428 lines
11 KiB
C
428 lines
11 KiB
C
|
/*
|
||
|
|
* max8997.c - mfd core driver for the Maxim 8966 and 8997
|
||
|
|
*
|
||
|
|
* Copyright (C) 2011 Samsung Electronics
|
||
|
|
* MyungJoo Ham <myungjoo.ham@smasung.com>
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; either version 2 of the License, or
|
||
|
|
* (at your option) any later version.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||
|
|
*
|
||
|
|
* This driver is based on max8998.c
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/slab.h>
|
||
|
|
#include <linux/i2c.h>
|
||
|
|
#include <linux/pm_runtime.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 struct mfd_cell max8997_devs[] = {
|
||
|
|
{ .name = "max8997-pmic", },
|
||
|
|
{ .name = "max8997-rtc", },
|
||
|
|
{ .name = "max8997-battery", },
|
||
|
|
{ .name = "max8997-haptic", },
|
||
|
|
{ .name = "max8997-muic", },
|
||
|
|
{ .name = "max8997-flash", },
|
||
|
|
};
|
||
|
|
|
||
|
|
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);
|
||
|
|
|
||
|
|
static int max8997_i2c_probe(struct i2c_client *i2c,
|
||
|
|
const struct i2c_device_id *id)
|
||
|
|
{
|
||
|
|
struct max8997_dev *max8997;
|
||
|
|
struct max8997_platform_data *pdata = i2c->dev.platform_data;
|
||
|
|
int ret = 0;
|
||
|
|
|
||
|
|
max8997 = kzalloc(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 = id->driver_data;
|
||
|
|
|
||
|
|
if (!pdata)
|
||
|
|
goto err;
|
||
|
|
|
||
|
|
max8997->wakeup = pdata->wakeup;
|
||
|
|
|
||
|
|
mutex_init(&max8997->iolock);
|
||
|
|
|
||
|
|
max8997->rtc = i2c_new_dummy(i2c->adapter, I2C_ADDR_RTC);
|
||
|
|
i2c_set_clientdata(max8997->rtc, max8997);
|
||
|
|
max8997->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC);
|
||
|
|
i2c_set_clientdata(max8997->haptic, max8997);
|
||
|
|
max8997->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC);
|
||
|
|
i2c_set_clientdata(max8997->muic, max8997);
|
||
|
|
|
||
|
|
pm_runtime_set_active(max8997->dev);
|
||
|
|
|
||
|
|
mfd_add_devices(max8997->dev, -1, max8997_devs,
|
||
|
|
ARRAY_SIZE(max8997_devs),
|
||
|
|
NULL, 0);
|
||
|
|
|
||
|
|
/*
|
||
|
|
* TODO: enable others (flash, muic, rtc, battery, ...) and
|
||
|
|
* check the return value
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (ret < 0)
|
||
|
|
goto err_mfd;
|
||
|
|
|
||
|
|
return ret;
|
||
|
|
|
||
|
|
err_mfd:
|
||
|
|
mfd_remove_devices(max8997->dev);
|
||
|
|
i2c_unregister_device(max8997->muic);
|
||
|
|
i2c_unregister_device(max8997->haptic);
|
||
|
|
i2c_unregister_device(max8997->rtc);
|
||
|
|
err:
|
||
|
|
kfree(max8997);
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
static int max8997_i2c_remove(struct i2c_client *i2c)
|
||
|
|
{
|
||
|
|
struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
|
||
|
|
|
||
|
|
mfd_remove_devices(max8997->dev);
|
||
|
|
i2c_unregister_device(max8997->muic);
|
||
|
|
i2c_unregister_device(max8997->haptic);
|
||
|
|
i2c_unregister_device(max8997->rtc);
|
||
|
|
kfree(max8997);
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
static const struct i2c_device_id max8997_i2c_id[] = {
|
||
|
|
{ "max8997", TYPE_MAX8997 },
|
||
|
|
{ "max8966", TYPE_MAX8966 },
|
||
|
|
{ }
|
||
|
|
};
|
||
|
|
MODULE_DEVICE_TABLE(i2c, max8998_i2c_id);
|
||
|
|
|
||
|
|
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,
|
||
|
|
};
|
||
|
|
|
||
|
|
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,
|
||
|
|
};
|
||
|
|
|
||
|
|
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 = container_of(dev, struct 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 = container_of(dev, struct 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;
|
||
|
|
}
|
||
|
|
|
||
|
|
const struct dev_pm_ops max8997_pm = {
|
||
|
|
.freeze = max8997_freeze,
|
||
|
|
.restore = max8997_restore,
|
||
|
|
};
|
||
|
|
|
||
|
|
static struct i2c_driver max8997_i2c_driver = {
|
||
|
|
.driver = {
|
||
|
|
.name = "max8997",
|
||
|
|
.owner = THIS_MODULE,
|
||
|
|
.pm = &max8997_pm,
|
||
|
|
},
|
||
|
|
.probe = max8997_i2c_probe,
|
||
|
|
.remove = max8997_i2c_remove,
|
||
|
|
.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);
|
||
|
|
|
||
|
|
static void __exit max8997_i2c_exit(void)
|
||
|
|
{
|
||
|
|
i2c_del_driver(&max8997_i2c_driver);
|
||
|
|
}
|
||
|
|
module_exit(max8997_i2c_exit);
|
||
|
|
|
||
|
|
MODULE_DESCRIPTION("MAXIM 8997 multi-function core driver");
|
||
|
|
MODULE_AUTHOR("MyungJoo Ham <myungjoo.ham@samsung.com>");
|
||
|
|
MODULE_LICENSE("GPL");
|