| 1 | /* $NetBSD: acpi_acad.c,v 1.51 2015/04/23 23:23:00 pgoyette Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright 2001 Wasabi Systems, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Written by Jason R. Thorpe for Wasabi Systems, Inc. |
| 8 | * |
| 9 | * Redistribution and use in source and binary forms, with or without |
| 10 | * modification, are permitted provided that the following conditions |
| 11 | * are met: |
| 12 | * 1. Redistributions of source code must retain the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer. |
| 14 | * 2. Redistributions in binary form must reproduce the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer in the |
| 16 | * documentation and/or other materials provided with the distribution. |
| 17 | * 3. All advertising materials mentioning features or use of this software |
| 18 | * must display the following acknowledgement: |
| 19 | * This product includes software developed for the NetBSD Project by |
| 20 | * Wasabi Systems, Inc. |
| 21 | * 4. The name of Wasabi Systems, Inc. may not be used to endorse |
| 22 | * or promote products derived from this software without specific prior |
| 23 | * written permission. |
| 24 | * |
| 25 | * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND |
| 26 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 27 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 28 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC |
| 29 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 32 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 33 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 34 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 35 | * POSSIBILITY OF SUCH DAMAGE. |
| 36 | */ |
| 37 | |
| 38 | /* |
| 39 | * ACPI AC Adapter driver. |
| 40 | */ |
| 41 | |
| 42 | #include <sys/cdefs.h> |
| 43 | __KERNEL_RCSID(0, "$NetBSD: acpi_acad.c,v 1.51 2015/04/23 23:23:00 pgoyette Exp $" ); |
| 44 | |
| 45 | #include <sys/param.h> |
| 46 | #include <sys/device.h> |
| 47 | #include <sys/module.h> |
| 48 | #include <sys/systm.h> |
| 49 | |
| 50 | #include <dev/acpi/acpireg.h> |
| 51 | #include <dev/acpi/acpivar.h> |
| 52 | |
| 53 | #define _COMPONENT ACPI_ACAD_COMPONENT |
| 54 | ACPI_MODULE_NAME ("acpi_acad" ) |
| 55 | |
| 56 | #define ACPI_NOTIFY_ACAD 0x80 |
| 57 | #define ACPI_NOTIFY_ACAD_2 0x81 /* XXX. */ |
| 58 | |
| 59 | struct acpiacad_softc { |
| 60 | struct acpi_devnode *sc_node; |
| 61 | struct sysmon_envsys *sc_sme; |
| 62 | struct sysmon_pswitch sc_smpsw; |
| 63 | envsys_data_t sc_sensor; |
| 64 | int sc_status; |
| 65 | }; |
| 66 | |
| 67 | static const char * const acad_hid[] = { |
| 68 | "ACPI0003" , |
| 69 | NULL |
| 70 | }; |
| 71 | |
| 72 | static int acpiacad_match(device_t, cfdata_t, void *); |
| 73 | static void acpiacad_attach(device_t, device_t, void *); |
| 74 | static int acpiacad_detach(device_t, int); |
| 75 | static bool acpiacad_resume(device_t, const pmf_qual_t *); |
| 76 | static void acpiacad_get_status(void *); |
| 77 | static void acpiacad_notify_handler(ACPI_HANDLE, uint32_t, void *); |
| 78 | static void acpiacad_init_envsys(device_t); |
| 79 | |
| 80 | CFATTACH_DECL_NEW(acpiacad, sizeof(struct acpiacad_softc), |
| 81 | acpiacad_match, acpiacad_attach, acpiacad_detach, NULL); |
| 82 | |
| 83 | /* |
| 84 | * acpiacad_match: |
| 85 | * |
| 86 | * Autoconfiguration `match' routine. |
| 87 | */ |
| 88 | static int |
| 89 | acpiacad_match(device_t parent, cfdata_t match, void *aux) |
| 90 | { |
| 91 | struct acpi_attach_args *aa = aux; |
| 92 | |
| 93 | if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) |
| 94 | return 0; |
| 95 | |
| 96 | return acpi_match_hid(aa->aa_node->ad_devinfo, acad_hid); |
| 97 | } |
| 98 | |
| 99 | /* |
| 100 | * acpiacad_attach: |
| 101 | * |
| 102 | * Autoconfiguration `attach' routine. |
| 103 | */ |
| 104 | static void |
| 105 | acpiacad_attach(device_t parent, device_t self, void *aux) |
| 106 | { |
| 107 | struct acpiacad_softc *sc = device_private(self); |
| 108 | struct acpi_attach_args *aa = aux; |
| 109 | |
| 110 | aprint_naive(": ACPI AC Adapter\n" ); |
| 111 | aprint_normal(": ACPI AC Adapter\n" ); |
| 112 | |
| 113 | sc->sc_sme = NULL; |
| 114 | sc->sc_status = -1; |
| 115 | sc->sc_node = aa->aa_node; |
| 116 | |
| 117 | acpiacad_init_envsys(self); |
| 118 | |
| 119 | sc->sc_smpsw.smpsw_name = device_xname(self); |
| 120 | sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_ACADAPTER; |
| 121 | |
| 122 | (void)sysmon_pswitch_register(&sc->sc_smpsw); |
| 123 | (void)pmf_device_register(self, NULL, acpiacad_resume); |
| 124 | (void)acpi_register_notify(sc->sc_node, acpiacad_notify_handler); |
| 125 | } |
| 126 | |
| 127 | /* |
| 128 | * acpiacad_detach: |
| 129 | * |
| 130 | * Autoconfiguration `detach' routine. |
| 131 | */ |
| 132 | static int |
| 133 | acpiacad_detach(device_t self, int flags) |
| 134 | { |
| 135 | struct acpiacad_softc *sc = device_private(self); |
| 136 | |
| 137 | acpi_deregister_notify(sc->sc_node); |
| 138 | |
| 139 | if (sc->sc_sme != NULL) |
| 140 | sysmon_envsys_unregister(sc->sc_sme); |
| 141 | |
| 142 | pmf_device_deregister(self); |
| 143 | sysmon_pswitch_unregister(&sc->sc_smpsw); |
| 144 | |
| 145 | return 0; |
| 146 | } |
| 147 | |
| 148 | /* |
| 149 | * acpiacad_resume: |
| 150 | * |
| 151 | * Queue a new status check. |
| 152 | */ |
| 153 | static bool |
| 154 | acpiacad_resume(device_t dv, const pmf_qual_t *qual) |
| 155 | { |
| 156 | |
| 157 | (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, acpiacad_get_status, dv); |
| 158 | |
| 159 | return true; |
| 160 | } |
| 161 | |
| 162 | /* |
| 163 | * acpiacad_get_status: |
| 164 | * |
| 165 | * Get, and possibly display, the current AC line status. |
| 166 | */ |
| 167 | static void |
| 168 | acpiacad_get_status(void *arg) |
| 169 | { |
| 170 | device_t dv = arg; |
| 171 | struct acpiacad_softc *sc = device_private(dv); |
| 172 | ACPI_INTEGER status; |
| 173 | ACPI_STATUS rv; |
| 174 | |
| 175 | rv = acpi_eval_integer(sc->sc_node->ad_handle, "_PSR" , &status); |
| 176 | |
| 177 | if (ACPI_FAILURE(rv)) |
| 178 | goto fail; |
| 179 | |
| 180 | if (status != 0 && status != 1) { |
| 181 | rv = AE_BAD_VALUE; |
| 182 | goto fail; |
| 183 | } |
| 184 | |
| 185 | if (sc->sc_status != (int)status) { |
| 186 | |
| 187 | /* |
| 188 | * If status has changed, send the event: |
| 189 | * |
| 190 | * PSWITCH_EVENT_PRESSED : _PSR = 1 : AC online. |
| 191 | * PSWITCH_EVENT_RELEASED : _PSR = 0 : AC offline. |
| 192 | */ |
| 193 | sysmon_pswitch_event(&sc->sc_smpsw, (status != 0) ? |
| 194 | PSWITCH_EVENT_PRESSED : PSWITCH_EVENT_RELEASED); |
| 195 | |
| 196 | aprint_debug_dev(dv, "AC adapter %sconnected\n" , |
| 197 | status == 0 ? "not " : "" ); |
| 198 | } |
| 199 | |
| 200 | sc->sc_status = status; |
| 201 | sc->sc_sensor.state = ENVSYS_SVALID; |
| 202 | sc->sc_sensor.value_cur = sc->sc_status; |
| 203 | |
| 204 | return; |
| 205 | |
| 206 | fail: |
| 207 | sc->sc_status = -1; |
| 208 | sc->sc_sensor.state = ENVSYS_SINVALID; |
| 209 | |
| 210 | aprint_debug_dev(dv, "failed to evaluate _PSR: %s\n" , |
| 211 | AcpiFormatException(rv)); |
| 212 | } |
| 213 | |
| 214 | /* |
| 215 | * acpiacad_notify_handler: |
| 216 | * |
| 217 | * Callback from ACPI interrupt handler to notify us of an event. |
| 218 | */ |
| 219 | static void |
| 220 | acpiacad_notify_handler(ACPI_HANDLE handle, uint32_t notify, void *context) |
| 221 | { |
| 222 | static const int handler = OSL_NOTIFY_HANDLER; |
| 223 | device_t dv = context; |
| 224 | |
| 225 | switch (notify) { |
| 226 | /* |
| 227 | * XXX So, BusCheck is not exactly what I would expect, |
| 228 | * but at least my IBM T21 sends it on AC adapter status |
| 229 | * change. --thorpej@wasabisystems.com |
| 230 | */ |
| 231 | /* |
| 232 | * XXX My Acer TravelMate 291 sends DeviceCheck on AC |
| 233 | * adapter status change. |
| 234 | * --rpaulo@NetBSD.org |
| 235 | */ |
| 236 | /* |
| 237 | * XXX Sony VAIO VGN-N250E sends 0x81 on AC adapter status change. |
| 238 | * --jmcneill@NetBSD.org |
| 239 | */ |
| 240 | case ACPI_NOTIFY_ACAD: |
| 241 | case ACPI_NOTIFY_ACAD_2: |
| 242 | case ACPI_NOTIFY_BUS_CHECK: |
| 243 | case ACPI_NOTIFY_DEVICE_CHECK: |
| 244 | (void)AcpiOsExecute(handler, acpiacad_get_status, dv); |
| 245 | break; |
| 246 | |
| 247 | case ACPI_NOTIFY_DEVICE_WAKE: |
| 248 | break; |
| 249 | |
| 250 | default: |
| 251 | aprint_debug_dev(dv, "unknown notify 0x%02X\n" , notify); |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | static void |
| 256 | acpiacad_init_envsys(device_t dv) |
| 257 | { |
| 258 | struct acpiacad_softc *sc = device_private(dv); |
| 259 | |
| 260 | sc->sc_sme = sysmon_envsys_create(); |
| 261 | |
| 262 | sc->sc_sensor.state = ENVSYS_SINVALID; |
| 263 | sc->sc_sensor.units = ENVSYS_INDICATOR; |
| 264 | |
| 265 | (void)strlcpy(sc->sc_sensor.desc, "connected" , ENVSYS_DESCLEN); |
| 266 | |
| 267 | if (sysmon_envsys_sensor_attach(sc->sc_sme, &sc->sc_sensor) != 0) |
| 268 | goto fail; |
| 269 | |
| 270 | sc->sc_sme->sme_name = device_xname(dv); |
| 271 | sc->sc_sme->sme_class = SME_CLASS_ACADAPTER; |
| 272 | sc->sc_sme->sme_flags = SME_DISABLE_REFRESH; |
| 273 | |
| 274 | if (sysmon_envsys_register(sc->sc_sme) != 0) |
| 275 | goto fail; |
| 276 | |
| 277 | (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, acpiacad_get_status, dv); |
| 278 | |
| 279 | return; |
| 280 | |
| 281 | fail: |
| 282 | aprint_error_dev(dv, "failed to initialize sysmon\n" ); |
| 283 | |
| 284 | sysmon_envsys_destroy(sc->sc_sme); |
| 285 | sc->sc_sme = NULL; |
| 286 | } |
| 287 | |
| 288 | MODULE(MODULE_CLASS_DRIVER, acpiacad, "sysmon_envsys,sysmon_power" ); |
| 289 | |
| 290 | #ifdef _MODULE |
| 291 | #include "ioconf.c" |
| 292 | #endif |
| 293 | |
| 294 | static int |
| 295 | acpiacad_modcmd(modcmd_t cmd, void *aux) |
| 296 | { |
| 297 | int rv = 0; |
| 298 | |
| 299 | switch (cmd) { |
| 300 | |
| 301 | case MODULE_CMD_INIT: |
| 302 | |
| 303 | #ifdef _MODULE |
| 304 | rv = config_init_component(cfdriver_ioconf_acpiacad, |
| 305 | cfattach_ioconf_acpiacad, cfdata_ioconf_acpiacad); |
| 306 | #endif |
| 307 | break; |
| 308 | |
| 309 | case MODULE_CMD_FINI: |
| 310 | |
| 311 | #ifdef _MODULE |
| 312 | rv = config_fini_component(cfdriver_ioconf_acpiacad, |
| 313 | cfattach_ioconf_acpiacad, cfdata_ioconf_acpiacad); |
| 314 | #endif |
| 315 | break; |
| 316 | |
| 317 | default: |
| 318 | rv = ENOTTY; |
| 319 | } |
| 320 | |
| 321 | return rv; |
| 322 | } |
| 323 | |