| 1 | /* $NetBSD: acpi_fan.c,v 1.8 2015/04/23 23:23:00 pgoyette Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2011 Jukka Ruohonen <jruohonen@iki.fi> |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * |
| 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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 27 | * SUCH DAMAGE. |
| 28 | */ |
| 29 | #include <sys/cdefs.h> |
| 30 | __KERNEL_RCSID(0, "$NetBSD: acpi_fan.c,v 1.8 2015/04/23 23:23:00 pgoyette Exp $" ); |
| 31 | |
| 32 | #include <sys/param.h> |
| 33 | #include <sys/module.h> |
| 34 | |
| 35 | #include <dev/acpi/acpireg.h> |
| 36 | #include <dev/acpi/acpivar.h> |
| 37 | #include <dev/acpi/acpi_power.h> |
| 38 | |
| 39 | #include <dev/sysmon/sysmonvar.h> |
| 40 | |
| 41 | #define _COMPONENT ACPI_RESOURCE_COMPONENT |
| 42 | ACPI_MODULE_NAME ("acpi_fan" ) |
| 43 | |
| 44 | struct acpifan_softc { |
| 45 | device_t sc_dev; |
| 46 | struct acpi_devnode *sc_node; |
| 47 | struct sysmon_envsys *sc_sme; |
| 48 | envsys_data_t sc_sensor; |
| 49 | }; |
| 50 | |
| 51 | const char * const acpi_fan_ids[] = { |
| 52 | "PNP0C0B" , |
| 53 | NULL |
| 54 | }; |
| 55 | |
| 56 | static int acpifan_match(device_t, cfdata_t, void *); |
| 57 | static void acpifan_attach(device_t, device_t, void *); |
| 58 | static int acpifan_detach(device_t, int); |
| 59 | static bool acpifan_suspend(device_t, const pmf_qual_t *); |
| 60 | static bool acpifan_resume(device_t, const pmf_qual_t *); |
| 61 | static bool acpifan_shutdown(device_t, int); |
| 62 | static bool acpifan_sensor_init(device_t); |
| 63 | static void acpifan_sensor_state(void *); |
| 64 | static void acpifan_sensor_refresh(struct sysmon_envsys *,envsys_data_t *); |
| 65 | |
| 66 | CFATTACH_DECL_NEW(acpifan, sizeof(struct acpifan_softc), |
| 67 | acpifan_match, acpifan_attach, acpifan_detach, NULL); |
| 68 | |
| 69 | static int |
| 70 | acpifan_match(device_t parent, cfdata_t match, void *aux) |
| 71 | { |
| 72 | struct acpi_attach_args *aa = aux; |
| 73 | |
| 74 | if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) |
| 75 | return 0; |
| 76 | |
| 77 | return acpi_match_hid(aa->aa_node->ad_devinfo, acpi_fan_ids); |
| 78 | } |
| 79 | |
| 80 | static void |
| 81 | acpifan_attach(device_t parent, device_t self, void *aux) |
| 82 | { |
| 83 | struct acpifan_softc *sc = device_private(self); |
| 84 | struct acpi_attach_args *aa = aux; |
| 85 | ACPI_HANDLE tmp; |
| 86 | ACPI_STATUS rv; |
| 87 | |
| 88 | sc->sc_sme = NULL; |
| 89 | sc->sc_dev = self; |
| 90 | sc->sc_node = aa->aa_node; |
| 91 | |
| 92 | aprint_naive("\n" ); |
| 93 | aprint_normal(": ACPI Fan\n" ); |
| 94 | |
| 95 | if (acpifan_sensor_init(self) != true) |
| 96 | aprint_error_dev(self, "failed to initialize\n" ); |
| 97 | |
| 98 | (void)acpi_power_register(sc->sc_node->ad_handle); |
| 99 | (void)pmf_device_register1(self, acpifan_suspend, |
| 100 | acpifan_resume, acpifan_shutdown); |
| 101 | |
| 102 | rv = AcpiGetHandle(sc->sc_node->ad_handle, "_FIF" , &tmp); |
| 103 | |
| 104 | if (ACPI_SUCCESS(rv)) |
| 105 | aprint_verbose_dev(self, "ACPI 4.0 functionality present\n" ); |
| 106 | } |
| 107 | |
| 108 | static int |
| 109 | acpifan_detach(device_t self, int flags) |
| 110 | { |
| 111 | struct acpifan_softc *sc = device_private(self); |
| 112 | |
| 113 | (void)acpi_power_set(sc->sc_node->ad_handle, ACPI_STATE_D0); |
| 114 | |
| 115 | pmf_device_deregister(self); |
| 116 | acpi_power_deregister(sc->sc_node->ad_handle); |
| 117 | |
| 118 | if (sc->sc_sme != NULL) |
| 119 | sysmon_envsys_unregister(sc->sc_sme); |
| 120 | |
| 121 | return 0; |
| 122 | } |
| 123 | |
| 124 | static bool |
| 125 | acpifan_suspend(device_t self, const pmf_qual_t *qual) |
| 126 | { |
| 127 | struct acpifan_softc *sc = device_private(self); |
| 128 | |
| 129 | (void)acpi_power_set(sc->sc_node->ad_handle, ACPI_STATE_D0); |
| 130 | |
| 131 | return true; |
| 132 | } |
| 133 | |
| 134 | static bool |
| 135 | acpifan_resume(device_t self, const pmf_qual_t *qual) |
| 136 | { |
| 137 | struct acpifan_softc *sc = device_private(self); |
| 138 | |
| 139 | (void)acpi_power_set(sc->sc_node->ad_handle, ACPI_STATE_D3); |
| 140 | |
| 141 | return true; |
| 142 | } |
| 143 | |
| 144 | static bool |
| 145 | acpifan_shutdown(device_t self, int how) |
| 146 | { |
| 147 | struct acpifan_softc *sc = device_private(self); |
| 148 | |
| 149 | (void)acpi_power_set(sc->sc_node->ad_handle, ACPI_STATE_D0); |
| 150 | |
| 151 | return true; |
| 152 | } |
| 153 | |
| 154 | static bool |
| 155 | acpifan_sensor_init(device_t self) |
| 156 | { |
| 157 | struct acpifan_softc *sc = device_private(self); |
| 158 | int state; |
| 159 | |
| 160 | if (acpi_power_get(sc->sc_node->ad_handle, &state) != true) |
| 161 | return false; |
| 162 | |
| 163 | sc->sc_sme = sysmon_envsys_create(); |
| 164 | |
| 165 | acpifan_sensor_state(self); |
| 166 | sc->sc_sensor.units = ENVSYS_INDICATOR; |
| 167 | |
| 168 | (void)strlcpy(sc->sc_sensor.desc, "state" , sizeof(sc->sc_sensor.desc)); |
| 169 | |
| 170 | sc->sc_sme->sme_cookie = self; |
| 171 | sc->sc_sme->sme_flags = SME_POLL_ONLY; |
| 172 | sc->sc_sme->sme_name = device_xname(self); |
| 173 | sc->sc_sme->sme_refresh = acpifan_sensor_refresh; |
| 174 | |
| 175 | if (sysmon_envsys_sensor_attach(sc->sc_sme, &sc->sc_sensor) != 0) |
| 176 | goto fail; |
| 177 | |
| 178 | if (sysmon_envsys_register(sc->sc_sme) != 0) |
| 179 | goto fail; |
| 180 | |
| 181 | return true; |
| 182 | |
| 183 | fail: |
| 184 | sysmon_envsys_destroy(sc->sc_sme); |
| 185 | sc->sc_sme = NULL; |
| 186 | |
| 187 | return false; |
| 188 | } |
| 189 | |
| 190 | static void |
| 191 | acpifan_sensor_state(void *arg) |
| 192 | { |
| 193 | struct acpifan_softc *sc; |
| 194 | device_t self; |
| 195 | int state; |
| 196 | |
| 197 | self = arg; |
| 198 | sc = device_private(self); |
| 199 | state = ACPI_STATE_ERROR; |
| 200 | |
| 201 | (void)acpi_power_get(sc->sc_node->ad_handle, &state); |
| 202 | |
| 203 | switch (state) { |
| 204 | |
| 205 | case ACPI_STATE_D0: |
| 206 | case ACPI_STATE_D1: |
| 207 | case ACPI_STATE_D2: |
| 208 | sc->sc_sensor.value_cur = 1; |
| 209 | sc->sc_sensor.state = ENVSYS_SVALID; |
| 210 | break; |
| 211 | |
| 212 | case ACPI_STATE_D3: |
| 213 | sc->sc_sensor.value_cur = 0; |
| 214 | sc->sc_sensor.state = ENVSYS_SVALID; |
| 215 | break; |
| 216 | |
| 217 | default: |
| 218 | sc->sc_sensor.state = ENVSYS_SINVALID; |
| 219 | break; |
| 220 | } |
| 221 | } |
| 222 | |
| 223 | static void |
| 224 | acpifan_sensor_refresh(struct sysmon_envsys *sme, envsys_data_t *edata) |
| 225 | { |
| 226 | device_t self = sme->sme_cookie; |
| 227 | |
| 228 | (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, acpifan_sensor_state, self); |
| 229 | } |
| 230 | |
| 231 | MODULE(MODULE_CLASS_DRIVER, acpifan, "sysmon_envsys" ); |
| 232 | |
| 233 | #ifdef _MODULE |
| 234 | #include "ioconf.c" |
| 235 | #endif |
| 236 | |
| 237 | static int |
| 238 | acpifan_modcmd(modcmd_t cmd, void *aux) |
| 239 | { |
| 240 | int rv = 0; |
| 241 | |
| 242 | switch (cmd) { |
| 243 | |
| 244 | case MODULE_CMD_INIT: |
| 245 | |
| 246 | #ifdef _MODULE |
| 247 | rv = config_init_component(cfdriver_ioconf_acpifan, |
| 248 | cfattach_ioconf_acpifan, cfdata_ioconf_acpifan); |
| 249 | #endif |
| 250 | break; |
| 251 | |
| 252 | case MODULE_CMD_FINI: |
| 253 | |
| 254 | #ifdef _MODULE |
| 255 | rv = config_fini_component(cfdriver_ioconf_acpifan, |
| 256 | cfattach_ioconf_acpifan, cfdata_ioconf_acpifan); |
| 257 | #endif |
| 258 | break; |
| 259 | |
| 260 | default: |
| 261 | rv = ENOTTY; |
| 262 | } |
| 263 | |
| 264 | return rv; |
| 265 | } |
| 266 | |