1 | /* $NetBSD: acpi_acad.c,v 1.51 2015/04/23 23:23:00 pgoyette Exp $ */ |
2 | |
3 | /* |
4 | * Copyright 2001 Wasabi Systems, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * Written by Jason R. Thorpe for Wasabi Systems, Inc. |
8 | * |
9 | * Redistribution and use in source and binary forms, with or without |
10 | * modification, are permitted provided that the following conditions |
11 | * are met: |
12 | * 1. Redistributions of source code must retain the above copyright |
13 | * notice, this list of conditions and the following disclaimer. |
14 | * 2. Redistributions in binary form must reproduce the above copyright |
15 | * notice, this list of conditions and the following disclaimer in the |
16 | * documentation and/or other materials provided with the distribution. |
17 | * 3. All advertising materials mentioning features or use of this software |
18 | * must display the following acknowledgement: |
19 | * This product includes software developed for the NetBSD Project by |
20 | * Wasabi Systems, Inc. |
21 | * 4. The name of Wasabi Systems, Inc. may not be used to endorse |
22 | * or promote products derived from this software without specific prior |
23 | * written permission. |
24 | * |
25 | * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND |
26 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
27 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
28 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC |
29 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
32 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
33 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
34 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
35 | * POSSIBILITY OF SUCH DAMAGE. |
36 | */ |
37 | |
38 | /* |
39 | * ACPI AC Adapter driver. |
40 | */ |
41 | |
42 | #include <sys/cdefs.h> |
43 | __KERNEL_RCSID(0, "$NetBSD: acpi_acad.c,v 1.51 2015/04/23 23:23:00 pgoyette Exp $" ); |
44 | |
45 | #include <sys/param.h> |
46 | #include <sys/device.h> |
47 | #include <sys/module.h> |
48 | #include <sys/systm.h> |
49 | |
50 | #include <dev/acpi/acpireg.h> |
51 | #include <dev/acpi/acpivar.h> |
52 | |
53 | #define _COMPONENT ACPI_ACAD_COMPONENT |
54 | ACPI_MODULE_NAME ("acpi_acad" ) |
55 | |
56 | #define ACPI_NOTIFY_ACAD 0x80 |
57 | #define ACPI_NOTIFY_ACAD_2 0x81 /* XXX. */ |
58 | |
59 | struct acpiacad_softc { |
60 | struct acpi_devnode *sc_node; |
61 | struct sysmon_envsys *sc_sme; |
62 | struct sysmon_pswitch sc_smpsw; |
63 | envsys_data_t sc_sensor; |
64 | int sc_status; |
65 | }; |
66 | |
67 | static const char * const acad_hid[] = { |
68 | "ACPI0003" , |
69 | NULL |
70 | }; |
71 | |
72 | static int acpiacad_match(device_t, cfdata_t, void *); |
73 | static void acpiacad_attach(device_t, device_t, void *); |
74 | static int acpiacad_detach(device_t, int); |
75 | static bool acpiacad_resume(device_t, const pmf_qual_t *); |
76 | static void acpiacad_get_status(void *); |
77 | static void acpiacad_notify_handler(ACPI_HANDLE, uint32_t, void *); |
78 | static void acpiacad_init_envsys(device_t); |
79 | |
80 | CFATTACH_DECL_NEW(acpiacad, sizeof(struct acpiacad_softc), |
81 | acpiacad_match, acpiacad_attach, acpiacad_detach, NULL); |
82 | |
83 | /* |
84 | * acpiacad_match: |
85 | * |
86 | * Autoconfiguration `match' routine. |
87 | */ |
88 | static int |
89 | acpiacad_match(device_t parent, cfdata_t match, void *aux) |
90 | { |
91 | struct acpi_attach_args *aa = aux; |
92 | |
93 | if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) |
94 | return 0; |
95 | |
96 | return acpi_match_hid(aa->aa_node->ad_devinfo, acad_hid); |
97 | } |
98 | |
99 | /* |
100 | * acpiacad_attach: |
101 | * |
102 | * Autoconfiguration `attach' routine. |
103 | */ |
104 | static void |
105 | acpiacad_attach(device_t parent, device_t self, void *aux) |
106 | { |
107 | struct acpiacad_softc *sc = device_private(self); |
108 | struct acpi_attach_args *aa = aux; |
109 | |
110 | aprint_naive(": ACPI AC Adapter\n" ); |
111 | aprint_normal(": ACPI AC Adapter\n" ); |
112 | |
113 | sc->sc_sme = NULL; |
114 | sc->sc_status = -1; |
115 | sc->sc_node = aa->aa_node; |
116 | |
117 | acpiacad_init_envsys(self); |
118 | |
119 | sc->sc_smpsw.smpsw_name = device_xname(self); |
120 | sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_ACADAPTER; |
121 | |
122 | (void)sysmon_pswitch_register(&sc->sc_smpsw); |
123 | (void)pmf_device_register(self, NULL, acpiacad_resume); |
124 | (void)acpi_register_notify(sc->sc_node, acpiacad_notify_handler); |
125 | } |
126 | |
127 | /* |
128 | * acpiacad_detach: |
129 | * |
130 | * Autoconfiguration `detach' routine. |
131 | */ |
132 | static int |
133 | acpiacad_detach(device_t self, int flags) |
134 | { |
135 | struct acpiacad_softc *sc = device_private(self); |
136 | |
137 | acpi_deregister_notify(sc->sc_node); |
138 | |
139 | if (sc->sc_sme != NULL) |
140 | sysmon_envsys_unregister(sc->sc_sme); |
141 | |
142 | pmf_device_deregister(self); |
143 | sysmon_pswitch_unregister(&sc->sc_smpsw); |
144 | |
145 | return 0; |
146 | } |
147 | |
148 | /* |
149 | * acpiacad_resume: |
150 | * |
151 | * Queue a new status check. |
152 | */ |
153 | static bool |
154 | acpiacad_resume(device_t dv, const pmf_qual_t *qual) |
155 | { |
156 | |
157 | (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, acpiacad_get_status, dv); |
158 | |
159 | return true; |
160 | } |
161 | |
162 | /* |
163 | * acpiacad_get_status: |
164 | * |
165 | * Get, and possibly display, the current AC line status. |
166 | */ |
167 | static void |
168 | acpiacad_get_status(void *arg) |
169 | { |
170 | device_t dv = arg; |
171 | struct acpiacad_softc *sc = device_private(dv); |
172 | ACPI_INTEGER status; |
173 | ACPI_STATUS rv; |
174 | |
175 | rv = acpi_eval_integer(sc->sc_node->ad_handle, "_PSR" , &status); |
176 | |
177 | if (ACPI_FAILURE(rv)) |
178 | goto fail; |
179 | |
180 | if (status != 0 && status != 1) { |
181 | rv = AE_BAD_VALUE; |
182 | goto fail; |
183 | } |
184 | |
185 | if (sc->sc_status != (int)status) { |
186 | |
187 | /* |
188 | * If status has changed, send the event: |
189 | * |
190 | * PSWITCH_EVENT_PRESSED : _PSR = 1 : AC online. |
191 | * PSWITCH_EVENT_RELEASED : _PSR = 0 : AC offline. |
192 | */ |
193 | sysmon_pswitch_event(&sc->sc_smpsw, (status != 0) ? |
194 | PSWITCH_EVENT_PRESSED : PSWITCH_EVENT_RELEASED); |
195 | |
196 | aprint_debug_dev(dv, "AC adapter %sconnected\n" , |
197 | status == 0 ? "not " : "" ); |
198 | } |
199 | |
200 | sc->sc_status = status; |
201 | sc->sc_sensor.state = ENVSYS_SVALID; |
202 | sc->sc_sensor.value_cur = sc->sc_status; |
203 | |
204 | return; |
205 | |
206 | fail: |
207 | sc->sc_status = -1; |
208 | sc->sc_sensor.state = ENVSYS_SINVALID; |
209 | |
210 | aprint_debug_dev(dv, "failed to evaluate _PSR: %s\n" , |
211 | AcpiFormatException(rv)); |
212 | } |
213 | |
214 | /* |
215 | * acpiacad_notify_handler: |
216 | * |
217 | * Callback from ACPI interrupt handler to notify us of an event. |
218 | */ |
219 | static void |
220 | acpiacad_notify_handler(ACPI_HANDLE handle, uint32_t notify, void *context) |
221 | { |
222 | static const int handler = OSL_NOTIFY_HANDLER; |
223 | device_t dv = context; |
224 | |
225 | switch (notify) { |
226 | /* |
227 | * XXX So, BusCheck is not exactly what I would expect, |
228 | * but at least my IBM T21 sends it on AC adapter status |
229 | * change. --thorpej@wasabisystems.com |
230 | */ |
231 | /* |
232 | * XXX My Acer TravelMate 291 sends DeviceCheck on AC |
233 | * adapter status change. |
234 | * --rpaulo@NetBSD.org |
235 | */ |
236 | /* |
237 | * XXX Sony VAIO VGN-N250E sends 0x81 on AC adapter status change. |
238 | * --jmcneill@NetBSD.org |
239 | */ |
240 | case ACPI_NOTIFY_ACAD: |
241 | case ACPI_NOTIFY_ACAD_2: |
242 | case ACPI_NOTIFY_BUS_CHECK: |
243 | case ACPI_NOTIFY_DEVICE_CHECK: |
244 | (void)AcpiOsExecute(handler, acpiacad_get_status, dv); |
245 | break; |
246 | |
247 | case ACPI_NOTIFY_DEVICE_WAKE: |
248 | break; |
249 | |
250 | default: |
251 | aprint_debug_dev(dv, "unknown notify 0x%02X\n" , notify); |
252 | } |
253 | } |
254 | |
255 | static void |
256 | acpiacad_init_envsys(device_t dv) |
257 | { |
258 | struct acpiacad_softc *sc = device_private(dv); |
259 | |
260 | sc->sc_sme = sysmon_envsys_create(); |
261 | |
262 | sc->sc_sensor.state = ENVSYS_SINVALID; |
263 | sc->sc_sensor.units = ENVSYS_INDICATOR; |
264 | |
265 | (void)strlcpy(sc->sc_sensor.desc, "connected" , ENVSYS_DESCLEN); |
266 | |
267 | if (sysmon_envsys_sensor_attach(sc->sc_sme, &sc->sc_sensor) != 0) |
268 | goto fail; |
269 | |
270 | sc->sc_sme->sme_name = device_xname(dv); |
271 | sc->sc_sme->sme_class = SME_CLASS_ACADAPTER; |
272 | sc->sc_sme->sme_flags = SME_DISABLE_REFRESH; |
273 | |
274 | if (sysmon_envsys_register(sc->sc_sme) != 0) |
275 | goto fail; |
276 | |
277 | (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, acpiacad_get_status, dv); |
278 | |
279 | return; |
280 | |
281 | fail: |
282 | aprint_error_dev(dv, "failed to initialize sysmon\n" ); |
283 | |
284 | sysmon_envsys_destroy(sc->sc_sme); |
285 | sc->sc_sme = NULL; |
286 | } |
287 | |
288 | MODULE(MODULE_CLASS_DRIVER, acpiacad, "sysmon_envsys,sysmon_power" ); |
289 | |
290 | #ifdef _MODULE |
291 | #include "ioconf.c" |
292 | #endif |
293 | |
294 | static int |
295 | acpiacad_modcmd(modcmd_t cmd, void *aux) |
296 | { |
297 | int rv = 0; |
298 | |
299 | switch (cmd) { |
300 | |
301 | case MODULE_CMD_INIT: |
302 | |
303 | #ifdef _MODULE |
304 | rv = config_init_component(cfdriver_ioconf_acpiacad, |
305 | cfattach_ioconf_acpiacad, cfdata_ioconf_acpiacad); |
306 | #endif |
307 | break; |
308 | |
309 | case MODULE_CMD_FINI: |
310 | |
311 | #ifdef _MODULE |
312 | rv = config_fini_component(cfdriver_ioconf_acpiacad, |
313 | cfattach_ioconf_acpiacad, cfdata_ioconf_acpiacad); |
314 | #endif |
315 | break; |
316 | |
317 | default: |
318 | rv = ENOTTY; |
319 | } |
320 | |
321 | return rv; |
322 | } |
323 | |