acpi_fan.c revision 1.8
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 (at) 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
Indexes created Sun Sep 21 20:09:37 GMT 2025