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-rw-r--r--sys/dev/acpica/acpi_acad.c283
1 files changed, 283 insertions, 0 deletions
diff --git a/sys/dev/acpica/acpi_acad.c b/sys/dev/acpica/acpi_acad.c
new file mode 100644
index 0000000..8153abc
--- /dev/null
+++ b/sys/dev/acpica/acpi_acad.c
@@ -0,0 +1,283 @@
+/*-
+ * Copyright (c) 2000 Takanori Watanabe
+ * 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/bus.h>
+
+#include <machine/bus.h>
+#include <sys/rman.h>
+#include <sys/ioccom.h>
+#include <sys/malloc.h>
+#include <sys/module.h>
+#include <sys/conf.h>
+#include <sys/power.h>
+
+#include <contrib/dev/acpica/include/acpi.h>
+
+#include <dev/acpica/acpivar.h>
+#include <dev/acpica/acpiio.h>
+#include <isa/isavar.h>
+#include <isa/pnpvar.h>
+
+/* Hooks for the ACPI CA debugging infrastructure */
+#define _COMPONENT ACPI_AC_ADAPTER
+ACPI_MODULE_NAME("AC_ADAPTER")
+
+/* Number of times to retry initialization before giving up. */
+#define ACPI_ACAD_RETRY_MAX 6
+
+#define ACPI_POWERSOURCE_STAT_CHANGE 0x80
+
+struct acpi_acad_softc {
+ int status;
+};
+
+static void acpi_acad_get_status(void *);
+static void acpi_acad_notify_handler(ACPI_HANDLE, UINT32, void *);
+static int acpi_acad_probe(device_t);
+static int acpi_acad_attach(device_t);
+static int acpi_acad_ioctl(u_long, caddr_t, void *);
+static int acpi_acad_sysctl(SYSCTL_HANDLER_ARGS);
+static void acpi_acad_init_acline(void *arg);
+static void acpi_acad_ac_only(void *arg);
+
+static device_method_t acpi_acad_methods[] = {
+ /* Device interface */
+ DEVMETHOD(device_probe, acpi_acad_probe),
+ DEVMETHOD(device_attach, acpi_acad_attach),
+
+ {0, 0}
+};
+
+static driver_t acpi_acad_driver = {
+ "acpi_acad",
+ acpi_acad_methods,
+ sizeof(struct acpi_acad_softc),
+};
+
+static devclass_t acpi_acad_devclass;
+DRIVER_MODULE(acpi_acad, acpi, acpi_acad_driver, acpi_acad_devclass, 0, 0);
+MODULE_DEPEND(acpi_acad, acpi, 1, 1, 1);
+
+ACPI_SERIAL_DECL(acad, "ACPI AC adapter");
+
+SYSINIT(acad, SI_SUB_KTHREAD_IDLE, SI_ORDER_FIRST, acpi_acad_ac_only, NULL);
+
+static void
+acpi_acad_get_status(void *context)
+{
+ struct acpi_acad_softc *sc;
+ device_t dev;
+ ACPI_HANDLE h;
+ int newstatus;
+
+ dev = context;
+ sc = device_get_softc(dev);
+ h = acpi_get_handle(dev);
+ newstatus = -1;
+ acpi_GetInteger(h, "_PSR", &newstatus);
+
+ /* If status is valid and has changed, notify the system. */
+ ACPI_SERIAL_BEGIN(acad);
+ if (newstatus != -1 && sc->status != newstatus) {
+ sc->status = newstatus;
+ ACPI_SERIAL_END(acad);
+ power_profile_set_state(newstatus ? POWER_PROFILE_PERFORMANCE :
+ POWER_PROFILE_ECONOMY);
+ ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
+ "%s Line\n", newstatus ? "On" : "Off");
+ acpi_UserNotify("ACAD", h, newstatus);
+ } else
+ ACPI_SERIAL_END(acad);
+}
+
+static void
+acpi_acad_notify_handler(ACPI_HANDLE h, UINT32 notify, void *context)
+{
+ device_t dev;
+
+ dev = (device_t)context;
+ switch (notify) {
+ case ACPI_NOTIFY_BUS_CHECK:
+ case ACPI_NOTIFY_DEVICE_CHECK:
+ case ACPI_POWERSOURCE_STAT_CHANGE:
+ /* Temporarily. It is better to notify policy manager */
+ AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_acad_get_status, context);
+ break;
+ default:
+ device_printf(dev, "unknown notify %#x\n", notify);
+ break;
+ }
+}
+
+static int
+acpi_acad_probe(device_t dev)
+{
+ static char *acad_ids[] = { "ACPI0003", NULL };
+
+ if (acpi_disabled("acad") ||
+ ACPI_ID_PROBE(device_get_parent(dev), dev, acad_ids) == NULL)
+ return (ENXIO);
+
+ device_set_desc(dev, "AC Adapter");
+ return (0);
+}
+
+static int
+acpi_acad_attach(device_t dev)
+{
+ struct acpi_acad_softc *sc;
+ struct acpi_softc *acpi_sc;
+ ACPI_HANDLE handle;
+ int error;
+
+ sc = device_get_softc(dev);
+ handle = acpi_get_handle(dev);
+
+ error = acpi_register_ioctl(ACPIIO_ACAD_GET_STATUS, acpi_acad_ioctl, dev);
+ if (error != 0)
+ return (error);
+
+ if (device_get_unit(dev) == 0) {
+ acpi_sc = acpi_device_get_parent_softc(dev);
+ SYSCTL_ADD_PROC(&acpi_sc->acpi_sysctl_ctx,
+ SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree),
+ OID_AUTO, "acline", CTLTYPE_INT | CTLFLAG_RD,
+ &sc->status, 0, acpi_acad_sysctl, "I", "");
+ }
+
+ /* Get initial status after whole system is up. */
+ sc->status = -1;
+
+ /*
+ * Install both system and device notify handlers since the Casio
+ * FIVA needs them.
+ */
+ AcpiInstallNotifyHandler(handle, ACPI_ALL_NOTIFY,
+ acpi_acad_notify_handler, dev);
+ AcpiOsExecute(OSL_NOTIFY_HANDLER, acpi_acad_init_acline, dev);
+
+ return (0);
+}
+
+static int
+acpi_acad_ioctl(u_long cmd, caddr_t addr, void *arg)
+{
+ struct acpi_acad_softc *sc;
+ device_t dev;
+
+ dev = (device_t)arg;
+ sc = device_get_softc(dev);
+
+ /*
+ * No security check required: information retrieval only. If
+ * new functions are added here, a check might be required.
+ */
+ switch (cmd) {
+ case ACPIIO_ACAD_GET_STATUS:
+ acpi_acad_get_status(dev);
+ *(int *)addr = sc->status;
+ break;
+ default:
+ break;
+ }
+
+ return (0);
+}
+
+static int
+acpi_acad_sysctl(SYSCTL_HANDLER_ARGS)
+{
+ int val, error;
+
+ if (acpi_acad_get_acline(&val) != 0)
+ return (ENXIO);
+
+ val = *(u_int *)oidp->oid_arg1;
+ error = sysctl_handle_int(oidp, &val, 0, req);
+ return (error);
+}
+
+static void
+acpi_acad_init_acline(void *arg)
+{
+ struct acpi_acad_softc *sc;
+ device_t dev;
+ int retry;
+
+ dev = (device_t)arg;
+ sc = device_get_softc(dev);
+ ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
+ "acline initialization start\n");
+
+ for (retry = 0; retry < ACPI_ACAD_RETRY_MAX; retry++) {
+ acpi_acad_get_status(dev);
+ if (sc->status != -1)
+ break;
+ AcpiOsSleep(10000);
+ }
+
+ ACPI_VPRINT(dev, acpi_device_get_parent_softc(dev),
+ "acline initialization done, tried %d times\n", retry + 1);
+}
+
+/*
+ * 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);
+}
+
+/*
+ * Public interfaces.
+ */
+int
+acpi_acad_get_acline(int *status)
+{
+ struct acpi_acad_softc *sc;
+ device_t dev;
+
+ dev = devclass_get_device(acpi_acad_devclass, 0);
+ if (dev == NULL)
+ return (ENXIO);
+ sc = device_get_softc(dev);
+
+ acpi_acad_get_status(dev);
+ *status = sc->status;
+
+ return (0);
+}
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