1 /* $NetBSD: acpi_lid.c,v 1.44 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 Lid Switch driver.
40 */
41
42 #include <sys/cdefs.h>
43 __KERNEL_RCSID(0, "$NetBSD: acpi_lid.c,v 1.44 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_LID_COMPONENT
54 ACPI_MODULE_NAME ("acpi_lid")
55
56 #define ACPI_NOTIFY_LID 0x80
57
58 struct acpilid_softc {
59 struct acpi_devnode *sc_node;
60 struct sysmon_pswitch sc_smpsw;
61 uint64_t sc_status;
62 };
63
64 static const char * const lid_hid[] = {
65 "PNP0C0D",
66 NULL
67 };
68
69 static int acpilid_match(device_t, cfdata_t, void *);
70 static void acpilid_attach(device_t, device_t, void *);
71 static int acpilid_detach(device_t, int);
72 static void acpilid_status_changed(void *);
73 static void acpilid_notify_handler(ACPI_HANDLE, uint32_t, void *);
74
75 CFATTACH_DECL_NEW(acpilid, sizeof(struct acpilid_softc),
76 acpilid_match, acpilid_attach, acpilid_detach, NULL);
77
78 /*
79 * acpilid_match:
80 *
81 * Autoconfiguration `match' routine.
82 */
83 static int
acpilid_match(device_t parent,cfdata_t match,void * aux)84 acpilid_match(device_t parent, cfdata_t match, void *aux)
85 {
86 struct acpi_attach_args *aa = aux;
87
88 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
89 return 0;
90
91 return acpi_match_hid(aa->aa_node->ad_devinfo, lid_hid);
92 }
93
94 /*
95 * acpilid_attach:
96 *
97 * Autoconfiguration `attach' routine.
98 */
99 static void
acpilid_attach(device_t parent,device_t self,void * aux)100 acpilid_attach(device_t parent, device_t self, void *aux)
101 {
102 struct acpilid_softc *sc = device_private(self);
103 struct acpi_attach_args *aa = aux;
104
105 aprint_naive(": ACPI Lid Switch\n");
106 aprint_normal(": ACPI Lid Switch\n");
107
108 sc->sc_node = aa->aa_node;
109
110 sc->sc_smpsw.smpsw_name = device_xname(self);
111 sc->sc_smpsw.smpsw_type = PSWITCH_TYPE_LID;
112
113 (void)pmf_device_register(self, NULL, NULL);
114 (void)sysmon_pswitch_register(&sc->sc_smpsw);
115 (void)acpi_register_notify(sc->sc_node, acpilid_notify_handler);
116 }
117
118 static int
acpilid_detach(device_t self,int flags)119 acpilid_detach(device_t self, int flags)
120 {
121 struct acpilid_softc *sc = device_private(self);
122
123 pmf_device_deregister(self);
124 acpi_deregister_notify(sc->sc_node);
125 sysmon_pswitch_unregister(&sc->sc_smpsw);
126
127 return 0;
128 }
129
130 /*
131 * acpilid_status_changed:
132 *
133 * Get, and possibly display, the lid status, and take action.
134 */
135 static void
acpilid_status_changed(void * arg)136 acpilid_status_changed(void *arg)
137 {
138 device_t dv = arg;
139 struct acpilid_softc *sc = device_private(dv);
140 ACPI_STATUS rv;
141
142 rv = acpi_eval_integer(sc->sc_node->ad_handle, "_LID", &sc->sc_status);
143
144 if (ACPI_FAILURE(rv))
145 return;
146
147 sysmon_pswitch_event(&sc->sc_smpsw, (sc->sc_status == 0) ?
148 PSWITCH_EVENT_PRESSED : PSWITCH_EVENT_RELEASED);
149 }
150
151 /*
152 * acpilid_notify_handler:
153 *
154 * Callback from ACPI interrupt handler to notify us of an event.
155 */
156 static void
acpilid_notify_handler(ACPI_HANDLE handle,uint32_t notify,void * context)157 acpilid_notify_handler(ACPI_HANDLE handle, uint32_t notify, void *context)
158 {
159 static const int handler = OSL_NOTIFY_HANDLER;
160 device_t dv = context;
161
162 switch (notify) {
163
164 case ACPI_NOTIFY_LID:
165 (void)AcpiOsExecute(handler, acpilid_status_changed, dv);
166 break;
167
168 case ACPI_NOTIFY_DEVICE_WAKE:
169 break;
170
171 default:
172 aprint_debug_dev(dv, "unknown notify 0x%02X\n", notify);
173 }
174 }
175
176 MODULE(MODULE_CLASS_DRIVER, acpilid, "sysmon_power");
177
178 #ifdef _MODULE
179 #include "ioconf.c"
180 #endif
181
182 static int
acpilid_modcmd(modcmd_t cmd,void * aux)183 acpilid_modcmd(modcmd_t cmd, void *aux)
184 {
185 int rv = 0;
186
187 switch (cmd) {
188
189 case MODULE_CMD_INIT:
190
191 #ifdef _MODULE
192 rv = config_init_component(cfdriver_ioconf_acpilid,
193 cfattach_ioconf_acpilid, cfdata_ioconf_acpilid);
194 #endif
195 break;
196
197 case MODULE_CMD_FINI:
198
199 #ifdef _MODULE
200 rv = config_fini_component(cfdriver_ioconf_acpilid,
201 cfattach_ioconf_acpilid, cfdata_ioconf_acpilid);
202 #endif
203 break;
204
205 default:
206 rv = ENOTTY;
207 }
208
209 return rv;
210 }
211