1 | /* $NetBSD: dalb_acpi.c,v 1.18 2015/04/23 23:23:00 pgoyette Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 2008 Christoph Egger <cegger@netbsd.org> |
5 | * Copyright (c) 2008 Jared D. McNeill <jmcneill@netbsd.org> |
6 | * All rights reserved. |
7 | * |
8 | * Redistribution and use in source and binary forms, with or without |
9 | * modification, are permitted provided that the following conditions |
10 | * are met: |
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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
18 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
19 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
20 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
21 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
22 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
23 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
24 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
25 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
26 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
27 | * POSSIBILITY OF SUCH DAMAGE. |
28 | */ |
29 | #include <sys/cdefs.h> |
30 | __KERNEL_RCSID(0, "$NetBSD: dalb_acpi.c,v 1.18 2015/04/23 23:23:00 pgoyette Exp $" ); |
31 | |
32 | /* |
33 | * Direct Application Launch Button: |
34 | * http://www.microsoft.com/whdc/system/vista/DirAppLaunch.mspx |
35 | */ |
36 | |
37 | #include <sys/param.h> |
38 | #include <sys/device.h> |
39 | #include <sys/module.h> |
40 | #include <sys/systm.h> |
41 | |
42 | #include <dev/acpi/acpireg.h> |
43 | #include <dev/acpi/acpivar.h> |
44 | |
45 | #define _COMPONENT ACPI_RESOURCE_COMPONENT |
46 | ACPI_MODULE_NAME ("dalb_acpi" ) |
47 | |
48 | #define DALB_ID_INVALID -1 |
49 | |
50 | struct acpi_dalb_softc { |
51 | device_t sc_dev; |
52 | struct acpi_devnode *sc_node; |
53 | |
54 | ACPI_INTEGER sc_usageid; |
55 | |
56 | /* There's one PNP0C32 ACPI device for each button. |
57 | * Therefore, one instance is enough. */ |
58 | struct sysmon_pswitch sc_smpsw; |
59 | bool sc_smpsw_valid; |
60 | }; |
61 | |
62 | static int acpi_dalb_match(device_t, cfdata_t, void *); |
63 | static void acpi_dalb_attach(device_t, device_t, void *); |
64 | static int acpi_dalb_detach(device_t, int); |
65 | static void acpi_dalb_notify_handler(ACPI_HANDLE, uint32_t, void *); |
66 | static bool acpi_dalb_resume(device_t, const pmf_qual_t *); |
67 | |
68 | static void acpi_dalb_get_wakeup_hotkeys(void *opaque); |
69 | static void acpi_dalb_get_runtime_hotkeys(void *opaque); |
70 | |
71 | CFATTACH_DECL_NEW(acpidalb, sizeof(struct acpi_dalb_softc), |
72 | acpi_dalb_match, acpi_dalb_attach, acpi_dalb_detach, NULL); |
73 | |
74 | static const char * const acpi_dalb_ids[] = { |
75 | "PNP0C32" , /* Direct Application Launch Button */ |
76 | NULL |
77 | }; |
78 | |
79 | #define DALB_SYSTEM_WAKEUP 0x02 |
80 | #define DALB_SYSTEM_RUNTIME 0x80 |
81 | |
82 | static int |
83 | acpi_dalb_match(device_t parent, cfdata_t match, void *aux) |
84 | { |
85 | struct acpi_attach_args *aa = aux; |
86 | |
87 | if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) |
88 | return 0; |
89 | |
90 | return acpi_match_hid(aa->aa_node->ad_devinfo, acpi_dalb_ids); |
91 | } |
92 | |
93 | static void |
94 | acpi_dalb_sysmon_init(struct acpi_dalb_softc *sc) |
95 | { |
96 | sc->sc_smpsw_valid = true; |
97 | sc->sc_smpsw.smpsw_name = device_xname(sc->sc_dev); |
98 | sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_HOTKEY; |
99 | if (sysmon_pswitch_register(&sc->sc_smpsw)) { |
100 | aprint_error_dev(sc->sc_dev, |
101 | "couldn't register sleep with sysmon\n" ); |
102 | sc->sc_smpsw_valid = false; |
103 | } |
104 | } |
105 | |
106 | |
107 | static void |
108 | acpi_dalb_init(device_t dev) |
109 | { |
110 | struct acpi_dalb_softc *sc = device_private(dev); |
111 | ACPI_OBJECT *obj; |
112 | ACPI_STATUS rv; |
113 | ACPI_BUFFER ret; |
114 | |
115 | rv = acpi_eval_struct(sc->sc_node->ad_handle, "GHID" , &ret); |
116 | |
117 | if (ACPI_FAILURE(rv) || ret.Pointer == NULL) { |
118 | aprint_error_dev(dev, |
119 | "couldn't enable notify handler: (%s)\n" , |
120 | AcpiFormatException(rv)); |
121 | return; |
122 | } |
123 | |
124 | obj = ret.Pointer; |
125 | |
126 | if (obj->Type != ACPI_TYPE_BUFFER) { |
127 | sc->sc_usageid = DALB_ID_INVALID; |
128 | aprint_debug_dev(dev, "invalid ACPI type: %u\n" , obj->Type); |
129 | goto out; |
130 | } |
131 | |
132 | switch (obj->Buffer.Length) { |
133 | case 1: |
134 | sc->sc_usageid = *(uint8_t *)obj->Buffer.Pointer; |
135 | break; |
136 | case 2: |
137 | sc->sc_usageid = le16toh(*(uint16_t *)obj->Buffer.Pointer); |
138 | break; |
139 | case 4: |
140 | sc->sc_usageid = le32toh(*(uint32_t *)obj->Buffer.Pointer); |
141 | break; |
142 | default: |
143 | aprint_debug_dev(dev, "unhandled ret.Length: 0x%lx\n" , |
144 | (unsigned long)obj->Buffer.Length); |
145 | sc->sc_usageid = DALB_ID_INVALID; |
146 | break; |
147 | } |
148 | |
149 | out: |
150 | ACPI_FREE(ret.Pointer); |
151 | } |
152 | |
153 | static void |
154 | acpi_dalb_attach(device_t parent, device_t self, void *aux) |
155 | { |
156 | struct acpi_dalb_softc *sc = device_private(self); |
157 | struct acpi_attach_args *aa = aux; |
158 | |
159 | aprint_naive("\n" ); |
160 | aprint_normal(": Direct Application Launch Button\n" ); |
161 | |
162 | sc->sc_dev = self; |
163 | sc->sc_node = aa->aa_node; |
164 | |
165 | config_interrupts(self, acpi_dalb_init); |
166 | |
167 | (void)pmf_device_register(self, NULL, acpi_dalb_resume); |
168 | (void)acpi_register_notify(sc->sc_node, acpi_dalb_notify_handler); |
169 | |
170 | sc->sc_smpsw_valid = false; |
171 | acpi_dalb_sysmon_init(sc); |
172 | } |
173 | |
174 | static int |
175 | acpi_dalb_detach(device_t self, int flags) |
176 | { |
177 | struct acpi_dalb_softc *sc = device_private(self); |
178 | |
179 | pmf_device_deregister(self); |
180 | acpi_deregister_notify(sc->sc_node); |
181 | sysmon_pswitch_unregister(&sc->sc_smpsw); |
182 | |
183 | return 0; |
184 | } |
185 | |
186 | static void |
187 | acpi_dalb_notify_handler(ACPI_HANDLE hdl, uint32_t notify, void *opaque) |
188 | { |
189 | device_t dev = opaque; |
190 | struct acpi_dalb_softc *sc = device_private(dev); |
191 | ACPI_STATUS rv; |
192 | |
193 | switch (notify) { |
194 | case DALB_SYSTEM_WAKEUP: |
195 | rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, |
196 | acpi_dalb_get_wakeup_hotkeys, dev); |
197 | break; |
198 | case DALB_SYSTEM_RUNTIME: |
199 | rv = AcpiOsExecute(OSL_NOTIFY_HANDLER, |
200 | acpi_dalb_get_runtime_hotkeys, dev); |
201 | break; |
202 | |
203 | default: |
204 | aprint_error_dev(dev, |
205 | "unknown notification event 0x%x from button 0x%x\n" , |
206 | notify, (uint32_t)sc->sc_usageid); |
207 | return; |
208 | } |
209 | |
210 | if (ACPI_FAILURE(rv)) |
211 | aprint_error_dev(dev, "couldn't queue hotkey handler: %s\n" , |
212 | AcpiFormatException(rv)); |
213 | } |
214 | |
215 | static void |
216 | acpi_dalb_get_wakeup_hotkeys(void *opaque) |
217 | { |
218 | device_t dev = opaque; |
219 | struct acpi_dalb_softc *sc = device_private(dev); |
220 | |
221 | if (!sc->sc_smpsw_valid) |
222 | return; |
223 | |
224 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
225 | "invoking %s (wakeup)\n" , sc->sc_smpsw.smpsw_name)); |
226 | |
227 | sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED); |
228 | } |
229 | |
230 | static void |
231 | acpi_dalb_get_runtime_hotkeys(void *opaque) |
232 | { |
233 | device_t dev = opaque; |
234 | struct acpi_dalb_softc *sc = device_private(dev); |
235 | |
236 | if (!sc->sc_smpsw_valid) |
237 | return; |
238 | |
239 | ACPI_DEBUG_PRINT((ACPI_DB_INFO, |
240 | "invoking %s (runtime)\n" , sc->sc_smpsw.smpsw_name)); |
241 | |
242 | sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED); |
243 | } |
244 | |
245 | static bool |
246 | acpi_dalb_resume(device_t dev, const pmf_qual_t *qual) |
247 | { |
248 | struct acpi_dalb_softc *sc = device_private(dev); |
249 | ACPI_STATUS rv; |
250 | ACPI_BUFFER ret; |
251 | |
252 | rv = acpi_eval_struct(sc->sc_node->ad_handle, "GHID" , &ret); |
253 | if (ACPI_FAILURE(rv)) { |
254 | aprint_error_dev(dev, "couldn't evaluate GHID: %s\n" , |
255 | AcpiFormatException(rv)); |
256 | return false; |
257 | } |
258 | if (ret.Pointer) |
259 | ACPI_FREE(ret.Pointer); |
260 | |
261 | return true; |
262 | } |
263 | |
264 | MODULE(MODULE_CLASS_DRIVER, acpidalb, "sysmon_power" ); |
265 | |
266 | #ifdef _MODULE |
267 | #include "ioconf.c" |
268 | #endif |
269 | |
270 | static int |
271 | acpidalb_modcmd(modcmd_t cmd, void *aux) |
272 | { |
273 | int rv = 0; |
274 | |
275 | switch (cmd) { |
276 | |
277 | case MODULE_CMD_INIT: |
278 | |
279 | #ifdef _MODULE |
280 | rv = config_init_component(cfdriver_ioconf_acpidalb, |
281 | cfattach_ioconf_acpidalb, cfdata_ioconf_acpidalb); |
282 | #endif |
283 | break; |
284 | |
285 | case MODULE_CMD_FINI: |
286 | |
287 | #ifdef _MODULE |
288 | rv = config_fini_component(cfdriver_ioconf_acpidalb, |
289 | cfattach_ioconf_acpidalb, cfdata_ioconf_acpidalb); |
290 | #endif |
291 | break; |
292 | |
293 | default: |
294 | rv = ENOTTY; |
295 | } |
296 | |
297 | return rv; |
298 | } |
299 | |