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@@ -0,0 +1,666 @@
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+/*
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+ * Power supply driver for the Active-semi ACT8945A PMIC
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+ *
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+ * Copyright (C) 2015 Atmel Corporation
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+ *
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+ * Author: Wenyou Yang <wenyou.yang@atmel.com>
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2 as
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+ * published by the Free Software Foundation.
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+ *
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+ */
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+#include <linux/interrupt.h>
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+#include <linux/module.h>
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+#include <linux/of.h>
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+#include <linux/of_irq.h>
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+#include <linux/platform_device.h>
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+#include <linux/power_supply.h>
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+#include <linux/regmap.h>
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+#include <linux/gpio/consumer.h>
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+
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+static const char *act8945a_charger_model = "ACT8945A";
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+static const char *act8945a_charger_manufacturer = "Active-semi";
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+
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+/**
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+ * ACT8945A Charger Register Map
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+ */
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+
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+/* 0x70: Reserved */
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+#define ACT8945A_APCH_CFG 0x71
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+#define ACT8945A_APCH_STATUS 0x78
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+#define ACT8945A_APCH_CTRL 0x79
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+#define ACT8945A_APCH_STATE 0x7A
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+
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+/* ACT8945A_APCH_CFG */
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+#define APCH_CFG_OVPSET (0x3 << 0)
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+#define APCH_CFG_OVPSET_6V6 (0x0 << 0)
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+#define APCH_CFG_OVPSET_7V (0x1 << 0)
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+#define APCH_CFG_OVPSET_7V5 (0x2 << 0)
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+#define APCH_CFG_OVPSET_8V (0x3 << 0)
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+#define APCH_CFG_PRETIMO (0x3 << 2)
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+#define APCH_CFG_PRETIMO_40_MIN (0x0 << 2)
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+#define APCH_CFG_PRETIMO_60_MIN (0x1 << 2)
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+#define APCH_CFG_PRETIMO_80_MIN (0x2 << 2)
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+#define APCH_CFG_PRETIMO_DISABLED (0x3 << 2)
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+#define APCH_CFG_TOTTIMO (0x3 << 4)
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+#define APCH_CFG_TOTTIMO_3_HOUR (0x0 << 4)
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+#define APCH_CFG_TOTTIMO_4_HOUR (0x1 << 4)
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+#define APCH_CFG_TOTTIMO_5_HOUR (0x2 << 4)
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+#define APCH_CFG_TOTTIMO_DISABLED (0x3 << 4)
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+#define APCH_CFG_SUSCHG (0x1 << 7)
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+
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+#define APCH_STATUS_CHGDAT BIT(0)
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+#define APCH_STATUS_INDAT BIT(1)
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+#define APCH_STATUS_TEMPDAT BIT(2)
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+#define APCH_STATUS_TIMRDAT BIT(3)
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+#define APCH_STATUS_CHGSTAT BIT(4)
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+#define APCH_STATUS_INSTAT BIT(5)
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+#define APCH_STATUS_TEMPSTAT BIT(6)
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+#define APCH_STATUS_TIMRSTAT BIT(7)
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+
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+#define APCH_CTRL_CHGEOCOUT BIT(0)
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+#define APCH_CTRL_INDIS BIT(1)
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+#define APCH_CTRL_TEMPOUT BIT(2)
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+#define APCH_CTRL_TIMRPRE BIT(3)
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+#define APCH_CTRL_CHGEOCIN BIT(4)
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+#define APCH_CTRL_INCON BIT(5)
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+#define APCH_CTRL_TEMPIN BIT(6)
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+#define APCH_CTRL_TIMRTOT BIT(7)
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+
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+#define APCH_STATE_ACINSTAT (0x1 << 1)
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+#define APCH_STATE_CSTATE (0x3 << 4)
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+#define APCH_STATE_CSTATE_SHIFT 4
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+#define APCH_STATE_CSTATE_DISABLED 0x00
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+#define APCH_STATE_CSTATE_EOC 0x01
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+#define APCH_STATE_CSTATE_FAST 0x02
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+#define APCH_STATE_CSTATE_PRE 0x03
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+
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+struct act8945a_charger {
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+ struct power_supply *psy;
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+ struct power_supply_desc desc;
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+ struct regmap *regmap;
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+ struct work_struct work;
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+
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+ bool init_done;
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+ struct gpio_desc *lbo_gpio;
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+ struct gpio_desc *chglev_gpio;
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+};
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+
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+static int act8945a_get_charger_state(struct regmap *regmap, int *val)
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+{
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+ int ret;
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+ unsigned int status, state;
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+
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+ ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status);
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+ if (ret < 0)
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+ return ret;
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+
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+ ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state);
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+ if (ret < 0)
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+ return ret;
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+
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+ state &= APCH_STATE_CSTATE;
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+ state >>= APCH_STATE_CSTATE_SHIFT;
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+
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+ switch (state) {
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+ case APCH_STATE_CSTATE_PRE:
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+ case APCH_STATE_CSTATE_FAST:
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+ *val = POWER_SUPPLY_STATUS_CHARGING;
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+ break;
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+ case APCH_STATE_CSTATE_EOC:
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+ if (status & APCH_STATUS_CHGDAT)
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+ *val = POWER_SUPPLY_STATUS_FULL;
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+ else
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+ *val = POWER_SUPPLY_STATUS_CHARGING;
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+ break;
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+ case APCH_STATE_CSTATE_DISABLED:
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+ default:
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+ if (!(status & APCH_STATUS_INDAT))
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+ *val = POWER_SUPPLY_STATUS_DISCHARGING;
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+ else
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+ *val = POWER_SUPPLY_STATUS_NOT_CHARGING;
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+ break;
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+ }
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+
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+ return 0;
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+}
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+
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+static int act8945a_get_charge_type(struct regmap *regmap, int *val)
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+{
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+ int ret;
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+ unsigned int status, state;
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+
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+ ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status);
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+ if (ret < 0)
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+ return ret;
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+
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+ ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state);
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+ if (ret < 0)
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+ return ret;
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+
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+ state &= APCH_STATE_CSTATE;
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+ state >>= APCH_STATE_CSTATE_SHIFT;
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+
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+ switch (state) {
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+ case APCH_STATE_CSTATE_PRE:
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+ *val = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
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+ break;
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+ case APCH_STATE_CSTATE_FAST:
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+ *val = POWER_SUPPLY_CHARGE_TYPE_FAST;
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+ break;
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+ case APCH_STATE_CSTATE_EOC:
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+ *val = POWER_SUPPLY_CHARGE_TYPE_NONE;
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+ break;
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+ case APCH_STATE_CSTATE_DISABLED:
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+ default:
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+ if (!(status & APCH_STATUS_INDAT))
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+ *val = POWER_SUPPLY_CHARGE_TYPE_NONE;
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+ else
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+ *val = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
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+ break;
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+ }
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+
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+ return 0;
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+}
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+
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+static int act8945a_get_battery_health(struct regmap *regmap, int *val)
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+{
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+ int ret;
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+ unsigned int status, state, config;
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+
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+ ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status);
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+ if (ret < 0)
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+ return ret;
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+
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+ ret = regmap_read(regmap, ACT8945A_APCH_CFG, &config);
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+ if (ret < 0)
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+ return ret;
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+
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+ ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state);
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+ if (ret < 0)
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+ return ret;
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+
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+ state &= APCH_STATE_CSTATE;
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+ state >>= APCH_STATE_CSTATE_SHIFT;
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+
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+ switch (state) {
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+ case APCH_STATE_CSTATE_DISABLED:
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+ if (config & APCH_CFG_SUSCHG) {
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+ *val = POWER_SUPPLY_HEALTH_UNKNOWN;
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+ } else if (status & APCH_STATUS_INDAT) {
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+ if (!(status & APCH_STATUS_TEMPDAT))
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+ *val = POWER_SUPPLY_HEALTH_OVERHEAT;
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+ else if (status & APCH_STATUS_TIMRDAT)
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+ *val = POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE;
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+ else
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+ *val = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
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+ } else {
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+ *val = POWER_SUPPLY_HEALTH_GOOD;
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+ }
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+ break;
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+ case APCH_STATE_CSTATE_PRE:
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+ case APCH_STATE_CSTATE_FAST:
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+ case APCH_STATE_CSTATE_EOC:
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+ default:
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+ *val = POWER_SUPPLY_HEALTH_GOOD;
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+ break;
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+ }
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+
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+ return 0;
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+}
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+
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+static int act8945a_get_capacity_level(struct act8945a_charger *charger,
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+ struct regmap *regmap, int *val)
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+{
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+ int ret;
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+ unsigned int status, state, config;
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+ int lbo_level = gpiod_get_value(charger->lbo_gpio);
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+
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+ ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status);
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+ if (ret < 0)
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+ return ret;
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+
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+ ret = regmap_read(regmap, ACT8945A_APCH_CFG, &config);
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+ if (ret < 0)
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+ return ret;
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+
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+ ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state);
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+ if (ret < 0)
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+ return ret;
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+
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+ state &= APCH_STATE_CSTATE;
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+ state >>= APCH_STATE_CSTATE_SHIFT;
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+
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+ switch (state) {
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+ case APCH_STATE_CSTATE_PRE:
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+ *val = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
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+ break;
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+ case APCH_STATE_CSTATE_FAST:
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+ if (lbo_level)
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+ *val = POWER_SUPPLY_CAPACITY_LEVEL_HIGH;
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+ else
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+ *val = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
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+ break;
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+ case APCH_STATE_CSTATE_EOC:
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+ if (status & APCH_STATUS_CHGDAT)
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+ *val = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
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+ else
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+ *val = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
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+ break;
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+ case APCH_STATE_CSTATE_DISABLED:
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+ default:
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+ if (config & APCH_CFG_SUSCHG) {
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+ *val = POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN;
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+ } else {
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+ *val = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
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+ if (!(status & APCH_STATUS_INDAT)) {
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+ if (!lbo_level)
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+ *val = POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL;
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+ }
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+ }
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+ break;
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+ }
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+
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+ return 0;
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+}
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+
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+#define MAX_CURRENT_USB_HIGH 450000
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+#define MAX_CURRENT_USB_LOW 90000
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+#define MAX_CURRENT_USB_PRE 45000
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+/*
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+ * Riset(K) = 2336 * (1V/Ichg(mA)) - 0.205
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+ * Riset = 2.43K
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+ */
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+#define MAX_CURRENT_AC_HIGH 886527
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+#define MAX_CURRENT_AC_LOW 117305
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+#define MAX_CURRENT_AC_HIGH_PRE 88653
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+#define MAX_CURRENT_AC_LOW_PRE 11731
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+
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+static int act8945a_get_current_max(struct act8945a_charger *charger,
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+ struct regmap *regmap, int *val)
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+{
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+ int ret;
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+ unsigned int status, state;
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+ unsigned int acin_state;
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+ int chgin_level = gpiod_get_value(charger->chglev_gpio);
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+
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+ ret = regmap_read(regmap, ACT8945A_APCH_STATUS, &status);
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+ if (ret < 0)
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+ return ret;
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+
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+ ret = regmap_read(regmap, ACT8945A_APCH_STATE, &state);
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+ if (ret < 0)
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+ return ret;
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+
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+ acin_state = (state & APCH_STATE_ACINSTAT) >> 1;
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+
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+ state &= APCH_STATE_CSTATE;
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+ state >>= APCH_STATE_CSTATE_SHIFT;
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+
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+ switch (state) {
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+ case APCH_STATE_CSTATE_PRE:
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+ if (acin_state) {
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+ if (chgin_level)
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+ *val = MAX_CURRENT_AC_HIGH_PRE;
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+ else
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+ *val = MAX_CURRENT_AC_LOW_PRE;
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+ } else {
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+ *val = MAX_CURRENT_USB_PRE;
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+ }
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+ break;
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+ case APCH_STATE_CSTATE_FAST:
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+ if (acin_state) {
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+ if (chgin_level)
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+ *val = MAX_CURRENT_AC_HIGH;
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+ else
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+ *val = MAX_CURRENT_AC_LOW;
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+ } else {
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+ if (chgin_level)
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+ *val = MAX_CURRENT_USB_HIGH;
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+ else
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+ *val = MAX_CURRENT_USB_LOW;
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+ }
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+ break;
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+ case APCH_STATE_CSTATE_EOC:
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+ case APCH_STATE_CSTATE_DISABLED:
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+ default:
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+ *val = 0;
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+ break;
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+ }
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+
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+ return 0;
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+}
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+
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+static enum power_supply_property act8945a_charger_props[] = {
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+ POWER_SUPPLY_PROP_STATUS,
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+ POWER_SUPPLY_PROP_CHARGE_TYPE,
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+ POWER_SUPPLY_PROP_TECHNOLOGY,
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+ POWER_SUPPLY_PROP_HEALTH,
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+ POWER_SUPPLY_PROP_CAPACITY_LEVEL,
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+ POWER_SUPPLY_PROP_CURRENT_MAX,
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+ POWER_SUPPLY_PROP_MODEL_NAME,
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+ POWER_SUPPLY_PROP_MANUFACTURER
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+};
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+
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+static int act8945a_charger_get_property(struct power_supply *psy,
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+ enum power_supply_property prop,
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+ union power_supply_propval *val)
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+{
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+ struct act8945a_charger *charger = power_supply_get_drvdata(psy);
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+ struct regmap *regmap = charger->regmap;
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+ int ret = 0;
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+
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+ switch (prop) {
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+ case POWER_SUPPLY_PROP_STATUS:
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+ ret = act8945a_get_charger_state(regmap, &val->intval);
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+ break;
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+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
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+ ret = act8945a_get_charge_type(regmap, &val->intval);
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+ break;
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+ case POWER_SUPPLY_PROP_TECHNOLOGY:
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+ val->intval = POWER_SUPPLY_TECHNOLOGY_LION;
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+ break;
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+ case POWER_SUPPLY_PROP_HEALTH:
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+ ret = act8945a_get_battery_health(regmap, &val->intval);
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+ break;
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+ case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
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+ ret = act8945a_get_capacity_level(charger,
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+ regmap, &val->intval);
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+ break;
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+ case POWER_SUPPLY_PROP_CURRENT_MAX:
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+ ret = act8945a_get_current_max(charger,
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+ regmap, &val->intval);
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+ break;
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+ case POWER_SUPPLY_PROP_MODEL_NAME:
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+ val->strval = act8945a_charger_model;
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+ break;
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+ case POWER_SUPPLY_PROP_MANUFACTURER:
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+ val->strval = act8945a_charger_manufacturer;
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+ break;
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+ default:
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+ return -EINVAL;
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+ }
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+
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+ return ret;
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+}
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+
|
|
|
+static int act8945a_enable_interrupt(struct act8945a_charger *charger)
|
|
|
+{
|
|
|
+ struct regmap *regmap = charger->regmap;
|
|
|
+ unsigned char ctrl;
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ ctrl = APCH_CTRL_CHGEOCOUT | APCH_CTRL_CHGEOCIN |
|
|
|
+ APCH_CTRL_INDIS | APCH_CTRL_INCON |
|
|
|
+ APCH_CTRL_TEMPOUT | APCH_CTRL_TEMPIN |
|
|
|
+ APCH_CTRL_TIMRPRE | APCH_CTRL_TIMRTOT;
|
|
|
+ ret = regmap_write(regmap, ACT8945A_APCH_CTRL, ctrl);
|
|
|
+ if (ret)
|
|
|
+ return ret;
|
|
|
+
|
|
|
+ ctrl = APCH_STATUS_CHGSTAT | APCH_STATUS_INSTAT |
|
|
|
+ APCH_STATUS_TEMPSTAT | APCH_STATUS_TIMRSTAT;
|
|
|
+ ret = regmap_write(regmap, ACT8945A_APCH_STATUS, ctrl);
|
|
|
+ if (ret)
|
|
|
+ return ret;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static unsigned int act8945a_set_supply_type(struct act8945a_charger *charger,
|
|
|
+ unsigned int *type)
|
|
|
+{
|
|
|
+ unsigned int status, state;
|
|
|
+ int ret;
|
|
|
+
|
|
|
+ ret = regmap_read(charger->regmap, ACT8945A_APCH_STATUS, &status);
|
|
|
+ if (ret < 0)
|
|
|
+ return ret;
|
|
|
+
|
|
|
+ ret = regmap_read(charger->regmap, ACT8945A_APCH_STATE, &state);
|
|
|
+ if (ret < 0)
|
|
|
+ return ret;
|
|
|
+
|
|
|
+ if (status & APCH_STATUS_INDAT) {
|
|
|
+ if (state & APCH_STATE_ACINSTAT)
|
|
|
+ *type = POWER_SUPPLY_TYPE_MAINS;
|
|
|
+ else
|
|
|
+ *type = POWER_SUPPLY_TYPE_USB;
|
|
|
+ } else {
|
|
|
+ *type = POWER_SUPPLY_TYPE_BATTERY;
|
|
|
+ }
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static void act8945a_work(struct work_struct *work)
|
|
|
+{
|
|
|
+ struct act8945a_charger *charger =
|
|
|
+ container_of(work, struct act8945a_charger, work);
|
|
|
+
|
|
|
+ act8945a_set_supply_type(charger, &charger->desc.type);
|
|
|
+
|
|
|
+ power_supply_changed(charger->psy);
|
|
|
+}
|
|
|
+
|
|
|
+static irqreturn_t act8945a_status_changed(int irq, void *dev_id)
|
|
|
+{
|
|
|
+ struct act8945a_charger *charger = dev_id;
|
|
|
+
|
|
|
+ if (charger->init_done)
|
|
|
+ schedule_work(&charger->work);
|
|
|
+
|
|
|
+ return IRQ_HANDLED;
|
|
|
+}
|
|
|
+
|
|
|
+#define DEFAULT_TOTAL_TIME_OUT 3
|
|
|
+#define DEFAULT_PRE_TIME_OUT 40
|
|
|
+#define DEFAULT_INPUT_OVP_THRESHOLD 6600
|
|
|
+
|
|
|
+static int act8945a_charger_config(struct device *dev,
|
|
|
+ struct act8945a_charger *charger)
|
|
|
+{
|
|
|
+ struct device_node *np = dev->of_node;
|
|
|
+ struct regmap *regmap = charger->regmap;
|
|
|
+
|
|
|
+ u32 total_time_out;
|
|
|
+ u32 pre_time_out;
|
|
|
+ u32 input_voltage_threshold;
|
|
|
+ int err, ret;
|
|
|
+
|
|
|
+ unsigned int tmp;
|
|
|
+ unsigned int value = 0;
|
|
|
+
|
|
|
+ if (!np) {
|
|
|
+ dev_err(dev, "no charger of node\n");
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = regmap_read(regmap, ACT8945A_APCH_CFG, &tmp);
|
|
|
+ if (ret)
|
|
|
+ return ret;
|
|
|
+
|
|
|
+ if (tmp & APCH_CFG_SUSCHG) {
|
|
|
+ value |= APCH_CFG_SUSCHG;
|
|
|
+ dev_info(dev, "have been suspended\n");
|
|
|
+ }
|
|
|
+
|
|
|
+ charger->lbo_gpio = devm_gpiod_get_optional(dev, "active-semi,lbo",
|
|
|
+ GPIOD_IN);
|
|
|
+ if (IS_ERR(charger->lbo_gpio)) {
|
|
|
+ err = PTR_ERR(charger->lbo_gpio);
|
|
|
+ dev_err(dev, "unable to claim gpio \"lbo\": %d\n", err);
|
|
|
+ return err;
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = devm_request_irq(dev, gpiod_to_irq(charger->lbo_gpio),
|
|
|
+ act8945a_status_changed,
|
|
|
+ (IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING),
|
|
|
+ "act8945a_lbo_detect", charger);
|
|
|
+ if (ret)
|
|
|
+ dev_info(dev, "failed to request gpio \"lbo\" IRQ\n");
|
|
|
+
|
|
|
+ charger->chglev_gpio = devm_gpiod_get_optional(dev,
|
|
|
+ "active-semi,chglev",
|
|
|
+ GPIOD_IN);
|
|
|
+ if (IS_ERR(charger->chglev_gpio)) {
|
|
|
+ err = PTR_ERR(charger->chglev_gpio);
|
|
|
+ dev_err(dev, "unable to claim gpio \"chglev\": %d\n", err);
|
|
|
+ return err;
|
|
|
+ }
|
|
|
+
|
|
|
+ if (of_property_read_u32(np,
|
|
|
+ "active-semi,input-voltage-threshold-microvolt",
|
|
|
+ &input_voltage_threshold))
|
|
|
+ input_voltage_threshold = DEFAULT_INPUT_OVP_THRESHOLD;
|
|
|
+
|
|
|
+ if (of_property_read_u32(np,
|
|
|
+ "active-semi,precondition-timeout",
|
|
|
+ &pre_time_out))
|
|
|
+ pre_time_out = DEFAULT_PRE_TIME_OUT;
|
|
|
+
|
|
|
+ if (of_property_read_u32(np, "active-semi,total-timeout",
|
|
|
+ &total_time_out))
|
|
|
+ total_time_out = DEFAULT_TOTAL_TIME_OUT;
|
|
|
+
|
|
|
+ switch (input_voltage_threshold) {
|
|
|
+ case 8000:
|
|
|
+ value |= APCH_CFG_OVPSET_8V;
|
|
|
+ break;
|
|
|
+ case 7500:
|
|
|
+ value |= APCH_CFG_OVPSET_7V5;
|
|
|
+ break;
|
|
|
+ case 7000:
|
|
|
+ value |= APCH_CFG_OVPSET_7V;
|
|
|
+ break;
|
|
|
+ case 6600:
|
|
|
+ default:
|
|
|
+ value |= APCH_CFG_OVPSET_6V6;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ switch (pre_time_out) {
|
|
|
+ case 60:
|
|
|
+ value |= APCH_CFG_PRETIMO_60_MIN;
|
|
|
+ break;
|
|
|
+ case 80:
|
|
|
+ value |= APCH_CFG_PRETIMO_80_MIN;
|
|
|
+ break;
|
|
|
+ case 0:
|
|
|
+ value |= APCH_CFG_PRETIMO_DISABLED;
|
|
|
+ break;
|
|
|
+ case 40:
|
|
|
+ default:
|
|
|
+ value |= APCH_CFG_PRETIMO_40_MIN;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ switch (total_time_out) {
|
|
|
+ case 4:
|
|
|
+ value |= APCH_CFG_TOTTIMO_4_HOUR;
|
|
|
+ break;
|
|
|
+ case 5:
|
|
|
+ value |= APCH_CFG_TOTTIMO_5_HOUR;
|
|
|
+ break;
|
|
|
+ case 0:
|
|
|
+ value |= APCH_CFG_TOTTIMO_DISABLED;
|
|
|
+ break;
|
|
|
+ case 3:
|
|
|
+ default:
|
|
|
+ value |= APCH_CFG_TOTTIMO_3_HOUR;
|
|
|
+ break;
|
|
|
+ }
|
|
|
+
|
|
|
+ return regmap_write(regmap, ACT8945A_APCH_CFG, value);
|
|
|
+}
|
|
|
+
|
|
|
+static int act8945a_charger_probe(struct platform_device *pdev)
|
|
|
+{
|
|
|
+ struct act8945a_charger *charger;
|
|
|
+ struct power_supply_config psy_cfg = {};
|
|
|
+ int irq, ret;
|
|
|
+
|
|
|
+ charger = devm_kzalloc(&pdev->dev, sizeof(*charger), GFP_KERNEL);
|
|
|
+ if (!charger)
|
|
|
+ return -ENOMEM;
|
|
|
+
|
|
|
+ charger->regmap = dev_get_regmap(pdev->dev.parent, NULL);
|
|
|
+ if (!charger->regmap) {
|
|
|
+ dev_err(&pdev->dev, "Parent did not provide regmap\n");
|
|
|
+ return -EINVAL;
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = act8945a_charger_config(&pdev->dev, charger);
|
|
|
+ if (ret)
|
|
|
+ return ret;
|
|
|
+
|
|
|
+ irq = of_irq_get(pdev->dev.of_node, 0);
|
|
|
+ if (irq == -EPROBE_DEFER) {
|
|
|
+ dev_err(&pdev->dev, "failed to find IRQ number\n");
|
|
|
+ return -EPROBE_DEFER;
|
|
|
+ }
|
|
|
+
|
|
|
+ ret = devm_request_irq(&pdev->dev, irq, act8945a_status_changed,
|
|
|
+ IRQF_TRIGGER_FALLING, "act8945a_interrupt",
|
|
|
+ charger);
|
|
|
+ if (ret) {
|
|
|
+ dev_err(&pdev->dev, "failed to request nIRQ pin IRQ\n");
|
|
|
+ return ret;
|
|
|
+ }
|
|
|
+
|
|
|
+ charger->desc.name = "act8945a-charger";
|
|
|
+ charger->desc.get_property = act8945a_charger_get_property;
|
|
|
+ charger->desc.properties = act8945a_charger_props;
|
|
|
+ charger->desc.num_properties = ARRAY_SIZE(act8945a_charger_props);
|
|
|
+
|
|
|
+ ret = act8945a_set_supply_type(charger, &charger->desc.type);
|
|
|
+ if (ret)
|
|
|
+ return -EINVAL;
|
|
|
+
|
|
|
+ psy_cfg.of_node = pdev->dev.of_node;
|
|
|
+ psy_cfg.drv_data = charger;
|
|
|
+
|
|
|
+ charger->psy = devm_power_supply_register(&pdev->dev,
|
|
|
+ &charger->desc,
|
|
|
+ &psy_cfg);
|
|
|
+ if (IS_ERR(charger->psy)) {
|
|
|
+ dev_err(&pdev->dev, "failed to register power supply\n");
|
|
|
+ return PTR_ERR(charger->psy);
|
|
|
+ }
|
|
|
+
|
|
|
+ platform_set_drvdata(pdev, charger);
|
|
|
+
|
|
|
+ INIT_WORK(&charger->work, act8945a_work);
|
|
|
+
|
|
|
+ ret = act8945a_enable_interrupt(charger);
|
|
|
+ if (ret)
|
|
|
+ return -EIO;
|
|
|
+
|
|
|
+ charger->init_done = true;
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static int act8945a_charger_remove(struct platform_device *pdev)
|
|
|
+{
|
|
|
+ struct act8945a_charger *charger = platform_get_drvdata(pdev);
|
|
|
+
|
|
|
+ charger->init_done = false;
|
|
|
+ cancel_work_sync(&charger->work);
|
|
|
+
|
|
|
+ return 0;
|
|
|
+}
|
|
|
+
|
|
|
+static struct platform_driver act8945a_charger_driver = {
|
|
|
+ .driver = {
|
|
|
+ .name = "act8945a-charger",
|
|
|
+ },
|
|
|
+ .probe = act8945a_charger_probe,
|
|
|
+ .remove = act8945a_charger_remove,
|
|
|
+};
|
|
|
+module_platform_driver(act8945a_charger_driver);
|
|
|
+
|
|
|
+MODULE_DESCRIPTION("Active-semi ACT8945A ActivePath charger driver");
|
|
|
+MODULE_AUTHOR("Wenyou Yang <wenyou.yang@atmel.com>");
|
|
|
+MODULE_LICENSE("GPL");
|