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

/***************************************************************************
 *             __________               __   ___.
 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
 *                     \/            \/     \/    \/            \/
 * $Id$
 *
 * Copyright (c) 2008 by Michael Sevakis
 *
 * Gigabeat S GPIO interrupt event descriptions
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
 * KIND, either express or implied.
 *
 ****************************************************************************/
#include "config.h"
#include "system.h"
#include "avic-imx31.h"
#include "gpio-imx31.h"

/* Gigabeat S definitions for static GPIO event registration */

/* Describes single events for each GPIO1 pin */
const struct gpio_event gpio1_events[] =
{
    /* mc13783 keeps the PRIINT high (no low pulse) if other unmasked
     * interrupts become active when clearing them or if a source being
     * cleared becomes active at that time. Edge-detection will not get
     * a rising edge in that case so use high-level sense. */
    [MC13783_EVENT_ID-GPIO1_EVENT_FIRST] =
    {
        .mask     = 1 << MC13783_GPIO_LINE,
        .sense    = GPIO_SENSE_HIGH_LEVEL,
        .callback = mc13783_event,
    },
    /* Generates a 5ms low pulse on the line - detect the falling edge */
    [SI4700_STC_RDS_EVENT_ID] =
    {
        .mask     = 1 << SI4700_GPIO_STC_RDS_LINE,
        .sense    = GPIO_SENSE_FALLING,
        .callback = si4700_stc_rds_event,
    },
};