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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: Anton Vorontsov <cbou@mail.ru>
This commit is contained in:
Anton Vorontsov 2007-10-05 01:05:00 +04:00
parent d385376f0d
commit 2a721dfc8c
1 changed files with 59 additions and 31 deletions
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90
drivers/power/apm_power.c
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@ -87,28 +87,18 @@ 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;
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))
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 (MPSY_PROP(CHARGE_AVG, &charge)) {
/* if battery can't report average value, use momentary */
if (MPSY_PROP(CHARGE_NOW, &charge))
return -1;
}
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(CURRENT_AVG, &I)) {
/* if battery can't report average value, use momentary */
@ -116,12 +106,44 @@ static int calculate_time(int status)
return -1;
}
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(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(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(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);