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 <p.wilczek@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
diff --git a/drivers/power/mfd/Makefile b/drivers/power/mfd/Makefile
new file mode 100644
index 0000000..76a05da
--- /dev/null
+++ b/drivers/power/mfd/Makefile
@@ -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
+
+########################################################################
diff --git a/drivers/power/mfd/fg_max77693.c b/drivers/power/mfd/fg_max77693.c
new file mode 100644
index 0000000..4519fed
--- /dev/null
+++ b/drivers/power/mfd/fg_max77693.c
@@ -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;
+}
diff --git a/drivers/power/mfd/muic_max77693.c b/drivers/power/mfd/muic_max77693.c
new file mode 100644
index 0000000..e71012d
--- /dev/null
+++ b/drivers/power/mfd/muic_max77693.c
@@ -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;
+}
diff --git a/drivers/power/mfd/pmic_max77693.c b/drivers/power/mfd/pmic_max77693.c
new file mode 100644
index 0000000..1a4416b
--- /dev/null
+++ b/drivers/power/mfd/pmic_max77693.c
@@ -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;
+}