summaryrefslogtreecommitdiffstats
path: root/drivers/power
diff options
context:
space:
mode:
authorAnton Vorontsov <cbou@mail.ru>2007-10-05 01:05:00 +0400
committerAnton Vorontsov <cbou@mail.ru>2007-10-05 01:05:00 +0400
commit2a721dfc8c677588fc98d818dfad3354081c6ddb (patch)
tree93a4b90d68e3b445adc57333df07369c1c97b7af /drivers/power
parentd385376f0d75fdbeed8041ed6baf5cb4a1578ffb (diff)
downloadlinux-2a721dfc8c677588fc98d818dfad3354081c6ddb.tar.bz2
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>
Diffstat (limited to 'drivers/power')
-rw-r--r--drivers/power/apm_power.c78
1 files changed, 53 insertions, 25 deletions
diff --git a/drivers/power/apm_power.c b/drivers/power/apm_power.c
index 3928e7cdddc1..bbf3ee10da04 100644
--- a/drivers/power/apm_power.c
+++ b/drivers/power/apm_power.c
@@ -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);