firmware/target/arm/sandisk/backlight-c200_e200.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2006 by Barry Wardell
  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.h"
  27 #include "as3514.h"
  28
  29 void _backlight_set_brightness(int brightness)
  30 {
  31     ascodec_write(AS3514_DCDC15, brightness);
  32 }
  33
  34 void _backlight_on(void)
  35 {
  36 #ifdef HAVE_LCD_ENABLE
  37     lcd_enable(true); /* power on lcd + visible display */
  38 #endif
  39 #if (CONFIG_BACKLIGHT_FADING != BACKLIGHT_FADING_SW_SETTING) /* in bootloader/sim */
  40     /* if we set the brightness to the settings value, then fading up
  41      * is glitchy */
  42     _backlight_set_brightness(backlight_brightness);
  43 #endif
  44 }
  45
  46 void _backlight_off(void)
  47 {
  48     _backlight_set_brightness(0);
  49 #ifdef HAVE_LCD_ENABLE
  50     lcd_enable(false); /* power off visible display */
  51 #endif
  52 }
  53
  54 void _buttonlight_on(void)
  55 {
  56     GPIO_SET_BITWISE(GPIOG_OUTPUT_VAL, 0x80);
  57 #ifdef SANSA_C200
  58     GPIO_SET_BITWISE(GPIOB_OUTPUT_VAL, 0x10); /* The "menu" backlight */
  59 #endif
  60 }
  61
  62 void _buttonlight_off(void)
  63 {
  64     GPIO_CLEAR_BITWISE(GPIOG_OUTPUT_VAL, 0x80);
  65 #ifdef SANSA_C200
  66     GPIO_CLEAR_BITWISE(GPIOB_OUTPUT_VAL, 0x10); /* The "menu" backlight */
  67 #endif
  68 }