/* * If no AC line devices detected after boot, create an "online" event * so that userland code can adjust power settings accordingly. The default * power profile is "performance" so we don't need to repeat that here. */ static void acpi_acad_ac_only(void __unused *arg) { if (devclass_get_count(acpi_acad_devclass) == 0) acpi_UserNotify("ACAD", ACPI_ROOT_OBJECT, 1); }
/* * Thermal zone monitor thread. */ static void acpi_tz_thread(void *arg) { device_t *devs; int devcount, i; int flags; struct acpi_tz_softc **sc; ACPI_FUNCTION_TRACE((char *)(uintptr_t)__func__); devs = NULL; devcount = 0; sc = NULL; for (;;) { /* If the number of devices has changed, re-evaluate. */ if (devclass_get_count(acpi_tz_devclass) != devcount) { if (devs != NULL) { free(devs, M_TEMP); free(sc, M_TEMP); } devclass_get_devices(acpi_tz_devclass, &devs, &devcount); sc = malloc(sizeof(struct acpi_tz_softc *) * devcount, M_TEMP, M_WAITOK | M_ZERO); for (i = 0; i < devcount; i++) sc[i] = device_get_softc(devs[i]); } /* Check for temperature events and act on them. */ for (i = 0; i < devcount; i++) { ACPI_LOCK(thermal); flags = sc[i]->tz_flags; sc[i]->tz_flags &= TZ_FLAG_NO_SCP; ACPI_UNLOCK(thermal); acpi_tz_timeout(sc[i], flags); } /* If more work to do, don't go to sleep yet. */ ACPI_LOCK(thermal); for (i = 0; i < devcount; i++) { if (sc[i]->tz_flags & ~TZ_FLAG_NO_SCP) break; } /* * If we have no more work, sleep for a while, setting PDROP so that * the mutex will not be reacquired. Otherwise, drop the mutex and * loop to handle more events. */ if (i == devcount) msleep(&acpi_tz_proc, &thermal_mutex, PZERO | PDROP, "tzpoll", hz * acpi_tz_polling_rate); else ACPI_UNLOCK(thermal); } }
int acpi_battery_get_units(void) { devclass_t batt_dc; batt_dc = devclass_find("battery"); if (batt_dc == NULL) return (0); return (devclass_get_count(batt_dc)); }