firmware/target/arm/tcc77x/timer-tcc77x.c

   1 /***************************************************************************
   2 *             __________               __   ___.
   3 *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4 *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5 *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6 *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7 *                     \/            \/     \/    \/            \/
   8 * $Id$
   9 *
  10 * Copyright (C) 2008 by Rob Purchase
  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
  22 #include "config.h"
  23 #include "cpu.h"
  24 #include "system.h"
  25 #include "timer.h"
  26 #include "logf.h"
  27
  28 /* Use the TC32 counter [sourced by Xin:12Mhz] for this timer, as it's the
  29    only one that allows a 32-bit counter (Timer0-5 are 16/20 bit only). */
  30
  31 bool timer_set(long cycles, bool start)
  32 {
  33     #warning function not implemented
  34
  35     (void)cycles;
  36     (void)start;
  37     return false;
  38 }
  39
  40 bool timer_start(void)
  41 {
  42     #warning function not implemented
  43
  44     return false;
  45 }
  46
  47 void timer_stop(void)
  48 {
  49     #warning function not implemented
  50 }
  51
  52
  53 /* Timer interrupt processing - all timers (inc. tick) have a single IRQ */
  54 void TIMER(void)
  55 {
  56     if (TIREQ & TF0)    /* Timer0 reached ref value */
  57     {
  58         /* Run through the list of tick tasks */
  59         call_tick_tasks();
  60
  61         /* reset Timer 0 IRQ & ref flags */
  62         TIREQ |= TI0 | TF0;
  63     }
  64
  65     if (TC32IRQ & (1<<3))    /* end of TC32 prescale */
  66     {
  67         /* dispatch timer */
  68     }
  69 }