_REG_MBCCTRL4,
MAX8997_REG_MBCCTRL5,
MAX8997_REG_MBCCTRL6,
MAX8997_REG_OTPCGHCVS,
MAX8997_REG_SAFEOUTCTRL,
MAX8997_REG_LBCNFG1,
MAX8997_REG_LBCNFG2,
MAX8997_REG_BBCCTRL,
MAX8997_REG_FLASH1_CUR,
MAX8997_REG_FLASH2_CUR,
MAX8997_REG_MOVIE_CUR,
MAX8997_REG_GSMB_CUR,
MAX8997_REG_BOOST_CNTL,
MAX8997_REG_LEN_CNTL,
MAX8997_REG_FLASH_CNTL,
MAX8997_REG_WDT_CNTL,
MAX8997_REG_MAXFLASH1,
MAX8997_REG_MAXFLASH2,
MAX8997_REG_FLASHSTATUSMASK,
MAX8997_REG_GPIOCNTL1,
MAX8997_REG_GPIOCNTL2,
MAX8997_REG_GPIOCNTL3,
MAX8997_REG_GPIOCNTL4,
MAX8997_REG_GPIOCNTL5,
MAX8997_REG_GPIOCNTL6,
MAX8997_REG_GPIOCNTL7,
MAX8997_REG_GPIOCNTL8,
MAX8997_REG_GPIOCNTL9,
MAX8997_REG_GPIOCNTL10,
MAX8997_REG_GPIOCNTL11,
MAX8997_REG_GPIOCNTL12,
MAX8997_REG_LDO1CONFIG,
MAX8997_REG_LDO2CONFIG,
MAX8997_REG_LDO3CONFIG,
MAX8997_REG_LDO4CONFIG,
MAX8997_REG_LDO5CONFIG,
MAX8997_REG_LDO6CONFIG,
MAX8997_REG_LDO7CONFIG,
MAX8997_REG_LDO8CONFIG,
MAX8997_REG_LDO9CONFIG,
MAX8997_REG_LDO10CONFIG,
MAX8997_REG_LDO11CONFIG,
MAX8997_REG_LDO12CONFIG,
MAX8997_REG_LDO13CONFIG,
MAX8997_REG_LDO14CONFIG,
MAX8997_REG_LDO15CONFIG,
MAX8997_REG_LDO16CONFIG,
MAX8997_REG_LDO17CONFIG,
MAX8997_REG_LDO18CONFIG,
MAX8997_REG_LDO21CONFIG,
MAX8997_REG_DVSOKTIMER1,
MAX8997_REG_DVSOKTIMER2,
MAX8997_REG_DVSOKTIMER4,
MAX8997_REG_DVSOKTIMER5,
};
static u8 max8997_dumpaddr_muic[] = {
MAX8997_MUIC_REG_INTMASK1,
MAX8997_MUIC_REG_INTMASK2,
MAX8997_MUIC_REG_INTMASK3,
MAX8997_MUIC_REG_CDETCTRL,
MAX8997_MUIC_REG_CONTROL1,
MAX8997_MUIC_REG_CONTROL2,
MAX8997_MUIC_REG_CONTROL3,
};
static u8 max8997_dumpaddr_haptic[] = {
MAX8997_HAPTIC_REG_CONF1,
MAX8997_HAPTIC_REG_CONF2,
MAX8997_HAPTIC_REG_DRVCONF,
MAX8997_HAPTIC_REG_CYCLECONF1,
MAX8997_HAPTIC_REG_CYCLECONF2,
MAX8997_HAPTIC_REG_SIGCONF1,
MAX8997_HAPTIC_REG_SIGCONF2,
MAX8997_HAPTIC_REG_SIGCONF3,
MAX8997_HAPTIC_REG_SIGCONF4,
MAX8997_HAPTIC_REG_SIGDC1,
MAX8997_HAPTIC_REG_SIGDC2,
MAX8997_HAPTIC_REG_SIGPWMDC1,
MAX8997_HAPTIC_REG_SIGPWMDC2,
MAX8997_HAPTIC_REG_SIGPWMDC3,
MAX8997_HAPTIC_REG_SIGPWMDC4,
};
static int max8997_freeze(struct device *dev)
{
struct i2c_client *i2c = to_i2c_client(dev);
struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
int i;
for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_pmic); i++)
max8997_read_reg(i2c, max8997_dumpaddr_pmic[i],
&max8997->reg_dump[i]);
for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++)
max8997_read_reg(i2c, max8997_dumpaddr_muic[i],
&max8997->reg_dump[i + MAX8997_REG_PMIC_END]);
for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++)
max8997_read_reg(i2c, max8997_dumpaddr_haptic[i],
&max8997->reg_dump[i + MAX8997_REG_PMIC_END +
MAX8997_MUIC_REG_END]);
return 0;
}
static int max8997_restore(struct device *dev)
{
struct i2c_client *i2c = to_i2c_client(dev);
struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
int i;
for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_pmic); i++)
max8997_write_reg(i2c, max8997_dumpaddr_pmic[i],
max8997->reg_dump[i]);
for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++)
max8997_write_reg(i2c, max8997_dumpaddr_muic[i],
max8997->reg_dump[i + MAX8997_REG_PMIC_END]);
for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++)
max8997_write_reg(i2c, max8997_dumpaddr_haptic[i],
max8997->reg_dump[i + MAX8997_REG_PMIC_END +
MAX8997_MUIC_REG_END]);
return 0;
}
static int max8997_suspend(struct device *dev)
{
struct i2c_client *i2c = to_i2c_client(dev);
struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
disable_irq(max8997->irq);
if (device_may_wakeup(dev))
irq_set_irq_wake(max8997->irq, 1);
return 0;
}
static int max8997_resume(struct device *dev)
{
struct i2c_client *i2c = to_i2c_client(dev);
struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
if (device_may_wakeup(dev))
irq_set_irq_wake(max8997->irq, 0);
enable_irq(max8997->irq);
return max8997_irq_resume(max8997);
}
static const struct dev_pm_ops max8997_pm = {
.suspend = max8997_suspend,
.resume = max8997_resume,
.freeze = max8997_freeze,
.restore = max8997_restore,
};
static struct i2c_driver max8997_i2c_driver = {
.driver = {
.name = "max8997",
.pm = &max8997_pm,
.suppress_bind_attrs = true,
.of_match_table = of_match_ptr(max8997_pmic_dt_match),
},
.probe = max8997_i2c_probe,
.id_table = max8997_i2c_id,
};
static int __init max8997_i2c_init(void)
{
return i2c_add_driver(&max8997_i2c_driver);
}
/* init early so consumer devices can complete system boot */
subsys_initcall(max8997_i2c_init);
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