Merge git://git.infradead.org/battery-2.6

* git://git.infradead.org/battery-2.6:
  apm_power: check I.intval for zero value, we use it as the divisor
  MAINTAINERS: remove kernel-discuss@handhelds.org list
  pda_power: implement polling
  pda_power: various cleanups
  apm_power: support using VOLTAGE_* properties for apm calculations
  pda_power: add suspend/resume support
  power_supply: add few more values and props
  pda_power: only register available psu
  power: fix incorrect unregistration in power_supply_create_attrs error path
  power: remove POWER_SUPPLY_PROP_CAPACITY_LEVEL
  [BATTERY] power_supply_leds: use kasprintf
  [BATTERY] Every file should include the headers containing the prototypes for its global functions.

Documentation/power_supply_class.txt

@@ -87,6 +87,10 @@ batteries use voltage for very approximated calculation of capacity.
 Battery driver also can use this attribute just to inform userspace
 about maximal and minimal voltage thresholds of a given battery.
 
+VOLTAGE_MAX, VOLTAGE_MIN - same as _DESIGN voltage values except that
+these ones should be used if hardware could only guess (measure and
+retain) the thresholds of a given power supply.
+
 CHARGE_FULL_DESIGN, CHARGE_EMPTY_DESIGN - design charge values, when
 battery considered full/empty.
 
@@ -100,8 +104,6 @@ age)". I.e. these attributes represents real thresholds, not design values.
 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.

MAINTAINERS

@@ -3053,7 +3053,6 @@ M:	cbou@mail.ru
 P:	David Woodhouse
 M:	dwmw2@infradead.org
 L:	linux-kernel@vger.kernel.org
-L:	kernel-discuss@handhelds.org
 T:	git git.infradead.org/battery-2.6.git
 S:	Maintained
 

drivers/power/apm_power.c

@@ -13,7 +13,7 @@
 #include <linux/power_supply.h>
 #include <linux/apm-emulation.h>
 
-static DEFINE_MUTEX(apm_mutex);
+
 #define PSY_PROP(psy, prop, val) psy->get_property(psy, \
 			 POWER_SUPPLY_PROP_##prop, val)
 
@@ -22,8 +22,15 @@ static DEFINE_MUTEX(apm_mutex);
 
 #define MPSY_PROP(prop, val) _MPSY_PROP(POWER_SUPPLY_PROP_##prop, val)
 
+static DEFINE_MUTEX(apm_mutex);
 static struct power_supply *main_battery;
 
+enum apm_source {
+	SOURCE_ENERGY,
+	SOURCE_CHARGE,
+	SOURCE_VOLTAGE,
+};
+
 struct find_bat_param {
 	struct power_supply *main;
 	struct power_supply *bat;
@@ -107,7 +114,7 @@ static void find_main_battery(void)
 	}
 }
 
-static int calculate_time(int status, int using_charge)
+static int do_calculate_time(int status, enum apm_source source)
 {
 	union power_supply_propval full;
 	union power_supply_propval empty;
@@ -126,20 +133,37 @@ static int calculate_time(int status, int using_charge)
 			return -1;
 	}
 
-	if (using_charge) {
+	if (!I.intval)
+		return 0;
+
+	switch (source) {
+	case SOURCE_CHARGE:
 		full_prop = POWER_SUPPLY_PROP_CHARGE_FULL;
 		full_design_prop = POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN;
 		empty_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY;
 		empty_design_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY;
 		cur_avg_prop = POWER_SUPPLY_PROP_CHARGE_AVG;
 		cur_now_prop = POWER_SUPPLY_PROP_CHARGE_NOW;
-	} else {
+		break;
+	case SOURCE_ENERGY:
 		full_prop = POWER_SUPPLY_PROP_ENERGY_FULL;
 		full_design_prop = POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN;
 		empty_prop = POWER_SUPPLY_PROP_ENERGY_EMPTY;
 		empty_design_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY;
 		cur_avg_prop = POWER_SUPPLY_PROP_ENERGY_AVG;
 		cur_now_prop = POWER_SUPPLY_PROP_ENERGY_NOW;
+		break;
+	case SOURCE_VOLTAGE:
+		full_prop = POWER_SUPPLY_PROP_VOLTAGE_MAX;
+		full_design_prop = POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN;
+		empty_prop = POWER_SUPPLY_PROP_VOLTAGE_MIN;
+		empty_design_prop = POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN;
+		cur_avg_prop = POWER_SUPPLY_PROP_VOLTAGE_AVG;
+		cur_now_prop = POWER_SUPPLY_PROP_VOLTAGE_NOW;
+		break;
+	default:
+		printk(KERN_ERR "Unsupported source: %d\n", source);
+		return -1;
 	}
 
 	if (_MPSY_PROP(full_prop, &full)) {
@@ -166,28 +190,60 @@ static int calculate_time(int status, int using_charge)
 		return -((cur.intval - empty.intval) * 60L) / I.intval;
 }
 
-static int calculate_capacity(int using_charge)
+static int calculate_time(int status)
+{
+	int time;
+
+	time = do_calculate_time(status, SOURCE_ENERGY);
+	if (time != -1)
+		return time;
+
+	time = do_calculate_time(status, SOURCE_CHARGE);
+	if (time != -1)
+		return time;
+
+	time = do_calculate_time(status, SOURCE_VOLTAGE);
+	if (time != -1)
+		return time;
+
+	return -1;
+}
+
+static int calculate_capacity(enum apm_source source)
 {
 	enum power_supply_property full_prop, empty_prop;
 	enum power_supply_property full_design_prop, empty_design_prop;
 	enum power_supply_property now_prop, avg_prop;
 	union power_supply_propval empty, full, cur;
 	int ret;
 
-	if (using_charge) {
+	switch (source) {
+	case SOURCE_CHARGE:
 		full_prop = POWER_SUPPLY_PROP_CHARGE_FULL;
 		empty_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY;
 		full_design_prop = POWER_SUPPLY_PROP_CHARGE_FULL_DESIGN;
 		empty_design_prop = POWER_SUPPLY_PROP_CHARGE_EMPTY_DESIGN;
 		now_prop = POWER_SUPPLY_PROP_CHARGE_NOW;
 		avg_prop = POWER_SUPPLY_PROP_CHARGE_AVG;
-	} else {
+		break;
+	case SOURCE_ENERGY:
 		full_prop = POWER_SUPPLY_PROP_ENERGY_FULL;
 		empty_prop = POWER_SUPPLY_PROP_ENERGY_EMPTY;
 		full_design_prop = POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN;
 		empty_design_prop = POWER_SUPPLY_PROP_ENERGY_EMPTY_DESIGN;
 		now_prop = POWER_SUPPLY_PROP_ENERGY_NOW;
 		avg_prop = POWER_SUPPLY_PROP_ENERGY_AVG;
+	case SOURCE_VOLTAGE:
+		full_prop = POWER_SUPPLY_PROP_VOLTAGE_MAX;
+		empty_prop = POWER_SUPPLY_PROP_VOLTAGE_MIN;
+		full_design_prop = POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN;
+		empty_design_prop = POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN;
+		now_prop = POWER_SUPPLY_PROP_VOLTAGE_NOW;
+		avg_prop = POWER_SUPPLY_PROP_VOLTAGE_AVG;
+		break;
+	default:
+		printk(KERN_ERR "Unsupported source: %d\n", source);
+		return -1;
 	}
 
 	if (_MPSY_PROP(full_prop, &full)) {
@@ -254,10 +310,12 @@ static void apm_battery_apm_get_power_status(struct apm_power_info *info)
 		info->battery_life = capacity.intval;
 	} else {
 		/* try calculate using energy */
-		info->battery_life = calculate_capacity(0);
+		info->battery_life = calculate_capacity(SOURCE_ENERGY);
 		/* if failed try calculate using charge instead */
 		if (info->battery_life == -1)
-			info->battery_life = calculate_capacity(1);
+			info->battery_life = calculate_capacity(SOURCE_CHARGE);
+		if (info->battery_life == -1)
+			info->battery_life = calculate_capacity(SOURCE_VOLTAGE);
 	}
 
 	/* charging status */
@@ -280,22 +338,16 @@ static void apm_battery_apm_get_power_status(struct apm_power_info *info)
 
 	if (status.intval == POWER_SUPPLY_STATUS_CHARGING) {
 		if (!MPSY_PROP(TIME_TO_FULL_AVG, &time_to_full) ||
-				!MPSY_PROP(TIME_TO_FULL_NOW, &time_to_full)) {
+				!MPSY_PROP(TIME_TO_FULL_NOW, &time_to_full))
 			info->time = time_to_full.intval / 60;
-		} else {
-			info->time = calculate_time(status.intval, 0);
-			if (info->time == -1)
-				info->time = calculate_time(status.intval, 1);
-		}
+		else
+			info->time = calculate_time(status.intval);
 	} else {
 		if (!MPSY_PROP(TIME_TO_EMPTY_AVG, &time_to_empty) ||
-			      !MPSY_PROP(TIME_TO_EMPTY_NOW, &time_to_empty)) {
+			      !MPSY_PROP(TIME_TO_EMPTY_NOW, &time_to_empty))
 			info->time = time_to_empty.intval / 60;
-		} else {
-			info->time = calculate_time(status.intval, 0);
-			if (info->time == -1)
-				info->time = calculate_time(status.intval, 1);
-		}
+		else
+			info->time = calculate_time(status.intval);
 	}
 
 	mutex_unlock(&apm_mutex);

drivers/power/olpc_battery.c

@@ -226,14 +226,6 @@ 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)
@@ -265,7 +257,6 @@ static enum power_supply_property olpc_bat_props[] = {
 	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,