272 lines
7.3 KiB
C
272 lines
7.3 KiB
C
/* $NetBSD: dalb_acpi.c,v 1.3 2009/09/16 10:47:55 mlelstv Exp $ */
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/*-
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* Copyright (c) 2008 Christoph Egger <cegger@netbsd.org>
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* Copyright (c) 2008 Jared D. McNeill <jmcneill@netbsd.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: dalb_acpi.c,v 1.3 2009/09/16 10:47:55 mlelstv Exp $");
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/*
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* Direct Application Launch Button:
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* http://www.microsoft.com/whdc/system/vista/DirAppLaunch.mspx
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/device.h>
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#include <sys/proc.h>
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#include <sys/kernel.h>
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#include <sys/callout.h>
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#include <sys/sysctl.h>
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#include <machine/bus.h>
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#include <dev/acpi/acpica.h>
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#include <dev/acpi/acpivar.h>
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#include <dev/acpi/acpireg.h>
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#define _COMPONENT ACPI_RESOURCE_COMPONENT
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ACPI_MODULE_NAME ("dalb_acpi")
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#define DALB_ID_INVALID -1
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struct acpi_dalb_softc {
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device_t sc_dev;
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struct acpi_devnode *sc_node;
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struct sysctllog *sc_log;
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ACPI_INTEGER sc_usageid;
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/* There's one PNP0C32 ACPI device for each button.
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* Therefore, one instance is enough. */
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struct sysmon_pswitch sc_smpsw;
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bool sc_smpsw_valid;
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};
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static int acpi_dalb_match(device_t, cfdata_t, void *);
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static void acpi_dalb_attach(device_t, device_t, void *);
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static void acpi_dalb_notify_handler(ACPI_HANDLE, UINT32, void *);
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static bool acpi_dalb_resume(device_t PMF_FN_PROTO);
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static void acpi_dalb_get_wakeup_hotkeys(void *opaque);
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static void acpi_dalb_get_runtime_hotkeys(void *opaque);
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CFATTACH_DECL_NEW(acpidalb, sizeof(struct acpi_dalb_softc),
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acpi_dalb_match, acpi_dalb_attach, NULL, NULL);
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static const char * const acpi_dalb_ids[] = {
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"PNP0C32", /* Direct Application Launch Button */
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NULL
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};
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#ifdef DEBUG
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#define DPRINTF(x) printf x
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#else
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#define DPRINTF(x)
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#endif
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#define DALB_SYSTEM_WAKEUP 0x02
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#define DALB_SYSTEM_RUNTIME 0x80
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static int
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acpi_dalb_match(device_t parent, cfdata_t match, void *aux)
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{
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struct acpi_attach_args *aa = aux;
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if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
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return 0;
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return acpi_match_hid(aa->aa_node->ad_devinfo, acpi_dalb_ids);
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}
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static void
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acpi_dalb_sysmon_init(struct acpi_dalb_softc *sc)
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{
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sc->sc_smpsw_valid = true;
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sc->sc_smpsw.smpsw_name = device_xname(sc->sc_dev);
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sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_HOTKEY;
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if (sysmon_pswitch_register(&sc->sc_smpsw)) {
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aprint_error_dev(sc->sc_dev,
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"couldn't register sleep with sysmon\n");
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sc->sc_smpsw_valid = false;
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}
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}
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static void
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acpi_dalb_init(device_t dev)
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{
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struct acpi_dalb_softc *sc = device_private(dev);
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ACPI_OBJECT *obj;
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ACPI_STATUS rv;
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ACPI_BUFFER ret;
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ret.Pointer = NULL;
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ret.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
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rv = AcpiEvaluateObject(sc->sc_node->ad_handle, "GHID", NULL, &ret);
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if (ACPI_FAILURE(rv) || ret.Pointer == NULL) {
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aprint_error_dev(dev,
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"couldn't enable notify handler: (%s)\n",
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AcpiFormatException(rv));
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return;
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}
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obj = (ACPI_OBJECT *)ret.Pointer;
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if (obj->Type != ACPI_TYPE_BUFFER) {
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sc->sc_usageid = DALB_ID_INVALID;
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aprint_debug_dev(dev, "invalid ACPI type: %d\n", obj->Type);
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goto out;
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}
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switch (obj->Buffer.Length) {
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case 1:
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sc->sc_usageid = *(uint8_t *)obj->Buffer.Pointer;
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break;
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case 2:
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sc->sc_usageid = le16toh(*(uint16_t *)obj->Buffer.Pointer);
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break;
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case 4:
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sc->sc_usageid = le32toh(*(uint32_t *)obj->Buffer.Pointer);
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break;
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default:
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aprint_debug_dev(dev, "unhandled ret.Length: 0x%lx\n",
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(unsigned long)obj->Buffer.Length);
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sc->sc_usageid = DALB_ID_INVALID;
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break;
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}
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out:
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ACPI_FREE(ret.Pointer);
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}
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static void
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acpi_dalb_attach(device_t parent, device_t self, void *aux)
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{
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struct acpi_dalb_softc *sc = device_private(self);
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struct acpi_attach_args *aa = aux;
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ACPI_STATUS rv;
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aprint_naive("\n");
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aprint_normal(": Direct Application Launch Button\n");
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sc->sc_node = aa->aa_node;
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sc->sc_dev = self;
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config_interrupts(self, acpi_dalb_init);
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/* Install notify handler */
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rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle,
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ACPI_ALL_NOTIFY, acpi_dalb_notify_handler, self);
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if (ACPI_FAILURE(rv))
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aprint_error_dev(self,
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"couldn't install notify handler: (%s)\n",
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AcpiFormatException(rv));
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sc->sc_smpsw_valid = false;
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acpi_dalb_sysmon_init(sc);
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if (!pmf_device_register(self, NULL, acpi_dalb_resume))
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aprint_error_dev(self, "couldn't establish power handler\n");
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}
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static void
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acpi_dalb_notify_handler(ACPI_HANDLE hdl, UINT32 notify, void *opaque)
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{
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device_t dev = opaque;
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struct acpi_dalb_softc *sc = device_private(dev);
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ACPI_STATUS rv;
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switch (notify) {
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case DALB_SYSTEM_WAKEUP:
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rv = AcpiOsExecute(OSL_NOTIFY_HANDLER,
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acpi_dalb_get_wakeup_hotkeys, dev);
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break;
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case DALB_SYSTEM_RUNTIME:
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rv = AcpiOsExecute(OSL_NOTIFY_HANDLER,
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acpi_dalb_get_runtime_hotkeys, dev);
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break;
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default:
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aprint_error_dev(dev,
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"unknown notification event 0x%x from button 0x%x\n",
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notify, (uint32_t)sc->sc_usageid);
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return;
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}
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if (ACPI_FAILURE(rv))
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aprint_error_dev(dev, "couldn't queue hotkey handler: %s\n",
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AcpiFormatException(rv));
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}
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static void
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acpi_dalb_get_wakeup_hotkeys(void *opaque)
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{
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device_t dev = opaque;
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struct acpi_dalb_softc *sc = device_private(dev);
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if (!sc->sc_smpsw_valid)
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return;
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DPRINTF(("%s: %s: invoking sysmon_pswitch_event\n",
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sc->sc_smpsw.smpsw_name, __func__));
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sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED);
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}
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static void
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acpi_dalb_get_runtime_hotkeys(void *opaque)
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{
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device_t dev = opaque;
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struct acpi_dalb_softc *sc = device_private(dev);
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if (!sc->sc_smpsw_valid)
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return;
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DPRINTF(("%s: %s: invoking sysmon_pswitch_event\n",
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sc->sc_smpsw.smpsw_name, __func__));
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sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED);
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}
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static bool
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acpi_dalb_resume(device_t dev PMF_FN_ARGS)
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{
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struct acpi_dalb_softc *sc = device_private(dev);
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ACPI_STATUS rv;
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ACPI_BUFFER ret;
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ret.Pointer = NULL;
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ret.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
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rv = AcpiEvaluateObject(sc->sc_node->ad_handle, "GHID", NULL, &ret);
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if (ACPI_FAILURE(rv)) {
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aprint_error_dev(dev, "couldn't evaluate GHID: %s\n",
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AcpiFormatException(rv));
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return false;
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}
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if (ret.Pointer)
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ACPI_FREE(ret.Pointer);
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return true;
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}
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