firmware/target/coldfire/iaudio/m5/backlight-m5.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.h"
  23 #include "backlight-target.h"
  24 #include "pcf50606.h"
  25 #include "lcd.h"
  26
  27 bool _backlight_init(void)
  28 {
  29     _backlight_on();
  30
  31     return true; /* Backlight always ON after boot. */
  32 }
  33
  34 void _backlight_on(void)
  35 {
  36     int level = disable_irq_save();
  37
  38     pcf50606_write(0x39, 0x07);
  39     restore_irq(level);
  40 }
  41
  42 void _backlight_off(void)
  43 {
  44     int level = disable_irq_save();
  45
  46     pcf50606_write(0x39, 0x00);
  47     restore_irq(level);
  48 }
  49
  50 void _remote_backlight_on(void)
  51 {
  52     and_l(~0x00200000, &GPIO_OUT);
  53 }
  54
  55 void _remote_backlight_off(void)
  56 {
  57     or_l(0x00200000, &GPIO_OUT);
  58 }