271 lines
6.7 KiB
C
271 lines
6.7 KiB
C
/* $NetBSD: wmi_dell.c,v 1.8 2011/02/16 13:15:49 jruoho Exp $ */
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/*-
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* Copyright (c) 2009, 2010 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jukka Ruohonen.
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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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*
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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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: wmi_dell.c,v 1.8 2011/02/16 13:15:49 jruoho Exp $");
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#include <sys/param.h>
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#include <sys/device.h>
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#include <sys/module.h>
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#include <dev/acpi/acpireg.h>
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#include <dev/acpi/acpivar.h>
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#include <dev/acpi/wmi/wmi_acpivar.h>
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#include <dev/sysmon/sysmonvar.h>
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#define _COMPONENT ACPI_RESOURCE_COMPONENT
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ACPI_MODULE_NAME ("wmi_dell")
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#define WMI_DELL_HOTKEY_BRIGHTNESS_DOWN 0xE005
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#define WMI_DELL_HOTKEY_BRIGHTNESS_UP 0xE006
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#define WMI_DELL_HOTKEY_DISPLAY_CYCLE 0xE00B
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#define WMI_DELL_HOTKEY_VOLUME_MUTE 0xE020
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#define WMI_DELL_HOTKEY_VOLUME_DOWN 0xE02E
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#define WMI_DELL_HOTKEY_VOLUME_UP 0xE030
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/* WMI_DELL_HOTKEY_UNKNOWN 0xXXXX */
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#define WMI_DELL_PSW_DISPLAY_CYCLE 0
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#define WMI_DELL_PSW_COUNT 1
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#define WMI_DELL_GUID_EVENT "9DBB5994-A997-11DA-B012-B622A1EF5492"
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struct wmi_dell_softc {
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device_t sc_dev;
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device_t sc_parent;
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struct sysmon_pswitch sc_smpsw[WMI_DELL_PSW_COUNT];
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bool sc_smpsw_valid;
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};
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static int wmi_dell_match(device_t, cfdata_t, void *);
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static void wmi_dell_attach(device_t, device_t, void *);
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static int wmi_dell_detach(device_t, int);
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static void wmi_dell_notify_handler(ACPI_HANDLE, uint32_t, void *);
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static bool wmi_dell_suspend(device_t, const pmf_qual_t *);
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static bool wmi_dell_resume(device_t, const pmf_qual_t *);
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CFATTACH_DECL_NEW(wmidell, sizeof(struct wmi_dell_softc),
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wmi_dell_match, wmi_dell_attach, wmi_dell_detach, NULL);
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static int
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wmi_dell_match(device_t parent, cfdata_t match, void *aux)
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{
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return acpi_wmi_guid_match(parent, WMI_DELL_GUID_EVENT);
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}
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static void
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wmi_dell_attach(device_t parent, device_t self, void *aux)
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{
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struct wmi_dell_softc *sc = device_private(self);
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ACPI_STATUS rv;
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int e;
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sc->sc_dev = self;
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sc->sc_parent = parent;
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sc->sc_smpsw_valid = true;
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rv = acpi_wmi_event_register(parent, wmi_dell_notify_handler);
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if (ACPI_FAILURE(rv)) {
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aprint_error(": failed to install WMI notify handler\n");
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return;
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}
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aprint_naive("\n");
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aprint_normal(": Dell WMI mappings\n");
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sc->sc_smpsw[WMI_DELL_PSW_DISPLAY_CYCLE].smpsw_name =
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PSWITCH_HK_DISPLAY_CYCLE;
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sc->sc_smpsw[WMI_DELL_PSW_DISPLAY_CYCLE].smpsw_type =
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PSWITCH_TYPE_HOTKEY;
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e = sysmon_pswitch_register(&sc->sc_smpsw[WMI_DELL_PSW_DISPLAY_CYCLE]);
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if (e != 0)
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sc->sc_smpsw_valid = false;
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(void)pmf_device_register(self, wmi_dell_suspend, wmi_dell_resume);
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}
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static int
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wmi_dell_detach(device_t self, int flags)
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{
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struct wmi_dell_softc *sc = device_private(self);
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device_t parent = sc->sc_parent;
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size_t i;
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(void)pmf_device_deregister(self);
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(void)acpi_wmi_event_deregister(parent);
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if (sc->sc_smpsw_valid != true)
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return 0;
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for (i = 0; i < __arraycount(sc->sc_smpsw); i++)
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sysmon_pswitch_unregister(&sc->sc_smpsw[i]);
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return 0;
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}
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static bool
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wmi_dell_suspend(device_t self, const pmf_qual_t *qual)
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{
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struct wmi_dell_softc *sc = device_private(self);
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device_t parent = sc->sc_parent;
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(void)acpi_wmi_event_deregister(parent);
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return true;
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}
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static bool
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wmi_dell_resume(device_t self, const pmf_qual_t *qual)
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{
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struct wmi_dell_softc *sc = device_private(self);
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device_t parent = sc->sc_parent;
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(void)acpi_wmi_event_register(parent, wmi_dell_notify_handler);
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return true;
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}
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static void
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wmi_dell_notify_handler(ACPI_HANDLE hdl, uint32_t evt, void *aux)
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{
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struct wmi_dell_softc *sc;
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device_t self = aux;
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ACPI_OBJECT *obj;
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ACPI_BUFFER buf;
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ACPI_STATUS rv;
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uint32_t val;
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buf.Pointer = NULL;
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sc = device_private(self);
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rv = acpi_wmi_event_get(sc->sc_parent, evt, &buf);
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if (ACPI_FAILURE(rv))
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goto out;
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obj = buf.Pointer;
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if (obj->Type != ACPI_TYPE_BUFFER) {
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rv = AE_TYPE;
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goto out;
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}
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val = obj->Buffer.Pointer[1] & 0xFFFF;
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switch (val) {
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case WMI_DELL_HOTKEY_BRIGHTNESS_DOWN:
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pmf_event_inject(NULL, PMFE_DISPLAY_BRIGHTNESS_DOWN);
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break;
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case WMI_DELL_HOTKEY_BRIGHTNESS_UP:
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pmf_event_inject(NULL, PMFE_DISPLAY_BRIGHTNESS_UP);
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break;
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case WMI_DELL_HOTKEY_DISPLAY_CYCLE:
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if (sc->sc_smpsw_valid != true) {
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rv = AE_ABORT_METHOD;
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break;
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}
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sysmon_pswitch_event(&sc->sc_smpsw[WMI_DELL_PSW_DISPLAY_CYCLE],
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PSWITCH_EVENT_PRESSED);
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break;
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case WMI_DELL_HOTKEY_VOLUME_MUTE:
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pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_TOGGLE);
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break;
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case WMI_DELL_HOTKEY_VOLUME_DOWN:
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pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_DOWN);
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break;
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case WMI_DELL_HOTKEY_VOLUME_UP:
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pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_UP);
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break;
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default:
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aprint_debug_dev(sc->sc_dev,
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"unknown key 0x%02X for event 0x%02X\n", val, evt);
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break;
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}
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out:
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if (buf.Pointer != NULL)
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ACPI_FREE(buf.Pointer);
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if (ACPI_FAILURE(rv))
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aprint_error_dev(sc->sc_dev, "failed to get data for "
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"event 0x%02X: %s\n", evt, AcpiFormatException(rv));
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}
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MODULE(MODULE_CLASS_DRIVER, wmidell, "acpiwmi");
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#ifdef _MODULE
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#include "ioconf.c"
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#endif
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static int
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wmidell_modcmd(modcmd_t cmd, void *aux)
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{
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int rv = 0;
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switch (cmd) {
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case MODULE_CMD_INIT:
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#ifdef _MODULE
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rv = config_init_component(cfdriver_ioconf_wmidell,
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cfattach_ioconf_wmidell, cfdata_ioconf_wmidell);
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#endif
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break;
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case MODULE_CMD_FINI:
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#ifdef _MODULE
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rv = config_fini_component(cfdriver_ioconf_wmidell,
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cfattach_ioconf_wmidell, cfdata_ioconf_wmidell);
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#endif
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break;
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default:
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rv = ENOTTY;
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}
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return rv;
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}
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