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drivers:power:max77693: add support for new multi function pmic max77693

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This patch add support for new multi function pmic max77693.
The driver is split into three modules: pmic, muic and fuelgage.

Signed-off-by: Piotr Wilczek <p.wilczek@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
This commit is contained in:
Piotr Wilczek 2013-09-24 16:31:22 +02:00 committed by Minkyu Kang
parent 12eba1b493
commit 0475044712
8 changed files with 512 additions and 0 deletions
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1
Makefile
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@ -284,6 +284,7 @@ LIBS-y += drivers/pci/libpci.o
LIBS-y += drivers/pcmcia/libpcmcia.o
LIBS-y += drivers/power/libpower.o \
drivers/power/fuel_gauge/libfuel_gauge.o \
drivers/power/mfd/libmfd.o \
drivers/power/pmic/libpmic.o \
drivers/power/battery/libbattery.o
LIBS-y += drivers/spi/libspi.o

33
drivers/power/mfd/Makefile Normal file
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@ -0,0 +1,33 @@
#
# Copyright (C) 2013 Samsung Electronics
# Piotr Wilczek <p.wilczek@samsung.com>
#
# SPDX-License-Identifier: GPL-2.0+
#
include $(TOPDIR)/config.mk
LIB := $(obj)libmfd.o
COBJS-$(CONFIG_POWER_PMIC_MAX77693) += pmic_max77693.o
COBJS-$(CONFIG_POWER_MUIC_MAX77693) += muic_max77693.o
COBJS-$(CONFIG_POWER_FG_MAX77693) += fg_max77693.o
COBJS := $(COBJS-y)
SRCS := $(COBJS:.o=.c)
OBJS := $(addprefix $(obj),$(COBJS))
all: $(LIB)
$(LIB): $(obj).depend $(OBJS)
$(call cmd_link_o_target, $(OBJS))
#########################################################################
# defines $(obj).depend target
include $(SRCTREE)/rules.mk
sinclude $(obj).depend
########################################################################

139
drivers/power/mfd/fg_max77693.c Normal file
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@ -0,0 +1,139 @@
/*
* Copyright (C) 2013 Samsung Electronics
* Piotr Wilczek <p.wilczek@samsung.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <power/pmic.h>
#include <power/max77693_fg.h>
#include <i2c.h>
#include <power/power_chrg.h>
#include <power/battery.h>
#include <power/fg_battery_cell_params.h>
#include <errno.h>
static int max77693_get_vcell(u32 *vcell)
{
u16 value;
u8 ret;
ret = i2c_read(MAX77693_FUEL_I2C_ADDR, MAX77693_VCELL, 1,
(u8 *)&value, 2);
if (ret)
return ret;
*vcell = (u32)(value >> 3);
*vcell = *vcell * 625;
return 0;
}
static int max77693_get_soc(u32 *soc)
{
u16 value;
u8 ret;
ret = i2c_read(MAX77693_FUEL_I2C_ADDR, MAX77693_VFSOC, 1,
(u8 *)&value, 2);
if (ret)
return ret;
*soc = (u32)(value >> 8);
return 0;
}
static int power_update_battery(struct pmic *p, struct pmic *bat)
{
struct power_battery *pb = bat->pbat;
int ret;
if (pmic_probe(p)) {
puts("Can't find max77693 fuel gauge\n");
return -1;
}
ret = max77693_get_soc(&pb->bat->state_of_chrg);
if (ret)
return ret;
max77693_get_vcell(&pb->bat->voltage_uV);
if (ret)
return ret;
return 0;
}
static int power_check_battery(struct pmic *p, struct pmic *bat)
{
struct power_battery *pb = bat->pbat;
unsigned int val;
int ret = 0;
if (pmic_probe(p)) {
puts("Can't find max77693 fuel gauge\n");
return -1;
}
ret = pmic_reg_read(p, MAX77693_STATUS, &val);
if (ret)
return ret;
debug("fg status: 0x%x\n", val);
ret = pmic_reg_read(p, MAX77693_VERSION, &pb->bat->version);
if (ret)
return ret;
ret = power_update_battery(p, bat);
if (ret)
return ret;
debug("fg ver: 0x%x\n", pb->bat->version);
printf("BAT: state_of_charge(SOC):%d%%\n",
pb->bat->state_of_chrg);
printf(" voltage: %d.%6.6d [V] (expected to be %d [mAh])\n",
pb->bat->voltage_uV / 1000000,
pb->bat->voltage_uV % 1000000,
pb->bat->capacity);
if (pb->bat->voltage_uV > 3850000)
pb->bat->state = EXT_SOURCE;
else if (pb->bat->voltage_uV < 3600000 || pb->bat->state_of_chrg < 5)
pb->bat->state = CHARGE;
else
pb->bat->state = NORMAL;
return 0;
}
static struct power_fg power_fg_ops = {
.fg_battery_check = power_check_battery,
.fg_battery_update = power_update_battery,
};
int power_fg_init(unsigned char bus)
{
static const char name[] = "MAX77693_FG";
struct pmic *p = pmic_alloc();
if (!p) {
printf("%s: POWER allocation error!\n", __func__);
return -ENOMEM;
}
debug("Board Fuel Gauge init\n");
p->name = name;
p->interface = PMIC_I2C;
p->number_of_regs = FG_NUM_OF_REGS;
p->hw.i2c.addr = MAX77693_FUEL_I2C_ADDR;
p->hw.i2c.tx_num = 2;
p->sensor_byte_order = PMIC_SENSOR_BYTE_ORDER_BIG;
p->bus = bus;
p->fg = &power_fg_ops;
return 0;
}

77
drivers/power/mfd/muic_max77693.c Normal file
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@ -0,0 +1,77 @@
/*
* Copyright (C) 2013 Samsung Electronics
* Piotr Wilczek <p.wilczek@samsung.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <power/pmic.h>
#include <power/power_chrg.h>
#include <power/max77693_muic.h>
#include <i2c.h>
#include <errno.h>
static int power_chrg_get_type(struct pmic *p)
{
unsigned int val;
unsigned int charge_type, charger;
/* if probe failed, return cable none */
if (pmic_probe(p))
return CHARGER_NO;
pmic_reg_read(p, MAX77693_MUIC_STATUS2, &val);
charge_type = val & MAX77693_MUIC_CHG_MASK;
switch (charge_type) {
case MAX77693_MUIC_CHG_NO:
charger = CHARGER_NO;
break;
case MAX77693_MUIC_CHG_USB:
case MAX77693_MUIC_CHG_USB_D:
charger = CHARGER_USB;
break;
case MAX77693_MUIC_CHG_TA:
case MAX77693_MUIC_CHG_TA_1A:
charger = CHARGER_TA;
break;
case MAX77693_MUIC_CHG_TA_500:
charger = CHARGER_TA_500;
break;
default:
charger = CHARGER_UNKNOWN;
break;
}
return charger;
}
static struct power_chrg power_chrg_muic_ops = {
.chrg_type = power_chrg_get_type,
};
int power_muic_init(unsigned int bus)
{
static const char name[] = "MAX77693_MUIC";
struct pmic *p = pmic_alloc();
if (!p) {
printf("%s: POWER allocation error!\n", __func__);
return -ENOMEM;
}
debug("Board Micro USB Interface Controller init\n");
p->name = name;
p->interface = PMIC_I2C;
p->number_of_regs = MUIC_NUM_OF_REGS;
p->hw.i2c.addr = MAX77693_MUIC_I2C_ADDR;
p->hw.i2c.tx_num = 1;
p->bus = bus;
p->chrg = &power_chrg_muic_ops;
return 0;
}

96
drivers/power/mfd/pmic_max77693.c Normal file
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@ -0,0 +1,96 @@
/*
* Copyright (C) 2013 Samsung Electronics
* Piotr Wilczek <p.wilczek@samsung.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <power/pmic.h>
#include <power/max77693_pmic.h>
#include <i2c.h>
#include <errno.h>
static int max77693_charger_state(struct pmic *p, int state, int current)
{
unsigned int val;
if (pmic_probe(p))
return -1;
/* unlock write capability */
val = MAX77693_CHG_UNLOCK;
pmic_reg_write(p, MAX77693_CHG_CNFG_06, val);
if (state == CHARGER_DISABLE) {
puts("Disable the charger.\n");
pmic_reg_read(p, MAX77693_CHG_CNFG_00, &val);
val &= ~0x01;
pmic_reg_write(p, MAX77693_CHG_CNFG_00, val);
return -1;
}
if (current < CHARGER_MIN_CURRENT || current > CHARGER_MAX_CURRENT) {
printf("%s: Wrong charge current: %d [mA]\n",
__func__, current);
return -1;
}
/* set charging current */
pmic_reg_read(p, MAX77693_CHG_CNFG_02, &val);
val &= ~MAX77693_CHG_CC;
val |= current * 10 / 333; /* 0.1A/3 steps */
pmic_reg_write(p, MAX77693_CHG_CNFG_02, val);
/* enable charging */
val = MAX77693_CHG_MODE_ON;
pmic_reg_write(p, MAX77693_CHG_CNFG_00, val);
/* check charging current */
pmic_reg_read(p, MAX77693_CHG_CNFG_02, &val);
val &= 0x3f;
printf("Enable the charger @ %d [mA]\n", val * 333 / 10);
return 0;
}
static int max77693_charger_bat_present(struct pmic *p)
{
unsigned int val;
if (pmic_probe(p))
return -1;
pmic_reg_read(p, MAX77693_CHG_INT_OK, &val);
return !(val & MAX77693_CHG_DETBAT);
}
static struct power_chrg power_chrg_pmic_ops = {
.chrg_bat_present = max77693_charger_bat_present,
.chrg_state = max77693_charger_state,
};
int pmic_init_max77693(unsigned char bus)
{
static const char name[] = "MAX77693_PMIC";
struct pmic *p = pmic_alloc();
if (!p) {
printf("%s: POWER allocation error!\n", __func__);
return -ENOMEM;
}
debug("Board PMIC init\n");
p->name = name;
p->interface = PMIC_I2C;
p->number_of_regs = PMIC_NUM_OF_REGS;
p->hw.i2c.addr = MAX77693_PMIC_I2C_ADDR;
p->hw.i2c.tx_num = 1;
p->bus = bus;
p->chrg = &power_chrg_pmic_ops;
return 0;
}

49
include/power/max77693_fg.h Normal file
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@ -0,0 +1,49 @@
/*
* Copyright (C) 2013 Samsung Electronics
* Piotr Wilczek <p.wilczek@samsung.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __MAX77693_FG_H_
#define __MAX77693_FG_H_
/* MAX 77693 registers */
enum {
MAX77693_STATUS = 0x00,
MAX77693_SOCREP = 0x06,
MAX77693_VCELL = 0x09,
MAX77693_CURRENT = 0x0A,
MAX77693_AVG_CURRENT = 0x0B,
MAX77693_SOCMIX = 0x0D,
MAX77693_SOCAV = 0x0E,
MAX77693_DESIGN_CAP = 0x18,
MAX77693_AVG_VCELL = 0x19,
MAX77693_CONFIG = 0x1D,
MAX77693_VERSION = 0x21,
MAX77693_LEARNCFG = 0x28,
MAX77693_FILTERCFG = 0x29,
MAX77693_RELAXCFG = 0x2A,
MAX77693_MISCCFG = 0x2B,
MAX77693_CGAIN = 0x2E,
MAX77693_COFF = 0x2F,
MAX77693_RCOMP0 = 0x38,
MAX77693_TEMPCO = 0x39,
MAX77693_FSTAT = 0x3D,
MAX77693_VFOCV = 0xEE,
MAX77693_VFSOC = 0xFF,
FG_NUM_OF_REGS = 0x100,
};
#define MAX77693_POR (1 << 1)
#define MODEL_UNLOCK1 0x0059
#define MODEL_UNLOCK2 0x00c4
#define MODEL_LOCK1 0x0000
#define MODEL_LOCK2 0x0000
#define MAX77693_FUEL_I2C_ADDR (0x6C >> 1)
int power_fg_init(unsigned char bus);
#endif /* __MAX77693_FG_H_ */

74
include/power/max77693_muic.h Normal file
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@ -0,0 +1,74 @@
/*
* Copyright (C) 2013 Samsung Electronics
* Piotr Wilczek <p.wilczek@samsung.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __MAX77693_MUIC_H_
#define __MAX77693_MUIC_H_
#include <power/power_chrg.h>
/*
* MUIC REGISTER
*/
#define MAX77693_MUIC_PREFIX "max77693-muic:"
/* MAX77693_MUIC_STATUS1 */
#define MAX77693_MUIC_ADC_MASK 0x1F
/* MAX77693_MUIC_STATUS2 */
#define MAX77693_MUIC_CHG_NO 0x00
#define MAX77693_MUIC_CHG_USB 0x01
#define MAX77693_MUIC_CHG_USB_D 0x02
#define MAX77693_MUIC_CHG_TA 0x03
#define MAX77693_MUIC_CHG_TA_500 0x04
#define MAX77693_MUIC_CHG_TA_1A 0x05
#define MAX77693_MUIC_CHG_MASK 0x07
/* MAX77693_MUIC_CONTROL1 */
#define MAX77693_MUIC_CTRL1_DN1DP2 ((0x1 << 3) | 0x1)
#define MAX77693_MUIC_CTRL1_UT1UR2 ((0x3 << 3) | 0x3)
#define MAX77693_MUIC_CTRL1_ADN1ADP2 ((0x4 << 3) | 0x4)
#define MAX77693_MUIC_CTRL1_AUT1AUR2 ((0x5 << 3) | 0x5)
#define MAX77693_MUIC_CTRL1_MASK 0xC0
#define MUIC_PATH_USB 0
#define MUIC_PATH_UART 1
#define MUIC_PATH_CP 0
#define MUIC_PATH_AP 1
enum muic_path {
MUIC_PATH_USB_CP,
MUIC_PATH_USB_AP,
MUIC_PATH_UART_CP,
MUIC_PATH_UART_AP,
};
/* MAX 777693 MUIC registers */
enum {
MAX77693_MUIC_ID = 0x00,
MAX77693_MUIC_INT1 = 0x01,
MAX77693_MUIC_INT2 = 0x02,
MAX77693_MUIC_INT3 = 0x03,
MAX77693_MUIC_STATUS1 = 0x04,
MAX77693_MUIC_STATUS2 = 0x05,
MAX77693_MUIC_STATUS3 = 0x06,
MAX77693_MUIC_INTMASK1 = 0x07,
MAX77693_MUIC_INTMASK2 = 0x08,
MAX77693_MUIC_INTMASK3 = 0x09,
MAX77693_MUIC_CDETCTRL = 0x0A,
MAX77693_MUIC_CONTROL1 = 0x0C,
MAX77693_MUIC_CONTROL2 = 0x0D,
MAX77693_MUIC_CONTROL3 = 0x0E,
MUIC_NUM_OF_REGS = 0x0F,
};
#define MAX77693_MUIC_I2C_ADDR (0x4A >> 1)
int power_muic_init(unsigned int bus);
#endif /* __MAX77693_MUIC_H_ */

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include/power/max77693_pmic.h Normal file
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@ -0,0 +1,43 @@
/*
* Copyright (C) 2013 Samsung Electronics
* Piotr Wilczek <p.wilczek@samsung.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __MAX77693_PMIC_H_
#define __MAX77693_PMIC_H_
#include <power/power_chrg.h>
enum {CHARGER_ENABLE, CHARGER_DISABLE};
#define CHARGER_MIN_CURRENT 200
#define CHARGER_MAX_CURRENT 2000
#define MAX77693_CHG_PREFIX "max77693-chg:"
/* Registers */
#define MAX77693_CHG_BASE 0xB0
#define MAX77693_CHG_INT_OK 0xB2
#define MAX77693_CHG_CNFG_00 0xB7
#define MAX77693_CHG_CNFG_02 0xB9
#define MAX77693_CHG_CNFG_06 0xBD
#define MAX77693_SAFEOUT 0xC6
#define PMIC_NUM_OF_REGS 0xC7
#define MAX77693_CHG_DETBAT (0x1 << 7) /* MAX77693_CHG_INT_OK */
#define MAX77693_CHG_MODE_ON 0x05 /* MAX77693_CHG_CNFG_00 */
#define MAX77693_CHG_CC 0x3F /* MAX77693_CHG_CNFG_02 */
#define MAX77693_CHG_LOCK (0x0 << 2) /* MAX77693_CHG_CNFG_06 */
#define MAX77693_CHG_UNLOCK (0x3 << 2) /* MAX77693_CHG_CNFG_06 */
#define MAX77693_ENSAFEOUT1 (1 << 6)
#define MAX77693_ENSAFEOUT2 (1 << 7)
#define MAX77693_PMIC_I2C_ADDR (0xCC >> 1)
int pmic_init_max77693(unsigned char bus);
#endif /* __MAX77693_PMIC_H_ */