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
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
51const char * const acpi_fan_ids[] = {
52 "PNP0C0B",
53 NULL
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 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
80static void
81acpifan_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
108static int
109acpifan_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
124static bool
125acpifan_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
134static bool
135acpifan_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
144static bool
145acpifan_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
154static bool
155acpifan_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
183fail:
184 sysmon_envsys_destroy(sc->sc_sme);
185 sc->sc_sme = NULL;
186
187 return false;
188}
189
190static void
191acpifan_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
223static void
224acpifan_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
231MODULE(MODULE_CLASS_DRIVER, acpifan, "sysmon_envsys");
232
233#ifdef _MODULE
234#include "ioconf.c"
235#endif
236
237static int
238acpifan_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