diff options
| author | Jeremie Courreges-Anglas <jca@cvs.openbsd.org> | 2020-05-11 17:57:18 +0000 |
|---|---|---|
| committer | Jeremie Courreges-Anglas <jca@cvs.openbsd.org> | 2020-05-11 17:57:18 +0000 |
| commit | baa5d3a91d1f3d77734750c41f3c5faa2cad60d9 (patch) | |
| tree | 8e684c7773be1616e69d559da7765d7ea225a956 /sys/dev/acpi | |
| parent | ad429f00464a3adbb45fe8e9ce4e5a273fc16880 (diff) | |
More accurate remaining power reporting with disparate batteries
Overall remaining power was computed as the average of the remaining
power of each battery, in percents. This doesn't work with batteries of
different capacity, so use the total capacity and remaining power
instead.
Reported by lidstah, successful tests by lidstah and benno@, ok kettenis@
Diffstat (limited to 'sys/dev/acpi')
| -rw-r--r-- | sys/dev/acpi/acpi.c | 24 |
1 files changed, 11 insertions, 13 deletions
diff --git a/sys/dev/acpi/acpi.c b/sys/dev/acpi/acpi.c index e24222b3170..6f8b582d1aa 100644 --- a/sys/dev/acpi/acpi.c +++ b/sys/dev/acpi/acpi.c @@ -1,4 +1,4 @@ -/* $OpenBSD: acpi.c,v 1.383 2020/05/08 11:18:01 kettenis Exp $ */ +/* $OpenBSD: acpi.c,v 1.384 2020/05/11 17:57:17 jca Exp $ */ /* * Copyright (c) 2005 Thorsten Lockert <tholo@sigmasoft.com> * Copyright (c) 2005 Jordan Hargrave <jordan@openbsd.org> @@ -3503,7 +3503,7 @@ acpiioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) struct acpi_sbs *sbs; struct apm_power_info *pi = (struct apm_power_info *)data; int bats; - unsigned int remaining, rem, minutes, rate; + unsigned int capacity, remaining, minutes, rate; int s; if (!acpi_cd.cd_ndevs || APMUNIT(dev) != 0 || @@ -3554,7 +3554,8 @@ acpiioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) pi->battery_life = 0; pi->minutes_left = 0; bats = 0; - remaining = rem = 0; + capacity = 0; + remaining = 0; minutes = 0; rate = 0; SLIST_FOREACH(bat, &sc->sc_bat, aba_link) { @@ -3565,11 +3566,9 @@ acpiioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) continue; bats++; - rem = (bat->aba_softc->sc_bst.bst_capacity * 100) / - bat->aba_softc->sc_bix.bix_last_capacity; - if (rem > 100) - rem = 100; - remaining += rem; + capacity += bat->aba_softc->sc_bix.bix_last_capacity; + remaining += min(bat->aba_softc->sc_bst.bst_capacity, + bat->aba_softc->sc_bix.bix_last_capacity); if (bat->aba_softc->sc_bst.bst_rate == BST_UNKNOWN) continue; @@ -3587,10 +3586,9 @@ acpiioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) continue; bats++; - rem = sbs->asbs_softc->sc_battery.rel_charge; - if (rem > 100) - rem = 100; - remaining += rem; + capacity += 100; + remaining += min(100, + sbs->asbs_softc->sc_battery.rel_charge); if (sbs->asbs_softc->sc_battery.run_time == ACPISBS_VALUE_UNKNOWN) @@ -3613,7 +3611,7 @@ acpiioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p) pi->minutes_left = 60 * minutes / rate; /* running on battery */ - pi->battery_life = remaining / bats; + pi->battery_life = remaining * 100 / capacity; if (pi->battery_life > 50) pi->battery_state = APM_BATT_HIGH; else if (pi->battery_life > 25) |