| 1 | /* $NetBSD: dalb_acpi.c,v 1.18 2015/04/23 23:23:00 pgoyette Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2008 Christoph Egger <cegger@netbsd.org> |
| 5 | * Copyright (c) 2008 Jared D. McNeill <jmcneill@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 1.18 2015/04/23 23:23:00 pgoyette 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/module.h> |
| 40 | #include <sys/systm.h> |
| 41 | |
| 42 | #include <dev/acpi/acpireg.h> |
| 43 | #include <dev/acpi/acpivar.h> |
| 44 | |
| 45 | #define _COMPONENT ACPI_RESOURCE_COMPONENT |
| 46 | ACPI_MODULE_NAME ("dalb_acpi" ) |
| 47 | |
| 48 | #define DALB_ID_INVALID -1 |
| 49 | |
| 50 | struct acpi_dalb_softc { |
| 51 | device_t sc_dev; |
| 52 | struct acpi_devnode *sc_node; |
| 53 | |
| 54 | ACPI_INTEGER sc_usageid; |
| 55 | |
| 56 | /* There's one PNP0C32 ACPI device for each button. |
| 57 | * Therefore, one instance is enough. */ |
| 58 | struct sysmon_pswitch sc_smpsw; |
| 59 | bool sc_smpsw_valid; |
| 60 | }; |
| 61 | |
| 62 | static int acpi_dalb_match(device_t, cfdata_t, void *); |
| 63 | static void acpi_dalb_attach(device_t, device_t, void *); |
| 64 | static int acpi_dalb_detach(device_t, int); |
| 65 | static void acpi_dalb_notify_handler(ACPI_HANDLE, uint32_t, void *); |
| 66 | static bool acpi_dalb_resume(device_t, const pmf_qual_t *); |
| 67 | |
| 68 | static void acpi_dalb_get_wakeup_hotkeys(void *opaque); |
| 69 | static void acpi_dalb_get_runtime_hotkeys(void *opaque); |
| 70 | |
| 71 | CFATTACH_DECL_NEW(acpidalb, sizeof(struct acpi_dalb_softc), |
| 72 | acpi_dalb_match, acpi_dalb_attach, acpi_dalb_detach, NULL); |
| 73 | |
| 74 | static const char * const acpi_dalb_ids[] = { |
| 75 | "PNP0C32" , /* Direct Application Launch Button */ |
| 76 | NULL |
| 77 | }; |
| 78 | |
| 79 | #define DALB_SYSTEM_WAKEUP 0x02 |
| 80 | #define DALB_SYSTEM_RUNTIME 0x80 |
| 81 | |
| 82 | static int |
| 83 | acpi_dalb_match(device_t parent, cfdata_t match, void *aux) |
| 84 | { |
| 85 | struct acpi_attach_args *aa = aux; |
| 86 | |
| 87 | if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) |
| 88 | return 0; |
| 89 | |
| 90 | return acpi_match_hid(aa->aa_node->ad_devinfo, acpi_dalb_ids); |
| 91 | } |
| 92 | |
| 93 | static void |
| 94 | acpi_dalb_sysmon_init(struct acpi_dalb_softc *sc) |
| 95 | { |
| 96 | sc->sc_smpsw_valid = true; |
| 97 | sc->sc_smpsw.smpsw_name = device_xname(sc->sc_dev); |
| 98 | sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_HOTKEY; |
| 99 | if (sysmon_pswitch_register(&sc->sc_smpsw)) { |
| 100 | aprint_error_dev(sc->sc_dev, |
| 101 | "couldn't register sleep with sysmon\n" ); |
| 102 | sc->sc_smpsw_valid = false; |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | |
| 107 | static void |
| 108 | acpi_dalb_init(device_t dev) |
| 109 | { |
| 110 | struct acpi_dalb_softc *sc = device_private(dev); |
| 111 | ACPI_OBJECT *obj; |
| 112 | ACPI_STATUS rv; |
| 113 | ACPI_BUFFER ret; |
| 114 | |
| 115 | rv = acpi_eval_struct(sc->sc_node->ad_handle, "GHID" , &ret); |
| 116 | |
| 117 | if (ACPI_FAILURE(rv) || ret.Pointer == NULL) { |
| 118 | aprint_error_dev(dev, |
| 119 | "couldn't enable notify handler: (%s)\n" , |
| 120 | AcpiFormatException(rv)); |
| 121 | return; |
| 122 | } |
| 123 | |
| 124 | obj = ret.Pointer; |
| 125 | |
| 126 | if (obj->Type != ACPI_TYPE_BUFFER) { |
| 127 | sc->sc_usageid = DALB_ID_INVALID; |
| 128 | aprint_debug_dev(dev, "invalid ACPI type: %u\n" , obj->Type); |
| 129 | goto out; |
| 130 | } |
| 131 | |
| 132 | switch (obj->Buffer.Length) { |
| 133 | case 1: |
| 134 | sc->sc_usageid = *(uint8_t *)obj->Buffer.Pointer; |
| 135 | break; |
| 136 | case 2: |
| 137 | sc->sc_usageid = le16toh(*(uint16_t *)obj->Buffer.Pointer); |
| 138 | break; |
| 139 | case 4: |
| 140 | sc->sc_usageid = le32toh(*(uint32_t *)obj->Buffer.Pointer); |
| 141 | break; |
| 142 | default: |
| 143 | aprint_debug_dev(dev, "unhandled ret.Length: 0x%lx\n" , |
| 144 | (unsigned long)obj->Buffer.Length); |
| 145 | sc->sc_usageid = DALB_ID_INVALID; |
| 146 | break; |
| 147 | } |
| 148 | |
| 149 | out: |
| 150 | ACPI_FREE(ret.Pointer); |
| 151 | } |
| 152 | |
| 153 | static void |
| 154 | acpi_dalb_attach(device_t parent, device_t self, void *aux) |
| 155 | { |
| 156 | struct acpi_dalb_softc *sc = device_private(self); |
| 157 | struct acpi_attach_args *aa = aux; |
| 158 | |
| 159 | aprint_naive("\n" ); |
| 160 | aprint_normal(": Direct Application Launch Button\n" ); |
| 161 | |
| 162 | sc->sc_dev = self; |
| 163 | sc->sc_node = aa->aa_node; |
| 164 | |
| 165 | config_interrupts(self, acpi_dalb_init); |
| 166 | |
| 167 | (void)pmf_device_register(self, NULL, acpi_dalb_resume); |
| 168 | (void)acpi_register_notify(sc->sc_node, acpi_dalb_notify_handler); |
| 169 | |
| 170 | sc->sc_smpsw_valid = false; |
| 171 | acpi_dalb_sysmon_init(sc); |
| 172 | } |
| 173 | |
| 174 | static int |
| 175 | acpi_dalb_detach(device_t self, int flags) |
| 176 | { |
| 177 | struct acpi_dalb_softc *sc = device_private(self); |
| 178 | |
| 179 | pmf_device_deregister(self); |
| 180 | acpi_deregister_notify(sc->sc_node); |
| 181 | sysmon_pswitch_unregister(&sc->sc_smpsw); |
| 182 | |
| 183 | return 0; |
| 184 | } |
| 185 | |
| 186 | static void |
| 187 | acpi_dalb_notify_handler(ACPI_HANDLE hdl, uint32_t notify, void *opaque) |
| 188 | { |
| 189 | device_t dev = opaque; |
| 190 | struct acpi_dalb_softc *sc = device_private(dev); |
| 191 | ACPI_STATUS rv; |
| 192 | |
| 193 | switch (notify) { |
| 194 | case DALB_SYSTEM_WAKEUP: |
| 195 | rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, |
| 196 | acpi_dalb_get_wakeup_hotkeys, dev); |
| 197 | break; |
| 198 | case DALB_SYSTEM_RUNTIME: |
| 199 | rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, |
| 200 | acpi_dalb_get_runtime_hotkeys, dev); |
| 201 | break; |
| 202 | |
| 203 | default: |
| 204 | aprint_error_dev(dev, |
| 205 | "unknown notification event 0x%x from button 0x%x\n" , |
| 206 | notify, (uint32_t)sc->sc_usageid); |
| 207 | return; |
| 208 | } |
| 209 | |
| 210 | if (ACPI_FAILURE(rv)) |
| 211 | aprint_error_dev(dev, "couldn't queue hotkey handler: %s\n" , |
| 212 | AcpiFormatException(rv)); |
| 213 | } |
| 214 | |
| 215 | static void |
| 216 | acpi_dalb_get_wakeup_hotkeys(void *opaque) |
| 217 | { |
| 218 | device_t dev = opaque; |
| 219 | struct acpi_dalb_softc *sc = device_private(dev); |
| 220 | |
| 221 | if (!sc->sc_smpsw_valid) |
| 222 | return; |
| 223 | |
| 224 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
| 225 | "invoking %s (wakeup)\n" , sc->sc_smpsw.smpsw_name)); |
| 226 | |
| 227 | sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED); |
| 228 | } |
| 229 | |
| 230 | static void |
| 231 | acpi_dalb_get_runtime_hotkeys(void *opaque) |
| 232 | { |
| 233 | device_t dev = opaque; |
| 234 | struct acpi_dalb_softc *sc = device_private(dev); |
| 235 | |
| 236 | if (!sc->sc_smpsw_valid) |
| 237 | return; |
| 238 | |
| 239 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
| 240 | "invoking %s (runtime)\n" , sc->sc_smpsw.smpsw_name)); |
| 241 | |
| 242 | sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED); |
| 243 | } |
| 244 | |
| 245 | static bool |
| 246 | acpi_dalb_resume(device_t dev, const pmf_qual_t *qual) |
| 247 | { |
| 248 | struct acpi_dalb_softc *sc = device_private(dev); |
| 249 | ACPI_STATUS rv; |
| 250 | ACPI_BUFFER ret; |
| 251 | |
| 252 | rv = acpi_eval_struct(sc->sc_node->ad_handle, "GHID" , &ret); |
| 253 | if (ACPI_FAILURE(rv)) { |
| 254 | aprint_error_dev(dev, "couldn't evaluate GHID: %s\n" , |
| 255 | AcpiFormatException(rv)); |
| 256 | return false; |
| 257 | } |
| 258 | if (ret.Pointer) |
| 259 | ACPI_FREE(ret.Pointer); |
| 260 | |
| 261 | return true; |
| 262 | } |
| 263 | |
| 264 | MODULE(MODULE_CLASS_DRIVER, acpidalb, "sysmon_power" ); |
| 265 | |
| 266 | #ifdef _MODULE |
| 267 | #include "ioconf.c" |
| 268 | #endif |
| 269 | |
| 270 | static int |
| 271 | acpidalb_modcmd(modcmd_t cmd, void *aux) |
| 272 | { |
| 273 | int rv = 0; |
| 274 | |
| 275 | switch (cmd) { |
| 276 | |
| 277 | case MODULE_CMD_INIT: |
| 278 | |
| 279 | #ifdef _MODULE |
| 280 | rv = config_init_component(cfdriver_ioconf_acpidalb, |
| 281 | cfattach_ioconf_acpidalb, cfdata_ioconf_acpidalb); |
| 282 | #endif |
| 283 | break; |
| 284 | |
| 285 | case MODULE_CMD_FINI: |
| 286 | |
| 287 | #ifdef _MODULE |
| 288 | rv = config_fini_component(cfdriver_ioconf_acpidalb, |
| 289 | cfattach_ioconf_acpidalb, cfdata_ioconf_acpidalb); |
| 290 | #endif |
| 291 | break; |
| 292 | |
| 293 | default: |
| 294 | rv = ENOTTY; |
| 295 | } |
| 296 | |
| 297 | return rv; |
| 298 | } |
| 299 | |