/* $NetBSD: acpi_fan.c,v 1.8 2015/04/23 23:23:00 pgoyette Exp $ */ /*- * Copyright (c) 2011 Jukka Ruohonen * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include __KERNEL_RCSID(0, "$NetBSD: acpi_fan.c,v 1.8 2015/04/23 23:23:00 pgoyette Exp $"); #include #include #include #include #include #include #define _COMPONENT ACPI_RESOURCE_COMPONENT ACPI_MODULE_NAME ("acpi_fan") struct acpifan_softc { device_t sc_dev; struct acpi_devnode *sc_node; struct sysmon_envsys *sc_sme; envsys_data_t sc_sensor; }; const char * const acpi_fan_ids[] = { "PNP0C0B", NULL }; static int acpifan_match(device_t, cfdata_t, void *); static void acpifan_attach(device_t, device_t, void *); static int acpifan_detach(device_t, int); static bool acpifan_suspend(device_t, const pmf_qual_t *); static bool acpifan_resume(device_t, const pmf_qual_t *); static bool acpifan_shutdown(device_t, int); static bool acpifan_sensor_init(device_t); static void acpifan_sensor_state(void *); static void acpifan_sensor_refresh(struct sysmon_envsys *,envsys_data_t *); CFATTACH_DECL_NEW(acpifan, sizeof(struct acpifan_softc), acpifan_match, acpifan_attach, acpifan_detach, NULL); static int acpifan_match(device_t parent, cfdata_t match, void *aux) { struct acpi_attach_args *aa = aux; if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) return 0; return acpi_match_hid(aa->aa_node->ad_devinfo, acpi_fan_ids); } static void acpifan_attach(device_t parent, device_t self, void *aux) { struct acpifan_softc *sc = device_private(self); struct acpi_attach_args *aa = aux; ACPI_HANDLE tmp; ACPI_STATUS rv; sc->sc_sme = NULL; sc->sc_dev = self; sc->sc_node = aa->aa_node; aprint_naive("\n"); aprint_normal(": ACPI Fan\n"); if (acpifan_sensor_init(self) != true) aprint_error_dev(self, "failed to initialize\n"); (void)acpi_power_register(sc->sc_node->ad_handle); (void)pmf_device_register1(self, acpifan_suspend, acpifan_resume, acpifan_shutdown); rv = AcpiGetHandle(sc->sc_node->ad_handle, "_FIF", &tmp); if (ACPI_SUCCESS(rv)) aprint_verbose_dev(self, "ACPI 4.0 functionality present\n"); } static int acpifan_detach(device_t self, int flags) { struct acpifan_softc *sc = device_private(self); (void)acpi_power_set(sc->sc_node->ad_handle, ACPI_STATE_D0); pmf_device_deregister(self); acpi_power_deregister(sc->sc_node->ad_handle); if (sc->sc_sme != NULL) sysmon_envsys_unregister(sc->sc_sme); return 0; } static bool acpifan_suspend(device_t self, const pmf_qual_t *qual) { struct acpifan_softc *sc = device_private(self); (void)acpi_power_set(sc->sc_node->ad_handle, ACPI_STATE_D0); return true; } static bool acpifan_resume(device_t self, const pmf_qual_t *qual) { struct acpifan_softc *sc = device_private(self); (void)acpi_power_set(sc->sc_node->ad_handle, ACPI_STATE_D3); return true; } static bool acpifan_shutdown(device_t self, int how) { struct acpifan_softc *sc = device_private(self); (void)acpi_power_set(sc->sc_node->ad_handle, ACPI_STATE_D0); return true; } static bool acpifan_sensor_init(device_t self) { struct acpifan_softc *sc = device_private(self); int state; if (acpi_power_get(sc->sc_node->ad_handle, &state) != true) return false; sc->sc_sme = sysmon_envsys_create(); acpifan_sensor_state(self); sc->sc_sensor.units = ENVSYS_INDICATOR; (void)strlcpy(sc->sc_sensor.desc, "state", sizeof(sc->sc_sensor.desc)); sc->sc_sme->sme_cookie = self; sc->sc_sme->sme_flags = SME_POLL_ONLY; sc->sc_sme->sme_name = device_xname(self); sc->sc_sme->sme_refresh = acpifan_sensor_refresh; if (sysmon_envsys_sensor_attach(sc->sc_sme, &sc->sc_sensor) != 0) goto fail; if (sysmon_envsys_register(sc->sc_sme) != 0) goto fail; return true; fail: sysmon_envsys_destroy(sc->sc_sme); sc->sc_sme = NULL; return false; } static void acpifan_sensor_state(void *arg) { struct acpifan_softc *sc; device_t self; int state; self = arg; sc = device_private(self); state = ACPI_STATE_ERROR; (void)acpi_power_get(sc->sc_node->ad_handle, &state); switch (state) { case ACPI_STATE_D0: case ACPI_STATE_D1: case ACPI_STATE_D2: sc->sc_sensor.value_cur = 1; sc->sc_sensor.state = ENVSYS_SVALID; break; case ACPI_STATE_D3: sc->sc_sensor.value_cur = 0; sc->sc_sensor.state = ENVSYS_SVALID; break; default: sc->sc_sensor.state = ENVSYS_SINVALID; break; } } static void acpifan_sensor_refresh(struct sysmon_envsys *sme, envsys_data_t *edata) { device_t self = sme->sme_cookie; (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, acpifan_sensor_state, self); } MODULE(MODULE_CLASS_DRIVER, acpifan, "sysmon_envsys"); #ifdef _MODULE #include "ioconf.c" #endif static int acpifan_modcmd(modcmd_t cmd, void *aux) { int rv = 0; switch (cmd) { case MODULE_CMD_INIT: #ifdef _MODULE rv = config_init_component(cfdriver_ioconf_acpifan, cfattach_ioconf_acpifan, cfdata_ioconf_acpifan); #endif break; case MODULE_CMD_FINI: #ifdef _MODULE rv = config_fini_component(cfdriver_ioconf_acpifan, cfattach_ioconf_acpifan, cfdata_ioconf_acpifan); #endif break; default: rv = ENOTTY; } return rv; }