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

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (c) 2008 by Michael Sevakis
  11  *
  12  * Gigabeat S GPIO interrupt event descriptions
  13  *
  14  * This program is free software; you can redistribute it and/or
  15  * modify it under the terms of the GNU General Public License
  16  * as published by the Free Software Foundation; either version 2
  17  * of the License, or (at your option) any later version.
  18  *
  19  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  20  * KIND, either express or implied.
  21  *
  22  ****************************************************************************/
  23 #include "config.h"
  24 #include "system.h"
  25 #include "gpio-imx31.h"
  26
  27 /* Gigabeat S definitions for static GPIO event registration */
  28
  29 /* Describes single events for each GPIO1 pin */
  30 static const struct gpio_event gpio1_events[] =
  31 {
  32     /* mc13783 keeps the PRIINT high (no low pulse) if other unmasked
  33      * interrupts become active when clearing them or if a source being
  34      * cleared becomes active at that time. Edge-detection will not get
  35      * a rising edge in that case so use high-level sense. */
  36     [MC13783_EVENT_ID-GPIO1_EVENT_FIRST] =
  37     {
  38         .mask     = 1 << MC13783_GPIO_LINE,
  39         .sense    = GPIO_SENSE_HIGH_LEVEL,
  40         .callback = mc13783_event,
  41     }
  42 };
  43
  44 /* Describes the events attached to GPIO1 port */
  45 const struct gpio_event_list gpio1_event_list =
  46 {
  47     .ints_priority = 7,
  48     .count         = ARRAYLEN(gpio1_events),
  49     .events        = gpio1_events,
  50 };