b9e10d9a07
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@8474 a1c6a512-1295-4272-9138-f99709370657
580 lines
13 KiB
C
580 lines
13 KiB
C
/***************************************************************************
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* __________ __ ___.
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* Open \______ \ ____ ____ | | _\_ |__ _______ ___
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* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
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* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
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* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
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* \/ \/ \/ \/ \/
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* $Id$
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*
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* Copyright (C) 2005 by Linus Nielsen Feltzing
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*
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* All files in this archive are subject to the GNU General Public License.
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* See the file COPYING in the source tree root for full license agreement.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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****************************************************************************/
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#include <stdbool.h>
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#include "config.h"
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#include "debug.h"
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#include "panic.h"
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#include <kernel.h>
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#ifndef SIMULATOR
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#include "cpu.h"
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#include "i2c.h"
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#if defined(HAVE_UDA1380)
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#include "uda1380.h"
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#elif defined(HAVE_WM8975)
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#include "wm8975.h"
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#elif defined(HAVE_TLV320)
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#include "tlv320.h"
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#endif
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#include "system.h"
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#endif
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#include "logf.h"
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#include <stdio.h>
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#include <string.h>
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#include <stdarg.h>
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#include "pcm_playback.h"
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#include "lcd.h"
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#include "button.h"
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#include "file.h"
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#include "buffer.h"
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#include "sprintf.h"
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#include "button.h"
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#include <string.h>
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#ifdef HAVE_UDA1380
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#ifdef HAVE_SPDIF_OUT
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#define EBU_DEFPARM ((7 << 12) | (3 << 8) | (1 << 5) | (5 << 2))
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#endif
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#define IIS_DEFPARM(freq) ((freq << 12) | 0x300 | 4 << 2)
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#define IIS_RESET 0x800
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static bool pcm_playing;
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static bool pcm_paused;
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static int pcm_freq = 0x6; /* 44.1 is default */
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static unsigned char *next_start IDATA_ATTR;
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static long next_size IDATA_ATTR;
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/* Set up the DMA transfer that kicks in when the audio FIFO gets empty */
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static void dma_start(const void *addr, long size)
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{
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pcm_playing = true;
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addr = (void *)((unsigned long)addr & ~3); /* Align data */
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size &= ~3; /* Size must be multiple of 4 */
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/* Reset the audio FIFO */
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#ifdef HAVE_SPDIF_OUT
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EBU1CONFIG = IIS_RESET | EBU_DEFPARM;
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#endif
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/* Set up DMA transfer */
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SAR0 = ((unsigned long)addr); /* Source address */
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DAR0 = (unsigned long)&PDOR3; /* Destination address */
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BCR0 = size; /* Bytes to transfer */
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/* Enable the FIFO and force one write to it */
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IIS2CONFIG = IIS_DEFPARM(pcm_freq);
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/* Also send the audio to S/PDIF */
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#ifdef HAVE_SPDIF_OUT
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EBU1CONFIG = EBU_DEFPARM;
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#endif
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DCR0 = DMA_INT | DMA_EEXT | DMA_CS | DMA_SINC | DMA_START;
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}
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/* Stops the DMA transfer and interrupt */
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static void dma_stop(void)
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{
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pcm_playing = false;
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DCR0 = 0;
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DSR0 = 1;
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/* Reset the FIFO */
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IIS2CONFIG = IIS_RESET | IIS_DEFPARM(pcm_freq);
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#ifdef HAVE_SPDIF_OUT
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EBU1CONFIG = IIS_RESET | EBU_DEFPARM;
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#endif
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next_start = NULL;
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next_size = 0;
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pcm_paused = false;
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}
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/*
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* This function goes directly into the DMA buffer to calculate the left and
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* right peak values. To avoid missing peaks it tries to look forward two full
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* peek periods (2/HZ sec, 100% overlap), although it's always possible that
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* the entire period will not be visible. To reduce CPU load it only looks at
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* every third sample, and this can be reduced even further if needed (even
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* every tenth sample would still be pretty accurate).
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*/
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#define PEAK_SAMPLES (44100*2/HZ) /* 44100 samples * 2 / 100 Hz tick */
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#define PEAK_STRIDE 3 /* every 3rd sample is plenty... */
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void pcm_calculate_peaks(int *left, int *right)
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{
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long samples = (BCR0 & 0xffffff) / 4;
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short *addr = (short *) (SAR0 & ~3);
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if (samples > PEAK_SAMPLES)
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samples = PEAK_SAMPLES;
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samples /= PEAK_STRIDE;
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if (left && right) {
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int left_peak = 0, right_peak = 0, value;
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while (samples--) {
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if ((value = addr [0]) > left_peak)
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left_peak = value;
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else if (-value > left_peak)
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left_peak = -value;
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if ((value = addr [PEAK_STRIDE | 1]) > right_peak)
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right_peak = value;
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else if (-value > right_peak)
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right_peak = -value;
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addr += PEAK_STRIDE * 2;
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}
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*left = left_peak;
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*right = right_peak;
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}
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else if (left || right) {
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int peak_value = 0, value;
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if (right)
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addr += (PEAK_STRIDE | 1);
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while (samples--) {
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if ((value = addr [0]) > peak_value)
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peak_value = value;
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else if (-value > peak_value)
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peak_value = -value;
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addr += PEAK_STRIDE * 2;
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}
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if (left)
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*left = peak_value;
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else
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*right = peak_value;
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}
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}
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/* sets frequency of input to DAC */
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void pcm_set_frequency(unsigned int frequency)
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{
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switch(frequency)
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{
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case 11025:
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pcm_freq = 0x4;
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uda1380_set_nsorder(3);
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break;
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case 22050:
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pcm_freq = 0x6;
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uda1380_set_nsorder(3);
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break;
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case 44100:
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default:
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pcm_freq = 0xC;
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uda1380_set_nsorder(5);
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break;
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}
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}
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/* the registered callback function to ask for more mp3 data */
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static void (*callback_for_more)(unsigned char**, long*) IDATA_ATTR = NULL;
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void pcm_play_data(void (*get_more)(unsigned char** start, long* size))
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{
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unsigned char *start;
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long size;
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callback_for_more = get_more;
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get_more((unsigned char **)&start, (long *)&size);
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get_more(&next_start, &next_size);
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dma_start(start, size);
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}
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long pcm_get_bytes_waiting(void)
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{
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return next_size + (BCR0 & 0xffffff);
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}
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void pcm_mute(bool mute)
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{
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uda1380_mute(mute);
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if (mute)
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sleep(HZ/16);
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}
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void pcm_play_stop(void)
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{
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if (pcm_playing) {
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dma_stop();
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}
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}
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void pcm_play_pause(bool play)
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{
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if (!pcm_playing)
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return ;
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if(pcm_paused && play && next_size)
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{
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logf("unpause");
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/* Reset chunk size so dma has enough data to fill the fifo. */
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/* This shouldn't be needed anymore. */
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//SAR0 = (unsigned long)next_start;
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//BCR0 = next_size;
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/* Enable the FIFO and force one write to it */
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IIS2CONFIG = IIS_DEFPARM(pcm_freq);
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#ifdef HAVE_SPDIF_OUT
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EBU1CONFIG = EBU_DEFPARM;
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#endif
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DCR0 |= DMA_EEXT | DMA_START;
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}
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else if(!pcm_paused && !play)
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{
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logf("pause");
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/* Disable DMA peripheral request. */
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DCR0 &= ~DMA_EEXT;
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IIS2CONFIG = IIS_RESET | IIS_DEFPARM(pcm_freq);
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#ifdef HAVE_SPDIF_OUT
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EBU1CONFIG = IIS_RESET | EBU_DEFPARM;
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#endif
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}
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pcm_paused = !play;
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}
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bool pcm_is_paused(void)
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{
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return pcm_paused;
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}
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bool pcm_is_playing(void)
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{
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return pcm_playing;
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}
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/* DMA0 Interrupt is called when the DMA has finished transfering a chunk */
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void DMA0(void) __attribute__ ((interrupt_handler, section(".icode")));
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void DMA0(void)
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{
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int res = DSR0;
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DSR0 = 1; /* Clear interrupt */
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DCR0 &= ~DMA_EEXT;
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/* Stop on error */
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if(res & 0x70)
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{
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dma_stop();
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logf("DMA Error:0x%04x", res);
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}
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else
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{
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if(next_size)
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{
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SAR0 = (unsigned long)next_start; /* Source address */
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BCR0 = next_size; /* Bytes to transfer */
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DCR0 |= DMA_EEXT;
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if (callback_for_more)
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callback_for_more(&next_start, &next_size);
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}
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else
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{
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/* Finished playing */
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dma_stop();
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logf("DMA No Data:0x%04x", res);
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}
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}
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IPR |= (1<<14); /* Clear pending interrupt request */
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}
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void pcm_init(void)
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{
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pcm_playing = false;
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pcm_paused = false;
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MPARK = 0x81; /* PARK[1,0]=10 + BCR24BIT */
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DIVR0 = 54; /* DMA0 is mapped into vector 54 in system.c */
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DMAROUTE = (DMAROUTE & 0xffffff00) | DMA0_REQ_AUDIO_1;
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DMACONFIG = 1; /* DMA0Req = PDOR3 */
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/* Reset the audio FIFO */
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IIS2CONFIG = IIS_RESET;
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/* Enable interrupt at level 7, priority 0 */
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ICR6 = 0x1c;
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IMR &= ~(1<<14); /* bit 14 is DMA0 */
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pcm_set_frequency(44100);
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/* Prevent pops (resets DAC to zero point) */
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IIS2CONFIG = IIS_DEFPARM(pcm_freq) | IIS_RESET;
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#if defined(HAVE_UDA1380)
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/* Initialize default register values. */
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uda1380_init();
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/* Sleep a while so the power can stabilize (especially a long
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delay is needed for the line out connector). */
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sleep(HZ);
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/* Power on FSDAC and HP amp. */
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uda1380_enable_output(true);
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/* Unmute the master channel (DAC should be at zero point now). */
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uda1380_mute(false);
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#elif defined(HAVE_TLV320)
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tlv320_init();
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tlv320_enable_output(true);
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sleep(HZ/4);
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tlv320_mute(false);
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#endif
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/* Call dma_stop to initialize everything. */
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dma_stop();
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}
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#elif defined(HAVE_WM8975)
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/* We need to unify this code with the uda1380 code as much as possible, but
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we will keep it separate during early development.
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*/
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static bool pcm_playing;
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static bool pcm_paused;
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static int pcm_freq = 0x6; /* 44.1 is default */
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/* the registered callback function to ask for more mp3 data */
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static void (*callback_for_more)(unsigned char**, long*) = NULL;
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static unsigned short *p IBSS_ATTR;
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static long size IBSS_ATTR;
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/* Stops the DMA transfer and interrupt */
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static void dma_stop(void)
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{
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pcm_playing = false;
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p = NULL;
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size = 0;
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callback_for_more = NULL;
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pcm_paused = false;
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/* Disable playback FIFO */
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IISCONFIG &= ~0x20000000;
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// TODO: ??? disable_fiq();
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}
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void pcm_init(void)
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{
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pcm_playing = false;
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pcm_paused = false;
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/* Initialize default register values. */
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wm8975_init();
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/* The uda1380 needs a sleep(HZ) here - do we need one? */
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/* Power on */
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wm8975_enable_output(true);
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/* Unmute the master channel (DAC should be at zero point now). */
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wm8975_mute(false);
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/* Call dma_stop to initialize everything. */
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dma_stop();
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}
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void pcm_set_frequency(unsigned int frequency)
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{
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(void)frequency;
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pcm_freq=frequency;
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}
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void fiq(void) ICODE_ATTR;
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void fiq(void)
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{
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/* Clear interrupt */
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IISCONFIG &= ~0x2;
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if ((size==0) && (callback_for_more)) {
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callback_for_more((unsigned char **)&p, (long *)&size);
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}
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while (size > 0) {
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if (((inl(0x7000280c) & 0x3f0000) >> 16) < 2) {
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/* Enable interrupt */
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IISCONFIG |= 0x2;
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return;
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}
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IISFIFO_WR = (*(p++))<<16;
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IISFIFO_WR = (*(p++))<<16;
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size-=4;
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if ((size==0) && (callback_for_more)) {
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callback_for_more((unsigned char **)&p, (long *)&size);
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}
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}
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}
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void pcm_play_data(void (*get_more)(unsigned char** start, long* size))
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{
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int free_count;
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callback_for_more = get_more;
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if (size > 0) { return; }
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get_more((unsigned char **)&p, (long *)&size);
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/* setup I2S interrupt for FIQ */
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outl(inl(0x6000402c) | I2S_MASK, 0x6000402c);
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outl(I2S_MASK, 0x60004024);
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enable_fiq(); /* Clear the FIQ disable bit in cpsr_c */
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IISCONFIG |= 0x20000000; /* Enable playback FIFO */
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/* Fill the FIFO */
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while (size > 0) {
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free_count = (inl(0x7000280c) & 0x3f0000) >> 16;
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if (free_count < 2) {
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/* Enable interrupt */
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IISCONFIG |= 0x2;
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return;
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}
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IISFIFO_WR = (*(p++))<<16;
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IISFIFO_WR = (*(p++))<<16;
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size-=4;
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if ((size==0) && (get_more)) {
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get_more((unsigned char **)&p, (long *)&size);
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}
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}
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}
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void pcm_play_stop(void)
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{
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if (pcm_playing) {
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dma_stop();
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}
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}
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void pcm_mute(bool mute)
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{
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(void)mute;
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}
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void pcm_play_pause(bool play)
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{
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if(pcm_paused && play && size)
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{
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logf("unpause");
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/* We need to enable DMA here */
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}
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else if(!pcm_paused && !play)
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{
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logf("pause");
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/* We need to disable DMA here */
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}
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pcm_paused = !play;
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}
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bool pcm_is_paused(void)
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{
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return pcm_paused;
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}
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bool pcm_is_playing(void)
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{
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return pcm_playing;
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}
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void pcm_calculate_peaks(int *left, int *right)
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{
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*left=0;
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*right=0;
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}
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long pcm_get_bytes_waiting(void)
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{
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return size;
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}
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#elif CONFIG_CPU == PNX0101
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/* TODO: Implement for iFP7xx
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For now, just implement some dummy functions.
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*/
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void pcm_init(void)
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{
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}
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void pcm_set_frequency(unsigned int frequency)
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{
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(void)frequency;
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}
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void pcm_play_data(void (*get_more)(unsigned char** start, long* size))
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{
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(void)get_more;
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}
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void pcm_play_stop(void)
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{
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}
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void pcm_mute(bool mute)
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{
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(void)mute;
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}
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void pcm_play_pause(bool play)
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{
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(void)play;
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}
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bool pcm_is_paused(void)
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{
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return false;
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}
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bool pcm_is_playing(void)
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{
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return false;
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}
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void pcm_calculate_peaks(int *left, int *right)
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{
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(void)left;
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(void)right;
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}
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long pcm_get_bytes_waiting(void)
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{
|
|
return 0;
|
|
}
|
|
|
|
#endif
|