static int
acpi_smbat_get_bst(device_t dev, struct acpi_bst *bst)
{
struct acpi_smbat_softc *sc;
int error;
uint32_t factor;
int16_t val;
uint8_t addr;
ACPI_SERIAL_BEGIN(smbat);
addr = SMBATT_ADDRESS;
error = ENXIO;
sc = device_get_softc(dev);
if (!acpi_smbat_info_expired(&sc->bst_lastupdated)) {
error = 0;
goto out;
}
if (acpi_smbus_read_2(sc, addr, SMBATT_CMD_BATTERY_MODE, &val))
goto out;
if (val & SMBATT_BM_CAPACITY_MODE)
factor = 10;
else
factor = 1;
/* get battery status */
if (acpi_smbus_read_2(sc, addr, SMBATT_CMD_BATTERY_STATUS, &val))
goto out;
sc->bst.state = 0;
if (val & SMBATT_BS_DISCHARGING)
sc->bst.state |= ACPI_BATT_STAT_DISCHARG;
if (val & SMBATT_BS_REMAINING_CAPACITY_ALARM)
sc->bst.state |= ACPI_BATT_STAT_CRITICAL;
/*
* If the rate is negative, it is discharging. Otherwise,
* it is charging.
*/
if (acpi_smbus_read_2(sc, addr, SMBATT_CMD_CURRENT, &val))
goto out;
if (val > 0) {
sc->bst.rate = val * factor;
sc->bst.state &= ~SMBATT_BS_DISCHARGING;
sc->bst.state |= ACPI_BATT_STAT_CHARGING;
} else if (val < 0)
sc->bst.rate = (-val) * factor;
else
sc->bst.rate = 0;
if (acpi_smbus_read_2(sc, addr, SMBATT_CMD_REMAINING_CAPACITY, &val))
goto out;
sc->bst.cap = val * factor;
if (acpi_smbus_read_2(sc, addr, SMBATT_CMD_VOLTAGE, &val))
goto out;
sc->bst.volt = val;
acpi_smbat_info_updated(&sc->bst_lastupdated);
error = 0;
out:
if (error == 0)
memcpy(bst, &sc->bst, sizeof(sc->bst));
ACPI_SERIAL_END(smbat);
return (error);
}
static int
acpi_smbat_get_bif(device_t dev, struct acpi_bif *bif)
{
struct acpi_smbat_softc *sc;
int error;
uint32_t factor;
uint16_t val;
uint8_t addr;
ACPI_SERIAL_BEGIN(smbat);
addr = SMBATT_ADDRESS;
error = ENXIO;
sc = device_get_softc(dev);
if (!acpi_smbat_info_expired(&sc->bif_lastupdated)) {
error = 0;
goto out;
}
if (acpi_smbus_read_2(sc, addr, SMBATT_CMD_BATTERY_MODE, &val))
goto out;
if (val & SMBATT_BM_CAPACITY_MODE) {
factor = 10;
sc->bif.units = ACPI_BIF_UNITS_MW;
} else {
factor = 1;
sc->bif.units = ACPI_BIF_UNITS_MA;
}
if (acpi_smbus_read_2(sc, addr, SMBATT_CMD_DESIGN_CAPACITY, &val))
goto out;
sc->bif.dcap = val * factor;
if (acpi_smbus_read_2(sc, addr, SMBATT_CMD_FULL_CHARGE_CAPACITY, &val))
goto out;
sc->bif.lfcap = val * factor;
sc->bif.btech = 1; /* secondary (rechargeable) */
if (acpi_smbus_read_2(sc, addr, SMBATT_CMD_DESIGN_VOLTAGE, &val))
goto out;
sc->bif.dvol = val;
sc->bif.wcap = sc->bif.dcap / 10;
sc->bif.lcap = sc->bif.dcap / 10;
sc->bif.gra1 = factor; /* not supported */
sc->bif.gra2 = factor; /* not supported */
if (acpi_smbus_read_multi_1(sc, addr, SMBATT_CMD_DEVICE_NAME,
sc->bif.model, sizeof(sc->bif.model)))
goto out;
if (acpi_smbus_read_2(sc, addr, SMBATT_CMD_SERIAL_NUMBER, &val))
goto out;
snprintf(sc->bif.serial, sizeof(sc->bif.serial), "0x%04x", val);
if (acpi_smbus_read_multi_1(sc, addr, SMBATT_CMD_DEVICE_CHEMISTRY,
sc->bif.type, sizeof(sc->bif.type)))
goto out;
if (acpi_smbus_read_multi_1(sc, addr, SMBATT_CMD_MANUFACTURER_DATA,
sc->bif.oeminfo, sizeof(sc->bif.oeminfo)))
goto out;
/* XXX check if device was replugged during read? */
acpi_smbat_info_updated(&sc->bif_lastupdated);
error = 0;
out:
if (error == 0)
memcpy(bif, &sc->bif, sizeof(sc->bif));
ACPI_SERIAL_END(smbat);
return (error);
}
