1/* $NetBSD: acpi_fan.c,v 1.9 2021/01/29 15:49:55 thorpej 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 1.9 2021/01/29 15:49:55 thorpej 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 42ACPI_MODULE_NAME ("acpi_fan") 43 44struct 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 51static const struct device_compatible_entry compat_data[] = { 52 { .compat = "PNP0C0B" }, 53 DEVICE_COMPAT_EOL 54}; 55 56static int acpifan_match(device_t, cfdata_t, void *); 57static void acpifan_attach(device_t, device_t, void *); 58static int acpifan_detach(device_t, int); 59static bool acpifan_suspend(device_t, const pmf_qual_t *); 60static bool acpifan_resume(device_t, const pmf_qual_t *); 61static bool acpifan_shutdown(device_t, int); 62static bool acpifan_sensor_init(device_t); 63static void acpifan_sensor_state(void *); 64static void acpifan_sensor_refresh(struct sysmon_envsys *,envsys_data_t *); 65 66CFATTACH_DECL_NEW(acpifan, sizeof(struct acpifan_softc), 67 acpifan_match, acpifan_attach, acpifan_detach, NULL); 68 69static int 70acpifan_match(device_t parent, cfdata_t match, void *aux) 71{ 72 struct acpi_attach_args *aa = aux; 73 74 return acpi_compatible_match(aa, compat_data); 75} 76 77static void 78acpifan_attach(device_t parent, device_t self, void *aux) 79{ 80 struct acpifan_softc *sc = device_private(self); 81 struct acpi_attach_args *aa = aux; 82 ACPI_HANDLE tmp; 83 ACPI_STATUS rv; 84 85 sc->sc_sme = NULL; 86 sc->sc_dev = self; 87 sc->sc_node = aa->aa_node; 88 89 aprint_naive("\n"); 90 aprint_normal(": ACPI Fan\n"); 91 92 if (acpifan_sensor_init(self) != true) 93 aprint_error_dev(self, "failed to initialize\n"); 94 95 (void)acpi_power_register(sc->sc_node->ad_handle); 96 (void)pmf_device_register1(self, acpifan_suspend, 97 acpifan_resume, acpifan_shutdown); 98 99 rv = AcpiGetHandle(sc->sc_node->ad_handle, "_FIF", &tmp); 100 101 if (ACPI_SUCCESS(rv)) 102 aprint_verbose_dev(self, "ACPI 4.0 functionality present\n"); 103} 104 105static int 106acpifan_detach(device_t self, int flags) 107{ 108 struct acpifan_softc *sc = device_private(self); 109 110 (void)acpi_power_set(sc->sc_node->ad_handle, ACPI_STATE_D0); 111 112 pmf_device_deregister(self); 113 acpi_power_deregister(sc->sc_node->ad_handle); 114 115 if (sc->sc_sme != NULL) 116 sysmon_envsys_unregister(sc->sc_sme); 117 118 return 0; 119} 120 121static bool 122acpifan_suspend(device_t self, const pmf_qual_t *qual) 123{ 124 struct acpifan_softc *sc = device_private(self); 125 126 (void)acpi_power_set(sc->sc_node->ad_handle, ACPI_STATE_D0); 127 128 return true; 129} 130 131static bool 132acpifan_resume(device_t self, const pmf_qual_t *qual) 133{ 134 struct acpifan_softc *sc = device_private(self); 135 136 (void)acpi_power_set(sc->sc_node->ad_handle, ACPI_STATE_D3); 137 138 return true; 139} 140 141static bool 142acpifan_shutdown(device_t self, int how) 143{ 144 struct acpifan_softc *sc = device_private(self); 145 146 (void)acpi_power_set(sc->sc_node->ad_handle, ACPI_STATE_D0); 147 148 return true; 149} 150 151static bool 152acpifan_sensor_init(device_t self) 153{ 154 struct acpifan_softc *sc = device_private(self); 155 int state; 156 157 if (acpi_power_get(sc->sc_node->ad_handle, &state) != true) 158 return false; 159 160 sc->sc_sme = sysmon_envsys_create(); 161 162 acpifan_sensor_state(self); 163 sc->sc_sensor.units = ENVSYS_INDICATOR; 164 165 (void)strlcpy(sc->sc_sensor.desc, "state", sizeof(sc->sc_sensor.desc)); 166 167 sc->sc_sme->sme_cookie = self; 168 sc->sc_sme->sme_flags = SME_POLL_ONLY; 169 sc->sc_sme->sme_name = device_xname(self); 170 sc->sc_sme->sme_refresh = acpifan_sensor_refresh; 171 172 if (sysmon_envsys_sensor_attach(sc->sc_sme, &sc->sc_sensor) != 0) 173 goto fail; 174 175 if (sysmon_envsys_register(sc->sc_sme) != 0) 176 goto fail; 177 178 return true; 179 180fail: 181 sysmon_envsys_destroy(sc->sc_sme); 182 sc->sc_sme = NULL; 183 184 return false; 185} 186 187static void 188acpifan_sensor_state(void *arg) 189{ 190 struct acpifan_softc *sc; 191 device_t self; 192 int state; 193 194 self = arg; 195 sc = device_private(self); 196 state = ACPI_STATE_ERROR; 197 198 (void)acpi_power_get(sc->sc_node->ad_handle, &state); 199 200 switch (state) { 201 202 case ACPI_STATE_D0: 203 case ACPI_STATE_D1: 204 case ACPI_STATE_D2: 205 sc->sc_sensor.value_cur = 1; 206 sc->sc_sensor.state = ENVSYS_SVALID; 207 break; 208 209 case ACPI_STATE_D3: 210 sc->sc_sensor.value_cur = 0; 211 sc->sc_sensor.state = ENVSYS_SVALID; 212 break; 213 214 default: 215 sc->sc_sensor.state = ENVSYS_SINVALID; 216 break; 217 } 218} 219 220static void 221acpifan_sensor_refresh(struct sysmon_envsys *sme, envsys_data_t *edata) 222{ 223 device_t self = sme->sme_cookie; 224 225 (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, acpifan_sensor_state, self); 226} 227 228MODULE(MODULE_CLASS_DRIVER, acpifan, "sysmon_envsys"); 229 230#ifdef _MODULE 231#include "ioconf.c" 232#endif 233 234static int 235acpifan_modcmd(modcmd_t cmd, void *aux) 236{ 237 int rv = 0; 238 239 switch (cmd) { 240 241 case MODULE_CMD_INIT: 242 243#ifdef _MODULE 244 rv = config_init_component(cfdriver_ioconf_acpifan, 245 cfattach_ioconf_acpifan, cfdata_ioconf_acpifan); 246#endif 247 break; 248 249 case MODULE_CMD_FINI: 250 251#ifdef _MODULE 252 rv = config_fini_component(cfdriver_ioconf_acpifan, 253 cfattach_ioconf_acpifan, cfdata_ioconf_acpifan); 254#endif 255 break; 256 257 default: 258 rv = ENOTTY; 259 } 260 261 return rv; 262} 263