wmi_dell.c revision 1.3
1 /* $NetBSD: wmi_dell.c,v 1.3 2010/04/08 12:14:19 jruoho Exp $ */ 2 3 /*- 4 * Copyright (c) 2009, 2010 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jukka Ruohonen. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: wmi_dell.c,v 1.3 2010/04/08 12:14:19 jruoho Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/device.h> 38 39 #include <dev/acpi/acpireg.h> 40 #include <dev/acpi/acpivar.h> 41 #include <dev/acpi/wmi/wmi_acpivar.h> 42 43 #include <dev/sysmon/sysmonvar.h> 44 45 #define _COMPONENT ACPI_RESOURCE_COMPONENT 46 ACPI_MODULE_NAME ("wmi_dell") 47 48 #define WMI_DELL_HOTKEY_BRIGHTNESS_DOWN 0xE005 49 #define WMI_DELL_HOTKEY_BRIGHTNESS_UP 0xE006 50 #define WMI_DELL_HOTKEY_DISPLAY_CYCLE 0xE00B 51 #define WMI_DELL_HOTKEY_VOLUME_MUTE 0xE020 52 #define WMI_DELL_HOTKEY_VOLUME_DOWN 0xE02E 53 #define WMI_DELL_HOTKEY_VOLUME_UP 0xE030 54 /* WMI_DELL_HOTKEY_UNKNOWN 0xXXXX */ 55 56 #define WMI_DELL_PSW_DISPLAY_CYCLE 0 57 #define WMI_DELL_PSW_COUNT 1 58 59 #define WMI_DELL_GUID_EVENT "9DBB5994-A997-11DA-B012-B622A1EF5492" 60 61 struct wmi_dell_softc { 62 device_t sc_dev; 63 device_t sc_parent; 64 struct sysmon_pswitch sc_smpsw[WMI_DELL_PSW_COUNT]; 65 bool sc_smpsw_valid; 66 }; 67 68 static int wmi_dell_match(device_t, cfdata_t, void *); 69 static void wmi_dell_attach(device_t, device_t, void *); 70 static int wmi_dell_detach(device_t, int); 71 static void wmi_dell_notify_handler(ACPI_HANDLE, uint32_t, void *); 72 static bool wmi_dell_suspend(device_t, const pmf_qual_t *); 73 static bool wmi_dell_resume(device_t, const pmf_qual_t *); 74 75 CFATTACH_DECL_NEW(wmidell, sizeof(struct wmi_dell_softc), 76 wmi_dell_match, wmi_dell_attach, wmi_dell_detach, NULL); 77 78 static int 79 wmi_dell_match(device_t parent, cfdata_t match, void *aux) 80 { 81 return acpi_wmi_guid_match(parent, WMI_DELL_GUID_EVENT); 82 } 83 84 static void 85 wmi_dell_attach(device_t parent, device_t self, void *aux) 86 { 87 struct wmi_dell_softc *sc = device_private(self); 88 ACPI_STATUS rv; 89 int e; 90 91 sc->sc_dev = self; 92 sc->sc_parent = parent; 93 sc->sc_smpsw_valid = true; 94 95 rv = acpi_wmi_event_register(parent, wmi_dell_notify_handler); 96 97 if (ACPI_FAILURE(rv)) { 98 aprint_error(": failed to install WMI notify handler\n"); 99 return; 100 } 101 102 aprint_naive("\n"); 103 aprint_normal(": Dell WMI mappings\n"); 104 105 sc->sc_smpsw[WMI_DELL_PSW_DISPLAY_CYCLE].smpsw_name = 106 PSWITCH_HK_DISPLAY_CYCLE; 107 108 sc->sc_smpsw[WMI_DELL_PSW_DISPLAY_CYCLE].smpsw_type = 109 PSWITCH_TYPE_HOTKEY; 110 111 e = sysmon_pswitch_register(&sc->sc_smpsw[WMI_DELL_PSW_DISPLAY_CYCLE]); 112 113 if (e != 0) 114 sc->sc_smpsw_valid = false; 115 116 (void)pmf_device_register(self, wmi_dell_suspend, wmi_dell_resume); 117 } 118 119 static int 120 wmi_dell_detach(device_t self, int flags) 121 { 122 struct wmi_dell_softc *sc = device_private(self); 123 device_t parent = sc->sc_parent; 124 int i; 125 126 (void)pmf_device_deregister(self); 127 (void)acpi_wmi_event_deregister(parent); 128 129 if (sc->sc_smpsw_valid != true) 130 return 0; 131 132 for (i = 0; i < __arraycount(sc->sc_smpsw); i++) 133 sysmon_pswitch_unregister(&sc->sc_smpsw[i]); 134 135 return 0; 136 } 137 138 static bool 139 wmi_dell_suspend(device_t self, const pmf_qual_t *qual) 140 { 141 struct wmi_dell_softc *sc = device_private(self); 142 device_t parent = sc->sc_parent; 143 144 (void)acpi_wmi_event_deregister(parent); 145 146 return true; 147 } 148 149 static bool 150 wmi_dell_resume(device_t self, const pmf_qual_t *qual) 151 { 152 struct wmi_dell_softc *sc = device_private(self); 153 device_t parent = sc->sc_parent; 154 155 (void)acpi_wmi_event_register(parent, wmi_dell_notify_handler); 156 157 return true; 158 } 159 160 static void 161 wmi_dell_notify_handler(ACPI_HANDLE hdl, uint32_t evt, void *aux) 162 { 163 struct wmi_dell_softc *sc; 164 device_t self = aux; 165 ACPI_OBJECT *obj; 166 ACPI_BUFFER buf; 167 ACPI_STATUS rv; 168 uint32_t val; 169 170 sc = device_private(self); 171 rv = acpi_wmi_event_get(sc->sc_parent, evt, &buf); 172 173 if (ACPI_FAILURE(rv)) 174 goto out; 175 176 obj = buf.Pointer; 177 178 if (obj->Type != ACPI_TYPE_BUFFER) { 179 rv = AE_TYPE; 180 goto out; 181 } 182 183 val = obj->Buffer.Pointer[1] & 0xFFFF; 184 185 switch (val) { 186 187 case WMI_DELL_HOTKEY_BRIGHTNESS_DOWN: 188 pmf_event_inject(NULL, PMFE_DISPLAY_BRIGHTNESS_DOWN); 189 break; 190 191 case WMI_DELL_HOTKEY_BRIGHTNESS_UP: 192 pmf_event_inject(NULL, PMFE_DISPLAY_BRIGHTNESS_UP); 193 break; 194 195 case WMI_DELL_HOTKEY_DISPLAY_CYCLE: 196 197 if (sc->sc_smpsw_valid != true) { 198 rv = AE_ABORT_METHOD; 199 break; 200 } 201 202 sysmon_pswitch_event(&sc->sc_smpsw[WMI_DELL_PSW_DISPLAY_CYCLE], 203 PSWITCH_EVENT_PRESSED); 204 break; 205 206 case WMI_DELL_HOTKEY_VOLUME_MUTE: 207 pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_TOGGLE); 208 break; 209 210 case WMI_DELL_HOTKEY_VOLUME_DOWN: 211 pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_DOWN); 212 break; 213 214 case WMI_DELL_HOTKEY_VOLUME_UP: 215 pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_UP); 216 break; 217 218 default: 219 aprint_debug_dev(sc->sc_dev, 220 "unknown key 0x%02X for event 0x%02X\n", val, evt); 221 break; 222 } 223 224 out: 225 if (buf.Pointer != NULL) 226 ACPI_FREE(buf.Pointer); 227 228 if (ACPI_FAILURE(rv)) 229 aprint_error_dev(sc->sc_dev, "failed to get data for " 230 "event 0x%02X: %s\n", evt, AcpiFormatException(rv)); 231 } 232
Indexes created Tue Sep 23 14:10:03 GMT 2025