firmware/target/arm/tcc780x/pcm-tcc780x.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2007 by Karl Kurbjun
  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 "system.h"
  20 #include "kernel.h"
  21 #include "logf.h"
  22 #include "audio.h"
  23 #include "sound.h"
  24 #include "file.h"
  25
  26 void pcm_postinit(void)
  27 {
  28 }
  29
  30 const void * pcm_play_dma_get_peak_buffer(int *count)
  31 {
  32     (void) count;
  33     return 0;
  34 }
  35
  36 void pcm_play_dma_init(void)
  37 {
  38 }
  39
  40 void pcm_apply_settings(void)
  41 {
  42 }
  43
  44 void pcm_set_frequency(unsigned int frequency)
  45 {
  46     (void) frequency;
  47 }
  48
  49 void pcm_play_dma_start(const void *addr, size_t size)
  50 {
  51     (void) addr;
  52     (void) size;
  53 }
  54
  55 void pcm_play_dma_stop(void)
  56 {
  57 }
  58
  59 void pcm_play_lock(void)
  60 {
  61 }
  62
  63 void pcm_play_unlock(void)
  64 {
  65 }
  66
  67 void pcm_play_dma_pause(bool pause)
  68 {
  69     (void) pause;
  70 }
  71
  72 size_t pcm_get_bytes_waiting(void)
  73 {
  74     return 0;
  75 }
  76
  77 void fiq_handler(void)
  78 {
  79     /* Clear FIQ status */
  80     CREQ = DAI_TX_IRQ_MASK | DAI_RX_IRQ_MASK;
  81
  82     /* Return from FIQ */
  83     asm volatile (
  84         "subs   pc, lr, #4   \r\n"
  85     );
  86 }