1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/* $OpenBSD: acpicbkbd.c,v 1.2 2016/07/27 02:26:26 jcs Exp $ */
/*
* Copyright (c) 2016 joshua stein <jcs@openbsd.org>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <dev/acpi/acpivar.h>
#include <dev/acpi/amltypes.h>
#include <dev/acpi/dsdt.h>
#include <dev/wscons/wsconsio.h>
/* #define ACPICBKBD_DEBUG */
#ifdef ACPICBKBD_DEBUG
#define DPRINTF(x) printf x
#else
#define DPRINTF(x)
#endif
#define ACPICBKBD_MAX_BACKLIGHT 100
struct acpicbkbd_softc {
struct device sc_dev;
struct acpi_softc *sc_acpi;
struct aml_node *sc_devnode;
uint64_t sc_backlight;
};
int acpicbkbd_match(struct device *, void *, void *);
void acpicbkbd_attach(struct device *, struct device *, void *);
int acpicbkbd_activate(struct device *, int);
int acpicbkbd_get_backlight(struct wskbd_backlight *);
int acpicbkbd_set_backlight(struct wskbd_backlight *);
void acpicbkbd_write_backlight(void *, int);
extern int (*wskbd_get_backlight)(struct wskbd_backlight *);
extern int (*wskbd_set_backlight)(struct wskbd_backlight *);
struct cfattach acpicbkbd_ca = {
sizeof(struct acpicbkbd_softc),
acpicbkbd_match,
acpicbkbd_attach,
NULL,
acpicbkbd_activate,
};
struct cfdriver acpicbkbd_cd = {
NULL, "acpicbkbd", DV_DULL
};
const char *acpicbkbd_hids[] = {
"GOOG0002",
NULL
};
int
acpicbkbd_match(struct device *parent, void *match, void *aux)
{
struct acpi_attach_args *aaa = aux;
struct cfdata *cf = match;
return acpi_matchhids(aaa, acpicbkbd_hids, cf->cf_driver->cd_name);
}
void
acpicbkbd_attach(struct device *parent, struct device *self, void *aux)
{
struct acpicbkbd_softc *sc = (struct acpicbkbd_softc *)self;
struct acpi_attach_args *aa = aux;
sc->sc_acpi = (struct acpi_softc *)parent;
sc->sc_devnode = aa->aaa_node;
printf(": %s", sc->sc_devnode->name);
if (aml_evalinteger(sc->sc_acpi, sc->sc_devnode, "KBQC",
0, NULL, &sc->sc_backlight) == 0) {
wskbd_get_backlight = acpicbkbd_get_backlight;
wskbd_set_backlight = acpicbkbd_set_backlight;
} else
printf(", no backlight control");
printf("\n");
}
int
acpicbkbd_activate(struct device *self, int act)
{
struct acpicbkbd_softc *sc = (struct acpicbkbd_softc *)self;
switch (act) {
case DVACT_WAKEUP:
/* restore backlight to pre-suspend value */
acpi_addtask(sc->sc_acpi, acpicbkbd_write_backlight, sc, 0);
break;
}
return (0);
}
int
acpicbkbd_get_backlight(struct wskbd_backlight *kbl)
{
struct acpicbkbd_softc *sc = acpicbkbd_cd.cd_devs[0];
KASSERT(sc != NULL);
kbl->min = 0;
kbl->max = ACPICBKBD_MAX_BACKLIGHT;
kbl->curval = sc->sc_backlight;
return 0;
}
int
acpicbkbd_set_backlight(struct wskbd_backlight *kbl)
{
struct acpicbkbd_softc *sc = acpicbkbd_cd.cd_devs[0];
KASSERT(sc != NULL);
if (kbl->curval > ACPICBKBD_MAX_BACKLIGHT)
return EINVAL;
sc->sc_backlight = kbl->curval;
acpi_addtask(sc->sc_acpi, acpicbkbd_write_backlight, sc, 0);
acpi_wakeup(sc->sc_acpi);
return 0;
}
void
acpicbkbd_write_backlight(void *arg0, int arg1)
{
struct acpicbkbd_softc *sc = arg0;
struct aml_value arg;
DPRINTF(("%s: writing backlight of %lld\n", sc->sc_dev.dv_xname,
sc->sc_backlight));
memset(&arg, 0, sizeof(arg));
arg.type = AML_OBJTYPE_INTEGER;
arg.v_integer = sc->sc_backlight;
aml_evalname(sc->sc_acpi, sc->sc_devnode, "KBCM", 1, &arg, NULL);
}
|
