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)) {
@@ -166,7 +190,26 @@ 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;
@@ -174,20 +217,33 @@ static int calculate_capacity(int using_charge)
 	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,

drivers/power/power_supply_leds.c

@@ -10,8 +10,11 @@
  *  You may use this code as per GPL version 2
  */
 
+#include <linux/kernel.h>
 #include <linux/power_supply.h>
 
+#include "power_supply.h"
+
 /* Battery specific LEDs triggers. */
 
 static void power_supply_update_bat_leds(struct power_supply *psy)
@@ -46,28 +49,20 @@ static int power_supply_create_bat_triggers(struct power_supply *psy)
 {
 	int rc = 0;
 
-	psy->charging_full_trig_name = kmalloc(strlen(psy->name) +
-				  sizeof("-charging-or-full"), GFP_KERNEL);
+	psy->charging_full_trig_name = kasprintf(GFP_KERNEL,
+					"%s-charging-or-full", psy->name);
 	if (!psy->charging_full_trig_name)
 		goto charging_full_failed;
 
-	psy->charging_trig_name = kmalloc(strlen(psy->name) +
-					  sizeof("-charging"), GFP_KERNEL);
+	psy->charging_trig_name = kasprintf(GFP_KERNEL,
+					"%s-charging", psy->name);
 	if (!psy->charging_trig_name)
 		goto charging_failed;
 
-	psy->full_trig_name = kmalloc(strlen(psy->name) +
-				      sizeof("-full"), GFP_KERNEL);
+	psy->full_trig_name = kasprintf(GFP_KERNEL, "%s-full", psy->name);
 	if (!psy->full_trig_name)
 		goto full_failed;
 
-	strcpy(psy->charging_full_trig_name, psy->name);
-	strcat(psy->charging_full_trig_name, "-charging-or-full");
-	strcpy(psy->charging_trig_name, psy->name);
-	strcat(psy->charging_trig_name, "-charging");
-	strcpy(psy->full_trig_name, psy->name);
-	strcat(psy->full_trig_name, "-full");
-
 	led_trigger_register_simple(psy->charging_full_trig_name,
 				    &psy->charging_full_trig);
 	led_trigger_register_simple(psy->charging_trig_name,
@@ -118,14 +113,10 @@ static int power_supply_create_gen_triggers(struct power_supply *psy)
 {
 	int rc = 0;
 
-	psy->online_trig_name = kmalloc(strlen(psy->name) + sizeof("-online"),
-					GFP_KERNEL);
+	psy->online_trig_name = kasprintf(GFP_KERNEL, "%s-online", psy->name);
 	if (!psy->online_trig_name)
 		goto online_failed;
 
-	strcpy(psy->online_trig_name, psy->name);
-	strcat(psy->online_trig_name, "-online");
-
 	led_trigger_register_simple(psy->online_trig_name, &psy->online_trig);
 
 	goto success;

drivers/power/power_supply_sysfs.c

@@ -14,6 +14,8 @@
 #include <linux/ctype.h>
 #include <linux/power_supply.h>
 
+#include "power_supply.h"
+
 /*
  * This is because the name "current" breaks the device attr macro.
  * The "current" word resolves to "(get_current())" so instead of
@@ -46,10 +48,8 @@ static ssize_t power_supply_show_property(struct device *dev,
 		"Unspecified failure"
 	};
 	static char *technology_text[] = {
-		"Unknown", "NiMH", "Li-ion", "Li-poly", "LiFe", "NiCd"
-	};
-	static char *capacity_level_text[] = {
-		"Unknown", "Critical", "Low", "Normal", "High", "Full"
+		"Unknown", "NiMH", "Li-ion", "Li-poly", "LiFe", "NiCd",
+		"LiMn"
 	};
 	ssize_t ret;
 	struct power_supply *psy = dev_get_drvdata(dev);
@@ -71,9 +71,6 @@ static ssize_t power_supply_show_property(struct device *dev,
 		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);
 
@@ -88,6 +85,8 @@ static struct device_attribute power_supply_attrs[] = {
 	POWER_SUPPLY_ATTR(present),
 	POWER_SUPPLY_ATTR(online),
 	POWER_SUPPLY_ATTR(technology),
+	POWER_SUPPLY_ATTR(voltage_max),
+	POWER_SUPPLY_ATTR(voltage_min),
 	POWER_SUPPLY_ATTR(voltage_max_design),
 	POWER_SUPPLY_ATTR(voltage_min_design),
 	POWER_SUPPLY_ATTR(voltage_now),
@@ -159,8 +158,7 @@ int power_supply_create_attrs(struct power_supply *psy)
 			   &power_supply_attrs[psy->properties[j]]);
 statics_failed:
 	while (i--)
-		device_remove_file(psy->dev,
-			   &power_supply_static_attrs[psy->properties[i]]);
+		device_remove_file(psy->dev, &power_supply_static_attrs[i]);
 succeed:
 	return rc;
 }
@@ -170,8 +168,7 @@ void power_supply_remove_attrs(struct power_supply *psy)
 	int i;
 
 	for (i = 0; i < ARRAY_SIZE(power_supply_static_attrs); i++)
-		device_remove_file(psy->dev,
-			    &power_supply_static_attrs[i]);
+		device_remove_file(psy->dev, &power_supply_static_attrs[i]);
 
 	for (i = 0; i < psy->num_properties; i++)
 		device_remove_file(psy->dev,

include/linux/pda_power.h

@@ -26,6 +26,7 @@ struct pda_power_pdata {
 
 	unsigned int wait_for_status; /* msecs, default is 500 */
 	unsigned int wait_for_charger; /* msecs, default is 500 */
+	unsigned int polling_interval; /* msecs, default is 2000 */
 };
 
 #endif /* __PDA_POWER_H__ */

include/linux/power_supply.h

@@ -54,15 +54,7 @@ enum {
 	POWER_SUPPLY_TECHNOLOGY_LIPO,
 	POWER_SUPPLY_TECHNOLOGY_LiFe,
 	POWER_SUPPLY_TECHNOLOGY_NiCd,
-};
-
-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,
+	POWER_SUPPLY_TECHNOLOGY_LiMn,
 };
 
 enum power_supply_property {
@@ -72,6 +64,8 @@ enum power_supply_property {
 	POWER_SUPPLY_PROP_PRESENT,
 	POWER_SUPPLY_PROP_ONLINE,
 	POWER_SUPPLY_PROP_TECHNOLOGY,
+	POWER_SUPPLY_PROP_VOLTAGE_MAX,
+	POWER_SUPPLY_PROP_VOLTAGE_MIN,
 	POWER_SUPPLY_PROP_VOLTAGE_MAX_DESIGN,
 	POWER_SUPPLY_PROP_VOLTAGE_MIN_DESIGN,
 	POWER_SUPPLY_PROP_VOLTAGE_NOW,
@@ -91,7 +85,6 @@ 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,