1 /* $NetBSD: acpi_acad.c,v 1.52 2021/01/29 15:20:13 thorpej 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 1.52 2021/01/29 15:20:13 thorpej 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 struct device_compatible_entry compat_data[] = {
68 { .compat = "ACPI0003" },
69 DEVICE_COMPAT_EOL
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
acpiacad_match(device_t parent,cfdata_t match,void * aux)89 acpiacad_match(device_t parent, cfdata_t match, void *aux)
90 {
91 struct acpi_attach_args *aa = aux;
92
93 return acpi_compatible_match(aa, compat_data);
94 }
95
96 /*
97 * acpiacad_attach:
98 *
99 * Autoconfiguration `attach' routine.
100 */
101 static void
acpiacad_attach(device_t parent,device_t self,void * aux)102 acpiacad_attach(device_t parent, device_t self, void *aux)
103 {
104 struct acpiacad_softc *sc = device_private(self);
105 struct acpi_attach_args *aa = aux;
106
107 aprint_naive(": ACPI AC Adapter\n");
108 aprint_normal(": ACPI AC Adapter\n");
109
110 sc->sc_sme = NULL;
111 sc->sc_status = -1;
112 sc->sc_node = aa->aa_node;
113
114 acpiacad_init_envsys(self);
115
116 sc->sc_smpsw.smpsw_name = device_xname(self);
117 sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_ACADAPTER;
118
119 (void)sysmon_pswitch_register(&sc->sc_smpsw);
120 (void)pmf_device_register(self, NULL, acpiacad_resume);
121 (void)acpi_register_notify(sc->sc_node, acpiacad_notify_handler);
122 }
123
124 /*
125 * acpiacad_detach:
126 *
127 * Autoconfiguration `detach' routine.
128 */
129 static int
acpiacad_detach(device_t self,int flags)130 acpiacad_detach(device_t self, int flags)
131 {
132 struct acpiacad_softc *sc = device_private(self);
133
134 acpi_deregister_notify(sc->sc_node);
135
136 if (sc->sc_sme != NULL)
137 sysmon_envsys_unregister(sc->sc_sme);
138
139 pmf_device_deregister(self);
140 sysmon_pswitch_unregister(&sc->sc_smpsw);
141
142 return 0;
143 }
144
145 /*
146 * acpiacad_resume:
147 *
148 * Queue a new status check.
149 */
150 static bool
acpiacad_resume(device_t dv,const pmf_qual_t * qual)151 acpiacad_resume(device_t dv, const pmf_qual_t *qual)
152 {
153
154 (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, acpiacad_get_status, dv);
155
156 return true;
157 }
158
159 /*
160 * acpiacad_get_status:
161 *
162 * Get, and possibly display, the current AC line status.
163 */
164 static void
acpiacad_get_status(void * arg)165 acpiacad_get_status(void *arg)
166 {
167 device_t dv = arg;
168 struct acpiacad_softc *sc = device_private(dv);
169 ACPI_INTEGER status;
170 ACPI_STATUS rv;
171
172 rv = acpi_eval_integer(sc->sc_node->ad_handle, "_PSR", &status);
173
174 if (ACPI_FAILURE(rv))
175 goto fail;
176
177 if (status != 0 && status != 1) {
178 rv = AE_BAD_VALUE;
179 goto fail;
180 }
181
182 if (sc->sc_status != (int)status) {
183
184 /*
185 * If status has changed, send the event:
186 *
187 * PSWITCH_EVENT_PRESSED : _PSR = 1 : AC online.
188 * PSWITCH_EVENT_RELEASED : _PSR = 0 : AC offline.
189 */
190 sysmon_pswitch_event(&sc->sc_smpsw, (status != 0) ?
191 PSWITCH_EVENT_PRESSED : PSWITCH_EVENT_RELEASED);
192
193 aprint_debug_dev(dv, "AC adapter %sconnected\n",
194 status == 0 ? "not " : "");
195 }
196
197 sc->sc_status = status;
198 sc->sc_sensor.state = ENVSYS_SVALID;
199 sc->sc_sensor.value_cur = sc->sc_status;
200
201 return;
202
203 fail:
204 sc->sc_status = -1;
205 sc->sc_sensor.state = ENVSYS_SINVALID;
206
207 aprint_debug_dev(dv, "failed to evaluate _PSR: %s\n",
208 AcpiFormatException(rv));
209 }
210
211 /*
212 * acpiacad_notify_handler:
213 *
214 * Callback from ACPI interrupt handler to notify us of an event.
215 */
216 static void
acpiacad_notify_handler(ACPI_HANDLE handle,uint32_t notify,void * context)217 acpiacad_notify_handler(ACPI_HANDLE handle, uint32_t notify, void *context)
218 {
219 static const int handler = OSL_NOTIFY_HANDLER;
220 device_t dv = context;
221
222 switch (notify) {
223 /*
224 * XXX So, BusCheck is not exactly what I would expect,
225 * but at least my IBM T21 sends it on AC adapter status
226 * change. --thorpej@wasabisystems.com
227 */
228 /*
229 * XXX My Acer TravelMate 291 sends DeviceCheck on AC
230 * adapter status change.
231 * --rpaulo@NetBSD.org
232 */
233 /*
234 * XXX Sony VAIO VGN-N250E sends 0x81 on AC adapter status change.
235 * --jmcneill@NetBSD.org
236 */
237 case ACPI_NOTIFY_ACAD:
238 case ACPI_NOTIFY_ACAD_2:
239 case ACPI_NOTIFY_BUS_CHECK:
240 case ACPI_NOTIFY_DEVICE_CHECK:
241 (void)AcpiOsExecute(handler, acpiacad_get_status, dv);
242 break;
243
244 case ACPI_NOTIFY_DEVICE_WAKE:
245 break;
246
247 default:
248 aprint_debug_dev(dv, "unknown notify 0x%02X\n", notify);
249 }
250 }
251
252 static void
acpiacad_init_envsys(device_t dv)253 acpiacad_init_envsys(device_t dv)
254 {
255 struct acpiacad_softc *sc = device_private(dv);
256
257 sc->sc_sme = sysmon_envsys_create();
258
259 sc->sc_sensor.state = ENVSYS_SINVALID;
260 sc->sc_sensor.units = ENVSYS_INDICATOR;
261
262 (void)strlcpy(sc->sc_sensor.desc, "connected", ENVSYS_DESCLEN);
263
264 if (sysmon_envsys_sensor_attach(sc->sc_sme, &sc->sc_sensor) != 0)
265 goto fail;
266
267 sc->sc_sme->sme_name = device_xname(dv);
268 sc->sc_sme->sme_class = SME_CLASS_ACADAPTER;
269 sc->sc_sme->sme_flags = SME_DISABLE_REFRESH;
270
271 if (sysmon_envsys_register(sc->sc_sme) != 0)
272 goto fail;
273
274 (void)AcpiOsExecute(OSL_NOTIFY_HANDLER, acpiacad_get_status, dv);
275
276 return;
277
278 fail:
279 aprint_error_dev(dv, "failed to initialize sysmon\n");
280
281 sysmon_envsys_destroy(sc->sc_sme);
282 sc->sc_sme = NULL;
283 }
284
285 MODULE(MODULE_CLASS_DRIVER, acpiacad, "sysmon_envsys,sysmon_power");
286
287 #ifdef _MODULE
288 #include "ioconf.c"
289 #endif
290
291 static int
acpiacad_modcmd(modcmd_t cmd,void * aux)292 acpiacad_modcmd(modcmd_t cmd, void *aux)
293 {
294 int rv = 0;
295
296 switch (cmd) {
297
298 case MODULE_CMD_INIT:
299
300 #ifdef _MODULE
301 rv = config_init_component(cfdriver_ioconf_acpiacad,
302 cfattach_ioconf_acpiacad, cfdata_ioconf_acpiacad);
303 #endif
304 break;
305
306 case MODULE_CMD_FINI:
307
308 #ifdef _MODULE
309 rv = config_fini_component(cfdriver_ioconf_acpiacad,
310 cfattach_ioconf_acpiacad, cfdata_ioconf_acpiacad);
311 #endif
312 break;
313
314 default:
315 rv = ENOTTY;
316 }
317
318 return rv;
319 }
320