Merge commit 'battery/master'

7 files changed, 266 insertions, 31 deletions

diff --git a/Documentation/power/power_supply_class.txt b/Documentation/power/power_supply_class.txt
index c6cd4956047c..9f16c5178b66 100644
--- a/Documentation/power/power_supply_class.txt
+++ b/Documentation/power/power_supply_class.txt
@@ -76,6 +76,11 @@ STATUS - this attribute represents operating status (charging, full,
 discharging (i.e. powering a load), etc.). This corresponds to
 BATTERY_STATUS_* values, as defined in battery.h.
 
+CHARGE_TYPE - batteries can typically charge at different rates.
+This defines trickle and fast charges.  For batteries that
+are already charged or discharging, 'n/a' can be displayed (or
+'unknown', if the status is not known).
+
 HEALTH - represents health of the battery, values corresponds to
 POWER_SUPPLY_HEALTH_*, defined in battery.h.
 
@@ -108,6 +113,8 @@ relative, time-based measurements.
 ENERGY_FULL, ENERGY_EMPTY - same as above but for energy.
 
 CAPACITY - capacity in percents.
+CAPACITY_LEVEL - capacity level. This corresponds to
+POWER_SUPPLY_CAPACITY_LEVEL_*.
 
 TEMP - temperature of the power supply.
 TEMP_AMBIENT - ambient temperature.
diff --git a/drivers/power/ds2760_battery.c b/drivers/power/ds2760_battery.c
index 520b5c49ff30..1bb8498f14be 100644
--- a/drivers/power/ds2760_battery.c
+++ b/drivers/power/ds2760_battery.c
@@ -56,6 +56,7 @@ struct ds2760_device_info {
 	struct device *w1_dev;
 	struct workqueue_struct *monitor_wqueue;
 	struct delayed_work monitor_work;
+	struct delayed_work set_charged_work;
 };
 
 static unsigned int cache_time = 1000;
@@ -66,6 +67,14 @@ static unsigned int pmod_enabled;
 module_param(pmod_enabled, bool, 0644);
 MODULE_PARM_DESC(pmod_enabled, "PMOD enable bit");
 
+static unsigned int rated_capacity;
+module_param(rated_capacity, uint, 0644);
+MODULE_PARM_DESC(rated_capacity, "rated battery capacity, 10*mAh or index");
+
+static unsigned int current_accum;
+module_param(current_accum, uint, 0644);
+MODULE_PARM_DESC(current_accum, "current accumulator value");
+
 /* Some batteries have their rated capacity stored a N * 10 mAh, while
  * others use an index into this table. */
 static int rated_capacities[] = {
@@ -168,8 +177,13 @@ static int ds2760_battery_read_status(struct ds2760_device_info *di)
 	di->full_active_uAh = di->raw[DS2760_ACTIVE_FULL] << 8 |
 			      di->raw[DS2760_ACTIVE_FULL + 1];
 
-	scale[0] = di->raw[DS2760_ACTIVE_FULL] << 8 |
-		   di->raw[DS2760_ACTIVE_FULL + 1];
+	/* If the full_active_uAh value is not given, fall back to the rated
+	 * capacity. This is likely to happen when chips are not part of the
+	 * battery pack and is therefore not bootstrapped. */
+	if (di->full_active_uAh == 0)
+		di->full_active_uAh = di->rated_capacity / 1000L;
+
+	scale[0] = di->full_active_uAh;
 	for (i = 1; i < 5; i++)
 		scale[i] = scale[i - 1] + di->raw[DS2760_ACTIVE_FULL + 2 + i];
 
@@ -206,6 +220,22 @@ static int ds2760_battery_read_status(struct ds2760_device_info *di)
 	return 0;
 }
 
+static void ds2760_battery_set_current_accum(struct ds2760_device_info *di,
+					     unsigned int acr_val)
+{
+	unsigned char acr[2];
+
+	/* acr is in units of 0.25 mAh */
+	acr_val *= 4L;
+	acr_val /= 1000;
+
+	acr[0] = acr_val >> 8;
+	acr[1] = acr_val & 0xff;
+
+	if (w1_ds2760_write(di->w1_dev, acr, DS2760_CURRENT_ACCUM_MSB, 2) < 2)
+		dev_warn(di->dev, "ACR write failed\n");
+}
+
 static void ds2760_battery_update_status(struct ds2760_device_info *di)
 {
 	int old_charge_status = di->charge_status;
@@ -237,21 +267,9 @@ static void ds2760_battery_update_status(struct ds2760_device_info *di)
 			if (di->full_counter < 2) {
 				di->charge_status = POWER_SUPPLY_STATUS_CHARGING;
 			} else {
-				unsigned char acr[2];
-				int acr_val;
-
-				/* acr is in units of 0.25 mAh */
-				acr_val = di->full_active_uAh * 4L / 1000;
-
-				acr[0] = acr_val >> 8;
-				acr[1] = acr_val & 0xff;
-
-				if (w1_ds2760_write(di->w1_dev, acr,
-				    DS2760_CURRENT_ACCUM_MSB, 2) < 2)
-					dev_warn(di->dev,
-						 "ACR reset failed\n");
-
 				di->charge_status = POWER_SUPPLY_STATUS_FULL;
+				ds2760_battery_set_current_accum(di,
+						di->full_active_uAh);
 			}
 		}
 	} else {
@@ -274,6 +292,17 @@ static void ds2760_battery_write_status(struct ds2760_device_info *di,
 	w1_ds2760_recall_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
 }
 
+static void ds2760_battery_write_rated_capacity(struct ds2760_device_info *di,
+						unsigned char rated_capacity)
+{
+	if (rated_capacity == di->raw[DS2760_RATED_CAPACITY])
+		return;
+
+	w1_ds2760_write(di->w1_dev, &rated_capacity, DS2760_RATED_CAPACITY, 1);
+	w1_ds2760_store_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+	w1_ds2760_recall_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+}
+
 static void ds2760_battery_work(struct work_struct *work)
 {
 	struct ds2760_device_info *di = container_of(work,
@@ -299,6 +328,52 @@ static void ds2760_battery_external_power_changed(struct power_supply *psy)
 	queue_delayed_work(di->monitor_wqueue, &di->monitor_work, HZ/10);
 }
 
+
+static void ds2760_battery_set_charged_work(struct work_struct *work)
+{
+	char bias;
+	struct ds2760_device_info *di = container_of(work,
+		struct ds2760_device_info, set_charged_work.work);
+
+	dev_dbg(di->dev, "%s\n", __func__);
+
+	ds2760_battery_read_status(di);
+
+	/* When we get notified by external circuitry that the battery is
+	 * considered fully charged now, we know that there is no current
+	 * flow any more. However, the ds2760's internal current meter is
+	 * too inaccurate to rely on - spec say something ~15% failure.
+	 * Hence, we use the current offset bias register to compensate
+	 * that error.
+	 */
+
+	if (!power_supply_am_i_supplied(&di->bat))
+		return;
+
+	bias = (signed char) di->current_raw +
+		(signed char) di->raw[DS2760_CURRENT_OFFSET_BIAS];
+
+	dev_dbg(di->dev, "%s: bias = %d\n", __func__, bias);
+
+	w1_ds2760_write(di->w1_dev, &bias, DS2760_CURRENT_OFFSET_BIAS, 1);
+	w1_ds2760_store_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+	w1_ds2760_recall_eeprom(di->w1_dev, DS2760_EEPROM_BLOCK1);
+
+	/* Write to the di->raw[] buffer directly - the CURRENT_OFFSET_BIAS
+	 * value won't be read back by ds2760_battery_read_status() */
+	di->raw[DS2760_CURRENT_OFFSET_BIAS] = bias;
+}
+
+static void ds2760_battery_set_charged(struct power_supply *psy)
+{
+	struct ds2760_device_info *di = to_ds2760_device_info(psy);
+
+	/* postpone the actual work by 20 secs. This is for debouncing GPIO
+	 * signals and to let the current value settle. See AN4188. */
+	cancel_delayed_work(&di->set_charged_work);
+	queue_delayed_work(di->monitor_wqueue, &di->set_charged_work, HZ * 20);
+}
+
 static int ds2760_battery_get_property(struct power_supply *psy,
 				       enum power_supply_property psp,
 				       union power_supply_propval *val)
@@ -337,6 +412,12 @@ static int ds2760_battery_get_property(struct power_supply *psy,
 	case POWER_SUPPLY_PROP_TEMP:
 		val->intval = di->temp_C;
 		break;
+	case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
+		val->intval = di->life_sec;
+		break;
+	case POWER_SUPPLY_PROP_CAPACITY:
+		val->intval = di->rem_capacity;
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -353,6 +434,8 @@ static enum power_supply_property ds2760_battery_props[] = {
 	POWER_SUPPLY_PROP_CHARGE_EMPTY,
 	POWER_SUPPLY_PROP_CHARGE_NOW,
 	POWER_SUPPLY_PROP_TEMP,
+	POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
+	POWER_SUPPLY_PROP_CAPACITY,
 };
 
 static int ds2760_battery_probe(struct platform_device *pdev)
@@ -376,17 +459,12 @@ static int ds2760_battery_probe(struct platform_device *pdev)
 	di->bat.properties	= ds2760_battery_props;
 	di->bat.num_properties	= ARRAY_SIZE(ds2760_battery_props);
 	di->bat.get_property	= ds2760_battery_get_property;
+	di->bat.set_charged	= ds2760_battery_set_charged;
 	di->bat.external_power_changed =
 				  ds2760_battery_external_power_changed;
 
 	di->charge_status = POWER_SUPPLY_STATUS_UNKNOWN;
 
-	retval = power_supply_register(&pdev->dev, &di->bat);
-	if (retval) {
-		dev_err(di->dev, "failed to register battery\n");
-		goto batt_failed;
-	}
-
 	/* enable sleep mode feature */
 	ds2760_battery_read_status(di);
 	status = di->raw[DS2760_STATUS_REG];
@@ -397,7 +475,24 @@ static int ds2760_battery_probe(struct platform_device *pdev)
 
 	ds2760_battery_write_status(di, status);
 
+	/* set rated capacity from module param */
+	if (rated_capacity)
+		ds2760_battery_write_rated_capacity(di, rated_capacity);
+
+	/* set current accumulator if given as parameter.
+	 * this should only be done for bootstrapping the value */
+	if (current_accum)
+		ds2760_battery_set_current_accum(di, current_accum);
+
+	retval = power_supply_register(&pdev->dev, &di->bat);
+	if (retval) {
+		dev_err(di->dev, "failed to register battery\n");
+		goto batt_failed;
+	}
+
 	INIT_DELAYED_WORK(&di->monitor_work, ds2760_battery_work);
+	INIT_DELAYED_WORK(&di->set_charged_work,
+			  ds2760_battery_set_charged_work);
 	di->monitor_wqueue = create_singlethread_workqueue(dev_name(&pdev->dev));
 	if (!di->monitor_wqueue) {
 		retval = -ESRCH;
@@ -422,6 +517,8 @@ static int ds2760_battery_remove(struct platform_device *pdev)
 
 	cancel_rearming_delayed_workqueue(di->monitor_wqueue,
 					  &di->monitor_work);
+	cancel_rearming_delayed_workqueue(di->monitor_wqueue,
+					  &di->set_charged_work);
 	destroy_workqueue(di->monitor_wqueue);
 	power_supply_unregister(&di->bat);
 
diff --git a/drivers/power/olpc_battery.c b/drivers/power/olpc_battery.c
index 58e419299cd6..8fefe5a73558 100644
--- a/drivers/power/olpc_battery.c
+++ b/drivers/power/olpc_battery.c
@@ -10,7 +10,9 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/types.h>
 #include <linux/err.h>
+#include <linux/device.h>
 #include <linux/platform_device.h>
 #include <linux/power_supply.h>
 #include <linux/jiffies.h>
@@ -231,6 +233,14 @@ static int olpc_bat_get_property(struct power_supply *psy,
 		if (ret)
 			return ret;
 		break;
+	case POWER_SUPPLY_PROP_CHARGE_TYPE:
+		if (ec_byte & BAT_STAT_TRICKLE)
+			val->intval = POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+		else if (ec_byte & BAT_STAT_CHARGING)
+			val->intval = POWER_SUPPLY_CHARGE_TYPE_FAST;
+		else
+			val->intval = POWER_SUPPLY_CHARGE_TYPE_NONE;
+		break;
 	case POWER_SUPPLY_PROP_PRESENT:
 		val->intval = !!(ec_byte & (BAT_STAT_PRESENT |
 					    BAT_STAT_TRICKLE));
@@ -276,6 +286,14 @@ static int olpc_bat_get_property(struct power_supply *psy,
 			return ret;
 		val->intval = ec_byte;
 		break;
+	case POWER_SUPPLY_PROP_CAPACITY_LEVEL:
+		if (ec_byte & BAT_STAT_FULL)
+			val->intval = POWER_SUPPLY_CAPACITY_LEVEL_FULL;
+		else if (ec_byte & BAT_STAT_LOW)
+			val->intval = POWER_SUPPLY_CAPACITY_LEVEL_LOW;
+		else
+			val->intval = POWER_SUPPLY_CAPACITY_LEVEL_NORMAL;
+		break;
 	case POWER_SUPPLY_PROP_TEMP:
 		ret = olpc_ec_cmd(EC_BAT_TEMP, NULL, 0, (void *)&ec_word, 2);
 		if (ret)
@@ -315,12 +333,14 @@ static int olpc_bat_get_property(struct power_supply *psy,
 
 static enum power_supply_property olpc_bat_props[] = {
 	POWER_SUPPLY_PROP_STATUS,
+	POWER_SUPPLY_PROP_CHARGE_TYPE,
 	POWER_SUPPLY_PROP_PRESENT,
 	POWER_SUPPLY_PROP_HEALTH,
 	POWER_SUPPLY_PROP_TECHNOLOGY,
 	POWER_SUPPLY_PROP_VOLTAGE_AVG,
 	POWER_SUPPLY_PROP_CURRENT_AVG,
 	POWER_SUPPLY_PROP_CAPACITY,
+	POWER_SUPPLY_PROP_CAPACITY_LEVEL,
 	POWER_SUPPLY_PROP_TEMP,
 	POWER_SUPPLY_PROP_TEMP_AMBIENT,
 	POWER_SUPPLY_PROP_MANUFACTURER,
@@ -370,6 +390,29 @@ static struct bin_attribute olpc_bat_eeprom = {
 	.read = olpc_bat_eeprom_read,
 };
 
+/* Allow userspace to see the specific error value pulled from the EC */
+
+static ssize_t olpc_bat_error_read(struct device *dev,
+		struct device_attribute *attr, char *buf)
+{
+	uint8_t ec_byte;
+	ssize_t ret;
+
+	ret = olpc_ec_cmd(EC_BAT_ERRCODE, NULL, 0, &ec_byte, 1);
+	if (ret < 0)
+		return ret;
+
+	return sprintf(buf, "%d\n", ec_byte);
+}
+
+static struct device_attribute olpc_bat_error = {
+	.attr = {
+		.name = "error",
+		.mode = S_IRUGO,
+	},
+	.show = olpc_bat_error_read,
+};
+
 /*********************************************************************
  *		Initialisation
  *********************************************************************/
@@ -433,8 +476,14 @@ static int __init olpc_bat_init(void)
 	if (ret)
 		goto eeprom_failed;
 
+	ret = device_create_file(olpc_bat.dev, &olpc_bat_error);
+	if (ret)
+		goto error_failed;
+
 	goto success;
 
+error_failed:
+	device_remove_bin_file(olpc_bat.dev, &olpc_bat_eeprom);
 eeprom_failed:
 	power_supply_unregister(&olpc_bat);
 battery_failed:
@@ -447,6 +496,7 @@ success:
 
 static void __exit olpc_bat_exit(void)
 {
+	device_remove_file(olpc_bat.dev, &olpc_bat_error);
 	device_remove_bin_file(olpc_bat.dev, &olpc_bat_eeprom);
 	power_supply_unregister(&olpc_bat);
 	power_supply_unregister(&olpc_ac);
diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c
index 5520040449c4..cce75b40b435 100644
--- a/drivers/power/power_supply_core.c
+++ b/drivers/power/power_supply_core.c
@@ -18,7 +18,9 @@
 #include <linux/power_supply.h>
 #include "power_supply.h"
 
+/* exported for the APM Power driver, APM emulation */
 struct class *power_supply_class;
+EXPORT_SYMBOL_GPL(power_supply_class);
 
 static int __power_supply_changed_work(struct device *dev, void *data)
 {
@@ -55,6 +57,7 @@ void power_supply_changed(struct power_supply *psy)
 
 	schedule_work(&psy->changed_work);
 }
+EXPORT_SYMBOL_GPL(power_supply_changed);
 
 static int __power_supply_am_i_supplied(struct device *dev, void *data)
 {
@@ -86,6 +89,7 @@ int power_supply_am_i_supplied(struct power_supply *psy)
 
 	return error;
 }
+EXPORT_SYMBOL_GPL(power_supply_am_i_supplied);
 
 static int __power_supply_is_system_supplied(struct device *dev, void *data)
 {
@@ -110,6 +114,35 @@ int power_supply_is_system_supplied(void)
 
 	return error;
 }
+EXPORT_SYMBOL_GPL(power_supply_is_system_supplied);
+
+int power_supply_set_battery_charged(struct power_supply *psy)
+{
+	if (psy->type == POWER_SUPPLY_TYPE_BATTERY && psy->set_charged) {
+		psy->set_charged(psy);
+		return 0;
+	}
+
+	return -EINVAL;
+}
+EXPORT_SYMBOL_GPL(power_supply_set_battery_charged);
+
+static int power_supply_match_device_by_name(struct device *dev, void *data)
+{
+	const char *name = data;
+	struct power_supply *psy = dev_get_drvdata(dev);
+
+	return strcmp(psy->name, name) == 0;
+}
+
+struct power_supply *power_supply_get_by_name(char *name)
+{
+	struct device *dev = class_find_device(power_supply_class, NULL, name,
+					power_supply_match_device_by_name);
+
+	return dev ? dev_get_drvdata(dev) : NULL;
+}
+EXPORT_SYMBOL_GPL(power_supply_get_by_name);
 
 int power_supply_register(struct device *parent, struct power_supply *psy)
 {
@@ -144,6 +177,7 @@ dev_create_failed:
 success:
 	return rc;
 }
+EXPORT_SYMBOL_GPL(power_supply_register);
 
 void power_supply_unregister(struct power_supply *psy)
 {
@@ -152,6 +186,7 @@ void power_supply_unregister(struct power_supply *psy)
 	power_supply_remove_attrs(psy);
 	device_unregister(psy->dev);
 }
+EXPORT_SYMBOL_GPL(power_supply_unregister);
 
 static int __init power_supply_class_init(void)
 {
@@ -170,15 +205,6 @@ static void __exit power_supply_class_exit(void)
 	class_destroy(power_supply_class);
 }
 
-EXPORT_SYMBOL_GPL(power_supply_changed);
-EXPORT_SYMBOL_GPL(power_supply_am_i_supplied);
-EXPORT_SYMBOL_GPL(power_supply_is_system_supplied);
-EXPORT_SYMBOL_GPL(power_supply_register);
-EXPORT_SYMBOL_GPL(power_supply_unregister);
-
-/* exported for the APM Power driver, APM emulation */
-EXPORT_SYMBOL_GPL(power_supply_class);
-
 subsys_initcall(power_supply_class_init);
 module_exit(power_supply_class_exit);
 
diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c
index da73591017f9..08144393d64b 100644
--- a/drivers/power/power_supply_sysfs.c
+++ b/drivers/power/power_supply_sysfs.c
@@ -43,6 +43,9 @@ static ssize_t power_supply_show_property(struct device *dev,
 	static char *status_text[] = {
 		"Unknown", "Charging", "Discharging", "Not charging", "Full"
 	};
+	static char *charge_type[] = {
+		"Unknown", "N/A", "Trickle", "Fast"
+	};
 	static char *health_text[] = {
 		"Unknown", "Good", "Overheat", "Dead", "Over voltage",
 		"Unspecified failure", "Cold",
@@ -51,6 +54,9 @@ static ssize_t power_supply_show_property(struct device *dev,
 		"Unknown", "NiMH", "Li-ion", "Li-poly", "LiFe", "NiCd",
 		"LiMn"
 	};
+	static char *capacity_level_text[] = {
+		"Unknown", "Critical", "Low", "Normal", "High", "Full"
+	};
 	ssize_t ret;
 	struct power_supply *psy = dev_get_drvdata(dev);
 	const ptrdiff_t off = attr - power_supply_attrs;
@@ -67,10 +73,14 @@ static ssize_t power_supply_show_property(struct device *dev,
 
 	if (off == POWER_SUPPLY_PROP_STATUS)
 		return sprintf(buf, "%s\n", status_text[value.intval]);
+	else if (off == POWER_SUPPLY_PROP_CHARGE_TYPE)
+		return sprintf(buf, "%s\n", charge_type[value.intval]);
 	else if (off == POWER_SUPPLY_PROP_HEALTH)
 		return sprintf(buf, "%s\n", health_text[value.intval]);
 	else if (off == POWER_SUPPLY_PROP_TECHNOLOGY)
 		return sprintf(buf, "%s\n", technology_text[value.intval]);
+	else if (off == POWER_SUPPLY_PROP_CAPACITY_LEVEL)
+		return sprintf(buf, "%s\n", capacity_level_text[value.intval]);
 	else if (off >= POWER_SUPPLY_PROP_MODEL_NAME)
 		return sprintf(buf, "%s\n", value.strval);
 
@@ -81,6 +91,7 @@ static ssize_t power_supply_show_property(struct device *dev,
 static struct device_attribute power_supply_attrs[] = {
 	/* Properties of type `int' */
 	POWER_SUPPLY_ATTR(status),
+	POWER_SUPPLY_ATTR(charge_type),
 	POWER_SUPPLY_ATTR(health),
 	POWER_SUPPLY_ATTR(present),
 	POWER_SUPPLY_ATTR(online),
@@ -109,6 +120,7 @@ static struct device_attribute power_supply_attrs[] = {
 	POWER_SUPPLY_ATTR(energy_now),
 	POWER_SUPPLY_ATTR(energy_avg),
 	POWER_SUPPLY_ATTR(capacity),
+	POWER_SUPPLY_ATTR(capacity_level),
 	POWER_SUPPLY_ATTR(temp),
 	POWER_SUPPLY_ATTR(temp_ambient),
 	POWER_SUPPLY_ATTR(time_to_empty_now),
diff --git a/drivers/power/wm8350_power.c b/drivers/power/wm8350_power.c
index 1b16bf343f2f..28b0299c0043 100644
--- a/drivers/power/wm8350_power.c
+++ b/drivers/power/wm8350_power.c
@@ -321,6 +321,24 @@ static int wm8350_bat_check_health(struct wm8350 *wm8350)
 	return POWER_SUPPLY_HEALTH_GOOD;
 }
 
+static int wm8350_bat_get_charge_type(struct wm8350 *wm8350)
+{
+	int state;
+
+	state = wm8350_reg_read(wm8350, WM8350_BATTERY_CHARGER_CONTROL_2) &
+	    WM8350_CHG_STS_MASK;
+	switch (state) {
+	case WM8350_CHG_STS_OFF:
+		return POWER_SUPPLY_CHARGE_TYPE_NONE;
+	case WM8350_CHG_STS_TRICKLE:
+		return POWER_SUPPLY_CHARGE_TYPE_TRICKLE;
+	case WM8350_CHG_STS_FAST:
+		return POWER_SUPPLY_CHARGE_TYPE_FAST;
+	default:
+		return POWER_SUPPLY_CHARGE_TYPE_UNKNOWN;
+	}
+}
+
 static int wm8350_bat_get_property(struct power_supply *psy,
 				   enum power_supply_property psp,
 				   union power_supply_propval *val)
@@ -342,6 +360,9 @@ static int wm8350_bat_get_property(struct power_supply *psy,
 	case POWER_SUPPLY_PROP_HEALTH:
 		val->intval = wm8350_bat_check_health(wm8350);
 		break;
+	case POWER_SUPPLY_PROP_CHARGE_TYPE:
+		val->intval = wm8350_bat_get_charge_type(wm8350);
+		break;
 	default:
 		ret = -EINVAL;
 		break;
@@ -355,6 +376,7 @@ static enum power_supply_property wm8350_bat_props[] = {
 	POWER_SUPPLY_PROP_ONLINE,
 	POWER_SUPPLY_PROP_VOLTAGE_NOW,
 	POWER_SUPPLY_PROP_HEALTH,
+	POWER_SUPPLY_PROP_CHARGE_TYPE,
 };
 
 /*********************************************************************
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index 594c494ac3f0..b5d096d3a9be 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -39,6 +39,13 @@ enum {
 };
 
 enum {
+	POWER_SUPPLY_CHARGE_TYPE_UNKNOWN = 0,
+	POWER_SUPPLY_CHARGE_TYPE_NONE,
+	POWER_SUPPLY_CHARGE_TYPE_TRICKLE,
+	POWER_SUPPLY_CHARGE_TYPE_FAST,
+};
+
+enum {
 	POWER_SUPPLY_HEALTH_UNKNOWN = 0,
 	POWER_SUPPLY_HEALTH_GOOD,
 	POWER_SUPPLY_HEALTH_OVERHEAT,
@@ -58,9 +65,19 @@ enum {
 	POWER_SUPPLY_TECHNOLOGY_LiMn,
 };
 
+enum {
+	POWER_SUPPLY_CAPACITY_LEVEL_UNKNOWN = 0,
+	POWER_SUPPLY_CAPACITY_LEVEL_CRITICAL,
+	POWER_SUPPLY_CAPACITY_LEVEL_LOW,
+	POWER_SUPPLY_CAPACITY_LEVEL_NORMAL,
+	POWER_SUPPLY_CAPACITY_LEVEL_HIGH,
+	POWER_SUPPLY_CAPACITY_LEVEL_FULL,
+};
+
 enum power_supply_property {
 	/* Properties of type `int' */
 	POWER_SUPPLY_PROP_STATUS = 0,
+	POWER_SUPPLY_PROP_CHARGE_TYPE,
 	POWER_SUPPLY_PROP_HEALTH,
 	POWER_SUPPLY_PROP_PRESENT,
 	POWER_SUPPLY_PROP_ONLINE,
@@ -89,6 +106,7 @@ enum power_supply_property {
 	POWER_SUPPLY_PROP_ENERGY_NOW,
 	POWER_SUPPLY_PROP_ENERGY_AVG,
 	POWER_SUPPLY_PROP_CAPACITY, /* in percents! */
+	POWER_SUPPLY_PROP_CAPACITY_LEVEL,
 	POWER_SUPPLY_PROP_TEMP,
 	POWER_SUPPLY_PROP_TEMP_AMBIENT,
 	POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
@@ -126,6 +144,7 @@ struct power_supply {
 			    enum power_supply_property psp,
 			    union power_supply_propval *val);
 	void (*external_power_changed)(struct power_supply *psy);
+	void (*set_charged)(struct power_supply *psy);
 
 	/* For APM emulation, think legacy userspace. */
 	int use_for_apm;
@@ -165,8 +184,10 @@ struct power_supply_info {
 	int use_for_apm;
 };
 
+extern struct power_supply *power_supply_get_by_name(char *name);
 extern void power_supply_changed(struct power_supply *psy);
 extern int power_supply_am_i_supplied(struct power_supply *psy);
+extern int power_supply_set_battery_charged(struct power_supply *psy);
 
 #if defined(CONFIG_POWER_SUPPLY) || defined(CONFIG_POWER_SUPPLY_MODULE)
 extern int power_supply_is_system_supplied(void);