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 | |