1 files changed, 457 insertions, 61 deletions

diff --git a/drivers/power/supply/axp20x_usb_power.c b/drivers/power/supply/axp20x_usb_power.c
index e23308ad4cc7..9722912268fe 100644
--- a/drivers/power/supply/axp20x_usb_power.c
+++ b/drivers/power/supply/axp20x_usb_power.c
@@ -30,8 +30,13 @@
 #define AXP20X_PWR_STATUS_VBUS_PRESENT	BIT(5)
 #define AXP20X_PWR_STATUS_VBUS_USED	BIT(4)
 
+#define AXP717_PWR_STATUS_VBUS_GOOD	BIT(5)
+
 #define AXP20X_USB_STATUS_VBUS_VALID	BIT(2)
 
+#define AXP717_PMU_FAULT_VBUS		BIT(5)
+#define AXP717_PMU_FAULT_VSYS		BIT(3)
+
 #define AXP20X_VBUS_VHOLD_uV(b)		(4000000 + (((b) >> 3) & 7) * 100000)
 #define AXP20X_VBUS_VHOLD_MASK		GENMASK(5, 3)
 #define AXP20X_VBUS_VHOLD_OFFSET	3
@@ -39,37 +44,54 @@
 #define AXP20X_ADC_EN1_VBUS_CURR	BIT(2)
 #define AXP20X_ADC_EN1_VBUS_VOLT	BIT(3)
 
+#define AXP717_INPUT_VOL_LIMIT_MASK	GENMASK(3, 0)
+#define AXP717_INPUT_CUR_LIMIT_MASK	GENMASK(5, 0)
+#define AXP717_ADC_DATA_MASK		GENMASK(14, 0)
+
+#define AXP717_ADC_EN_VBUS_VOLT		BIT(2)
+
 /*
  * Note do not raise the debounce time, we must report Vusb high within
  * 100ms otherwise we get Vbus errors in musb.
  */
 #define DEBOUNCE_TIME			msecs_to_jiffies(50)
 
+struct axp20x_usb_power;
+
 struct axp_data {
 	const struct power_supply_desc	*power_desc;
 	const char * const		*irq_names;
 	unsigned int			num_irq_names;
 	const int			*curr_lim_table;
+	int				curr_lim_table_size;
 	struct reg_field		curr_lim_fld;
 	struct reg_field		vbus_valid_bit;
 	struct reg_field		vbus_mon_bit;
 	struct reg_field		usb_bc_en_bit;
+	struct reg_field		usb_bc_det_fld;
 	struct reg_field		vbus_disable_bit;
 	bool				vbus_needs_polling: 1;
+	void (*axp20x_read_vbus)(struct work_struct *work);
+	int (*axp20x_cfg_iio_chan)(struct platform_device *pdev,
+				   struct axp20x_usb_power *power);
+	int (*axp20x_cfg_adc_reg)(struct axp20x_usb_power *power);
 };
 
 struct axp20x_usb_power {
+	struct device *dev;
 	struct regmap *regmap;
 	struct regmap_field *curr_lim_fld;
 	struct regmap_field *vbus_valid_bit;
 	struct regmap_field *vbus_mon_bit;
 	struct regmap_field *usb_bc_en_bit;
+	struct regmap_field *usb_bc_det_fld;
 	struct regmap_field *vbus_disable_bit;
 	struct power_supply *supply;
 	const struct axp_data *axp_data;
 	struct iio_channel *vbus_v;
 	struct iio_channel *vbus_i;
 	struct delayed_work vbus_detect;
+	int max_input_cur;
 	unsigned int old_status;
 	unsigned int online;
 	unsigned int num_irqs;
@@ -115,6 +137,15 @@ static void axp20x_usb_power_poll_vbus(struct work_struct *work)
 	if (val != power->old_status)
 		power_supply_changed(power->supply);
 
+	if (power->usb_bc_en_bit && (val & AXP20X_PWR_STATUS_VBUS_PRESENT) !=
+		(power->old_status & AXP20X_PWR_STATUS_VBUS_PRESENT)) {
+		dev_dbg(power->dev, "Cable status changed, re-enabling USB BC");
+		ret = regmap_field_write(power->usb_bc_en_bit, 1);
+		if (ret)
+			dev_err(power->dev, "failed to enable USB BC: errno %d",
+				ret);
+	}
+
 	power->old_status = val;
 	power->online = val & AXP20X_PWR_STATUS_VBUS_USED;
 
@@ -123,6 +154,55 @@ out:
 		mod_delayed_work(system_power_efficient_wq, &power->vbus_detect, DEBOUNCE_TIME);
 }
 
+static void axp717_usb_power_poll_vbus(struct work_struct *work)
+{
+	struct axp20x_usb_power *power =
+		container_of(work, struct axp20x_usb_power, vbus_detect.work);
+	unsigned int val;
+	int ret;
+
+	ret = regmap_read(power->regmap, AXP717_ON_INDICATE, &val);
+	if (ret)
+		return;
+
+	val &= AXP717_PWR_STATUS_VBUS_GOOD;
+	if (val != power->old_status)
+		power_supply_changed(power->supply);
+
+	power->old_status = val;
+}
+
+static int axp20x_get_usb_type(struct axp20x_usb_power *power,
+			       union power_supply_propval *val)
+{
+	unsigned int reg;
+	int ret;
+
+	if (!power->usb_bc_det_fld)
+		return -EINVAL;
+
+	ret = regmap_field_read(power->usb_bc_det_fld, &reg);
+	if (ret)
+		return ret;
+
+	switch (reg) {
+	case 1:
+		val->intval = POWER_SUPPLY_USB_TYPE_SDP;
+		break;
+	case 2:
+		val->intval = POWER_SUPPLY_USB_TYPE_CDP;
+		break;
+	case 3:
+		val->intval = POWER_SUPPLY_USB_TYPE_DCP;
+		break;
+	default:
+		val->intval = POWER_SUPPLY_USB_TYPE_UNKNOWN;
+		break;
+	}
+
+	return 0;
+}
+
 static int axp20x_usb_power_get_property(struct power_supply *psy,
 	enum power_supply_property psp, union power_supply_propval *val)
 {
@@ -140,16 +220,15 @@ static int axp20x_usb_power_get_property(struct power_supply *psy,
 		return 0;
 	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
 		if (IS_ENABLED(CONFIG_AXP20X_ADC)) {
-			ret = iio_read_channel_processed(power->vbus_v,
-							 &val->intval);
-			if (ret)
-				return ret;
-
 			/*
 			 * IIO framework gives mV but Power Supply framework
 			 * gives uV.
 			 */
-			val->intval *= 1000;
+			ret = iio_read_channel_processed_scale(power->vbus_v,
+							       &val->intval, 1000);
+			if (ret)
+				return ret;
+
 			return 0;
 		}
 
@@ -160,25 +239,28 @@ static int axp20x_usb_power_get_property(struct power_supply *psy,
 
 		val->intval = ret * 1700; /* 1 step = 1.7 mV */
 		return 0;
-	case POWER_SUPPLY_PROP_CURRENT_MAX:
+	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
 		ret = regmap_field_read(power->curr_lim_fld, &v);
 		if (ret)
 			return ret;
 
-		val->intval = power->axp_data->curr_lim_table[v];
+		if (v < power->axp_data->curr_lim_table_size)
+			val->intval = power->axp_data->curr_lim_table[v];
+		else
+			val->intval = power->axp_data->curr_lim_table[
+				power->axp_data->curr_lim_table_size - 1];
 		return 0;
 	case POWER_SUPPLY_PROP_CURRENT_NOW:
 		if (IS_ENABLED(CONFIG_AXP20X_ADC)) {
-			ret = iio_read_channel_processed(power->vbus_i,
-							 &val->intval);
-			if (ret)
-				return ret;
-
 			/*
 			 * IIO framework gives mA but Power Supply framework
 			 * gives uA.
 			 */
-			val->intval *= 1000;
+			ret = iio_read_channel_processed_scale(power->vbus_i,
+							       &val->intval, 1000);
+			if (ret)
+				return ret;
+
 			return 0;
 		}
 
@@ -189,6 +271,9 @@ static int axp20x_usb_power_get_property(struct power_supply *psy,
 
 		val->intval = ret * 375; /* 1 step = 0.375 mA */
 		return 0;
+
+	case POWER_SUPPLY_PROP_USB_TYPE:
+		return axp20x_get_usb_type(power, val);
 	default:
 		break;
 	}
@@ -230,6 +315,90 @@ static int axp20x_usb_power_get_property(struct power_supply *psy,
 	return 0;
 }
 
+static int axp717_usb_power_get_property(struct power_supply *psy,
+	enum power_supply_property psp, union power_supply_propval *val)
+{
+	struct axp20x_usb_power *power = power_supply_get_drvdata(psy);
+	unsigned int v;
+	int ret;
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_HEALTH:
+		val->intval = POWER_SUPPLY_HEALTH_GOOD;
+		ret = regmap_read(power->regmap, AXP717_ON_INDICATE, &v);
+		if (ret)
+			return ret;
+
+		if (!(v & AXP717_PWR_STATUS_VBUS_GOOD))
+			val->intval = POWER_SUPPLY_HEALTH_UNKNOWN;
+
+		ret = regmap_read(power->regmap, AXP717_PMU_FAULT_VBUS, &v);
+		if (ret)
+			return ret;
+
+		v &= (AXP717_PMU_FAULT_VBUS | AXP717_PMU_FAULT_VSYS);
+		if (v) {
+			val->intval = POWER_SUPPLY_HEALTH_OVERVOLTAGE;
+			regmap_write(power->regmap, AXP717_PMU_FAULT_VBUS, v);
+		}
+
+		break;
+	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+		ret = regmap_read(power->regmap, AXP717_INPUT_CUR_LIMIT_CTRL, &v);
+		if (ret)
+			return ret;
+
+		/* 50ma step size with 100ma offset. */
+		v &= AXP717_INPUT_CUR_LIMIT_MASK;
+		val->intval = (v * 50000) + 100000;
+		break;
+	case POWER_SUPPLY_PROP_ONLINE:
+	case POWER_SUPPLY_PROP_PRESENT:
+		ret = regmap_read(power->regmap, AXP717_ON_INDICATE, &v);
+		if (ret)
+			return ret;
+		val->intval = !!(v & AXP717_PWR_STATUS_VBUS_GOOD);
+		break;
+	case POWER_SUPPLY_PROP_USB_TYPE:
+		return axp20x_get_usb_type(power, val);
+	case POWER_SUPPLY_PROP_VOLTAGE_MIN:
+		ret = regmap_read(power->regmap, AXP717_INPUT_VOL_LIMIT_CTRL, &v);
+		if (ret)
+			return ret;
+
+		/* 80mv step size with 3.88v offset. */
+		v &= AXP717_INPUT_VOL_LIMIT_MASK;
+		val->intval = (v * 80000) + 3880000;
+		break;
+	case POWER_SUPPLY_PROP_VOLTAGE_NOW:
+		if (IS_ENABLED(CONFIG_AXP20X_ADC)) {
+			/*
+			 * IIO framework gives mV but Power Supply framework
+			 * gives uV.
+			 */
+			ret = iio_read_channel_processed_scale(power->vbus_v,
+							       &val->intval, 1000);
+			if (ret)
+				return ret;
+
+			return 0;
+		}
+
+		ret = axp20x_read_variable_width(power->regmap,
+						 AXP717_VBUS_V_H, 16);
+		if (ret < 0)
+			return ret;
+
+		val->intval = (ret % AXP717_ADC_DATA_MASK) * 1000;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+
+}
+
 static int axp20x_usb_power_set_voltage_min(struct axp20x_usb_power *power,
 					    int intval)
 {
@@ -256,19 +425,83 @@ static int axp20x_usb_power_set_voltage_min(struct axp20x_usb_power *power,
 	return -EINVAL;
 }
 
-static int axp20x_usb_power_set_current_max(struct axp20x_usb_power *power, int intval)
+static int axp717_usb_power_set_voltage_min(struct axp20x_usb_power *power,
+					    int intval)
+{
+	int val;
+
+	/* Minimum value of 3.88v and maximum of 5.08v. */
+	if (intval < 3880000 || intval > 5080000)
+		return -EINVAL;
+
+	/* step size of 80ma with 3.88v offset. */
+	val = (intval - 3880000) / 80000;
+	return regmap_update_bits(power->regmap,
+				  AXP717_INPUT_VOL_LIMIT_CTRL,
+				  AXP717_INPUT_VOL_LIMIT_MASK, val);
+}
+
+static int axp20x_usb_power_set_input_current_limit(struct axp20x_usb_power *power,
+						    int intval)
 {
-	const unsigned int max = GENMASK(power->axp_data->curr_lim_fld.msb,
-					 power->axp_data->curr_lim_fld.lsb);
+	int ret;
+	unsigned int reg;
+	const unsigned int max = power->axp_data->curr_lim_table_size;
 
 	if (intval == -1)
 		return -EINVAL;
 
-	for (unsigned int i = 0; i <= max; ++i)
-		if (power->axp_data->curr_lim_table[i] == intval)
-			return regmap_field_write(power->curr_lim_fld, i);
+	if (power->max_input_cur && (intval > power->max_input_cur)) {
+		dev_warn(power->dev,
+			 "requested current %d clamped to max current %d\n",
+			 intval, power->max_input_cur);
+		intval = power->max_input_cur;
+	}
 
-	return -EINVAL;
+	/*
+	 * BC1.2 detection can cause a race condition if we try to set a current
+	 * limit while it's in progress. When it finishes it will overwrite the
+	 * current limit we just set.
+	 */
+	if (power->usb_bc_en_bit) {
+		dev_dbg(power->dev,
+			"disabling BC1.2 detection because current limit was set");
+		ret = regmap_field_write(power->usb_bc_en_bit, 0);
+		if (ret)
+			return ret;
+	}
+
+	for (reg = max - 1; reg > 0; reg--)
+		if (power->axp_data->curr_lim_table[reg] <= intval)
+			break;
+
+	dev_dbg(power->dev, "setting input current limit reg to %d (%d uA), requested %d uA",
+		reg, power->axp_data->curr_lim_table[reg], intval);
+
+	return regmap_field_write(power->curr_lim_fld, reg);
+}
+
+static int axp717_usb_power_set_input_current_limit(struct axp20x_usb_power *power,
+						    int intval)
+{
+	int tmp;
+
+	/* Minimum value of 100mA and maximum value of 3.25A*/
+	if (intval < 100000 || intval > 3250000)
+		return -EINVAL;
+
+	if (power->max_input_cur && (intval > power->max_input_cur)) {
+		dev_warn(power->dev,
+			 "reqested current %d clamped to max current %d\n",
+			 intval, power->max_input_cur);
+		intval = power->max_input_cur;
+	}
+
+	/* Minimum value of 100mA with step size of 50mA. */
+	tmp = (intval - 100000) / 50000;
+	return regmap_update_bits(power->regmap,
+				  AXP717_INPUT_CUR_LIMIT_CTRL,
+				  AXP717_INPUT_CUR_LIMIT_MASK, tmp);
 }
 
 static int axp20x_usb_power_set_property(struct power_supply *psy,
@@ -287,8 +520,26 @@ static int axp20x_usb_power_set_property(struct power_supply *psy,
 	case POWER_SUPPLY_PROP_VOLTAGE_MIN:
 		return axp20x_usb_power_set_voltage_min(power, val->intval);
 
-	case POWER_SUPPLY_PROP_CURRENT_MAX:
-		return axp20x_usb_power_set_current_max(power, val->intval);
+	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+		return axp20x_usb_power_set_input_current_limit(power, val->intval);
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int axp717_usb_power_set_property(struct power_supply *psy,
+					 enum power_supply_property psp,
+					 const union power_supply_propval *val)
+{
+	struct axp20x_usb_power *power = power_supply_get_drvdata(psy);
+
+	switch (psp) {
+	case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
+		return axp717_usb_power_set_input_current_limit(power, val->intval);
+
+	case POWER_SUPPLY_PROP_VOLTAGE_MIN:
+		return axp717_usb_power_set_voltage_min(power, val->intval);
 
 	default:
 		return -EINVAL;
@@ -313,7 +564,65 @@ static int axp20x_usb_power_prop_writeable(struct power_supply *psy,
 		return power->vbus_disable_bit != NULL;
 
 	return psp == POWER_SUPPLY_PROP_VOLTAGE_MIN ||
-	       psp == POWER_SUPPLY_PROP_CURRENT_MAX;
+	       psp == POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT;
+}
+
+static int axp717_usb_power_prop_writeable(struct power_supply *psy,
+					   enum power_supply_property psp)
+{
+	return psp == POWER_SUPPLY_PROP_VOLTAGE_MIN ||
+	       psp == POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT;
+}
+
+static int axp20x_configure_iio_channels(struct platform_device *pdev,
+					 struct axp20x_usb_power *power)
+{
+	power->vbus_v = devm_iio_channel_get(&pdev->dev, "vbus_v");
+	if (IS_ERR(power->vbus_v)) {
+		if (PTR_ERR(power->vbus_v) == -ENODEV)
+			return -EPROBE_DEFER;
+		return PTR_ERR(power->vbus_v);
+	}
+
+	power->vbus_i = devm_iio_channel_get(&pdev->dev, "vbus_i");
+	if (IS_ERR(power->vbus_i)) {
+		if (PTR_ERR(power->vbus_i) == -ENODEV)
+			return -EPROBE_DEFER;
+		return PTR_ERR(power->vbus_i);
+	}
+
+	return 0;
+}
+
+static int axp717_configure_iio_channels(struct platform_device *pdev,
+					 struct axp20x_usb_power *power)
+{
+	power->vbus_v = devm_iio_channel_get(&pdev->dev, "vbus_v");
+	if (IS_ERR(power->vbus_v)) {
+		if (PTR_ERR(power->vbus_v) == -ENODEV)
+			return -EPROBE_DEFER;
+		return PTR_ERR(power->vbus_v);
+	}
+
+	return 0;
+}
+
+static int axp20x_configure_adc_registers(struct axp20x_usb_power *power)
+{
+	/* Enable vbus voltage and current measurement */
+	return regmap_update_bits(power->regmap, AXP20X_ADC_EN1,
+				  AXP20X_ADC_EN1_VBUS_CURR |
+				  AXP20X_ADC_EN1_VBUS_VOLT,
+				  AXP20X_ADC_EN1_VBUS_CURR |
+				  AXP20X_ADC_EN1_VBUS_VOLT);
+}
+
+static int axp717_configure_adc_registers(struct axp20x_usb_power *power)
+{
+	/* Enable vbus voltage measurement  */
+	return regmap_update_bits(power->regmap, AXP717_ADC_CH_EN_CONTROL,
+				  AXP717_ADC_EN_VBUS_VOLT,
+				  AXP717_ADC_EN_VBUS_VOLT);
 }
 
 static enum power_supply_property axp20x_usb_power_properties[] = {
@@ -322,7 +631,7 @@ static enum power_supply_property axp20x_usb_power_properties[] = {
 	POWER_SUPPLY_PROP_ONLINE,
 	POWER_SUPPLY_PROP_VOLTAGE_MIN,
 	POWER_SUPPLY_PROP_VOLTAGE_NOW,
-	POWER_SUPPLY_PROP_CURRENT_MAX,
+	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
 	POWER_SUPPLY_PROP_CURRENT_NOW,
 };
 
@@ -331,7 +640,26 @@ static enum power_supply_property axp22x_usb_power_properties[] = {
 	POWER_SUPPLY_PROP_PRESENT,
 	POWER_SUPPLY_PROP_ONLINE,
 	POWER_SUPPLY_PROP_VOLTAGE_MIN,
-	POWER_SUPPLY_PROP_CURRENT_MAX,
+	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
+};
+
+static enum power_supply_property axp717_usb_power_properties[] = {
+	POWER_SUPPLY_PROP_HEALTH,
+	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
+	POWER_SUPPLY_PROP_ONLINE,
+	POWER_SUPPLY_PROP_PRESENT,
+	POWER_SUPPLY_PROP_USB_TYPE,
+	POWER_SUPPLY_PROP_VOLTAGE_MIN,
+	POWER_SUPPLY_PROP_VOLTAGE_NOW,
+};
+
+static enum power_supply_property axp813_usb_power_properties[] = {
+	POWER_SUPPLY_PROP_HEALTH,
+	POWER_SUPPLY_PROP_PRESENT,
+	POWER_SUPPLY_PROP_ONLINE,
+	POWER_SUPPLY_PROP_VOLTAGE_MIN,
+	POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT,
+	POWER_SUPPLY_PROP_USB_TYPE,
 };
 
 static const struct power_supply_desc axp20x_usb_power_desc = {
@@ -354,6 +682,34 @@ static const struct power_supply_desc axp22x_usb_power_desc = {
 	.set_property = axp20x_usb_power_set_property,
 };
 
+static const struct power_supply_desc axp717_usb_power_desc = {
+	.name = "axp20x-usb",
+	.type = POWER_SUPPLY_TYPE_USB,
+	.properties = axp717_usb_power_properties,
+	.num_properties = ARRAY_SIZE(axp717_usb_power_properties),
+	.property_is_writeable = axp717_usb_power_prop_writeable,
+	.get_property = axp717_usb_power_get_property,
+	.set_property = axp717_usb_power_set_property,
+	.usb_types = BIT(POWER_SUPPLY_USB_TYPE_SDP) |
+		     BIT(POWER_SUPPLY_USB_TYPE_CDP) |
+		     BIT(POWER_SUPPLY_USB_TYPE_DCP) |
+		     BIT(POWER_SUPPLY_USB_TYPE_UNKNOWN),
+};
+
+static const struct power_supply_desc axp813_usb_power_desc = {
+	.name = "axp20x-usb",
+	.type = POWER_SUPPLY_TYPE_USB,
+	.properties = axp813_usb_power_properties,
+	.num_properties = ARRAY_SIZE(axp813_usb_power_properties),
+	.property_is_writeable = axp20x_usb_power_prop_writeable,
+	.get_property = axp20x_usb_power_get_property,
+	.set_property = axp20x_usb_power_set_property,
+	.usb_types = BIT(POWER_SUPPLY_USB_TYPE_SDP) |
+		     BIT(POWER_SUPPLY_USB_TYPE_CDP) |
+		     BIT(POWER_SUPPLY_USB_TYPE_DCP) |
+		     BIT(POWER_SUPPLY_USB_TYPE_UNKNOWN),
+};
+
 static const char * const axp20x_irq_names[] = {
 	"VBUS_PLUGIN",
 	"VBUS_REMOVAL",
@@ -366,6 +722,12 @@ static const char * const axp22x_irq_names[] = {
 	"VBUS_REMOVAL",
 };
 
+static const char * const axp717_irq_names[] = {
+	"VBUS_PLUGIN",
+	"VBUS_REMOVAL",
+	"VBUS_OVER_V",
+};
+
 static int axp192_usb_curr_lim_table[] = {
 	-1,
 	-1,
@@ -388,10 +750,15 @@ static int axp221_usb_curr_lim_table[] = {
 };
 
 static int axp813_usb_curr_lim_table[] = {
+	100000,
+	500000,
 	900000,
 	1500000,
 	2000000,
 	2500000,
+	3000000,
+	3500000,
+	4000000,
 };
 
 static const struct axp_data axp192_data = {
@@ -399,9 +766,13 @@ static const struct axp_data axp192_data = {
 	.irq_names	= axp20x_irq_names,
 	.num_irq_names	= ARRAY_SIZE(axp20x_irq_names),
 	.curr_lim_table = axp192_usb_curr_lim_table,
+	.curr_lim_table_size = ARRAY_SIZE(axp192_usb_curr_lim_table),
 	.curr_lim_fld   = REG_FIELD(AXP20X_VBUS_IPSOUT_MGMT, 0, 1),
 	.vbus_valid_bit = REG_FIELD(AXP192_USB_OTG_STATUS, 2, 2),
 	.vbus_mon_bit   = REG_FIELD(AXP20X_VBUS_MON, 3, 3),
+	.axp20x_read_vbus = &axp20x_usb_power_poll_vbus,
+	.axp20x_cfg_iio_chan = axp20x_configure_iio_channels,
+	.axp20x_cfg_adc_reg = axp20x_configure_adc_registers,
 };
 
 static const struct axp_data axp202_data = {
@@ -409,9 +780,13 @@ static const struct axp_data axp202_data = {
 	.irq_names	= axp20x_irq_names,
 	.num_irq_names	= ARRAY_SIZE(axp20x_irq_names),
 	.curr_lim_table = axp20x_usb_curr_lim_table,
+	.curr_lim_table_size = ARRAY_SIZE(axp20x_usb_curr_lim_table),
 	.curr_lim_fld   = REG_FIELD(AXP20X_VBUS_IPSOUT_MGMT, 0, 1),
 	.vbus_valid_bit = REG_FIELD(AXP20X_USB_OTG_STATUS, 2, 2),
 	.vbus_mon_bit   = REG_FIELD(AXP20X_VBUS_MON, 3, 3),
+	.axp20x_read_vbus = &axp20x_usb_power_poll_vbus,
+	.axp20x_cfg_iio_chan = axp20x_configure_iio_channels,
+	.axp20x_cfg_adc_reg = axp20x_configure_adc_registers,
 };
 
 static const struct axp_data axp221_data = {
@@ -419,8 +794,12 @@ static const struct axp_data axp221_data = {
 	.irq_names	= axp22x_irq_names,
 	.num_irq_names	= ARRAY_SIZE(axp22x_irq_names),
 	.curr_lim_table = axp221_usb_curr_lim_table,
+	.curr_lim_table_size = ARRAY_SIZE(axp221_usb_curr_lim_table),
 	.curr_lim_fld   = REG_FIELD(AXP20X_VBUS_IPSOUT_MGMT, 0, 1),
 	.vbus_needs_polling = true,
+	.axp20x_read_vbus = &axp20x_usb_power_poll_vbus,
+	.axp20x_cfg_iio_chan = axp20x_configure_iio_channels,
+	.axp20x_cfg_adc_reg = axp20x_configure_adc_registers,
 };
 
 static const struct axp_data axp223_data = {
@@ -428,19 +807,42 @@ static const struct axp_data axp223_data = {
 	.irq_names	= axp22x_irq_names,
 	.num_irq_names	= ARRAY_SIZE(axp22x_irq_names),
 	.curr_lim_table = axp20x_usb_curr_lim_table,
+	.curr_lim_table_size = ARRAY_SIZE(axp20x_usb_curr_lim_table),
 	.curr_lim_fld   = REG_FIELD(AXP20X_VBUS_IPSOUT_MGMT, 0, 1),
 	.vbus_needs_polling = true,
+	.axp20x_read_vbus = &axp20x_usb_power_poll_vbus,
+	.axp20x_cfg_iio_chan = axp20x_configure_iio_channels,
+	.axp20x_cfg_adc_reg = axp20x_configure_adc_registers,
+};
+
+static const struct axp_data axp717_data = {
+	.power_desc     = &axp717_usb_power_desc,
+	.irq_names      = axp717_irq_names,
+	.num_irq_names  = ARRAY_SIZE(axp717_irq_names),
+	.curr_lim_fld   = REG_FIELD(AXP717_INPUT_CUR_LIMIT_CTRL, 0, 5),
+	.usb_bc_en_bit  = REG_FIELD(AXP717_MODULE_EN_CONTROL_1, 4, 4),
+	.usb_bc_det_fld = REG_FIELD(AXP717_BC_DETECT, 5, 7),
+	.vbus_mon_bit   = REG_FIELD(AXP717_ADC_CH_EN_CONTROL, 2, 2),
+	.vbus_needs_polling = false,
+	.axp20x_read_vbus = &axp717_usb_power_poll_vbus,
+	.axp20x_cfg_iio_chan = axp717_configure_iio_channels,
+	.axp20x_cfg_adc_reg = axp717_configure_adc_registers,
 };
 
 static const struct axp_data axp813_data = {
-	.power_desc	= &axp22x_usb_power_desc,
+	.power_desc	= &axp813_usb_power_desc,
 	.irq_names	= axp22x_irq_names,
 	.num_irq_names	= ARRAY_SIZE(axp22x_irq_names),
 	.curr_lim_table = axp813_usb_curr_lim_table,
-	.curr_lim_fld   = REG_FIELD(AXP20X_VBUS_IPSOUT_MGMT, 0, 1),
+	.curr_lim_table_size = ARRAY_SIZE(axp813_usb_curr_lim_table),
+	.curr_lim_fld	= REG_FIELD(AXP22X_CHRG_CTRL3, 4, 7),
 	.usb_bc_en_bit	= REG_FIELD(AXP288_BC_GLOBAL, 0, 0),
+	.usb_bc_det_fld = REG_FIELD(AXP288_BC_DET_STAT, 5, 7),
 	.vbus_disable_bit = REG_FIELD(AXP20X_VBUS_IPSOUT_MGMT, 7, 7),
 	.vbus_needs_polling = true,
+	.axp20x_read_vbus = &axp20x_usb_power_poll_vbus,
+	.axp20x_cfg_iio_chan = axp20x_configure_iio_channels,
+	.axp20x_cfg_adc_reg = axp20x_configure_adc_registers,
 };
 
 #ifdef CONFIG_PM_SLEEP
@@ -482,36 +884,6 @@ static int axp20x_usb_power_resume(struct device *dev)
 static SIMPLE_DEV_PM_OPS(axp20x_usb_power_pm_ops, axp20x_usb_power_suspend,
 						  axp20x_usb_power_resume);
 
-static int configure_iio_channels(struct platform_device *pdev,
-				  struct axp20x_usb_power *power)
-{
-	power->vbus_v = devm_iio_channel_get(&pdev->dev, "vbus_v");
-	if (IS_ERR(power->vbus_v)) {
-		if (PTR_ERR(power->vbus_v) == -ENODEV)
-			return -EPROBE_DEFER;
-		return PTR_ERR(power->vbus_v);
-	}
-
-	power->vbus_i = devm_iio_channel_get(&pdev->dev, "vbus_i");
-	if (IS_ERR(power->vbus_i)) {
-		if (PTR_ERR(power->vbus_i) == -ENODEV)
-			return -EPROBE_DEFER;
-		return PTR_ERR(power->vbus_i);
-	}
-
-	return 0;
-}
-
-static int configure_adc_registers(struct axp20x_usb_power *power)
-{
-	/* Enable vbus voltage and current measurement */
-	return regmap_update_bits(power->regmap, AXP20X_ADC_EN1,
-				  AXP20X_ADC_EN1_VBUS_CURR |
-				  AXP20X_ADC_EN1_VBUS_VOLT,
-				  AXP20X_ADC_EN1_VBUS_CURR |
-				  AXP20X_ADC_EN1_VBUS_VOLT);
-}
-
 static int axp20x_regmap_field_alloc_optional(struct device *dev,
 					      struct regmap *regmap,
 					      struct reg_field fdesc,
@@ -532,6 +904,18 @@ static int axp20x_regmap_field_alloc_optional(struct device *dev,
 	return 0;
 }
 
+/* Optionally allow users to specify a maximum charging current. */
+static void axp20x_usb_power_parse_dt(struct device *dev,
+				      struct axp20x_usb_power *power)
+{
+	int ret;
+
+	ret = device_property_read_u32(dev, "input-current-limit-microamp",
+				       &power->max_input_cur);
+	if (ret)
+		dev_dbg(dev, "%s() no input-current-limit specified\n", __func__);
+}
+
 static int axp20x_usb_power_probe(struct platform_device *pdev)
 {
 	struct axp20x_dev *axp20x = dev_get_drvdata(pdev->dev.parent);
@@ -558,6 +942,7 @@ static int axp20x_usb_power_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, power);
 
+	power->dev = &pdev->dev;
 	power->axp_data = axp_data;
 	power->regmap = axp20x->regmap;
 	power->num_irqs = axp_data->num_irq_names;
@@ -567,6 +952,8 @@ static int axp20x_usb_power_probe(struct platform_device *pdev)
 	if (IS_ERR(power->curr_lim_fld))
 		return PTR_ERR(power->curr_lim_fld);
 
+	axp20x_usb_power_parse_dt(&pdev->dev, power);
+
 	ret = axp20x_regmap_field_alloc_optional(&pdev->dev, power->regmap,
 						 axp_data->vbus_valid_bit,
 						 &power->vbus_valid_bit);
@@ -586,13 +973,19 @@ static int axp20x_usb_power_probe(struct platform_device *pdev)
 		return ret;
 
 	ret = axp20x_regmap_field_alloc_optional(&pdev->dev, power->regmap,
+						 axp_data->usb_bc_det_fld,
+						 &power->usb_bc_det_fld);
+	if (ret)
+		return ret;
+
+	ret = axp20x_regmap_field_alloc_optional(&pdev->dev, power->regmap,
 						 axp_data->vbus_disable_bit,
 						 &power->vbus_disable_bit);
 	if (ret)
 		return ret;
 
 	ret = devm_delayed_work_autocancel(&pdev->dev, &power->vbus_detect,
-					   axp20x_usb_power_poll_vbus);
+					   axp_data->axp20x_read_vbus);
 	if (ret)
 		return ret;
 
@@ -603,9 +996,9 @@ static int axp20x_usb_power_probe(struct platform_device *pdev)
 			return ret;
 
 		if (IS_ENABLED(CONFIG_AXP20X_ADC))
-			ret = configure_iio_channels(pdev, power);
+			ret = axp_data->axp20x_cfg_iio_chan(pdev, power);
 		else
-			ret = configure_adc_registers(power);
+			ret = axp_data->axp20x_cfg_adc_reg(power);
 
 		if (ret)
 			return ret;
@@ -664,6 +1057,9 @@ static const struct of_device_id axp20x_usb_power_match[] = {
 		.compatible = "x-powers,axp223-usb-power-supply",
 		.data = &axp223_data,
 	}, {
+		.compatible = "x-powers,axp717-usb-power-supply",
+		.data = &axp717_data,
+	}, {
 		.compatible = "x-powers,axp813-usb-power-supply",
 		.data = &axp813_data,
 	}, { /* sentinel */ }