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Diffstat (limited to 'firmware/target/coldfire/mpio/hd200/backlight-hd200.c')
-rw-r--r--firmware/target/coldfire/mpio/hd200/backlight-hd200.c86
1 files changed, 86 insertions, 0 deletions
diff --git a/firmware/target/coldfire/mpio/hd200/backlight-hd200.c b/firmware/target/coldfire/mpio/hd200/backlight-hd200.c
new file mode 100644
index 0000000000..783376c91e
--- /dev/null
+++ b/firmware/target/coldfire/mpio/hd200/backlight-hd200.c
@@ -0,0 +1,86 @@
1/***************************************************************************
2 * __________ __ ___.
3 * Open \______ \ ____ ____ | | _\_ |__ _______ ___
4 * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
5 * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
6 * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
7 * \/ \/ \/ \/ \/
8 * $Id:$
9 *
10 * Copyright (C) 2010 Marcin Bukat
11 *
12 * This program is free software; you can redistribute it and/or
13 * modify it under the terms of the GNU General Public License
14 * as published by the Free Software Foundation; either version 2
15 * of the License, or (at your option) any later version.
16 *
17 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
18 * KIND, either express or implied.
19 *
20 ****************************************************************************/
21
22#include "config.h"
23#include "cpu.h"
24#include "kernel.h"
25#include "system.h"
26#include "backlight.h"
27#include "backlight-target.h"
28#include "lcd.h"
29
30static bool _backlight_on = false;
31static int _brightness = DEFAULT_BRIGHTNESS_SETTING;
32
33/* Returns the current state of the backlight (true=ON, false=OFF). */
34bool _backlight_init(void)
35{
36 and_l(~(1<<28),&GPIO_OUT);
37 or_l((1<<28),&GPIO_FUNCTION);
38 or_l((1<<28),&GPIO_ENABLE);
39 return true;
40}
41
42void _backlight_hw_on(void)
43{
44
45 if (_backlight_on)
46 return;
47
48 _backlight_set_brightness(_brightness);
49 _backlight_on = true;
50
51}
52
53void _backlight_hw_off(void)
54{
55 /* GPIO28 low */
56 and_l(~(1<<28),&GPIO_OUT);
57 _backlight_on = false;
58}
59
60void _backlight_set_brightness(int val)
61{
62 unsigned char i;
63
64 and_l(~(1<<28),&GPIO_OUT);
65 sleep(4);
66
67 for (i=0;i<val;i++)
68 {
69 or_l((1<<28),&GPIO_OUT);
70 and_l(~(1<<28),&GPIO_OUT);
71 }
72
73 or_l((1<<28),&GPIO_OUT);
74
75 _brightness = val;
76}
77
78void _remote_backlight_on(void)
79{
80 /* I don't have remote to play with */
81}
82
83void _remote_backlight_off(void)
84{
85 /* I don't have remote to play with */
86}