6472ac3d8a
The SYSCTL_NODE macro defines a list that stores all child-elements of that node. If there's no SYSCTL_DECL macro anywhere else, there's no reason why it shouldn't be static.
495 lines
12 KiB
C
495 lines
12 KiB
C
/*-
|
|
* Copyright (c) 2005 Hans Petter Selasky
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
#include "opt_acpi.h"
|
|
#include <sys/param.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/module.h>
|
|
#include <sys/bus.h>
|
|
|
|
#include <contrib/dev/acpica/include/acpi.h>
|
|
|
|
#include <dev/acpica/acpivar.h>
|
|
#include <dev/acpica/acpiio.h>
|
|
#include <dev/acpica/acpi_smbus.h>
|
|
|
|
/* Transactions have failed after 500 ms. */
|
|
#define SMBUS_TIMEOUT 50
|
|
|
|
struct acpi_smbat_softc {
|
|
uint8_t sb_base_addr;
|
|
device_t ec_dev;
|
|
|
|
struct acpi_bif bif;
|
|
struct acpi_bst bst;
|
|
struct timespec bif_lastupdated;
|
|
struct timespec bst_lastupdated;
|
|
};
|
|
|
|
static int acpi_smbat_probe(device_t dev);
|
|
static int acpi_smbat_attach(device_t dev);
|
|
static int acpi_smbat_shutdown(device_t dev);
|
|
static int acpi_smbat_info_expired(struct timespec *lastupdated);
|
|
static void acpi_smbat_info_updated(struct timespec *lastupdated);
|
|
static int acpi_smbat_get_bif(device_t dev, struct acpi_bif *bif);
|
|
static int acpi_smbat_get_bst(device_t dev, struct acpi_bst *bst);
|
|
|
|
ACPI_SERIAL_DECL(smbat, "ACPI Smart Battery");
|
|
|
|
SYSCTL_DECL(_debug_acpi);
|
|
static SYSCTL_NODE(_debug_acpi, OID_AUTO, batt, CTLFLAG_RD, NULL,
|
|
"Battery debugging");
|
|
|
|
/* On some laptops with smart batteries, enabling battery monitoring
|
|
* software causes keystrokes from atkbd to be lost. This has also been
|
|
* reported on Linux, and is apparently due to the keyboard and I2C line
|
|
* for the battery being routed through the same chip. Whether that's
|
|
* accurate or not, adding extra sleeps to the status checking code
|
|
* causes the problem to go away.
|
|
*
|
|
* If you experience that problem, try a value of 10ms and move up
|
|
* from there.
|
|
*/
|
|
static int batt_sleep_ms;
|
|
SYSCTL_INT(_debug_acpi_batt, OID_AUTO, batt_sleep_ms, CTLFLAG_RW, &batt_sleep_ms, 0,
|
|
"Sleep during battery status updates to prevent keystroke loss.");
|
|
|
|
static device_method_t acpi_smbat_methods[] = {
|
|
/* device interface */
|
|
DEVMETHOD(device_probe, acpi_smbat_probe),
|
|
DEVMETHOD(device_attach, acpi_smbat_attach),
|
|
DEVMETHOD(device_shutdown, acpi_smbat_shutdown),
|
|
|
|
/* ACPI battery interface */
|
|
DEVMETHOD(acpi_batt_get_status, acpi_smbat_get_bst),
|
|
DEVMETHOD(acpi_batt_get_info, acpi_smbat_get_bif),
|
|
|
|
{0, 0}
|
|
};
|
|
|
|
static driver_t acpi_smbat_driver = {
|
|
"battery",
|
|
acpi_smbat_methods,
|
|
sizeof(struct acpi_smbat_softc),
|
|
};
|
|
|
|
static devclass_t acpi_smbat_devclass;
|
|
DRIVER_MODULE(acpi_smbat, acpi, acpi_smbat_driver, acpi_smbat_devclass, 0, 0);
|
|
MODULE_DEPEND(acpi_smbat, acpi, 1, 1, 1);
|
|
|
|
static int
|
|
acpi_smbat_probe(device_t dev)
|
|
{
|
|
static char *smbat_ids[] = {"ACPI0001", "ACPI0005", NULL};
|
|
ACPI_STATUS status;
|
|
|
|
if (acpi_disabled("smbat") ||
|
|
ACPI_ID_PROBE(device_get_parent(dev), dev, smbat_ids) == NULL)
|
|
return (ENXIO);
|
|
status = AcpiEvaluateObject(acpi_get_handle(dev), "_EC", NULL, NULL);
|
|
if (ACPI_FAILURE(status))
|
|
return (ENXIO);
|
|
|
|
device_set_desc(dev, "ACPI Smart Battery");
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
acpi_smbat_attach(device_t dev)
|
|
{
|
|
struct acpi_smbat_softc *sc;
|
|
uint32_t base;
|
|
|
|
sc = device_get_softc(dev);
|
|
if (ACPI_FAILURE(acpi_GetInteger(acpi_get_handle(dev), "_EC", &base))) {
|
|
device_printf(dev, "cannot get EC base address\n");
|
|
return (ENXIO);
|
|
}
|
|
sc->sb_base_addr = (base >> 8) & 0xff;
|
|
|
|
/* XXX Only works with one EC, but nearly all systems only have one. */
|
|
sc->ec_dev = devclass_get_device(devclass_find("acpi_ec"), 0);
|
|
if (sc->ec_dev == NULL) {
|
|
device_printf(dev, "cannot find EC device\n");
|
|
return (ENXIO);
|
|
}
|
|
|
|
timespecclear(&sc->bif_lastupdated);
|
|
timespecclear(&sc->bst_lastupdated);
|
|
|
|
if (acpi_battery_register(dev) != 0) {
|
|
device_printf(dev, "cannot register battery\n");
|
|
return (ENXIO);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
acpi_smbat_shutdown(device_t dev)
|
|
{
|
|
|
|
acpi_battery_remove(dev);
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
acpi_smbat_info_expired(struct timespec *lastupdated)
|
|
{
|
|
struct timespec curtime;
|
|
|
|
ACPI_SERIAL_ASSERT(smbat);
|
|
|
|
if (lastupdated == NULL)
|
|
return (TRUE);
|
|
if (!timespecisset(lastupdated))
|
|
return (TRUE);
|
|
|
|
getnanotime(&curtime);
|
|
timespecsub(&curtime, lastupdated);
|
|
return (curtime.tv_sec < 0 ||
|
|
curtime.tv_sec > acpi_battery_get_info_expire());
|
|
}
|
|
|
|
static void
|
|
acpi_smbat_info_updated(struct timespec *lastupdated)
|
|
{
|
|
|
|
ACPI_SERIAL_ASSERT(smbat);
|
|
|
|
if (lastupdated != NULL)
|
|
getnanotime(lastupdated);
|
|
}
|
|
|
|
static int
|
|
acpi_smbus_read_2(struct acpi_smbat_softc *sc, uint8_t addr, uint8_t cmd,
|
|
uint16_t *ptr)
|
|
{
|
|
int error, to;
|
|
UINT64 val;
|
|
|
|
ACPI_SERIAL_ASSERT(smbat);
|
|
|
|
if (batt_sleep_ms)
|
|
AcpiOsSleep(batt_sleep_ms);
|
|
|
|
val = addr;
|
|
error = ACPI_EC_WRITE(sc->ec_dev, sc->sb_base_addr + SMBUS_ADDR,
|
|
val, 1);
|
|
if (error)
|
|
goto out;
|
|
|
|
val = cmd;
|
|
error = ACPI_EC_WRITE(sc->ec_dev, sc->sb_base_addr + SMBUS_CMD,
|
|
val, 1);
|
|
if (error)
|
|
goto out;
|
|
|
|
val = 0x09; /* | 0x80 if PEC */
|
|
error = ACPI_EC_WRITE(sc->ec_dev, sc->sb_base_addr + SMBUS_PRTCL,
|
|
val, 1);
|
|
if (error)
|
|
goto out;
|
|
|
|
if (batt_sleep_ms)
|
|
AcpiOsSleep(batt_sleep_ms);
|
|
|
|
for (to = SMBUS_TIMEOUT; to != 0; to--) {
|
|
error = ACPI_EC_READ(sc->ec_dev, sc->sb_base_addr + SMBUS_PRTCL,
|
|
&val, 1);
|
|
if (error)
|
|
goto out;
|
|
if (val == 0)
|
|
break;
|
|
AcpiOsSleep(10);
|
|
}
|
|
if (to == 0) {
|
|
error = ETIMEDOUT;
|
|
goto out;
|
|
}
|
|
|
|
error = ACPI_EC_READ(sc->ec_dev, sc->sb_base_addr + SMBUS_STS, &val, 1);
|
|
if (error)
|
|
goto out;
|
|
if (val & SMBUS_STS_MASK) {
|
|
printf("%s: AE_ERROR 0x%x\n",
|
|
__FUNCTION__, (int)(val & SMBUS_STS_MASK));
|
|
error = EIO;
|
|
goto out;
|
|
}
|
|
|
|
error = ACPI_EC_READ(sc->ec_dev, sc->sb_base_addr + SMBUS_DATA,
|
|
&val, 2);
|
|
if (error)
|
|
goto out;
|
|
|
|
*ptr = val;
|
|
|
|
out:
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
acpi_smbus_read_multi_1(struct acpi_smbat_softc *sc, uint8_t addr, uint8_t cmd,
|
|
uint8_t *ptr, uint16_t len)
|
|
{
|
|
UINT64 val;
|
|
uint8_t to;
|
|
int error;
|
|
|
|
ACPI_SERIAL_ASSERT(smbat);
|
|
|
|
if (batt_sleep_ms)
|
|
AcpiOsSleep(batt_sleep_ms);
|
|
|
|
val = addr;
|
|
error = ACPI_EC_WRITE(sc->ec_dev, sc->sb_base_addr + SMBUS_ADDR,
|
|
val, 1);
|
|
if (error)
|
|
goto out;
|
|
|
|
val = cmd;
|
|
error = ACPI_EC_WRITE(sc->ec_dev, sc->sb_base_addr + SMBUS_CMD,
|
|
val, 1);
|
|
if (error)
|
|
goto out;
|
|
|
|
val = 0x0B /* | 0x80 if PEC */ ;
|
|
error = ACPI_EC_WRITE(sc->ec_dev, sc->sb_base_addr + SMBUS_PRTCL,
|
|
val, 1);
|
|
if (error)
|
|
goto out;
|
|
|
|
if (batt_sleep_ms)
|
|
AcpiOsSleep(batt_sleep_ms);
|
|
|
|
for (to = SMBUS_TIMEOUT; to != 0; to--) {
|
|
error = ACPI_EC_READ(sc->ec_dev, sc->sb_base_addr + SMBUS_PRTCL,
|
|
&val, 1);
|
|
if (error)
|
|
goto out;
|
|
if (val == 0)
|
|
break;
|
|
AcpiOsSleep(10);
|
|
}
|
|
if (to == 0) {
|
|
error = ETIMEDOUT;
|
|
goto out;
|
|
}
|
|
|
|
error = ACPI_EC_READ(sc->ec_dev, sc->sb_base_addr + SMBUS_STS, &val, 1);
|
|
if (error)
|
|
goto out;
|
|
if (val & SMBUS_STS_MASK) {
|
|
printf("%s: AE_ERROR 0x%x\n",
|
|
__FUNCTION__, (int)(val & SMBUS_STS_MASK));
|
|
error = EIO;
|
|
goto out;
|
|
}
|
|
|
|
/* get length */
|
|
error = ACPI_EC_READ(sc->ec_dev, sc->sb_base_addr + SMBUS_BCNT,
|
|
&val, 1);
|
|
if (error)
|
|
goto out;
|
|
val = (val & 0x1f) + 1;
|
|
|
|
bzero(ptr, len);
|
|
if (len > val)
|
|
len = val;
|
|
|
|
if (batt_sleep_ms)
|
|
AcpiOsSleep(batt_sleep_ms);
|
|
|
|
while (len--) {
|
|
error = ACPI_EC_READ(sc->ec_dev, sc->sb_base_addr + SMBUS_DATA
|
|
+ len, &val, 1);
|
|
if (error)
|
|
goto out;
|
|
|
|
ptr[len] = val;
|
|
if (batt_sleep_ms)
|
|
AcpiOsSleep(batt_sleep_ms);
|
|
}
|
|
|
|
out:
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
acpi_smbat_get_bst(device_t dev, struct acpi_bst *bst)
|
|
{
|
|
struct acpi_smbat_softc *sc;
|
|
int error;
|
|
uint32_t cap_units, 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;
|
|
cap_units = ACPI_BIF_UNITS_MW;
|
|
} else {
|
|
factor = 1;
|
|
cap_units = ACPI_BIF_UNITS_MA;
|
|
}
|
|
|
|
/* 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);
|
|
}
|