charger: bq25180: implement online and status properties

Implement CHARGER_PROP_ONLINE and CHARGER_PROP_STATUS for the bq25180 driver. Signed-off-by: Fabio Baltieri <[email protected]>
zephyrproject-rtos · Jan 31, 2024 · 044529d · 044529d
1 parent 63cdde1
commit 044529d
Showing 1 changed file with 75 additions and 0 deletions.
diff --git a/drivers/charger/charger_bq25180.c b/drivers/charger/charger_bq25180.c
@@ -26,6 +26,12 @@ LOG_MODULE_REGISTER(bq25180, CONFIG_CHARGER_LOG_LEVEL);
 #define BQ25180_SHIP_RST 0x09
 #define BQ25180_MASK_ID 0x0c
 
+#define BQ25180_STAT0_CHG_STAT_MASK GENMASK(6, 5)
+#define BQ25180_STAT0_CHG_STAT_NOT_CHARGING 0x00
+#define BQ25180_STAT0_CHG_STAT_CONSTANT_CURRENT 0x01
+#define BQ25180_STAT0_CHG_STAT_CONSTANT_VOLTAGE 0x02
+#define BQ25180_STAT0_CHG_STAT_DONE 0x03
+#define BQ25180_STAT0_VIN_PGOOD_STAT BIT(0)
 #define BQ25180_ICHG_CHG_DIS BIT(7)
 #define BQ25180_ICHG_MSK GENMASK(6, 0)
 #define BQ25180_WATCHDOG_SEL_1_MSK GENMASK(1, 0)
@@ -134,10 +140,79 @@ static int bq25180_get_charge_current(const struct device *dev,
 	return 0;
 }
 
+static int bq25180_get_online(const struct device *dev,
+			      enum charger_online *online)
+{
+	const struct bq25180_config *cfg = dev->config;
+	uint8_t val;
+	int ret;
+
+	ret = i2c_reg_read_byte_dt(&cfg->i2c, BQ25180_STAT0, &val);
+	if (ret < 0) {
+		return ret;
+	}
+
+	if ((val & BQ25180_STAT0_VIN_PGOOD_STAT) != 0x00) {
+		*online = CHARGER_ONLINE_FIXED;
+	} else {
+		*online = CHARGER_ONLINE_OFFLINE;
+	}
+
+	return 0;
+}
+
+static int bq25180_get_status(const struct device *dev,
+			      enum charger_status *status)
+{
+	const struct bq25180_config *cfg = dev->config;
+	uint8_t stat0;
+	uint8_t ichg_ctrl;
+	int ret;
+
+	ret = i2c_reg_read_byte_dt(&cfg->i2c, BQ25180_STAT0, &stat0);
+	if (ret < 0) {
+		return ret;
+	}
+
+	if ((stat0 & BQ25180_STAT0_VIN_PGOOD_STAT) == 0x00) {
+		*status = CHARGER_STATUS_DISCHARGING;
+		return 0;
+	}
+
+	ret = i2c_reg_read_byte_dt(&cfg->i2c, BQ25180_ICHG_CTRL, &ichg_ctrl);
+	if (ret < 0) {
+		return ret;
+	}
+
+	if ((ichg_ctrl & BQ25180_ICHG_CHG_DIS) != 0x00) {
+		*status = CHARGER_STATUS_NOT_CHARGING;
+		return 0;
+	}
+
+	switch (FIELD_GET(BQ25180_STAT0_CHG_STAT_MASK, stat0)) {
+	case BQ25180_STAT0_CHG_STAT_NOT_CHARGING:
+		*status = CHARGER_STATUS_NOT_CHARGING;
+		break;
+	case BQ25180_STAT0_CHG_STAT_CONSTANT_CURRENT:
+	case BQ25180_STAT0_CHG_STAT_CONSTANT_VOLTAGE:
+		*status = CHARGER_STATUS_CHARGING;
+		break;
+	case BQ25180_STAT0_CHG_STAT_DONE:
+		*status = CHARGER_STATUS_FULL;
+		break;
+	}
+
+	return 0;
+}
+
 static int bq25180_get_prop(const struct device *dev, charger_prop_t prop,
 			    union charger_propval *val)
 {
 	switch (prop) {
+	case CHARGER_PROP_ONLINE:
+		return bq25180_get_online(dev, &val->online);
+	case CHARGER_PROP_STATUS:
+		return bq25180_get_status(dev, &val->status);
 	case CHARGER_PROP_CONSTANT_CHARGE_CURRENT_UA:
 		return bq25180_get_charge_current(dev, &val->const_charge_current_ua);
 	default: