firmware/target/arm/as3525/sansa-fuzev2/backlight-fuzev2.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2010 by Thomas Martitz
  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 #include "config.h"
  22 #include "backlight-target.h"
  23 #include "system.h"
  24 #include "lcd.h"
  25 #include "backlight.h"
  26 #include "ascodec-target.h"
  27 #include "as3514.h"
  28
  29 int buttonlight_is_on = 0;
  30
  31 void _backlight_set_brightness(int brightness)
  32 {
  33     ascodec_write_pmu(AS3543_BACKLIGHT, 2, brightness * 10);
  34 }
  35
  36 bool _backlight_init(void)
  37 {
  38     GPIOB_DIR |= 1<<5; /* for buttonlight, stuff below seems to be needed
  39                           for buttonlight as well*/
  40
  41     ascodec_write_pmu(AS3543_BACKLIGHT, 1, 0x80);
  42     ascodec_write_pmu(AS3543_BACKLIGHT, 2, backlight_brightness * 10);
  43
  44     return true;
  45 }
  46
  47 void _backlight_on(void)
  48 {
  49 #ifdef HAVE_LCD_ENABLE
  50     lcd_enable(true); /* power on lcd + visible display */
  51 #endif
  52     ascodec_write_pmu(AS3543_BACKLIGHT, 1, 0x80);
  53 }
  54
  55 void _backlight_off(void)
  56 {
  57     ascodec_write_pmu(AS3543_BACKLIGHT, 1, 0x0);
  58 #ifdef HAVE_LCD_ENABLE
  59     lcd_enable(false); /* power off visible display */
  60 #endif
  61 }
  62
  63 void _buttonlight_on(void)
  64 {
  65     GPIOB_PIN(5) = (1<<5);
  66     buttonlight_is_on = 1;
  67 }
  68
  69 void _buttonlight_off(void)
  70 {
  71     GPIOB_PIN(5) = 0;
  72     buttonlight_is_on = 0;
  73 }