dalb_acpi.c revision 1.13
1 /* $NetBSD: dalb_acpi.c,v 1.13 2010/04/14 19:27:28 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 1.13 2010/04/14 19:27:28 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_t, 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); 115 116 if (ACPI_FAILURE(rv) || ret.Pointer == NULL) { 117 aprint_error_dev(dev, 118 "couldn't enable notify handler: (%s)\n", 119 AcpiFormatException(rv)); 120 return; 121 } 122 123 obj = ret.Pointer; 124 125 if (obj->Type != ACPI_TYPE_BUFFER) { 126 sc->sc_usageid = DALB_ID_INVALID; 127 aprint_debug_dev(dev, "invalid ACPI type: %u\n", obj->Type); 128 goto out; 129 } 130 131 switch (obj->Buffer.Length) { 132 case 1: 133 sc->sc_usageid = *(uint8_t *)obj->Buffer.Pointer; 134 break; 135 case 2: 136 sc->sc_usageid = le16toh(*(uint16_t *)obj->Buffer.Pointer); 137 break; 138 case 4: 139 sc->sc_usageid = le32toh(*(uint32_t *)obj->Buffer.Pointer); 140 break; 141 default: 142 aprint_debug_dev(dev, "unhandled ret.Length: 0x%lx\n", 143 (unsigned long)obj->Buffer.Length); 144 sc->sc_usageid = DALB_ID_INVALID; 145 break; 146 } 147 148 out: 149 ACPI_FREE(ret.Pointer); 150 } 151 152 static void 153 acpi_dalb_attach(device_t parent, device_t self, void *aux) 154 { 155 struct acpi_dalb_softc *sc = device_private(self); 156 struct acpi_attach_args *aa = aux; 157 ACPI_STATUS rv; 158 159 aprint_naive("\n"); 160 aprint_normal(": Direct Application Launch Button\n"); 161 162 sc->sc_node = aa->aa_node; 163 sc->sc_dev = self; 164 165 config_interrupts(self, acpi_dalb_init); 166 167 /* Install notify handler */ 168 rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle, 169 ACPI_ALL_NOTIFY, acpi_dalb_notify_handler, self); 170 if (ACPI_FAILURE(rv)) 171 aprint_error_dev(self, 172 "couldn't install notify handler: (%s)\n", 173 AcpiFormatException(rv)); 174 175 sc->sc_smpsw_valid = false; 176 acpi_dalb_sysmon_init(sc); 177 178 if (!pmf_device_register(self, NULL, acpi_dalb_resume)) 179 aprint_error_dev(self, "couldn't establish power handler\n"); 180 } 181 182 static int 183 acpi_dalb_detach(device_t self, int flags) 184 { 185 struct acpi_dalb_softc *sc = device_private(self); 186 ACPI_STATUS rv; 187 188 rv = AcpiRemoveNotifyHandler(sc->sc_node->ad_handle, 189 ACPI_ALL_NOTIFY, acpi_dalb_notify_handler); 190 191 if (ACPI_FAILURE(rv)) 192 return EBUSY; 193 194 pmf_device_deregister(self); 195 sysmon_pswitch_unregister(&sc->sc_smpsw); 196 197 return 0; 198 } 199 200 static void 201 acpi_dalb_notify_handler(ACPI_HANDLE hdl, uint32_t notify, void *opaque) 202 { 203 device_t dev = opaque; 204 struct acpi_dalb_softc *sc = device_private(dev); 205 ACPI_STATUS rv; 206 207 switch (notify) { 208 case DALB_SYSTEM_WAKEUP: 209 rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, 210 acpi_dalb_get_wakeup_hotkeys, dev); 211 break; 212 case DALB_SYSTEM_RUNTIME: 213 rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, 214 acpi_dalb_get_runtime_hotkeys, dev); 215 break; 216 217 default: 218 aprint_error_dev(dev, 219 "unknown notification event 0x%x from button 0x%x\n", 220 notify, (uint32_t)sc->sc_usageid); 221 return; 222 } 223 224 if (ACPI_FAILURE(rv)) 225 aprint_error_dev(dev, "couldn't queue hotkey handler: %s\n", 226 AcpiFormatException(rv)); 227 } 228 229 static void 230 acpi_dalb_get_wakeup_hotkeys(void *opaque) 231 { 232 device_t dev = opaque; 233 struct acpi_dalb_softc *sc = device_private(dev); 234 235 if (!sc->sc_smpsw_valid) 236 return; 237 238 ACPI_DEBUG_PRINT((ACPI_DB_INFO, 239 "%s: %s: invoking sysmon_pswitch_event\n", 240 sc->sc_smpsw.smpsw_name, __func__)); 241 242 sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED); 243 } 244 245 static void 246 acpi_dalb_get_runtime_hotkeys(void *opaque) 247 { 248 device_t dev = opaque; 249 struct acpi_dalb_softc *sc = device_private(dev); 250 251 if (!sc->sc_smpsw_valid) 252 return; 253 254 ACPI_DEBUG_PRINT((ACPI_DB_INFO, 255 "%s: %s: invoking sysmon_pswitch_event\n", 256 sc->sc_smpsw.smpsw_name, __func__)); 257 258 sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED); 259 } 260 261 static bool 262 acpi_dalb_resume(device_t dev, const pmf_qual_t *qual) 263 { 264 struct acpi_dalb_softc *sc = device_private(dev); 265 ACPI_STATUS rv; 266 ACPI_BUFFER ret; 267 268 rv = acpi_eval_struct(sc->sc_node->ad_handle, "GHID", &ret); 269 if (ACPI_FAILURE(rv)) { 270 aprint_error_dev(dev, "couldn't evaluate GHID: %s\n", 271 AcpiFormatException(rv)); 272 return false; 273 } 274 if (ret.Pointer) 275 ACPI_FREE(ret.Pointer); 276 277 return true; 278 } 279
Indexes created Wed Sep 24 02:09:48 GMT 2025