dalb_acpi.c revision 1.3
1 /* $NetBSD: dalb_acpi.c,v 1.3 2009/09/16 10:47:55 mlelstv 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 1.3 2009/09/16 10:47:55 mlelstv 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/systm.h> 39 #include <sys/device.h> 40 #include <sys/proc.h> 41 #include <sys/kernel.h> 42 #include <sys/callout.h> 43 #include <sys/sysctl.h> 44 45 #include <machine/bus.h> 46 47 #include <dev/acpi/acpica.h> 48 #include <dev/acpi/acpivar.h> 49 #include <dev/acpi/acpireg.h> 50 51 #define _COMPONENT ACPI_RESOURCE_COMPONENT 52 ACPI_MODULE_NAME ("dalb_acpi") 53 54 #define DALB_ID_INVALID -1 55 56 struct acpi_dalb_softc { 57 device_t sc_dev; 58 struct acpi_devnode *sc_node; 59 struct sysctllog *sc_log; 60 61 ACPI_INTEGER sc_usageid; 62 63 /* There's one PNP0C32 ACPI device for each button. 64 * Therefore, one instance is enough. */ 65 struct sysmon_pswitch sc_smpsw; 66 bool sc_smpsw_valid; 67 }; 68 69 static int acpi_dalb_match(device_t, cfdata_t, void *); 70 static void acpi_dalb_attach(device_t, device_t, void *); 71 static void acpi_dalb_notify_handler(ACPI_HANDLE, UINT32, void *); 72 static bool acpi_dalb_resume(device_t PMF_FN_PROTO); 73 74 static void acpi_dalb_get_wakeup_hotkeys(void *opaque); 75 static void acpi_dalb_get_runtime_hotkeys(void *opaque); 76 77 CFATTACH_DECL_NEW(acpidalb, sizeof(struct acpi_dalb_softc), 78 acpi_dalb_match, acpi_dalb_attach, NULL, NULL); 79 80 static const char * const acpi_dalb_ids[] = { 81 "PNP0C32", /* Direct Application Launch Button */ 82 NULL 83 }; 84 85 #ifdef DEBUG 86 #define DPRINTF(x) printf x 87 #else 88 #define DPRINTF(x) 89 #endif 90 91 #define DALB_SYSTEM_WAKEUP 0x02 92 #define DALB_SYSTEM_RUNTIME 0x80 93 94 static int 95 acpi_dalb_match(device_t parent, cfdata_t match, void *aux) 96 { 97 struct acpi_attach_args *aa = aux; 98 99 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 100 return 0; 101 102 return acpi_match_hid(aa->aa_node->ad_devinfo, acpi_dalb_ids); 103 } 104 105 static void 106 acpi_dalb_sysmon_init(struct acpi_dalb_softc *sc) 107 { 108 sc->sc_smpsw_valid = true; 109 sc->sc_smpsw.smpsw_name = device_xname(sc->sc_dev); 110 sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_HOTKEY; 111 if (sysmon_pswitch_register(&sc->sc_smpsw)) { 112 aprint_error_dev(sc->sc_dev, 113 "couldn't register sleep with sysmon\n"); 114 sc->sc_smpsw_valid = false; 115 } 116 } 117 118 119 static void 120 acpi_dalb_init(device_t dev) 121 { 122 struct acpi_dalb_softc *sc = device_private(dev); 123 ACPI_OBJECT *obj; 124 ACPI_STATUS rv; 125 ACPI_BUFFER ret; 126 127 ret.Pointer = NULL; 128 ret.Length = ACPI_ALLOCATE_LOCAL_BUFFER; 129 130 rv = AcpiEvaluateObject(sc->sc_node->ad_handle, "GHID", NULL, &ret); 131 if (ACPI_FAILURE(rv) || ret.Pointer == NULL) { 132 aprint_error_dev(dev, 133 "couldn't enable notify handler: (%s)\n", 134 AcpiFormatException(rv)); 135 return; 136 } 137 138 obj = (ACPI_OBJECT *)ret.Pointer; 139 if (obj->Type != ACPI_TYPE_BUFFER) { 140 sc->sc_usageid = DALB_ID_INVALID; 141 aprint_debug_dev(dev, "invalid ACPI type: %d\n", obj->Type); 142 goto out; 143 } 144 145 switch (obj->Buffer.Length) { 146 case 1: 147 sc->sc_usageid = *(uint8_t *)obj->Buffer.Pointer; 148 break; 149 case 2: 150 sc->sc_usageid = le16toh(*(uint16_t *)obj->Buffer.Pointer); 151 break; 152 case 4: 153 sc->sc_usageid = le32toh(*(uint32_t *)obj->Buffer.Pointer); 154 break; 155 default: 156 aprint_debug_dev(dev, "unhandled ret.Length: 0x%lx\n", 157 (unsigned long)obj->Buffer.Length); 158 sc->sc_usageid = DALB_ID_INVALID; 159 break; 160 } 161 162 out: 163 ACPI_FREE(ret.Pointer); 164 } 165 166 static void 167 acpi_dalb_attach(device_t parent, device_t self, void *aux) 168 { 169 struct acpi_dalb_softc *sc = device_private(self); 170 struct acpi_attach_args *aa = aux; 171 ACPI_STATUS rv; 172 173 aprint_naive("\n"); 174 aprint_normal(": Direct Application Launch Button\n"); 175 176 sc->sc_node = aa->aa_node; 177 sc->sc_dev = self; 178 179 config_interrupts(self, acpi_dalb_init); 180 181 /* Install notify handler */ 182 rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle, 183 ACPI_ALL_NOTIFY, acpi_dalb_notify_handler, self); 184 if (ACPI_FAILURE(rv)) 185 aprint_error_dev(self, 186 "couldn't install notify handler: (%s)\n", 187 AcpiFormatException(rv)); 188 189 sc->sc_smpsw_valid = false; 190 acpi_dalb_sysmon_init(sc); 191 192 if (!pmf_device_register(self, NULL, acpi_dalb_resume)) 193 aprint_error_dev(self, "couldn't establish power handler\n"); 194 } 195 196 static void 197 acpi_dalb_notify_handler(ACPI_HANDLE hdl, UINT32 notify, void *opaque) 198 { 199 device_t dev = opaque; 200 struct acpi_dalb_softc *sc = device_private(dev); 201 ACPI_STATUS rv; 202 203 switch (notify) { 204 case DALB_SYSTEM_WAKEUP: 205 rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, 206 acpi_dalb_get_wakeup_hotkeys, dev); 207 break; 208 case DALB_SYSTEM_RUNTIME: 209 rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, 210 acpi_dalb_get_runtime_hotkeys, dev); 211 break; 212 213 default: 214 aprint_error_dev(dev, 215 "unknown notification event 0x%x from button 0x%x\n", 216 notify, (uint32_t)sc->sc_usageid); 217 return; 218 } 219 220 if (ACPI_FAILURE(rv)) 221 aprint_error_dev(dev, "couldn't queue hotkey handler: %s\n", 222 AcpiFormatException(rv)); 223 } 224 225 static void 226 acpi_dalb_get_wakeup_hotkeys(void *opaque) 227 { 228 device_t dev = opaque; 229 struct acpi_dalb_softc *sc = device_private(dev); 230 231 if (!sc->sc_smpsw_valid) 232 return; 233 DPRINTF(("%s: %s: invoking sysmon_pswitch_event\n", 234 sc->sc_smpsw.smpsw_name, __func__)); 235 sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED); 236 } 237 238 static void 239 acpi_dalb_get_runtime_hotkeys(void *opaque) 240 { 241 device_t dev = opaque; 242 struct acpi_dalb_softc *sc = device_private(dev); 243 244 if (!sc->sc_smpsw_valid) 245 return; 246 DPRINTF(("%s: %s: invoking sysmon_pswitch_event\n", 247 sc->sc_smpsw.smpsw_name, __func__)); 248 sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED); 249 } 250 251 static bool 252 acpi_dalb_resume(device_t dev PMF_FN_ARGS) 253 { 254 struct acpi_dalb_softc *sc = device_private(dev); 255 ACPI_STATUS rv; 256 ACPI_BUFFER ret; 257 258 ret.Pointer = NULL; 259 ret.Length = ACPI_ALLOCATE_LOCAL_BUFFER; 260 261 rv = AcpiEvaluateObject(sc->sc_node->ad_handle, "GHID", NULL, &ret); 262 if (ACPI_FAILURE(rv)) { 263 aprint_error_dev(dev, "couldn't evaluate GHID: %s\n", 264 AcpiFormatException(rv)); 265 return false; 266 } 267 if (ret.Pointer) 268 ACPI_FREE(ret.Pointer); 269 270 return true; 271 } 272
Indexes created Tue Sep 23 14:10:03 GMT 2025