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Commit 2a721dfc authored by Anton Vorontsov's avatar Anton Vorontsov
Browse files

apm_power: calculate to_full/to_empty time using energy 



This patch adds ability to calculate time using energy.
Needed to calculate time_to_full for PMU batteries.

Signed-off-by: default avatarAnton Vorontsov <cbou@mail.ru>
parent d385376f

drivers/power/apm_power.c

+53 −25
Original line number Diff line number Diff line
@@ -87,41 +87,63 @@ static void find_main_battery(void) 
	}

}



static int calculate_time(int status)

static int calculate_time(int status, int using_charge)

{

	union power_supply_propval charge_full, charge_empty;

	union power_supply_propval charge, I;

	union power_supply_propval full;

	union power_supply_propval empty;

	union power_supply_propval cur;

	union power_supply_propval I;

	enum power_supply_property full_prop;

	enum power_supply_property full_design_prop;

	enum power_supply_property empty_prop;

	enum power_supply_property empty_design_prop;

	enum power_supply_property cur_avg_prop;

	enum power_supply_property cur_now_prop;



	if (MPSY_PROP(CHARGE_FULL, &charge_full)) {

		/* if battery can't report this property, use design value */

		if (MPSY_PROP(CHARGE_FULL_DESIGN, &charge_full))

	if (MPSY_PROP(CURRENT_AVG, &I)) {

		/* if battery can't report average value, use momentary */

		if (MPSY_PROP(CURRENT_NOW, &I))

			return -1;

	}



	if (MPSY_PROP(CHARGE_EMPTY, &charge_empty)) {

		/* if battery can't report this property, use design value */

		if (MPSY_PROP(CHARGE_EMPTY_DESIGN, &charge_empty))

			charge_empty.intval = 0;

	if (using_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 {

		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;

	}



	if (MPSY_PROP(CHARGE_AVG, &charge)) {

		/* if battery can't report average value, use momentary */

		if (MPSY_PROP(CHARGE_NOW, &charge))

	if (_MPSY_PROP(full_prop, &full)) {

		/* if battery can't report this property, use design value */

		if (_MPSY_PROP(full_design_prop, &full))

			return -1;

	}



	if (MPSY_PROP(CURRENT_AVG, &I)) {

	if (_MPSY_PROP(empty_prop, &empty)) {

		/* if battery can't report this property, use design value */

		if (_MPSY_PROP(empty_design_prop, &empty))

			empty.intval = 0;

	}



	if (_MPSY_PROP(cur_avg_prop, &cur)) {

		/* if battery can't report average value, use momentary */

		if (MPSY_PROP(CURRENT_NOW, &I))

		if (_MPSY_PROP(cur_now_prop, &cur))

			return -1;

	}



	if (status == POWER_SUPPLY_STATUS_CHARGING)

		return ((charge.intval - charge_full.intval) * 60L) /

		       I.intval;

		return ((cur.intval - full.intval) * 60L) / I.intval;

	else

		return -((charge.intval - charge_empty.intval) * 60L) /

			I.intval;

		return -((cur.intval - empty.intval) * 60L) / I.intval;

}



static int calculate_capacity(int using_charge)
@@ -238,16 +260,22 @@ 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);

		} else {

			info->time = calculate_time(status.intval, 0);

			if (info->time == -1)

				info->time = calculate_time(status.intval, 1);

		}

	} 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);

		} else {

			info->time = calculate_time(status.intval, 0);

			if (info->time == -1)

				info->time = calculate_time(status.intval, 1);

		}

	}



	up(&power_supply_class->sem);