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/* $NetBSD: acpi_acad.c,v 1.12 2003/11/03 18:07:10 mycroft Exp $ */
/*
* Copyright 2001 Wasabi Systems, Inc.
* All rights reserved.
*
* Written by Jason R. Thorpe for Wasabi Systems, Inc.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed for the NetBSD Project by
* Wasabi Systems, Inc.
* 4. The name of Wasabi Systems, Inc. may not be used to endorse
* or promote products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
* 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.
*/
#if 0
#define ACPI_ACAD_DEBUG
#endif
/*
* ACPI AC Adapter driver.
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: acpi_acad.c,v 1.12 2003/11/03 18:07:10 mycroft Exp $");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/device.h>
#include <dev/acpi/acpica.h>
#include <dev/acpi/acpireg.h>
#include <dev/acpi/acpivar.h>
#include <dev/sysmon/sysmonvar.h>
#define ACPIACAD_NSENSORS 2
/* sensor indexes */
#define ACPIACAD_CONNECTED 0
#define ACPIACAD_DISCONNECTED 1
struct acpiacad_softc {
struct device sc_dev; /* base device glue */
struct acpi_devnode *sc_node; /* our ACPI devnode */
int sc_flags; /* see below */
struct sysmon_envsys sc_sysmon;
struct envsys_basic_info sc_info[ACPIACAD_NSENSORS];
struct envsys_tre_data sc_data[ACPIACAD_NSENSORS];
struct simplelock sc_lock;
};
const struct envsys_range acpiacad_range[] = {
{ 0, 2, ENVSYS_INDICATOR },
{ 1, 0, -1},
};
static const char * const acad_hid[] = {
"ACPI0003",
NULL
};
#define AACAD_F_VERBOSE 0x01 /* verbose events */
#define AACAD_F_AVAILABLE 0x02 /* information is available */
#define AACAD_F_LOCKED 0x04 /* is locked? */
#define AACAD_SET(sc, f) (void)((sc)->sc_flags |= (f))
#define AACAD_CLEAR(sc, f) (void)((sc)->sc_flags &= ~(f))
#define AACAD_ISSET(sc, f) ((sc)->sc_flags & (f))
#define AACAD_ASSERT_LOCKED(sc) \
do { \
if (!((sc)->sc_flags & AACAD_F_LOCKED)) \
panic("acpi_bat (expected to be locked)"); \
} while(/*CONSTCOND*/0)
#define AACAD_ASSERT_UNLOCKED(sc) \
do { \
if (((sc)->sc_flags & AACAD_F_LOCKED)) \
panic("acpi_bat (expected to be unlocked)"); \
} while(/*CONSTCOND*/0)
#define AACAD_LOCK(sc, s) \
do { \
AACAD_ASSERT_UNLOCKED(sc); \
(s) = splhigh(); \
simple_lock(&(sc)->sc_lock); \
AACAD_SET((sc), AACAD_F_LOCKED); \
} while(/*CONSTCOND*/0)
#define AACAD_UNLOCK(sc, s) \
do { \
AACAD_ASSERT_LOCKED(sc); \
AACAD_CLEAR((sc), AACAD_F_LOCKED); \
simple_unlock(&(sc)->sc_lock); \
splx((s)); \
} while(/*CONSTCOND*/0)
static int acpiacad_match(struct device *, struct cfdata *, void *);
static void acpiacad_attach(struct device *, struct device *, void *);
CFATTACH_DECL(acpiacad, sizeof(struct acpiacad_softc),
acpiacad_match, acpiacad_attach, NULL, NULL);
static void acpiacad_get_status(void *);
static void acpiacad_clear_status(struct acpiacad_softc *);
static void acpiacad_notify_handler(ACPI_HANDLE, UINT32, void *);
static void acpiacad_init_envsys(struct acpiacad_softc *);
static int acpiacad_gtredata(struct sysmon_envsys *, struct envsys_tre_data *);
static int acpiacad_streinfo(struct sysmon_envsys *, struct envsys_basic_info *);
/*
* acpiacad_match:
*
* Autoconfiguration `match' routine.
*/
int
acpiacad_match(struct device *parent, struct cfdata *match, void *aux)
{
struct acpi_attach_args *aa = aux;
if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
return (0);
return (acpi_match_hid(aa->aa_node->ad_devinfo, acad_hid));
}
/*
* acpiacad_attach:
*
* Autoconfiguration `attach' routine.
*/
void
acpiacad_attach(struct device *parent, struct device *self, void *aux)
{
struct acpiacad_softc *sc = (void *) self;
struct acpi_attach_args *aa = aux;
ACPI_STATUS rv;
printf(": ACPI AC Adapter\n");
sc->sc_node = aa->aa_node;
simple_lock_init(&sc->sc_lock);
rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle,
ACPI_DEVICE_NOTIFY, acpiacad_notify_handler, sc);
if (ACPI_FAILURE(rv)) {
printf("%s: unable to register DEVICE NOTIFY handler: %s\n",
sc->sc_dev.dv_xname, AcpiFormatException(rv));
return;
}
/* XXX See acpiacad_notify_handler() */
rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle,
ACPI_SYSTEM_NOTIFY, acpiacad_notify_handler, sc);
if (ACPI_FAILURE(rv)) {
printf("%s: unable to register SYSTEM NOTIFY handler: %s\n",
sc->sc_dev.dv_xname, AcpiFormatException(rv));
return;
}
#ifdef ACPI_ACAD_DEBUG
/* Display the current state. */
sc->sc_flags = AACAD_F_VERBOSE;
#endif
acpiacad_init_envsys(sc);
}
/*
* acpiacad_get_status:
*
* Get, and possibly display, the current AC line status.
*/
void
acpiacad_get_status(void *arg)
{
struct acpiacad_softc *sc = arg;
int status, s;
ACPI_STATUS rv;
rv = acpi_eval_integer(sc->sc_node->ad_handle, "_PSR", &status);
if (ACPI_FAILURE(rv))
return;
AACAD_LOCK(sc, s);
sc->sc_data[ACPIACAD_CONNECTED].cur.data_s = !!(status);
sc->sc_data[ACPIACAD_DISCONNECTED].cur.data_s = !(status);
AACAD_SET(sc, AACAD_F_AVAILABLE);
AACAD_UNLOCK(sc, s);
if (AACAD_ISSET(sc, AACAD_F_VERBOSE))
printf("%s: AC adapter %sconnected\n",
sc->sc_dev.dv_xname, status == 0 ? "not " : "");
}
/*
* Clear status
*/
void
acpiacad_clear_status(struct acpiacad_softc *sc)
{
AACAD_ASSERT_LOCKED(sc);
sc->sc_data[ACPIACAD_CONNECTED].cur.data_s = 0;
sc->sc_data[ACPIACAD_DISCONNECTED].cur.data_s = 0;
AACAD_CLEAR(sc, AACAD_F_AVAILABLE);
}
/*
* acpiacad_notify_handler:
*
* Callback from ACPI interrupt handler to notify us of an event.
*/
void
acpiacad_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context)
{
struct acpiacad_softc *sc = context;
int rv, s;
switch (notify) {
/*
* XXX So, BusCheck is not exactly what I would expect,
* but at least my IBM T21 sends it on AC adapter status
* change. --thorpej@wasabisystems.com
*/
case ACPI_NOTIFY_BusCheck:
case ACPI_NOTIFY_PowerSourceStatusChanged:
#ifdef ACPI_ACAD_DEBUG
printf("%s: received notify message: 0x%x\n",
sc->sc_dev.dv_xname, notify);
#endif
AACAD_LOCK(sc, s);
acpiacad_clear_status(sc);
AACAD_UNLOCK(sc, s);
rv = AcpiOsQueueForExecution(OSD_PRIORITY_LO,
acpiacad_get_status, sc);
if (ACPI_FAILURE(rv))
printf("%s: unable to queue status check: %s\n",
sc->sc_dev.dv_xname, AcpiFormatException(rv));
break;
default:
printf("%s: received unknown notify message: 0x%x\n",
sc->sc_dev.dv_xname, notify);
}
}
void
acpiacad_init_envsys(struct acpiacad_softc *sc)
{
int i;
sc->sc_sysmon.sme_ranges = acpiacad_range;
for (i=0; i<ACPIACAD_NSENSORS; i++) {
sc->sc_data[i].sensor = sc->sc_info[i].sensor = i;
sc->sc_data[i].validflags |= (ENVSYS_FVALID | ENVSYS_FCURVALID);
sc->sc_info[i].validflags = ENVSYS_FVALID;
sc->sc_data[i].warnflags = 0;
}
#define INITDATA(index, unit, string) \
sc->sc_data[index].units = unit; \
sc->sc_info[index].units = unit; \
snprintf(sc->sc_info[index].desc, sizeof(sc->sc_info->desc), \
"%s %s", sc->sc_dev.dv_xname, string); \
INITDATA(ACPIACAD_CONNECTED, ENVSYS_INDICATOR, "connected");
INITDATA(ACPIACAD_DISCONNECTED, ENVSYS_INDICATOR, "disconnected");
sc->sc_sysmon.sme_sensor_info = sc->sc_info;
sc->sc_sysmon.sme_sensor_data = sc->sc_data;
sc->sc_sysmon.sme_cookie = sc;
sc->sc_sysmon.sme_gtredata = acpiacad_gtredata;
sc->sc_sysmon.sme_streinfo = acpiacad_streinfo;
sc->sc_sysmon.sme_nsensors = ACPIACAD_NSENSORS;
sc->sc_sysmon.sme_envsys_version = 1000;
if (sysmon_envsys_register(&sc->sc_sysmon))
printf("%s: unable to register with sysmon\n",
sc->sc_dev.dv_xname);
}
int
acpiacad_gtredata(struct sysmon_envsys *sme, struct envsys_tre_data *tred)
{
struct acpiacad_softc *sc = sme->sme_cookie;
if (!AACAD_ISSET(sc, AACAD_F_AVAILABLE))
acpiacad_get_status(sc);
/* XXX locking */
*tred = sc->sc_data[tred->sensor];
/* XXX locking */
return (0);
}
int
acpiacad_streinfo(struct sysmon_envsys *sme, struct envsys_basic_info *binfo)
{
/* XXX Not implemented */
binfo->validflags = 0;
return (0);
}
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