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/* $OpenBSD: acpidock.c,v 1.42 2010/07/27 01:21:19 jordan Exp $ */
/*
* Copyright (c) 2006,2007 Michael Knudsen <mk@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <sys/malloc.h>
#include <sys/sensors.h>
#include <machine/bus.h>
#include <dev/acpi/acpireg.h>
#include <dev/acpi/acpivar.h>
#include <dev/acpi/acpidev.h>
#include <dev/acpi/amltypes.h>
#include <dev/acpi/dsdt.h>
struct aml_nodelist {
struct aml_node *node;
TAILQ_ENTRY(aml_nodelist) entries;
};
int acpidock_match(struct device *, void *, void *);
void acpidock_attach(struct device *, struct device *, void *);
struct cfattach acpidock_ca = {
sizeof(struct acpidock_softc), acpidock_match, acpidock_attach
};
struct cfdriver acpidock_cd = {
NULL, "acpidock", DV_DULL
};
int acpidock_docklock(struct acpidock_softc *, int);
int acpidock_dockctl(struct acpidock_softc *, int);
int acpidock_eject(struct acpidock_softc *, struct aml_node *);
int acpidock_notify(struct aml_node *, int, void *);
int acpidock_status(struct acpidock_softc *);
int acpidock_walkchildren(struct aml_node *, void *);
int acpidock_foundejd(struct aml_node *, void *);
int
acpidock_match(struct device *parent, void *match, void *aux)
{
struct acpi_attach_args *aaa = aux;
struct cfdata *cf = match;
/* sanity */
if (aaa->aaa_name == NULL ||
strcmp(aaa->aaa_name, cf->cf_driver->cd_name) != 0 ||
aaa->aaa_table != NULL)
return (0);
return (1);
}
void
acpidock_attach(struct device *parent, struct device *self, void *aux)
{
struct acpidock_softc *sc = (struct acpidock_softc *)self;
struct acpi_attach_args *aa = aux;
extern struct aml_node aml_root;
sc->sc_acpi = (struct acpi_softc *)parent;
sc->sc_devnode = aa->aaa_node;
printf(": %s", sc->sc_devnode->name);
acpidock_status(sc);
if (sc->sc_docked == ACPIDOCK_STATUS_DOCKED) {
acpidock_docklock(sc, 1);
acpidock_dockctl(sc, 1);
}
acpidock_status(sc);
printf("%s docked (%d)\n",
sc->sc_docked == ACPIDOCK_STATUS_DOCKED ? "" : " not",
sc->sc_sta);
strlcpy(sc->sc_sensdev.xname, DEVNAME(sc),
sizeof(sc->sc_sensdev.xname));
if (sc->sc_docked)
strlcpy(sc->sc_sens.desc, "docked",
sizeof(sc->sc_sens.desc));
else
strlcpy(sc->sc_sens.desc, "not docked",
sizeof(sc->sc_sens.desc));
sc->sc_sens.type = SENSOR_INDICATOR;
sc->sc_sens.value = sc->sc_docked == ACPIDOCK_STATUS_DOCKED;
sensor_attach(&sc->sc_sensdev, &sc->sc_sens);
sensordev_install(&sc->sc_sensdev);
TAILQ_INIT(&sc->sc_deps_h);
aml_find_node(&aml_root, "_EJD", acpidock_foundejd, sc);
aml_register_notify(sc->sc_devnode, aa->aaa_dev,
acpidock_notify, sc, ACPIDEV_NOPOLL);
}
int
acpidock_status(struct acpidock_softc *sc)
{
int64_t sta;
int rv;
if (aml_evalinteger(sc->sc_acpi, sc->sc_devnode, "_STA", 0, NULL,
&sta) != 0) {
sta = 0;
rv = 0;
} else
rv = 1;
sc->sc_sta = sta;
sc->sc_docked = sc->sc_sta & STA_PRESENT;
return (rv);
}
int
acpidock_docklock(struct acpidock_softc *sc, int lock)
{
struct aml_value cmd;
struct aml_value res;
int rv;
memset(&cmd, 0, sizeof cmd);
cmd.v_integer = lock;
cmd.type = AML_OBJTYPE_INTEGER;
if (aml_evalname(sc->sc_acpi, sc->sc_devnode, "_LCK", 1, &cmd,
&res) != 0) {
dnprintf(20, "%s: _LCK %d failed\n", DEVNAME(sc), lock);
rv = 0;
} else {
dnprintf(20, "%s: _LCK %d successful\n", DEVNAME(sc), lock);
rv = 1;
}
aml_freevalue(&res);
return (rv);
}
int
acpidock_dockctl(struct acpidock_softc *sc, int dock)
{
struct aml_value cmd;
struct aml_value res;
int rv;
memset(&cmd, 0, sizeof cmd);
cmd.v_integer = dock;
cmd.type = AML_OBJTYPE_INTEGER;
if (aml_evalname(sc->sc_acpi, sc->sc_devnode, "_DCK", 1, &cmd,
&res) != 0) {
dnprintf(15, "%s: _DCK %d failed\n", DEVNAME(sc), dock);
rv = 0;
} else {
dnprintf(15, "%s: _DCK %d successful\n", DEVNAME(sc), dock);
rv = 1;
}
aml_freevalue(&res);
return (rv);
}
int
acpidock_eject(struct acpidock_softc *sc, struct aml_node *node)
{
struct aml_value cmd;
struct aml_value res;
int rv;
if (node != sc->sc_devnode)
aml_notify(node, 3);
memset(&cmd, 0, sizeof cmd);
cmd.v_integer = 1;
cmd.type = AML_OBJTYPE_INTEGER;
if (aml_evalname(sc->sc_acpi, node, "_EJ0", 1, &cmd,
&res) != 0) {
dnprintf(15, "%s: _EJ0 failed\n", DEVNAME(sc));
rv = 0;
} else {
dnprintf(15, "%s: _EJ0 successful\n", DEVNAME(sc));
rv = 1;
}
aml_freevalue(&res);
return (rv);
}
int
acpidock_notify(struct aml_node *node, int notify_type, void *arg)
{
struct acpidock_softc *sc = arg;
struct aml_nodelist *n;
dnprintf(5, "%s: acpidock_notify: notify %d\n", DEVNAME(sc),
notify_type);
switch (notify_type) {
case ACPIDOCK_EVENT_INSERT:
acpidock_docklock(sc, 1);
acpidock_dockctl(sc, 1);
TAILQ_FOREACH_REVERSE(n, &sc->sc_deps_h, aml_nodelisth, entries)
aml_notify(n->node, 0x00);
break;
case ACPIDOCK_EVENT_EJECT:
case ACPIDOCK_EVENT_DEVCHECK:
/* ACPI Spec says eject button press generates
* a Notify(Device, 1); */
TAILQ_FOREACH(n, &sc->sc_deps_h, entries)
acpidock_eject(sc, n->node);
acpidock_dockctl(sc, 0);
acpidock_docklock(sc, 0);
/* now actually undock */
acpidock_eject(sc, sc->sc_devnode);
break;
}
acpidock_status(sc);
sc->sc_sens.value = sc->sc_docked == ACPIDOCK_STATUS_DOCKED;
if (sc->sc_docked)
strlcpy(sc->sc_sens.desc, "docked",
sizeof(sc->sc_sens.desc));
else
strlcpy(sc->sc_sens.desc, "not docked",
sizeof(sc->sc_sens.desc));
printf("%s: %s\n",
DEVNAME(sc), sc->sc_docked == ACPIDOCK_STATUS_DOCKED ?
"docked" : "undocked");
return (0);
}
int
acpidock_walkchildren(struct aml_node *node, void *arg)
{
struct acpidock_softc *sc = arg;
struct aml_nodelist *n;
if (node && node->value && node->value->type == AML_OBJTYPE_DEVICE) {
n = malloc(sizeof *n, M_DEVBUF, M_WAITOK | M_ZERO);
n->node = node;
dnprintf(10,"%s depends on", aml_nodename(node));
dnprintf(10,"%s\n", aml_nodename(sc->sc_devnode));
TAILQ_INSERT_TAIL(&sc->sc_deps_h, n, entries);
}
return (0);
}
int
acpidock_foundejd(struct aml_node *node, void *arg)
{
struct acpidock_softc *sc = (struct acpidock_softc *)arg;
struct aml_value res;
struct aml_node *dock;
extern struct aml_node aml_root;
dnprintf(15, "%s: %s", DEVNAME(sc), node->name);
if (aml_evalnode(sc->sc_acpi, node, 0, NULL, &res) == -1)
printf(": error\n");
else {
dock = aml_searchname(&aml_root, res.v_string);
if (dock == sc->sc_devnode)
/* Add all children devices of Device containing _EJD */
aml_walknodes(node->parent, AML_WALK_POST,
acpidock_walkchildren, sc);
aml_freevalue(&res);
}
return (0);
}
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