firmware/target/arm/imx31/gigabeat-s/backlight-imx31.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2006 by Linus Nielsen Feltzing
  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 "config.h"
  20 #include "cpu.h"
  21 #include "system.h"
  22 #include "backlight-target.h"
  23 #include "backlight.h"
  24 #include "lcd.h"
  25 #include "power.h"
  26 #include "spi-imx31.h"
  27 #include "debug.h"
  28
  29 bool _backlight_init(void)
  30 {
  31     return true;
  32 }
  33
  34 void _backlight_on(void)
  35 {
  36     // This relies on the SPI interface being initialised already
  37     spi_send(51, 1);
  38 }
  39
  40 void _backlight_off(void)
  41 {
  42     // This relies on the SPI interface being initialised already
  43     spi_send(51, 0);
  44 }
  45
  46 /* Assumes that the backlight has been initialized */
  47 void _backlight_set_brightness(int brightness)
  48 {
  49     (void)brightness;
  50 }
  51