@@ -565,6 +565,13 @@ config CHARGER_MAX77650
Say Y to enable support for the battery charger control of MAX77650
PMICs.
+config CHARGER_MAX77658
+ tristate "Analog Devices MAX77654/58/59 battery charger driver"
+ depends on MFD_MAX77658
+ help
+ Say Y to enable support for the battery charger control of
+ MAX77654/58/59 PMIC.
+
config CHARGER_MAX77693
tristate "Maxim MAX77693 battery charger driver"
depends on MFD_MAX77693
@@ -76,6 +76,7 @@ obj-$(CONFIG_CHARGER_LTC4162L) += ltc4162-l-charger.o
obj-$(CONFIG_CHARGER_MAX14577) += max14577_charger.o
obj-$(CONFIG_CHARGER_DETECTOR_MAX14656) += max14656_charger_detector.o
obj-$(CONFIG_CHARGER_MAX77650) += max77650-charger.o
+obj-$(CONFIG_CHARGER_MAX77658) += max77658-charger.o
obj-$(CONFIG_CHARGER_MAX77693) += max77693_charger.o
obj-$(CONFIG_CHARGER_MAX77976) += max77976_charger.o
obj-$(CONFIG_CHARGER_MAX8997) += max8997_charger.o
new file mode 100644
@@ -0,0 +1,844 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (c) 2023 Analog Devices, Inc.
+ * ADI charger driver for the MAX77654/58/59
+ */
+
+#include <linux/bitfield.h>
+#include <linux/interrupt.h>
+#include <linux/mfd/max77658.h>
+#include <linux/module.h>
+#include <linux/of_irq.h>
+#include <linux/platform_device.h>
+#include <linux/power_supply.h>
+#include <linux/regmap.h>
+
+#define MAX77659_CHG_IRQ_MAX 5
+
+/* Default value for fast charge timer, in hours */
+#define MAX77658_FAST_CHG_TIMER_DEFAULT 5
+/* Default value for topoff timer, in minutes */
+#define MAX77658_TOPOFF_TIMER_DEFAULT 30
+
+#define MAX77658_CHARGER_CURRENT_MAX 300000
+#define MAX77658_CHARGER_CURRENT_MIN 7500
+#define MAX77658_CHARGER_CURRENT_STEP 7500
+#define MAX77658_CNFG_B_ICHGIN_LIM_MAX 475000
+#define MAX77658_CNFG_B_ICHGIN_LIM_MIN 95000
+#define MAX77658_CNFG_B_ICHGIN_LIM_STEP 95000
+#define MAX77658_CNFG_B_ICHGIN_LIM_REG_MAX 4
+#define MAX77658_TOPOFF_TIMER_STEP 5
+
+#define MAX77658_REG_STAT_CHG_A 0x02
+#define MAX77658_REG_STAT_CHG_B 0x03
+#define MAX77658_REG_CNFG_CHG_A 0x20
+#define MAX77658_REG_CNFG_CHG_B 0x21
+#define MAX77658_REG_CNFG_CHG_C 0x22
+#define MAX77658_REG_CNFG_CHG_D 0x23
+#define MAX77658_REG_CNFG_CHG_E 0x24
+#define MAX77658_REG_CNFG_CHG_F 0x25
+#define MAX77658_REG_CNFG_CHG_G 0x26
+#define MAX77658_REG_CNFG_CHG_H 0x27
+#define MAX77658_REG_CNFG_CHG_I 0x28
+
+#define MAX77658_BIT_STAT_A_THM_DTLS GENMASK(2, 0)
+#define MAX77658_BIT_STAT_A_TJ_REG_STAT BIT(3)
+#define MAX77658_BIT_STAT_A_VSYSY_MIN_STAT BIT(4)
+#define MAX77658_BIT_STAT_A_ICHGIN_LIM_STAT BIT(5)
+#define MAX77658_BIT_STAT_A_VCHGIN_MIN_STAT BIT(6)
+#define MAX77658_BIT_STAT_B_CHG BIT(1)
+#define MAX77658_BIT_STAT_B_CHGIN_DTSL GENMASK(3, 2)
+#define MAX77658_BIT_STAT_B_CHG_DTLS GENMASK(7, 4)
+#define MAX77658_BIT_CNFG_B_CHG_EN BIT(0)
+#define MAX77658_BIT_CNFG_B_ICHGIN_LIM GENMASK(4, 2)
+#define MAX77658_BIT_CNFG_C_TOPOFFTIMER GENMASK(2, 0)
+#define MAX77658_BIT_CNFG_E_TFASTCHG GENMASK(1, 0)
+#define MAX77658_BIT_CNFG_E_CC GENMASK(7, 2)
+#define MAX77658_BIT_CNFG_G_CHG_CV GENMASK(7, 2)
+
+enum {
+ MAX77658_CHG_DTLS_OFF,
+ MAX77658_CHG_DTLS_PREQUAL,
+ MAX77658_CHG_DTLS_FASTCHARGE_CC,
+ MAX77658_CHG_DTLS_JEITA_FASTCHARGE_CC,
+ MAX77658_CHG_DTLS_FASTCHARGE_CV,
+ MAX77658_CHG_DTLS_JEITA_FASTCHARGE_CV,
+ MAX77658_CHG_DTLS_TOPOFF,
+ MAX77658_CHG_DTLS_JEITA_TOPOFF,
+ MAX77658_CHG_DTLS_DONE,
+ MAX77658_CHG_DTLS_JEITA_DONE,
+ MAX77658_CHG_DTLS_OFF_TIMER_FAULT,
+ MAX77658_CHG_DTLS_OFF_CHARGE_TIMER_FAULT,
+ MAX77658_CHG_DTLS_OFF_BATTERY_TEMP_FAULT,
+ MAX77658_CHG_DTLS_RESERVED_13,
+};
+
+enum {
+ MAX77658_CHG_IRQ_THM_I,
+ MAX77658_CHG_IRQ_CHG_I,
+ MAX77658_CHG_IRQ_CHGIN_I,
+ MAX77658_CHG_IRQ_TJ_REG_I,
+ MAX77658_CHG_IRQ_SYS_CTRL_I,
+ MAX77658_CHG_IRQ_CHGIN_CTRL_I,
+ MAX77658_CHG_IRQ_SYS_CNFG_I,
+ MAX77658_CHG_IRQ_MAX,
+};
+
+struct max77658_charger {
+ struct device *dev;
+ struct max77658_dev *max77658;
+ struct regmap *regmap;
+
+ struct power_supply *psy_chg;
+ struct power_supply_desc psy_chg_d;
+
+ int irq;
+ int irq_arr[MAX77658_CHG_IRQ_MAX];
+ int irq_mask;
+
+ struct delayed_work irq_work;
+
+ int present;
+ int health;
+ int status;
+ int charge_type;
+
+ unsigned int fast_charge_current_ua;
+ unsigned int input_current_limit_ua;
+};
+
+static int max77658_set_input_current_limit(struct max77658_charger *charger,
+ int input_current)
+{
+ u8 reg_data = 0;
+
+ input_current = clamp_val(input_current, MAX77658_CNFG_B_ICHGIN_LIM_MIN,
+ MAX77658_CNFG_B_ICHGIN_LIM_MAX);
+ if (charger->max77658->id == ID_MAX77658) {
+ reg_data = MAX77658_CNFG_B_ICHGIN_LIM_REG_MAX + 1
+ - DIV_ROUND_UP(input_current,
+ MAX77658_CNFG_B_ICHGIN_LIM_STEP);
+ } else {
+ reg_data = DIV_ROUND_UP(input_current,
+ MAX77658_CNFG_B_ICHGIN_LIM_STEP) - 1;
+ }
+
+ reg_data = FIELD_PREP(MAX77658_BIT_CNFG_B_ICHGIN_LIM, reg_data);
+ return regmap_update_bits(charger->regmap, MAX77658_REG_CNFG_CHG_B,
+ MAX77658_BIT_CNFG_B_ICHGIN_LIM, reg_data);
+}
+
+static int max77658_get_input_current_limit(struct max77658_charger *charger,
+ int *get_current)
+{
+ unsigned int reg_data = 0;
+ int ret;
+
+ ret = regmap_read(charger->regmap, MAX77658_REG_CNFG_CHG_B, ®_data);
+ if (ret)
+ return ret;
+
+ reg_data = FIELD_GET(MAX77658_BIT_CNFG_B_ICHGIN_LIM, reg_data);
+
+ if (charger->max77658->id == ID_MAX77658) {
+ *get_current = (MAX77658_CNFG_B_ICHGIN_LIM_REG_MAX + 1
+ - reg_data) * MAX77658_CNFG_B_ICHGIN_LIM_STEP;
+ } else {
+ *get_current = (reg_data + 1) * MAX77658_CNFG_B_ICHGIN_LIM_STEP;
+ }
+
+ return 0;
+}
+
+static int max77658_set_charge_current(struct max77658_charger *charger,
+ int fast_charge_current_ua)
+{
+ unsigned int reg_data;
+
+ fast_charge_current_ua = clamp_val(fast_charge_current_ua,
+ MAX77658_CHARGER_CURRENT_MIN,
+ MAX77658_CHARGER_CURRENT_MAX);
+ reg_data = fast_charge_current_ua / MAX77658_CHARGER_CURRENT_STEP - 1;
+ reg_data = FIELD_PREP(MAX77658_BIT_CNFG_E_CC, reg_data);
+
+ return regmap_update_bits(charger->regmap, MAX77658_REG_CNFG_CHG_E,
+ MAX77658_BIT_CNFG_E_CC, reg_data);
+}
+
+static int max77658_get_charge_current(struct max77658_charger *charger,
+ int *get_current)
+{
+ unsigned int reg_data, current_val;
+ int ret;
+
+ ret = regmap_read(charger->regmap, MAX77658_REG_CNFG_CHG_E, ®_data);
+ if (ret)
+ return ret;
+
+ reg_data = FIELD_GET(MAX77658_BIT_CNFG_E_CC, reg_data);
+ current_val = (reg_data + 1) * MAX77658_CHARGER_CURRENT_STEP;
+
+ *get_current = clamp_val(current_val, MAX77658_CHARGER_CURRENT_MIN,
+ MAX77658_CHARGER_CURRENT_MAX);
+
+ return 0;
+}
+
+static ssize_t max77658_device_attr_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count,
+ int (*fn)(struct max77658_charger *,
+ unsigned long))
+{
+ struct max77658_charger *charger = dev_get_drvdata(dev);
+ unsigned long val;
+ int ret;
+
+ ret = kstrtoul(buf, 10, &val);
+ if (ret)
+ return ret;
+
+ ret = fn(charger, val);
+ if (ret)
+ return ret;
+
+ return count;
+}
+
+static int max77658_set_topoff_timer(struct max77658_charger *charger,
+ unsigned long minutes)
+{
+ unsigned int reg_data;
+
+ minutes = clamp_val(minutes, 0, MAX77658_BIT_CNFG_C_TOPOFFTIMER
+ * MAX77658_TOPOFF_TIMER_STEP);
+ reg_data = FIELD_PREP(MAX77658_BIT_CNFG_C_TOPOFFTIMER,
+ minutes / MAX77658_TOPOFF_TIMER_STEP);
+
+ return regmap_update_bits(charger->regmap, MAX77658_REG_CNFG_CHG_C,
+ MAX77658_BIT_CNFG_C_TOPOFFTIMER, reg_data);
+}
+
+static ssize_t topoff_timer_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ return max77658_device_attr_store(dev, attr, buf, count,
+ max77658_set_topoff_timer);
+}
+
+static ssize_t topoff_timer_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct max77658_charger *charger = dev_get_drvdata(dev);
+ unsigned int reg_data, minutes;
+ int ret;
+
+ ret = regmap_read(charger->regmap, MAX77658_REG_CNFG_CHG_C,
+ ®_data);
+ if (ret)
+ return ret;
+
+ minutes = FIELD_GET(MAX77658_BIT_STAT_A_THM_DTLS, reg_data)
+ * MAX77658_TOPOFF_TIMER_STEP;
+
+ return scnprintf(buf, PAGE_SIZE, "%u\n", minutes);
+}
+
+static int max77658_set_fast_charge_timer(struct max77658_charger *charger,
+ unsigned long hours)
+{
+ unsigned int val;
+
+ if (hours == 0 || hours > 7)
+ val = 0x00;
+ else if (hours < 3)
+ val = 0x01;
+ else
+ val = DIV_ROUND_UP(hours - 1, 2);
+
+ return regmap_update_bits(charger->regmap, MAX77658_REG_CNFG_CHG_E,
+ MAX77658_BIT_CNFG_E_TFASTCHG, val);
+}
+
+static ssize_t fast_charge_timer_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ return max77658_device_attr_store(dev, attr, buf, count,
+ max77658_set_fast_charge_timer);
+}
+
+static ssize_t fast_charge_timer_show(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct max77658_charger *charger = dev_get_drvdata(dev);
+ unsigned int reg_data, hours;
+ int ret;
+
+ ret = regmap_read(charger->regmap, MAX77658_REG_CNFG_CHG_E,
+ ®_data);
+ if (ret)
+ return ret;
+
+ reg_data = FIELD_GET(MAX77658_BIT_CNFG_E_TFASTCHG, reg_data);
+
+ if (reg_data == 0)
+ hours = 0;
+ else
+ hours = reg_data * 2 + 1;
+
+ return scnprintf(buf, PAGE_SIZE, "%u\n", hours);
+}
+
+static DEVICE_ATTR_RW(fast_charge_timer);
+static DEVICE_ATTR_RW(topoff_timer);
+
+static int max77658_charger_initialize(struct max77658_charger *charger)
+{
+ int ret;
+
+ ret = max77658_set_charge_current(charger,
+ charger->fast_charge_current_ua);
+ if (ret)
+ return dev_err_probe(charger->dev, ret,
+ "Error in writing register CNFG_CHG_C\n");
+
+ ret = max77658_set_fast_charge_timer(charger,
+ MAX77658_FAST_CHG_TIMER_DEFAULT);
+ if (ret)
+ return dev_err_probe(charger->dev, ret,
+ "Error in writing register CNFG_CHG_E\n");
+
+ ret = max77658_set_topoff_timer(charger, MAX77658_TOPOFF_TIMER_DEFAULT);
+ if (ret)
+ return dev_err_probe(charger->dev, ret,
+ "Error in writing register CNFG_CHG_C\n");
+
+ if (charger->max77658->id == ID_MAX77659)
+ return 0;
+
+ return max77658_set_input_current_limit(charger,
+ charger->input_current_limit_ua);
+}
+
+static void max77658_charger_parse_dt(struct max77658_charger *charger)
+{
+ int ret;
+
+ ret = device_property_read_u32(charger->dev,
+ "adi,input-current-limit-microamp",
+ &charger->input_current_limit_ua);
+ if (ret) {
+ dev_dbg(charger->dev,
+ "Could not read input-current-limit DT property\n");
+ charger->input_current_limit_ua = 475000;
+ }
+}
+
+struct max77658_charger_status_map {
+ int health;
+ int status;
+ int charge_type;
+};
+
+#define STATUS_MAP(_MAX77658_CHG_DTLS, _health, _status, _charge_type) \
+ [MAX77658_CHG_DTLS_##_MAX77658_CHG_DTLS] = {\
+ .health = POWER_SUPPLY_HEALTH_##_health,\
+ .status = POWER_SUPPLY_STATUS_##_status,\
+ .charge_type = POWER_SUPPLY_CHARGE_TYPE_##_charge_type,\
+ }
+
+static struct max77658_charger_status_map max77658_charger_status_map[] = {
+ /* chg_details_xx, health, status, charge_type */
+ STATUS_MAP(OFF, UNKNOWN, NOT_CHARGING, NONE),
+ STATUS_MAP(PREQUAL, GOOD, CHARGING, TRICKLE),
+ STATUS_MAP(FASTCHARGE_CC, GOOD, CHARGING, FAST),
+ STATUS_MAP(JEITA_FASTCHARGE_CC, GOOD, CHARGING, FAST),
+ STATUS_MAP(FASTCHARGE_CV, GOOD, CHARGING, FAST),
+ STATUS_MAP(JEITA_FASTCHARGE_CV, GOOD, CHARGING, FAST),
+ STATUS_MAP(TOPOFF, GOOD, CHARGING, FAST),
+ STATUS_MAP(JEITA_TOPOFF, GOOD, CHARGING, FAST),
+ STATUS_MAP(DONE, GOOD, FULL, NONE),
+ STATUS_MAP(JEITA_DONE, GOOD, FULL, NONE),
+ STATUS_MAP(OFF_TIMER_FAULT, SAFETY_TIMER_EXPIRE, NOT_CHARGING, NONE),
+ STATUS_MAP(OFF_CHARGE_TIMER_FAULT, UNKNOWN, NOT_CHARGING, NONE),
+ STATUS_MAP(OFF_BATTERY_TEMP_FAULT, HOT, NOT_CHARGING, NONE),
+};
+
+static int max77658_charger_update(struct max77658_charger *charger)
+{
+ unsigned int stat_chg_b, chg_dtls;
+ int ret;
+
+ ret = regmap_read(charger->regmap, MAX77658_REG_STAT_CHG_B,
+ &stat_chg_b);
+ if (ret) {
+ charger->health = POWER_SUPPLY_HEALTH_UNKNOWN;
+ charger->status = POWER_SUPPLY_STATUS_UNKNOWN;
+ charger->charge_type = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
+ return ret;
+ }
+
+ charger->present = stat_chg_b & MAX77658_BIT_STAT_B_CHG;
+ if (!charger->present) {
+ charger->health = POWER_SUPPLY_HEALTH_UNKNOWN;
+ charger->status = POWER_SUPPLY_STATUS_DISCHARGING;
+ charger->charge_type = POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
+ return 0;
+ }
+
+ chg_dtls = FIELD_GET(MAX77658_BIT_STAT_B_CHG_DTLS, stat_chg_b);
+
+ charger->health = max77658_charger_status_map[chg_dtls].health;
+ charger->status = max77658_charger_status_map[chg_dtls].status;
+ charger->charge_type =
+ max77658_charger_status_map[chg_dtls].charge_type;
+
+ return 0;
+}
+
+static enum power_supply_property max77658_charger_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
+ POWER_SUPPLY_PROP_CURRENT_NOW,
+ POWER_SUPPLY_PROP_CURRENT_MAX
+};
+
+static enum power_supply_property max77659_charger_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+ POWER_SUPPLY_PROP_HEALTH,
+ POWER_SUPPLY_PROP_STATUS,
+ POWER_SUPPLY_PROP_CHARGE_TYPE,
+ POWER_SUPPLY_PROP_CURRENT_NOW
+};
+
+static int max77658_property_is_writeable(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static int max77659_property_is_writeable(struct power_supply *psy,
+ enum power_supply_property psp)
+{
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ return 1;
+ default:
+ return 0;
+ }
+}
+
+static int max77658_charger_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ struct max77658_charger *charger = power_supply_get_drvdata(psy);
+ int ret;
+
+ ret = max77658_charger_update(charger);
+ if (ret)
+ return ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = charger->present;
+ break;
+ case POWER_SUPPLY_PROP_HEALTH:
+ val->intval = charger->health;
+ break;
+ case POWER_SUPPLY_PROP_STATUS:
+ val->intval = charger->status;
+ break;
+ case POWER_SUPPLY_PROP_CHARGE_TYPE:
+ val->intval = charger->charge_type;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ ret = max77658_get_charge_current(charger, &val->intval);
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ if (charger->max77658->id != ID_MAX77659) {
+ ret = max77658_get_input_current_limit(charger,
+ &val->intval);
+ } else {
+ ret = -EINVAL;
+ }
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static int max77658_charger_set_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ const union power_supply_propval *val)
+{
+ struct max77658_charger *charger = power_supply_get_drvdata(psy);
+ int ret;
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ ret = regmap_update_bits(charger->regmap,
+ MAX77658_REG_CNFG_CHG_B,
+ MAX77658_BIT_CNFG_B_CHG_EN,
+ !!val->intval);
+ if (ret)
+ return ret;
+
+ ret =
+ max77658_set_charge_current(charger,
+ charger->fast_charge_current_ua);
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_NOW:
+ /* val->intval - uA */
+ ret = max77658_set_charge_current(charger, val->intval);
+ if (ret)
+ return ret;
+
+ charger->fast_charge_current_ua = val->intval;
+ break;
+ case POWER_SUPPLY_PROP_CURRENT_MAX:
+ if (charger->max77658->id == ID_MAX77659) {
+ ret = -EINVAL;
+ break;
+ }
+ ret = max77658_set_input_current_limit(charger, val->intval);
+ if (ret)
+ return ret;
+
+ charger->input_current_limit_ua = val->intval;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+
+ return ret;
+}
+
+static void max77658_charger_irq_handler(struct max77658_charger *charger,
+ int irq)
+{
+ int chg_present, vchgin, ichgin;
+ unsigned int val, stat_chg_b;
+ int ret;
+
+ switch (irq) {
+ case MAX77658_CHG_IRQ_THM_I:
+ ret = regmap_read(charger->regmap, MAX77658_REG_STAT_CHG_A,
+ &val);
+ if (ret) {
+ dev_err(charger->dev, "Failed to read STAT_CHG_A\n");
+ return;
+ }
+
+ val = FIELD_GET(MAX77658_BIT_STAT_A_THM_DTLS, val);
+ dev_dbg(charger->dev, "CHG_INT_THM: thm_dtls = %02Xh\n", val);
+ break;
+
+ case MAX77658_CHG_IRQ_CHG_I:
+ ret = regmap_read(charger->regmap, MAX77658_REG_STAT_CHG_B,
+ &val);
+ if (ret) {
+ dev_err(charger->dev, "Failed to read STAT_CHG_B\n");
+ return;
+ }
+
+ val = FIELD_GET(MAX77658_BIT_STAT_B_CHG_DTLS, val);
+ dev_dbg(charger->dev,
+ "CHG_INT_CHG: MAX77658_CHG_DTLS = %02Xh\n", val);
+ break;
+
+ case MAX77658_CHG_IRQ_CHGIN_I:
+ ret = regmap_read(charger->regmap,
+ MAX77658_REG_STAT_CHG_B, &val);
+ if (ret) {
+ dev_err(charger->dev, "Failed to read STAT_CHG_B\n");
+ return;
+ }
+
+ val = FIELD_GET(MAX77658_BIT_STAT_B_CHG_DTLS, val);
+ dev_dbg(charger->dev,
+ "CHG_INT_CHG: MAX77658_CHG_DTLS = %02Xh\n", val);
+
+ ret = regmap_read(charger->regmap, MAX77658_REG_STAT_CHG_B,
+ &stat_chg_b);
+ if (ret) {
+ dev_err(charger->dev, "Failed to read STAT_CHG_B\n");
+ return;
+ }
+
+ chg_present = stat_chg_b & MAX77658_BIT_STAT_B_CHG;
+
+ regmap_update_bits(charger->regmap, MAX77658_REG_CNFG_CHG_B,
+ MAX77658_BIT_CNFG_B_CHG_EN, !!chg_present);
+ if (chg_present)
+ break;
+
+ max77658_set_charge_current(charger,
+ charger->fast_charge_current_ua);
+ break;
+
+ case MAX77658_CHG_IRQ_TJ_REG_I:
+ ret = regmap_read(charger->regmap, MAX77658_REG_STAT_CHG_A,
+ &val);
+ if (ret) {
+ dev_err(charger->dev, "Failed to read STAT_CHG_A\n");
+ return;
+ }
+
+ val = FIELD_GET(MAX77658_BIT_STAT_A_TJ_REG_STAT, val);
+ dev_dbg(charger->dev,
+ "CHG_INT_TJ_REG: tj_reg_stat = %02Xh\n", val);
+ dev_dbg(charger->dev,
+ "CHG_INT_TJ_REG: Die temperature %s Tj-reg\n",
+ val ? "has exceeded" : "has not exceeded");
+ break;
+
+ case MAX77658_CHG_IRQ_SYS_CTRL_I:
+ ret = regmap_read(charger->regmap, MAX77658_REG_STAT_CHG_A,
+ &val);
+ if (ret) {
+ dev_err(charger->dev, "Failed to read STAT_CHG_A\n");
+ return;
+ }
+
+ val = FIELD_GET(MAX77658_BIT_STAT_A_VSYSY_MIN_STAT, val);
+ dev_dbg(charger->dev,
+ "CHG_INT_SYS_CTRL: The minimum system voltage regulation loop %s\n",
+ val ? "has engaged" : "has not engaged");
+ break;
+
+ case MAX77658_CHG_IRQ_CHGIN_CTRL_I:
+ ret = regmap_read(charger->regmap, MAX77658_REG_STAT_CHG_A,
+ &val);
+ if (ret) {
+ dev_dbg(charger->dev, "Failed to read STAT_CHG_A\n");
+ return;
+ }
+
+ vchgin = FIELD_GET(MAX77658_BIT_STAT_A_VCHGIN_MIN_STAT, val);
+ dev_dbg(charger->dev, "CHG_INT_CHGIN: VCHGIN_MIN_STAT %s\n",
+ vchgin ? "has changed" : "has not changed");
+
+ ichgin = FIELD_GET(MAX77658_BIT_STAT_A_ICHGIN_LIM_STAT, val);
+ dev_dbg(charger->dev, "CHG_INT_CHGIN: ICHGIN_LIM_STAT %s\n",
+ ichgin ? "has changed" : "has not changed");
+ break;
+
+ case MAX77658_CHG_IRQ_SYS_CNFG_I:
+ ret = regmap_read(charger->regmap, MAX77658_REG_CNFG_CHG_G,
+ &val);
+ if (ret) {
+ dev_dbg(charger->dev, "Failed to read CNFG_CHG_G\n");
+ return;
+ }
+
+ val = FIELD_GET(MAX77658_BIT_CNFG_G_CHG_CV, val);
+ dev_dbg(charger->dev, "CHG_INT_SYS_CNFG: CHG_VC = %02Xh\n",
+ val);
+ break;
+
+ default:
+ break;
+ }
+
+ power_supply_changed(charger->psy_chg);
+}
+
+static irqreturn_t max77658_charger_isr(int irq, void *data)
+{
+ struct max77658_charger *charger = data;
+
+ charger->irq = irq;
+ max77658_charger_update(charger);
+ max77658_charger_irq_handler(charger,
+ charger->irq - charger->irq_arr[0]);
+
+ return IRQ_HANDLED;
+}
+
+static const char * const max77658_irq_descs[] = {
+ "charger-thm",
+ "charger-chg",
+ "charger-chgin",
+ "charger-tj-reg",
+ "charger-sys-ctrl",
+ "charger-chgin-ctrl",
+ "charger-sys-cnfg",
+};
+
+static int max77658_charger_probe(struct platform_device *pdev)
+{
+ struct max77658_dev *max77658 = dev_get_drvdata(pdev->dev.parent);
+ struct power_supply_config charger_cfg = {};
+ struct power_supply_battery_info *info;
+ struct max77658_charger *charger;
+ struct device *dev = &pdev->dev;
+ int i, n_irq, ret;
+
+ charger = devm_kzalloc(dev, sizeof(*charger), GFP_KERNEL);
+ if (!charger)
+ return -ENOMEM;
+
+ platform_set_drvdata(pdev, charger);
+
+ charger->dev = dev;
+ charger->max77658 = max77658;
+ charger->regmap = dev_get_regmap(charger->dev->parent, NULL);
+
+ charger->psy_chg_d.get_property = max77658_charger_get_property;
+ charger->psy_chg_d.set_property = max77658_charger_set_property;
+ charger->psy_chg_d.type = POWER_SUPPLY_TYPE_USB;
+ charger_cfg.of_node = dev->of_node;
+ charger_cfg.drv_data = charger;
+
+ switch (max77658->id) {
+ case ID_MAX77654:
+ charger->psy_chg_d.properties = max77658_charger_props;
+ charger->psy_chg_d.num_properties =
+ ARRAY_SIZE(max77658_charger_props);
+ charger->psy_chg_d.name = "max77654-charger";
+ charger->psy_chg_d.property_is_writeable =
+ max77658_property_is_writeable;
+ n_irq = MAX77658_CHG_IRQ_MAX;
+ break;
+ case ID_MAX77658:
+ charger->psy_chg_d.properties = max77658_charger_props;
+ charger->psy_chg_d.num_properties =
+ ARRAY_SIZE(max77658_charger_props);
+ charger->psy_chg_d.name = "max77658-charger";
+ charger->psy_chg_d.property_is_writeable =
+ max77658_property_is_writeable;
+ n_irq = MAX77658_CHG_IRQ_MAX;
+ break;
+ case ID_MAX77659:
+ charger->psy_chg_d.properties = max77659_charger_props;
+ charger->psy_chg_d.num_properties =
+ ARRAY_SIZE(max77659_charger_props);
+ charger->psy_chg_d.name = "max77659-charger";
+ charger->psy_chg_d.property_is_writeable =
+ max77659_property_is_writeable;
+ n_irq = MAX77659_CHG_IRQ_MAX;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ charger->psy_chg = devm_power_supply_register(dev, &charger->psy_chg_d,
+ &charger_cfg);
+ if (IS_ERR(charger->psy_chg))
+ return dev_err_probe(dev, PTR_ERR(charger->psy_chg),
+ "Failed to register power supply\n");
+
+ charger->psy_chg->of_node = of_get_child_by_name(dev->parent->of_node,
+ "charger");
+
+ if (!charger->psy_chg->of_node)
+ dev_err(charger->dev,
+ "of_get_child_by_name\n");
+
+ ret = power_supply_get_battery_info(charger->psy_chg, &info);
+ if (ret) {
+ dev_err(charger->dev, "Unable to get charger info\n");
+ charger->fast_charge_current_ua = 15000;
+ } else {
+ charger->fast_charge_current_ua =
+ info->constant_charge_current_max_ua;
+ }
+
+ if (charger->max77658->id != ID_MAX77659)
+ max77658_charger_parse_dt(charger);
+
+ ret = max77658_charger_initialize(charger);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "Failed to initialize charger\n");
+
+ for (i = 0; i < n_irq; i++) {
+ charger->irq_arr[i] =
+ regmap_irq_get_virq(max77658->irqc_chg, i);
+
+ if (charger->irq_arr[i] < 0)
+ return dev_err_probe(dev, -EINVAL,
+ "Invalid IRQ for MAX77658_CHG_IRQ %d\n",
+ i);
+
+ ret = devm_request_threaded_irq(dev, charger->irq_arr[i],
+ NULL, max77658_charger_isr,
+ IRQF_TRIGGER_FALLING,
+ max77658_irq_descs[i], charger);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "Failed to request irq: %d\n",
+ charger->irq_arr[i]);
+ }
+
+ ret = device_create_file(dev, &dev_attr_fast_charge_timer);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "Failed to create fast charge timer sysfs entry\n");
+
+ ret = device_create_file(dev, &dev_attr_topoff_timer);
+ if (ret)
+ return dev_err_probe(dev, ret,
+ "Failed to create topoff timer sysfs entry\n");
+
+ return 0;
+}
+
+static int max77658_charger_remove(struct platform_device *pdev)
+{
+ device_remove_file(&pdev->dev, &dev_attr_topoff_timer);
+ device_remove_file(&pdev->dev, &dev_attr_fast_charge_timer);
+
+ return 0;
+}
+
+static const struct of_device_id max77658_charger_of_id[] = {
+ { .compatible = "adi,max77654-charger" },
+ { .compatible = "adi,max77658-charger" },
+ { .compatible = "adi,max77659-charger" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, max77658_charger_of_id);
+
+static const struct platform_device_id max77658_charger_id[] = {
+ { "max77654-charger" },
+ { "max77658-charger" },
+ { "max77659-charger" },
+ { /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, max77658_charger_id);
+
+static struct platform_driver max77658_charger_driver = {
+ .driver = {
+ .name = "max77658-charger",
+ .of_match_table = max77658_charger_of_id,
+ },
+ .probe = max77658_charger_probe,
+ .remove = max77658_charger_remove,
+ .id_table = max77658_charger_id,
+};
+
+module_platform_driver(max77658_charger_driver);
+
+MODULE_DESCRIPTION("MAX77658 Charger Driver");
+MODULE_AUTHOR("Nurettin.Bolucu@analog.com, Zeynep.Arslanbenzer@analog.com");
+MODULE_LICENSE("GPL");