mfd: Add MAX77693 driver

This patch adds MFD driver for MAX77693 to enable its sub devices.

The MAX77693 is a multi-function devices. It includes PMIC,
MUIC(Micro USB Interface Controller), flash LED control and
haptic motor control.

Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Chanwoo Choi 2012-05-14 22:50:39 +02:00 committed by Samuel Ortiz
parent ebd29c6cc0
commit 83871c00bb
5 changed files with 484 additions and 0 deletions

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@ -420,6 +420,18 @@ config PMIC_ADP5520
individual components like LCD backlight, LEDs, GPIOs and Kepad
under the corresponding menus.
config MFD_MAX77693
bool "Maxim Semiconductor MAX77693 PMIC Support"
depends on I2C=y && GENERIC_HARDIRQS
select MFD_CORE
help
Say yes here to support for Maxim Semiconductor MAX77693.
This is a companion Power Management IC with Flash, Haptic, Charger,
and MUIC(Micro USB Interface Controller) controls on chip.
This driver provides common support for accessing the device;
additional drivers must be enabled in order to use the functionality
of the device.
config MFD_MAX8925
bool "Maxim Semiconductor MAX8925 PMIC Support"
depends on I2C=y && GENERIC_HARDIRQS

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@ -78,6 +78,7 @@ obj-$(CONFIG_PMIC_DA9052) += da9052-core.o
obj-$(CONFIG_MFD_DA9052_SPI) += da9052-spi.o
obj-$(CONFIG_MFD_DA9052_I2C) += da9052-i2c.o
obj-$(CONFIG_MFD_MAX77693) += max77693.o
max8925-objs := max8925-core.o max8925-i2c.o
obj-$(CONFIG_MFD_MAX8925) += max8925.o
obj-$(CONFIG_MFD_MAX8997) += max8997.o max8997-irq.o

217
drivers/mfd/max77693.c Normal file
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@ -0,0 +1,217 @@
/*
* max77693.c - mfd core driver for the MAX 77693
*
* Copyright (C) 2012 Samsung Electronics
* SangYoung Son <hello.son@smasung.com>
*
* This program is not provided / owned by Maxim Integrated Products.
*
* 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 max8997.c
*/
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/err.h>
#include <linux/interrupt.h>
#include <linux/pm_runtime.h>
#include <linux/mutex.h>
#include <linux/mfd/core.h>
#include <linux/mfd/max77693.h>
#include <linux/mfd/max77693-private.h>
#include <linux/regulator/machine.h>
#include <linux/regmap.h>
#define I2C_ADDR_PMIC (0xCC >> 1) /* Charger, Flash LED */
#define I2C_ADDR_MUIC (0x4A >> 1)
#define I2C_ADDR_HAPTIC (0x90 >> 1)
static struct mfd_cell max77693_devs[] = {
{ .name = "max77693-pmic", },
{ .name = "max77693-charger", },
{ .name = "max77693-flash", },
{ .name = "max77693-muic", },
{ .name = "max77693-haptic", },
};
int max77693_read_reg(struct regmap *map, u8 reg, u8 *dest)
{
unsigned int val;
int ret;
ret = regmap_read(map, reg, &val);
*dest = val;
return ret;
}
EXPORT_SYMBOL_GPL(max77693_read_reg);
int max77693_bulk_read(struct regmap *map, u8 reg, int count, u8 *buf)
{
int ret;
ret = regmap_bulk_read(map, reg, buf, count);
return ret;
}
EXPORT_SYMBOL_GPL(max77693_bulk_read);
int max77693_write_reg(struct regmap *map, u8 reg, u8 value)
{
int ret;
ret = regmap_write(map, reg, value);
return ret;
}
EXPORT_SYMBOL_GPL(max77693_write_reg);
int max77693_bulk_write(struct regmap *map, u8 reg, int count, u8 *buf)
{
int ret;
ret = regmap_bulk_write(map, reg, buf, count);
return ret;
}
EXPORT_SYMBOL_GPL(max77693_bulk_write);
int max77693_update_reg(struct regmap *map, u8 reg, u8 val, u8 mask)
{
int ret;
ret = regmap_update_bits(map, reg, mask, val);
return ret;
}
EXPORT_SYMBOL_GPL(max77693_update_reg);
static const struct regmap_config max77693_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
.max_register = MAX77693_PMIC_REG_END,
};
static int max77693_i2c_probe(struct i2c_client *i2c,
const struct i2c_device_id *id)
{
struct max77693_dev *max77693;
struct max77693_platform_data *pdata = i2c->dev.platform_data;
u8 reg_data;
int ret = 0;
max77693 = devm_kzalloc(&i2c->dev,
sizeof(struct max77693_dev), GFP_KERNEL);
if (max77693 == NULL)
return -ENOMEM;
max77693->regmap = devm_regmap_init_i2c(i2c, &max77693_regmap_config);
if (IS_ERR(max77693->regmap)) {
ret = PTR_ERR(max77693->regmap);
dev_err(max77693->dev,"failed to allocate register map: %d\n",
ret);
goto err_regmap;
}
i2c_set_clientdata(i2c, max77693);
max77693->dev = &i2c->dev;
max77693->i2c = i2c;
max77693->irq = i2c->irq;
max77693->type = id->driver_data;
if (!pdata)
goto err_regmap;
max77693->wakeup = pdata->wakeup;
mutex_init(&max77693->iolock);
if (max77693_read_reg(max77693->regmap,
MAX77693_PMIC_REG_PMIC_ID2, &reg_data) < 0) {
dev_err(max77693->dev, "device not found on this channel\n");
ret = -ENODEV;
goto err_regmap;
} else
dev_info(max77693->dev, "device ID: 0x%x\n", reg_data);
max77693->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC);
i2c_set_clientdata(max77693->muic, max77693);
max77693->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC);
i2c_set_clientdata(max77693->haptic, max77693);
pm_runtime_set_active(max77693->dev);
ret = mfd_add_devices(max77693->dev, -1, max77693_devs,
ARRAY_SIZE(max77693_devs), NULL, 0);
if (ret < 0)
goto err_mfd;
return ret;
err_mfd:
i2c_unregister_device(max77693->muic);
i2c_unregister_device(max77693->haptic);
err_regmap:
kfree(max77693);
return ret;
}
static int max77693_i2c_remove(struct i2c_client *i2c)
{
struct max77693_dev *max77693 = i2c_get_clientdata(i2c);
mfd_remove_devices(max77693->dev);
i2c_unregister_device(max77693->muic);
i2c_unregister_device(max77693->haptic);
return 0;
}
static const struct i2c_device_id max77693_i2c_id[] = {
{ "max77693", TYPE_MAX77693 },
{ }
};
MODULE_DEVICE_TABLE(i2c, max77693_i2c_id);
static struct i2c_driver max77693_i2c_driver = {
.driver = {
.name = "max77693",
.owner = THIS_MODULE,
},
.probe = max77693_i2c_probe,
.remove = max77693_i2c_remove,
.id_table = max77693_i2c_id,
};
static int __init max77693_i2c_init(void)
{
return i2c_add_driver(&max77693_i2c_driver);
}
/* init early so consumer devices can complete system boot */
subsys_initcall(max77693_i2c_init);
static void __exit max77693_i2c_exit(void)
{
i2c_del_driver(&max77693_i2c_driver);
}
module_exit(max77693_i2c_exit);
MODULE_DESCRIPTION("MAXIM 77693 multi-function core driver");
MODULE_AUTHOR("SangYoung, Son <hello.son@samsung.com>");
MODULE_LICENSE("GPL");

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@ -0,0 +1,217 @@
/*
* max77693-private.h - Voltage regulator driver for the Maxim 77693
*
* Copyright (C) 2012 Samsung Electrnoics
* SangYoung Son <hello.son@samsung.com>
*
* This program is not provided / owned by Maxim Integrated Products.
*
* 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
*/
#ifndef __LINUX_MFD_MAX77693_PRIV_H
#define __LINUX_MFD_MAX77693_PRIV_H
#include <linux/i2c.h>
#define MAX77693_NUM_IRQ_MUIC_REGS 3
#define MAX77693_REG_INVALID (0xff)
/* Slave addr = 0xCC: PMIC, Charger, Flash LED */
enum max77693_pmic_reg {
MAX77693_LED_REG_IFLASH1 = 0x00,
MAX77693_LED_REG_IFLASH2 = 0x01,
MAX77693_LED_REG_ITORCH = 0x02,
MAX77693_LED_REG_ITORCHTIMER = 0x03,
MAX77693_LED_REG_FLASH_TIMER = 0x04,
MAX77693_LED_REG_FLASH_EN = 0x05,
MAX77693_LED_REG_MAX_FLASH1 = 0x06,
MAX77693_LED_REG_MAX_FLASH2 = 0x07,
MAX77693_LED_REG_MAX_FLASH3 = 0x08,
MAX77693_LED_REG_MAX_FLASH4 = 0x09,
MAX77693_LED_REG_VOUT_CNTL = 0x0A,
MAX77693_LED_REG_VOUT_FLASH1 = 0x0B,
MAX77693_LED_REG_VOUT_FLASH2 = 0x0C,
MAX77693_LED_REG_FLASH_INT = 0x0E,
MAX77693_LED_REG_FLASH_INT_MASK = 0x0F,
MAX77693_LED_REG_FLASH_INT_STATUS = 0x10,
MAX77693_PMIC_REG_PMIC_ID1 = 0x20,
MAX77693_PMIC_REG_PMIC_ID2 = 0x21,
MAX77693_PMIC_REG_INTSRC = 0x22,
MAX77693_PMIC_REG_INTSRC_MASK = 0x23,
MAX77693_PMIC_REG_TOPSYS_INT = 0x24,
MAX77693_PMIC_REG_TOPSYS_INT_MASK = 0x26,
MAX77693_PMIC_REG_TOPSYS_STAT = 0x28,
MAX77693_PMIC_REG_MAINCTRL1 = 0x2A,
MAX77693_PMIC_REG_LSCNFG = 0x2B,
MAX77693_CHG_REG_CHG_INT = 0xB0,
MAX77693_CHG_REG_CHG_INT_MASK = 0xB1,
MAX77693_CHG_REG_CHG_INT_OK = 0xB2,
MAX77693_CHG_REG_CHG_DETAILS_00 = 0xB3,
MAX77693_CHG_REG_CHG_DETAILS_01 = 0xB4,
MAX77693_CHG_REG_CHG_DETAILS_02 = 0xB5,
MAX77693_CHG_REG_CHG_DETAILS_03 = 0xB6,
MAX77693_CHG_REG_CHG_CNFG_00 = 0xB7,
MAX77693_CHG_REG_CHG_CNFG_01 = 0xB8,
MAX77693_CHG_REG_CHG_CNFG_02 = 0xB9,
MAX77693_CHG_REG_CHG_CNFG_03 = 0xBA,
MAX77693_CHG_REG_CHG_CNFG_04 = 0xBB,
MAX77693_CHG_REG_CHG_CNFG_05 = 0xBC,
MAX77693_CHG_REG_CHG_CNFG_06 = 0xBD,
MAX77693_CHG_REG_CHG_CNFG_07 = 0xBE,
MAX77693_CHG_REG_CHG_CNFG_08 = 0xBF,
MAX77693_CHG_REG_CHG_CNFG_09 = 0xC0,
MAX77693_CHG_REG_CHG_CNFG_10 = 0xC1,
MAX77693_CHG_REG_CHG_CNFG_11 = 0xC2,
MAX77693_CHG_REG_CHG_CNFG_12 = 0xC3,
MAX77693_CHG_REG_CHG_CNFG_13 = 0xC4,
MAX77693_CHG_REG_CHG_CNFG_14 = 0xC5,
MAX77693_CHG_REG_SAFEOUT_CTRL = 0xC6,
MAX77693_PMIC_REG_END,
};
/* Slave addr = 0x4A: MUIC */
enum max77693_muic_reg {
MAX77693_MUIC_REG_ID = 0x00,
MAX77693_MUIC_REG_INT1 = 0x01,
MAX77693_MUIC_REG_INT2 = 0x02,
MAX77693_MUIC_REG_INT3 = 0x03,
MAX77693_MUIC_REG_STATUS1 = 0x04,
MAX77693_MUIC_REG_STATUS2 = 0x05,
MAX77693_MUIC_REG_STATUS3 = 0x06,
MAX77693_MUIC_REG_INTMASK1 = 0x07,
MAX77693_MUIC_REG_INTMASK2 = 0x08,
MAX77693_MUIC_REG_INTMASK3 = 0x09,
MAX77693_MUIC_REG_CDETCTRL1 = 0x0A,
MAX77693_MUIC_REG_CDETCTRL2 = 0x0B,
MAX77693_MUIC_REG_CTRL1 = 0x0C,
MAX77693_MUIC_REG_CTRL2 = 0x0D,
MAX77693_MUIC_REG_CTRL3 = 0x0E,
MAX77693_MUIC_REG_END,
};
/* Slave addr = 0x90: Haptic */
enum max77693_haptic_reg {
MAX77693_HAPTIC_REG_STATUS = 0x00,
MAX77693_HAPTIC_REG_CONFIG1 = 0x01,
MAX77693_HAPTIC_REG_CONFIG2 = 0x02,
MAX77693_HAPTIC_REG_CONFIG_CHNL = 0x03,
MAX77693_HAPTIC_REG_CONFG_CYC1 = 0x04,
MAX77693_HAPTIC_REG_CONFG_CYC2 = 0x05,
MAX77693_HAPTIC_REG_CONFIG_PER1 = 0x06,
MAX77693_HAPTIC_REG_CONFIG_PER2 = 0x07,
MAX77693_HAPTIC_REG_CONFIG_PER3 = 0x08,
MAX77693_HAPTIC_REG_CONFIG_PER4 = 0x09,
MAX77693_HAPTIC_REG_CONFIG_DUTY1 = 0x0A,
MAX77693_HAPTIC_REG_CONFIG_DUTY2 = 0x0B,
MAX77693_HAPTIC_REG_CONFIG_PWM1 = 0x0C,
MAX77693_HAPTIC_REG_CONFIG_PWM2 = 0x0D,
MAX77693_HAPTIC_REG_CONFIG_PWM3 = 0x0E,
MAX77693_HAPTIC_REG_CONFIG_PWM4 = 0x0F,
MAX77693_HAPTIC_REG_REV = 0x10,
MAX77693_HAPTIC_REG_END,
};
enum max77693_irq_source {
LED_INT = 0,
TOPSYS_INT,
CHG_INT,
MUIC_INT1,
MUIC_INT2,
MUIC_INT3,
MAX77693_IRQ_GROUP_NR,
};
enum max77693_irq {
/* PMIC - FLASH */
MAX77693_LED_IRQ_FLED2_OPEN,
MAX77693_LED_IRQ_FLED2_SHORT,
MAX77693_LED_IRQ_FLED1_OPEN,
MAX77693_LED_IRQ_FLED1_SHORT,
MAX77693_LED_IRQ_MAX_FLASH,
/* PMIC - TOPSYS */
MAX77693_TOPSYS_IRQ_T120C_INT,
MAX77693_TOPSYS_IRQ_T140C_INT,
MAX77693_TOPSYS_IRQ_LOWSYS_INT,
/* PMIC - Charger */
MAX77693_CHG_IRQ_BYP_I,
MAX77693_CHG_IRQ_THM_I,
MAX77693_CHG_IRQ_BAT_I,
MAX77693_CHG_IRQ_CHG_I,
MAX77693_CHG_IRQ_CHGIN_I,
/* MUIC INT1 */
MAX77693_MUIC_IRQ_INT1_ADC,
MAX77693_MUIC_IRQ_INT1_ADC_LOW,
MAX77693_MUIC_IRQ_INT1_ADC_ERR,
MAX77693_MUIC_IRQ_INT1_ADC1K,
/* MUIC INT2 */
MAX77693_MUIC_IRQ_INT2_CHGTYP,
MAX77693_MUIC_IRQ_INT2_CHGDETREUN,
MAX77693_MUIC_IRQ_INT2_DCDTMR,
MAX77693_MUIC_IRQ_INT2_DXOVP,
MAX77693_MUIC_IRQ_INT2_VBVOLT,
MAX77693_MUIC_IRQ_INT2_VIDRM,
/* MUIC INT3 */
MAX77693_MUIC_IRQ_INT3_EOC,
MAX77693_MUIC_IRQ_INT3_CGMBC,
MAX77693_MUIC_IRQ_INT3_OVP,
MAX77693_MUIC_IRQ_INT3_MBCCHG_ERR,
MAX77693_MUIC_IRQ_INT3_CHG_ENABLED,
MAX77693_MUIC_IRQ_INT3_BAT_DET,
MAX77693_IRQ_NR,
};
struct max77693_dev {
struct device *dev;
struct i2c_client *i2c; /* 0xCC , PMIC, Charger, Flash LED */
struct i2c_client *muic; /* 0x4A , MUIC */
struct i2c_client *haptic; /* 0x90 , Haptic */
struct mutex iolock;
int type;
struct regmap *regmap;
struct regmap *regmap_muic;
struct regmap *regmap_haptic;
int irq;
bool wakeup;
};
enum max77693_types {
TYPE_MAX77693,
};
extern int max77693_read_reg(struct regmap *map, u8 reg, u8 *dest);
extern int max77693_bulk_read(struct regmap *map, u8 reg, int count,
u8 *buf);
extern int max77693_write_reg(struct regmap *map, u8 reg, u8 value);
extern int max77693_bulk_write(struct regmap *map, u8 reg, int count,
u8 *buf);
extern int max77693_update_reg(struct regmap *map, u8 reg, u8 val, u8 mask);
#endif /* __LINUX_MFD_MAX77693_PRIV_H */

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@ -0,0 +1,37 @@
/*
* max77693.h - Driver for the Maxim 77693
*
* Copyright (C) 2012 Samsung Electrnoics
* SangYoung Son <hello.son@samsung.com>
*
* This program is not provided / owned by Maxim Integrated Products.
*
* 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 max8997.h
*
* MAX77693 has PMIC, Charger, Flash LED, Haptic, MUIC devices.
* The devices share the same I2C bus and included in
* this mfd driver.
*/
#ifndef __LINUX_MFD_MAX77693_H
#define __LINUX_MFD_MAX77693_H
struct max77693_platform_data {
/* IRQ */
int wakeup;
};
#endif /* __LINUX_MFD_MAX77693_H */