dalb_acpi.c revision 1.11
1 /* $NetBSD: dalb_acpi.c,v 1.11 2010/04/09 15:45:59 jruoho Exp $ */ 2 3 /*- 4 * Copyright (c) 2008 Christoph Egger <cegger (at) netbsd.org> 5 * Copyright (c) 2008 Jared D. McNeill <jmcneill (at) netbsd.org> 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 18 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 19 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 20 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 21 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 22 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 23 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 25 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 26 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 27 * POSSIBILITY OF SUCH DAMAGE. 28 */ 29 #include <sys/cdefs.h> 30 __KERNEL_RCSID(0, "$NetBSD: dalb_acpi.c,v 1.11 2010/04/09 15:45:59 jruoho Exp $"); 31 32 /* 33 * Direct Application Launch Button: 34 * http://www.microsoft.com/whdc/system/vista/DirAppLaunch.mspx 35 */ 36 37 #include <sys/param.h> 38 #include <sys/device.h> 39 #include <sys/systm.h> 40 41 #include <dev/acpi/acpireg.h> 42 #include <dev/acpi/acpivar.h> 43 44 #define _COMPONENT ACPI_RESOURCE_COMPONENT 45 ACPI_MODULE_NAME ("dalb_acpi") 46 47 #define DALB_ID_INVALID -1 48 49 struct acpi_dalb_softc { 50 device_t sc_dev; 51 struct acpi_devnode *sc_node; 52 53 ACPI_INTEGER sc_usageid; 54 55 /* There's one PNP0C32 ACPI device for each button. 56 * Therefore, one instance is enough. */ 57 struct sysmon_pswitch sc_smpsw; 58 bool sc_smpsw_valid; 59 }; 60 61 static int acpi_dalb_match(device_t, cfdata_t, void *); 62 static void acpi_dalb_attach(device_t, device_t, void *); 63 static int acpi_dalb_detach(device_t, int); 64 static void acpi_dalb_notify_handler(ACPI_HANDLE, UINT32, void *); 65 static bool acpi_dalb_resume(device_t, const pmf_qual_t *); 66 67 static void acpi_dalb_get_wakeup_hotkeys(void *opaque); 68 static void acpi_dalb_get_runtime_hotkeys(void *opaque); 69 70 CFATTACH_DECL_NEW(acpidalb, sizeof(struct acpi_dalb_softc), 71 acpi_dalb_match, acpi_dalb_attach, acpi_dalb_detach, NULL); 72 73 static const char * const acpi_dalb_ids[] = { 74 "PNP0C32", /* Direct Application Launch Button */ 75 NULL 76 }; 77 78 #define DALB_SYSTEM_WAKEUP 0x02 79 #define DALB_SYSTEM_RUNTIME 0x80 80 81 static int 82 acpi_dalb_match(device_t parent, cfdata_t match, void *aux) 83 { 84 struct acpi_attach_args *aa = aux; 85 86 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 87 return 0; 88 89 return acpi_match_hid(aa->aa_node->ad_devinfo, acpi_dalb_ids); 90 } 91 92 static void 93 acpi_dalb_sysmon_init(struct acpi_dalb_softc *sc) 94 { 95 sc->sc_smpsw_valid = true; 96 sc->sc_smpsw.smpsw_name = device_xname(sc->sc_dev); 97 sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_HOTKEY; 98 if (sysmon_pswitch_register(&sc->sc_smpsw)) { 99 aprint_error_dev(sc->sc_dev, 100 "couldn't register sleep with sysmon\n"); 101 sc->sc_smpsw_valid = false; 102 } 103 } 104 105 106 static void 107 acpi_dalb_init(device_t dev) 108 { 109 struct acpi_dalb_softc *sc = device_private(dev); 110 ACPI_OBJECT *obj; 111 ACPI_STATUS rv; 112 ACPI_BUFFER ret; 113 114 rv = acpi_eval_struct(sc->sc_node->ad_handle, "GHID", &ret); 115 if (ACPI_FAILURE(rv) || ret.Pointer == NULL) { 116 aprint_error_dev(dev, 117 "couldn't enable notify handler: (%s)\n", 118 AcpiFormatException(rv)); 119 return; 120 } 121 122 obj = (ACPI_OBJECT *)ret.Pointer; 123 if (obj->Type != ACPI_TYPE_BUFFER) { 124 sc->sc_usageid = DALB_ID_INVALID; 125 aprint_debug_dev(dev, "invalid ACPI type: %u\n", obj->Type); 126 goto out; 127 } 128 129 switch (obj->Buffer.Length) { 130 case 1: 131 sc->sc_usageid = *(uint8_t *)obj->Buffer.Pointer; 132 break; 133 case 2: 134 sc->sc_usageid = le16toh(*(uint16_t *)obj->Buffer.Pointer); 135 break; 136 case 4: 137 sc->sc_usageid = le32toh(*(uint32_t *)obj->Buffer.Pointer); 138 break; 139 default: 140 aprint_debug_dev(dev, "unhandled ret.Length: 0x%lx\n", 141 (unsigned long)obj->Buffer.Length); 142 sc->sc_usageid = DALB_ID_INVALID; 143 break; 144 } 145 146 out: 147 ACPI_FREE(ret.Pointer); 148 } 149 150 static void 151 acpi_dalb_attach(device_t parent, device_t self, void *aux) 152 { 153 struct acpi_dalb_softc *sc = device_private(self); 154 struct acpi_attach_args *aa = aux; 155 ACPI_STATUS rv; 156 157 aprint_naive("\n"); 158 aprint_normal(": Direct Application Launch Button\n"); 159 160 sc->sc_node = aa->aa_node; 161 sc->sc_dev = self; 162 163 config_interrupts(self, acpi_dalb_init); 164 165 /* Install notify handler */ 166 rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle, 167 ACPI_ALL_NOTIFY, acpi_dalb_notify_handler, self); 168 if (ACPI_FAILURE(rv)) 169 aprint_error_dev(self, 170 "couldn't install notify handler: (%s)\n", 171 AcpiFormatException(rv)); 172 173 sc->sc_smpsw_valid = false; 174 acpi_dalb_sysmon_init(sc); 175 176 if (!pmf_device_register(self, NULL, acpi_dalb_resume)) 177 aprint_error_dev(self, "couldn't establish power handler\n"); 178 } 179 180 static int 181 acpi_dalb_detach(device_t self, int flags) 182 { 183 struct acpi_dalb_softc *sc = device_private(self); 184 ACPI_STATUS rv; 185 186 rv = AcpiRemoveNotifyHandler(sc->sc_node->ad_handle, 187 ACPI_ALL_NOTIFY, acpi_dalb_notify_handler); 188 189 if (ACPI_FAILURE(rv)) 190 return EBUSY; 191 192 pmf_device_deregister(self); 193 sysmon_pswitch_unregister(&sc->sc_smpsw); 194 195 return 0; 196 } 197 198 static void 199 acpi_dalb_notify_handler(ACPI_HANDLE hdl, UINT32 notify, void *opaque) 200 { 201 device_t dev = opaque; 202 struct acpi_dalb_softc *sc = device_private(dev); 203 ACPI_STATUS rv; 204 205 switch (notify) { 206 case DALB_SYSTEM_WAKEUP: 207 rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, 208 acpi_dalb_get_wakeup_hotkeys, dev); 209 break; 210 case DALB_SYSTEM_RUNTIME: 211 rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, 212 acpi_dalb_get_runtime_hotkeys, dev); 213 break; 214 215 default: 216 aprint_error_dev(dev, 217 "unknown notification event 0x%x from button 0x%x\n", 218 notify, (uint32_t)sc->sc_usageid); 219 return; 220 } 221 222 if (ACPI_FAILURE(rv)) 223 aprint_error_dev(dev, "couldn't queue hotkey handler: %s\n", 224 AcpiFormatException(rv)); 225 } 226 227 static void 228 acpi_dalb_get_wakeup_hotkeys(void *opaque) 229 { 230 device_t dev = opaque; 231 struct acpi_dalb_softc *sc = device_private(dev); 232 233 if (!sc->sc_smpsw_valid) 234 return; 235 236 ACPI_DEBUG_PRINT((ACPI_DB_INFO, 237 "%s: %s: invoking sysmon_pswitch_event\n", 238 sc->sc_smpsw.smpsw_name, __func__)); 239 240 sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED); 241 } 242 243 static void 244 acpi_dalb_get_runtime_hotkeys(void *opaque) 245 { 246 device_t dev = opaque; 247 struct acpi_dalb_softc *sc = device_private(dev); 248 249 if (!sc->sc_smpsw_valid) 250 return; 251 252 ACPI_DEBUG_PRINT((ACPI_DB_INFO, 253 "%s: %s: invoking sysmon_pswitch_event\n", 254 sc->sc_smpsw.smpsw_name, __func__)); 255 256 sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED); 257 } 258 259 static bool 260 acpi_dalb_resume(device_t dev, const pmf_qual_t *qual) 261 { 262 struct acpi_dalb_softc *sc = device_private(dev); 263 ACPI_STATUS rv; 264 ACPI_BUFFER ret; 265 266 rv = acpi_eval_struct(sc->sc_node->ad_handle, "GHID", &ret); 267 if (ACPI_FAILURE(rv)) { 268 aprint_error_dev(dev, "couldn't evaluate GHID: %s\n", 269 AcpiFormatException(rv)); 270 return false; 271 } 272 if (ret.Pointer) 273 ACPI_FREE(ret.Pointer); 274 275 return true; 276 } 277
Indexes created Tue Sep 23 23:09:58 GMT 2025