From 04750447124143dfc9444a0c3335ffc9636e1df8 Mon Sep 17 00:00:00 2001 From: Piotr Wilczek Date: Tue, 24 Sep 2013 16:31:22 +0200 Subject: [PATCH] drivers:power:max77693: add support for new multi function pmic max77693 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 Signed-off-by: Kyungmin Park Signed-off-by: Minkyu Kang --- Makefile | 1 + drivers/power/mfd/Makefile | 33 +++++++ drivers/power/mfd/fg_max77693.c | 139 ++++++++++++++++++++++++++++++ drivers/power/mfd/muic_max77693.c | 77 +++++++++++++++++ drivers/power/mfd/pmic_max77693.c | 96 +++++++++++++++++++++ include/power/max77693_fg.h | 49 +++++++++++ include/power/max77693_muic.h | 74 ++++++++++++++++ include/power/max77693_pmic.h | 43 +++++++++ 8 files changed, 512 insertions(+) create mode 100644 drivers/power/mfd/Makefile create mode 100644 drivers/power/mfd/fg_max77693.c create mode 100644 drivers/power/mfd/muic_max77693.c create mode 100644 drivers/power/mfd/pmic_max77693.c create mode 100644 include/power/max77693_fg.h create mode 100644 include/power/max77693_muic.h create mode 100644 include/power/max77693_pmic.h diff --git a/Makefile b/Makefile index 1365db68fe..7d62f3877c 100644 --- a/Makefile +++ b/Makefile @@ -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 diff --git a/drivers/power/mfd/Makefile b/drivers/power/mfd/Makefile new file mode 100644 index 0000000000..76a05daa67 --- /dev/null +++ b/drivers/power/mfd/Makefile @@ -0,0 +1,33 @@ +# +# Copyright (C) 2013 Samsung Electronics +# Piotr Wilczek +# +# 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 + +######################################################################## diff --git a/drivers/power/mfd/fg_max77693.c b/drivers/power/mfd/fg_max77693.c new file mode 100644 index 0000000000..4519fed497 --- /dev/null +++ b/drivers/power/mfd/fg_max77693.c @@ -0,0 +1,139 @@ +/* + * Copyright (C) 2013 Samsung Electronics + * Piotr Wilczek + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +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; +} diff --git a/drivers/power/mfd/muic_max77693.c b/drivers/power/mfd/muic_max77693.c new file mode 100644 index 0000000000..e71012de1f --- /dev/null +++ b/drivers/power/mfd/muic_max77693.c @@ -0,0 +1,77 @@ +/* + * Copyright (C) 2013 Samsung Electronics + * Piotr Wilczek + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include +#include + +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; +} diff --git a/drivers/power/mfd/pmic_max77693.c b/drivers/power/mfd/pmic_max77693.c new file mode 100644 index 0000000000..1a4416b54f --- /dev/null +++ b/drivers/power/mfd/pmic_max77693.c @@ -0,0 +1,96 @@ +/* + * Copyright (C) 2013 Samsung Electronics + * Piotr Wilczek + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include +#include +#include +#include +#include + +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; +} diff --git a/include/power/max77693_fg.h b/include/power/max77693_fg.h new file mode 100644 index 0000000000..42626ed839 --- /dev/null +++ b/include/power/max77693_fg.h @@ -0,0 +1,49 @@ +/* + * Copyright (C) 2013 Samsung Electronics + * Piotr Wilczek + * + * 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_ */ diff --git a/include/power/max77693_muic.h b/include/power/max77693_muic.h new file mode 100644 index 0000000000..a2c29eb6ce --- /dev/null +++ b/include/power/max77693_muic.h @@ -0,0 +1,74 @@ +/* + * Copyright (C) 2013 Samsung Electronics + * Piotr Wilczek + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __MAX77693_MUIC_H_ +#define __MAX77693_MUIC_H_ + +#include + +/* + * 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_ */ diff --git a/include/power/max77693_pmic.h b/include/power/max77693_pmic.h new file mode 100644 index 0000000000..616d051f17 --- /dev/null +++ b/include/power/max77693_pmic.h @@ -0,0 +1,43 @@ +/* + * Copyright (C) 2013 Samsung Electronics + * Piotr Wilczek + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __MAX77693_PMIC_H_ +#define __MAX77693_PMIC_H_ + +#include + +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_ */ -- 2.25.1