1 | /* $NetBSD: acpi_button.c,v 1.42 2015/04/23 23:23:00 pgoyette Exp $ */ |
2 | |
3 | /* |
4 | * Copyright 2001, 2003 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 Button driver. |
40 | */ |
41 | |
42 | #include <sys/cdefs.h> |
43 | __KERNEL_RCSID(0, "$NetBSD: acpi_button.c,v 1.42 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 | #include <dev/acpi/acpi_wakedev.h> |
53 | |
54 | #define _COMPONENT ACPI_BUTTON_COMPONENT |
55 | ACPI_MODULE_NAME ("acpi_button" ) |
56 | |
57 | #define ACPI_NOTIFY_BUTTON 0x80 |
58 | |
59 | struct acpibut_softc { |
60 | struct acpi_devnode *sc_node; |
61 | struct sysmon_pswitch sc_smpsw; |
62 | }; |
63 | |
64 | static const char * const power_button_hid[] = { |
65 | "PNP0C0C" , |
66 | NULL |
67 | }; |
68 | |
69 | static const char * const sleep_button_hid[] = { |
70 | "PNP0C0E" , |
71 | NULL |
72 | }; |
73 | |
74 | static int acpibut_match(device_t, cfdata_t, void *); |
75 | static void acpibut_attach(device_t, device_t, void *); |
76 | static int acpibut_detach(device_t, int); |
77 | static void acpibut_pressed_event(void *); |
78 | static void acpibut_notify_handler(ACPI_HANDLE, uint32_t, void *); |
79 | |
80 | CFATTACH_DECL_NEW(acpibut, sizeof(struct acpibut_softc), |
81 | acpibut_match, acpibut_attach, acpibut_detach, NULL); |
82 | |
83 | /* |
84 | * acpibut_match: |
85 | * |
86 | * Autoconfiguration `match' routine. |
87 | */ |
88 | static int |
89 | acpibut_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 | if (acpi_match_hid(aa->aa_node->ad_devinfo, power_button_hid)) |
97 | return 1; |
98 | |
99 | if (acpi_match_hid(aa->aa_node->ad_devinfo, sleep_button_hid)) |
100 | return 1; |
101 | |
102 | return 0; |
103 | } |
104 | |
105 | /* |
106 | * acpibut_attach: |
107 | * |
108 | * Autoconfiguration `attach' routine. |
109 | */ |
110 | static void |
111 | acpibut_attach(device_t parent, device_t self, void *aux) |
112 | { |
113 | struct acpibut_softc *sc = device_private(self); |
114 | struct acpi_attach_args *aa = aux; |
115 | struct acpi_wakedev *aw; |
116 | const char *desc; |
117 | |
118 | sc->sc_smpsw.smpsw_name = device_xname(self); |
119 | |
120 | if (acpi_match_hid(aa->aa_node->ad_devinfo, power_button_hid)) { |
121 | sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_POWER; |
122 | desc = "Power" ; |
123 | } else if (acpi_match_hid(aa->aa_node->ad_devinfo, sleep_button_hid)) { |
124 | sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_SLEEP; |
125 | desc = "Sleep" ; |
126 | } else |
127 | panic("%s: impossible" , __func__); |
128 | |
129 | aprint_naive(": ACPI %s Button\n" , desc); |
130 | aprint_normal(": ACPI %s Button\n" , desc); |
131 | |
132 | sc->sc_node = aa->aa_node; |
133 | aw = sc->sc_node->ad_wakedev; |
134 | |
135 | /* |
136 | * This GPE should always be enabled. |
137 | */ |
138 | if (aw != NULL) |
139 | (void)AcpiEnableGpe(aw->aw_handle, aw->aw_number); |
140 | |
141 | (void)pmf_device_register(self, NULL, NULL); |
142 | (void)sysmon_pswitch_register(&sc->sc_smpsw); |
143 | (void)acpi_register_notify(sc->sc_node, acpibut_notify_handler); |
144 | } |
145 | |
146 | /* |
147 | * acpibut_detach: |
148 | * |
149 | * Autoconfiguration `detach' routine. |
150 | */ |
151 | static int |
152 | acpibut_detach(device_t self, int flags) |
153 | { |
154 | struct acpibut_softc *sc = device_private(self); |
155 | |
156 | pmf_device_deregister(self); |
157 | acpi_deregister_notify(sc->sc_node); |
158 | sysmon_pswitch_unregister(&sc->sc_smpsw); |
159 | |
160 | return 0; |
161 | } |
162 | |
163 | /* |
164 | * acpibut_pressed_event: |
165 | * |
166 | * Deal with a button being pressed. |
167 | */ |
168 | static void |
169 | acpibut_pressed_event(void *arg) |
170 | { |
171 | device_t dv = arg; |
172 | struct acpibut_softc *sc = device_private(dv); |
173 | |
174 | aprint_debug_dev(dv, "button pressed\n" ); |
175 | sysmon_pswitch_event(&sc->sc_smpsw, PSWITCH_EVENT_PRESSED); |
176 | } |
177 | |
178 | /* |
179 | * acpibut_notify_handler: |
180 | * |
181 | * Callback from ACPI interrupt handler to notify us of an event. |
182 | */ |
183 | static void |
184 | acpibut_notify_handler(ACPI_HANDLE handle, uint32_t notify, void *context) |
185 | { |
186 | static const int handler = OSL_NOTIFY_HANDLER; |
187 | device_t dv = context; |
188 | |
189 | switch (notify) { |
190 | |
191 | case ACPI_NOTIFY_BUTTON: |
192 | (void)AcpiOsExecute(handler, acpibut_pressed_event, dv); |
193 | break; |
194 | |
195 | case ACPI_NOTIFY_DEVICE_WAKE: |
196 | break; |
197 | |
198 | default: |
199 | aprint_debug_dev(dv, "unknown notify 0x%02X\n" , notify); |
200 | } |
201 | } |
202 | |
203 | MODULE(MODULE_CLASS_DRIVER, acpibut, "sysmon_power" ); |
204 | |
205 | #ifdef _MODULE |
206 | #include "ioconf.c" |
207 | #endif |
208 | |
209 | static int |
210 | acpibut_modcmd(modcmd_t cmd, void *aux) |
211 | { |
212 | int rv = 0; |
213 | |
214 | switch (cmd) { |
215 | |
216 | case MODULE_CMD_INIT: |
217 | |
218 | #ifdef _MODULE |
219 | rv = config_init_component(cfdriver_ioconf_acpibut, |
220 | cfattach_ioconf_acpibut, cfdata_ioconf_acpibut); |
221 | #endif |
222 | break; |
223 | |
224 | case MODULE_CMD_FINI: |
225 | |
226 | #ifdef _MODULE |
227 | rv = config_fini_component(cfdriver_ioconf_acpibut, |
228 | cfattach_ioconf_acpibut, cfdata_ioconf_acpibut); |
229 | #endif |
230 | break; |
231 | |
232 | default: |
233 | rv = ENOTTY; |
234 | } |
235 | |
236 | return rv; |
237 | } |
238 | |