1 | /* $NetBSD: wmi_dell.c,v 1.9 2015/04/23 23:23:00 pgoyette Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 2009, 2010 The NetBSD Foundation, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * This code is derived from software contributed to The NetBSD Foundation |
8 | * by Jukka Ruohonen. |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
13 | * |
14 | * 1. Redistributions of source code must retain the above copyright |
15 | * notice, this list of conditions and the following disclaimer. |
16 | * 2. Redistributions in binary form must reproduce the above copyright |
17 | * notice, this list of conditions and the following disclaimer in the |
18 | * documentation and/or other materials provided with the distribution. |
19 | * |
20 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
30 | * SUCH DAMAGE. |
31 | */ |
32 | |
33 | #include <sys/cdefs.h> |
34 | __KERNEL_RCSID(0, "$NetBSD: wmi_dell.c,v 1.9 2015/04/23 23:23:00 pgoyette Exp $" ); |
35 | |
36 | #include <sys/param.h> |
37 | #include <sys/device.h> |
38 | #include <sys/module.h> |
39 | |
40 | #include <dev/acpi/acpireg.h> |
41 | #include <dev/acpi/acpivar.h> |
42 | #include <dev/acpi/wmi/wmi_acpivar.h> |
43 | |
44 | #include <dev/sysmon/sysmonvar.h> |
45 | |
46 | #define _COMPONENT ACPI_RESOURCE_COMPONENT |
47 | ACPI_MODULE_NAME ("wmi_dell" ) |
48 | |
49 | #define WMI_DELL_HOTKEY_BRIGHTNESS_DOWN 0xE005 |
50 | #define WMI_DELL_HOTKEY_BRIGHTNESS_UP 0xE006 |
51 | #define WMI_DELL_HOTKEY_DISPLAY_CYCLE 0xE00B |
52 | #define WMI_DELL_HOTKEY_VOLUME_MUTE 0xE020 |
53 | #define WMI_DELL_HOTKEY_VOLUME_DOWN 0xE02E |
54 | #define WMI_DELL_HOTKEY_VOLUME_UP 0xE030 |
55 | /* WMI_DELL_HOTKEY_UNKNOWN 0xXXXX */ |
56 | |
57 | #define WMI_DELL_PSW_DISPLAY_CYCLE 0 |
58 | #define WMI_DELL_PSW_COUNT 1 |
59 | |
60 | #define WMI_DELL_GUID_EVENT "9DBB5994-A997-11DA-B012-B622A1EF5492" |
61 | |
62 | struct wmi_dell_softc { |
63 | device_t sc_dev; |
64 | device_t sc_parent; |
65 | struct sysmon_pswitch sc_smpsw[WMI_DELL_PSW_COUNT]; |
66 | bool sc_smpsw_valid; |
67 | }; |
68 | |
69 | static int wmi_dell_match(device_t, cfdata_t, void *); |
70 | static void wmi_dell_attach(device_t, device_t, void *); |
71 | static int wmi_dell_detach(device_t, int); |
72 | static void wmi_dell_notify_handler(ACPI_HANDLE, uint32_t, void *); |
73 | static bool wmi_dell_suspend(device_t, const pmf_qual_t *); |
74 | static bool wmi_dell_resume(device_t, const pmf_qual_t *); |
75 | |
76 | CFATTACH_DECL_NEW(wmidell, sizeof(struct wmi_dell_softc), |
77 | wmi_dell_match, wmi_dell_attach, wmi_dell_detach, NULL); |
78 | |
79 | static int |
80 | wmi_dell_match(device_t parent, cfdata_t match, void *aux) |
81 | { |
82 | return acpi_wmi_guid_match(parent, WMI_DELL_GUID_EVENT); |
83 | } |
84 | |
85 | static void |
86 | wmi_dell_attach(device_t parent, device_t self, void *aux) |
87 | { |
88 | struct wmi_dell_softc *sc = device_private(self); |
89 | ACPI_STATUS rv; |
90 | int e; |
91 | |
92 | sc->sc_dev = self; |
93 | sc->sc_parent = parent; |
94 | sc->sc_smpsw_valid = true; |
95 | |
96 | rv = acpi_wmi_event_register(parent, wmi_dell_notify_handler); |
97 | |
98 | if (ACPI_FAILURE(rv)) { |
99 | aprint_error(": failed to install WMI notify handler\n" ); |
100 | return; |
101 | } |
102 | |
103 | aprint_naive("\n" ); |
104 | aprint_normal(": Dell WMI mappings\n" ); |
105 | |
106 | sc->sc_smpsw[WMI_DELL_PSW_DISPLAY_CYCLE].smpsw_name = |
107 | PSWITCH_HK_DISPLAY_CYCLE; |
108 | |
109 | sc->sc_smpsw[WMI_DELL_PSW_DISPLAY_CYCLE].smpsw_type = |
110 | PSWITCH_TYPE_HOTKEY; |
111 | |
112 | e = sysmon_pswitch_register(&sc->sc_smpsw[WMI_DELL_PSW_DISPLAY_CYCLE]); |
113 | |
114 | if (e != 0) |
115 | sc->sc_smpsw_valid = false; |
116 | |
117 | (void)pmf_device_register(self, wmi_dell_suspend, wmi_dell_resume); |
118 | } |
119 | |
120 | static int |
121 | wmi_dell_detach(device_t self, int flags) |
122 | { |
123 | struct wmi_dell_softc *sc = device_private(self); |
124 | device_t parent = sc->sc_parent; |
125 | size_t i; |
126 | |
127 | (void)pmf_device_deregister(self); |
128 | (void)acpi_wmi_event_deregister(parent); |
129 | |
130 | if (sc->sc_smpsw_valid != true) |
131 | return 0; |
132 | |
133 | for (i = 0; i < __arraycount(sc->sc_smpsw); i++) |
134 | sysmon_pswitch_unregister(&sc->sc_smpsw[i]); |
135 | |
136 | return 0; |
137 | } |
138 | |
139 | static bool |
140 | wmi_dell_suspend(device_t self, const pmf_qual_t *qual) |
141 | { |
142 | struct wmi_dell_softc *sc = device_private(self); |
143 | device_t parent = sc->sc_parent; |
144 | |
145 | (void)acpi_wmi_event_deregister(parent); |
146 | |
147 | return true; |
148 | } |
149 | |
150 | static bool |
151 | wmi_dell_resume(device_t self, const pmf_qual_t *qual) |
152 | { |
153 | struct wmi_dell_softc *sc = device_private(self); |
154 | device_t parent = sc->sc_parent; |
155 | |
156 | (void)acpi_wmi_event_register(parent, wmi_dell_notify_handler); |
157 | |
158 | return true; |
159 | } |
160 | |
161 | static void |
162 | wmi_dell_notify_handler(ACPI_HANDLE hdl, uint32_t evt, void *aux) |
163 | { |
164 | struct wmi_dell_softc *sc; |
165 | device_t self = aux; |
166 | ACPI_OBJECT *obj; |
167 | ACPI_BUFFER buf; |
168 | ACPI_STATUS rv; |
169 | uint32_t val; |
170 | |
171 | buf.Pointer = NULL; |
172 | |
173 | sc = device_private(self); |
174 | rv = acpi_wmi_event_get(sc->sc_parent, evt, &buf); |
175 | |
176 | if (ACPI_FAILURE(rv)) |
177 | goto out; |
178 | |
179 | obj = buf.Pointer; |
180 | |
181 | if (obj->Type != ACPI_TYPE_BUFFER) { |
182 | rv = AE_TYPE; |
183 | goto out; |
184 | } |
185 | |
186 | val = obj->Buffer.Pointer[1] & 0xFFFF; |
187 | |
188 | switch (val) { |
189 | |
190 | case WMI_DELL_HOTKEY_BRIGHTNESS_DOWN: |
191 | pmf_event_inject(NULL, PMFE_DISPLAY_BRIGHTNESS_DOWN); |
192 | break; |
193 | |
194 | case WMI_DELL_HOTKEY_BRIGHTNESS_UP: |
195 | pmf_event_inject(NULL, PMFE_DISPLAY_BRIGHTNESS_UP); |
196 | break; |
197 | |
198 | case WMI_DELL_HOTKEY_DISPLAY_CYCLE: |
199 | |
200 | if (sc->sc_smpsw_valid != true) { |
201 | rv = AE_ABORT_METHOD; |
202 | break; |
203 | } |
204 | |
205 | sysmon_pswitch_event(&sc->sc_smpsw[WMI_DELL_PSW_DISPLAY_CYCLE], |
206 | PSWITCH_EVENT_PRESSED); |
207 | break; |
208 | |
209 | case WMI_DELL_HOTKEY_VOLUME_MUTE: |
210 | pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_TOGGLE); |
211 | break; |
212 | |
213 | case WMI_DELL_HOTKEY_VOLUME_DOWN: |
214 | pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_DOWN); |
215 | break; |
216 | |
217 | case WMI_DELL_HOTKEY_VOLUME_UP: |
218 | pmf_event_inject(NULL, PMFE_AUDIO_VOLUME_UP); |
219 | break; |
220 | |
221 | default: |
222 | aprint_debug_dev(sc->sc_dev, |
223 | "unknown key 0x%02X for event 0x%02X\n" , val, evt); |
224 | break; |
225 | } |
226 | |
227 | out: |
228 | if (buf.Pointer != NULL) |
229 | ACPI_FREE(buf.Pointer); |
230 | |
231 | if (ACPI_FAILURE(rv)) |
232 | aprint_error_dev(sc->sc_dev, "failed to get data for " |
233 | "event 0x%02X: %s\n" , evt, AcpiFormatException(rv)); |
234 | } |
235 | |
236 | MODULE(MODULE_CLASS_DRIVER, wmidell, "acpiwmi,sysmon_power" ); |
237 | |
238 | #ifdef _MODULE |
239 | #include "ioconf.c" |
240 | #endif |
241 | |
242 | static int |
243 | wmidell_modcmd(modcmd_t cmd, void *aux) |
244 | { |
245 | int rv = 0; |
246 | |
247 | switch (cmd) { |
248 | |
249 | case MODULE_CMD_INIT: |
250 | |
251 | #ifdef _MODULE |
252 | rv = config_init_component(cfdriver_ioconf_wmidell, |
253 | cfattach_ioconf_wmidell, cfdata_ioconf_wmidell); |
254 | #endif |
255 | break; |
256 | |
257 | case MODULE_CMD_FINI: |
258 | |
259 | #ifdef _MODULE |
260 | rv = config_fini_component(cfdriver_ioconf_wmidell, |
261 | cfattach_ioconf_wmidell, cfdata_ioconf_wmidell); |
262 | #endif |
263 | break; |
264 | |
265 | default: |
266 | rv = ENOTTY; |
267 | } |
268 | |
269 | return rv; |
270 | } |
271 | |