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
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
/*
* Apple iMac Backlight control
*
* Copyright (C) 2007 Martin Szulecki <opensuse@sukimashita.com>
* Copyright (C) 2006 Nicolas Boichat <nicolas@boichat.ch>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/io.h>
#include <glib/gmain.h>
#include <dbus/dbus-glib.h>
#include <dbus/dbus-glib-lowlevel.h>
#include "libhal/libhal.h"
#include "../../logger.h"
#include "../../util_helper_priv.h"
static LibHalContext *halctx = NULL;
static void
backlight_set(int value)
{
outb(0x04 | (value << 4), 0xB3);
outb(0xBF, 0xB2);
}
static int
backlight_get(void)
{
outb(0x03, 0xB3);
outb(0xBF, 0xB2);
return inb(0xB3) >> 4;
}
#define BACKLIGHT_OBJECT \
"/org/freedesktop/Hal/devices/imac_backlight"
#define BACKLIGHT_IFACE \
"org.freedesktop.Hal.Device.LaptopPanel"
#define INTERFACE_DESCRIPTION \
" <method name=\"SetBrightness\">\n" \
" <arg name=\"brightness_value\" direction=\"in\" type=\"i\"/>\n" \
" <arg name=\"return_code\" direction=\"out\" type=\"i\"/>\n" \
" </method>\n" \
" <method name=\"GetBrightness\">\n" \
" <arg name=\"brightness_value\" direction=\"out\" type=\"i\"/>\n" \
" </method>\n"
static DBusHandlerResult
filter_function (DBusConnection * connection, DBusMessage * message, void *userdata)
{
DBusMessage *reply;
DBusError err;
int level;
int ret;
if (!check_priv (halctx, connection, message, dbus_message_get_path (message), "org.freedesktop.hal.power-management.lcd-panel")) {
return DBUS_HANDLER_RESULT_HANDLED;
}
reply = NULL;
ret = 0;
dbus_error_init (&err);
if (dbus_message_is_method_call (message, BACKLIGHT_IFACE, "SetBrightness")) {
if (dbus_message_get_args (message, &err, DBUS_TYPE_INT32,
&level, DBUS_TYPE_INVALID)) {
if (level < 0 || level > 15) {
reply = dbus_message_new_error (message,
"org.freedesktop.Hal.Device.LaptopPanel.Invalid",
"Brightness has to be between 0 and 15!");
} else {
backlight_set (level);
if ((reply = dbus_message_new_method_return (message)))
dbus_message_append_args (reply, DBUS_TYPE_INT32,
&ret, DBUS_TYPE_INVALID);
}
}
} else if (dbus_message_is_method_call (message, BACKLIGHT_IFACE, "GetBrightness")) {
if (dbus_message_get_args (message, &err, DBUS_TYPE_INVALID)) {
level = backlight_get();
if (level < 0)
level = 0;
if (level > 15)
level = 15;
if ((reply = dbus_message_new_method_return (message)))
dbus_message_append_args (reply, DBUS_TYPE_INT32,
&level, DBUS_TYPE_INVALID);
}
}
if (reply) {
dbus_connection_send (connection, reply, NULL);
return DBUS_HANDLER_RESULT_HANDLED;
}
LIBHAL_FREE_DBUS_ERROR (&err);
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
}
int
main (int argc, char **argv)
{
DBusConnection *conn;
GMainLoop *main_loop;
const char *udi;
DBusError err;
int retval;
setup_logger ();
udi = getenv ("UDI");
HAL_DEBUG (("udi=%s", udi));
if (udi == NULL)
{
HAL_ERROR (("No device specified"));
return -2;
}
dbus_error_init (&err);
if ((halctx = libhal_ctx_init_direct (&err)) == NULL)
{
HAL_ERROR (("Cannot connect to hald"));
retval = -3;
goto out;
}
if (!libhal_device_addon_is_ready (halctx, udi, &err))
{
retval = -4;
goto out;
}
/* Allow access to ports 0xB2 and 0xB3 */
if (ioperm(0xB2, 2, 1) < 0)
{
HAL_ERROR (("ioperm failed (you should be root)."));
exit(1);
}
conn = libhal_ctx_get_dbus_connection (halctx);
dbus_connection_setup_with_g_main (conn, NULL);
dbus_connection_add_filter (conn, filter_function, NULL, NULL);
if (!libhal_device_claim_interface (halctx, BACKLIGHT_OBJECT,
BACKLIGHT_IFACE, INTERFACE_DESCRIPTION, &err))
{
HAL_ERROR (("Cannot claim interface 'org.freedesktop.Hal.Device.LaptopPanel'"));
retval = -4;
goto out;
}
main_loop = g_main_loop_new (NULL, FALSE);
g_main_loop_run (main_loop);
return 0;
out:
LIBHAL_FREE_DBUS_ERROR (&err);
if (halctx != NULL) {
libhal_ctx_shutdown (halctx, &err);
LIBHAL_FREE_DBUS_ERROR (&err);
libhal_ctx_free (halctx);
}
return retval;
}
|
