dalb_acpi.c revision 1.4
1 /* $NetBSD: dalb_acpi.c,v 1.4 2010/01/05 13:39:49 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 1.4 2010/01/05 13:39:49 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/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 rv = acpi_eval_struct(sc->sc_node->ad_handle, "GHID", &ret); 128 if (ACPI_FAILURE(rv) || ret.Pointer == NULL) { 129 aprint_error_dev(dev, 130 "couldn't enable notify handler: (%s)\n", 131 AcpiFormatException(rv)); 132 return; 133 } 134 135 obj = (ACPI_OBJECT *)ret.Pointer; 136 if (obj->Type != ACPI_TYPE_BUFFER) { 137 sc->sc_usageid = DALB_ID_INVALID; 138 aprint_debug_dev(dev, "invalid ACPI type: %d\n", obj->Type); 139 goto out; 140 } 141 142 switch (obj->Buffer.Length) { 143 case 1: 144 sc->sc_usageid = *(uint8_t *)obj->Buffer.Pointer; 145 break; 146 case 2: 147 sc->sc_usageid = le16toh(*(uint16_t *)obj->Buffer.Pointer); 148 break; 149 case 4: 150 sc->sc_usageid = le32toh(*(uint32_t *)obj->Buffer.Pointer); 151 break; 152 default: 153 aprint_debug_dev(dev, "unhandled ret.Length: 0x%lx\n", 154 (unsigned long)obj->Buffer.Length); 155 sc->sc_usageid = DALB_ID_INVALID; 156 break; 157 } 158 159 out: 160 ACPI_FREE(ret.Pointer); 161 } 162 163 static void 164 acpi_dalb_attach(device_t parent, device_t self, void *aux) 165 { 166 struct acpi_dalb_softc *sc = device_private(self); 167 struct acpi_attach_args *aa = aux; 168 ACPI_STATUS rv; 169 170 aprint_naive("\n"); 171 aprint_normal(": Direct Application Launch Button\n"); 172 173 sc->sc_node = aa->aa_node; 174 sc->sc_dev = self; 175 176 config_interrupts(self, acpi_dalb_init); 177 178 /* Install notify handler */ 179 rv = AcpiInstallNotifyHandler(sc->sc_node->ad_handle, 180 ACPI_ALL_NOTIFY, acpi_dalb_notify_handler, self); 181 if (ACPI_FAILURE(rv)) 182 aprint_error_dev(self, 183 "couldn't install notify handler: (%s)\n", 184 AcpiFormatException(rv)); 185 186 sc->sc_smpsw_valid = false; 187 acpi_dalb_sysmon_init(sc); 188 189 if (!pmf_device_register(self, NULL, acpi_dalb_resume)) 190 aprint_error_dev(self, "couldn't establish power handler\n"); 191 } 192 193 static void 194 acpi_dalb_notify_handler(ACPI_HANDLE hdl, UINT32 notify, void *opaque) 195 { 196 device_t dev = opaque; 197 struct acpi_dalb_softc *sc = device_private(dev); 198 ACPI_STATUS rv; 199 200 switch (notify) { 201 case DALB_SYSTEM_WAKEUP: 202 rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, 203 acpi_dalb_get_wakeup_hotkeys, dev); 204 break; 205 case DALB_SYSTEM_RUNTIME: 206 rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, 207 acpi_dalb_get_runtime_hotkeys, dev); 208 break; 209 210 default: 211 aprint_error_dev(dev, 212 "unknown notification event 0x%x from button 0x%x\n", 213 notify, (uint32_t)sc->sc_usageid); 214 return; 215 } 216 217 if (ACPI_FAILURE(rv)) 218 aprint_error_dev(dev, "couldn't queue hotkey handler: %s\n", 219 AcpiFormatException(rv)); 220 } 221 222 static void 223 acpi_dalb_get_wakeup_hotkeys(void *opaque) 224 { 225 device_t dev = opaque; 226 struct acpi_dalb_softc *sc = device_private(dev); 227 228 if (!sc->sc_smpsw_valid) 229 return; 230 DPRINTF(("%s: %s: invoking sysmon_pswitch_event\n", 231 sc->sc_smpsw.smpsw_name, __func__)); 232 sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED); 233 } 234 235 static void 236 acpi_dalb_get_runtime_hotkeys(void *opaque) 237 { 238 device_t dev = opaque; 239 struct acpi_dalb_softc *sc = device_private(dev); 240 241 if (!sc->sc_smpsw_valid) 242 return; 243 DPRINTF(("%s: %s: invoking sysmon_pswitch_event\n", 244 sc->sc_smpsw.smpsw_name, __func__)); 245 sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED); 246 } 247 248 static bool 249 acpi_dalb_resume(device_t dev PMF_FN_ARGS) 250 { 251 struct acpi_dalb_softc *sc = device_private(dev); 252 ACPI_STATUS rv; 253 ACPI_BUFFER ret; 254 255 rv = acpi_eval_struct(sc->sc_node->ad_handle, "GHID", &ret); 256 if (ACPI_FAILURE(rv)) { 257 aprint_error_dev(dev, "couldn't evaluate GHID: %s\n", 258 AcpiFormatException(rv)); 259 return false; 260 } 261 if (ret.Pointer) 262 ACPI_FREE(ret.Pointer); 263 264 return true; 265 } 266
Indexes created Tue Sep 23 07:09:52 GMT 2025