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author | Rob Purchase <shotofadds@rockbox.org> | 2008-04-04 20:55:58 +0000 |
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committer | Rob Purchase <shotofadds@rockbox.org> | 2008-04-04 20:55:58 +0000 |
commit | 91202e180497bc15cfb77d528fb04efe91dd15bf (patch) | |
tree | d8ce4c3ce2ca0028fa1cc93f59579923f530bcb0 /firmware/target/arm/tcc780x/cowond2/backlight-cowond2.c | |
parent | 9b691d335ae4bf3d666d7991fedf56731d8f533e (diff) | |
download | rockbox-91202e180497bc15cfb77d528fb04efe91dd15bf.tar.gz rockbox-91202e180497bc15cfb77d528fb04efe91dd15bf.zip |
D2: Adjustable backlight brightness (sometimes fails when boosted, suggests I2C timing needs adjustment). Tweak lcd_enable() to behave more like other targets.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@16967 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/target/arm/tcc780x/cowond2/backlight-cowond2.c')
-rw-r--r-- | firmware/target/arm/tcc780x/cowond2/backlight-cowond2.c | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/firmware/target/arm/tcc780x/cowond2/backlight-cowond2.c b/firmware/target/arm/tcc780x/cowond2/backlight-cowond2.c new file mode 100644 index 0000000000..07286bdd09 --- /dev/null +++ b/firmware/target/arm/tcc780x/cowond2/backlight-cowond2.c | |||
@@ -0,0 +1,56 @@ | |||
1 | /*************************************************************************** | ||
2 | * __________ __ ___. | ||
3 | * Open \______ \ ____ ____ | | _\_ |__ _______ ___ | ||
4 | * Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ / | ||
5 | * Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < < | ||
6 | * Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \ | ||
7 | * \/ \/ \/ \/ \/ | ||
8 | * $Id$ | ||
9 | * | ||
10 | * Copyright (C) 2008 by Rob Purchase | ||
11 | * | ||
12 | * All files in this archive are subject to the GNU General Public License. | ||
13 | * See the file COPYING in the source tree root for full license agreement. | ||
14 | * | ||
15 | * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | ||
16 | * KIND, either express or implied. | ||
17 | * | ||
18 | ****************************************************************************/ | ||
19 | #include "backlight-target.h" | ||
20 | #include "system.h" | ||
21 | #include "backlight.h" | ||
22 | #include "pcf50606.h" | ||
23 | #include "tcc780x.h" | ||
24 | |||
25 | static unsigned short backlight_brightness = DEFAULT_BRIGHTNESS_SETTING; | ||
26 | |||
27 | int _backlight_init(void) | ||
28 | { | ||
29 | _backlight_set_brightness(DEFAULT_BRIGHTNESS_SETTING); | ||
30 | return true; | ||
31 | } | ||
32 | |||
33 | void _backlight_set_brightness(int brightness) | ||
34 | { | ||
35 | backlight_brightness = brightness; | ||
36 | |||
37 | int level = disable_irq_save(); | ||
38 | pcf50606_write(PCF5060X_PWMC1, 0xe1 | (14-backlight_brightness)<<1); | ||
39 | pcf50606_write(PCF5060X_GPOC1, 0x3); | ||
40 | restore_irq(level); | ||
41 | |||
42 | if (brightness > 0) | ||
43 | _backlight_on(); | ||
44 | else | ||
45 | _backlight_off(); | ||
46 | } | ||
47 | |||
48 | void _backlight_on(void) | ||
49 | { | ||
50 | GPIOA_SET = (1<<6); | ||
51 | } | ||
52 | |||
53 | void _backlight_off(void) | ||
54 | { | ||
55 | GPIOA_CLEAR = (1<<6); | ||
56 | } | ||