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286a4c5caa
Additional status callback is added to pcm_play/rec_data instead of using a special function to set it. Status includes DMA error reporting to the status callback. Playback and recording callback become more alike except playback uses "const void **addr" (because the data should not be altered) and recording uses "void **addr". "const" is put in place throughout where appropriate. Most changes are fairly trivial. One that should be checked in particular because it isn't so much is telechips, if anyone cares to bother. PP5002 is not so trivial either but that tested as working. Change-Id: I4928d69b3b3be7fb93e259f81635232df9bd1df2 Reviewed-on: http://gerrit.rockbox.org/166 Reviewed-by: Michael Sevakis <jethead71@rockbox.org> Tested-by: Michael Sevakis <jethead71@rockbox.org>
356 lines
9.9 KiB
C
356 lines
9.9 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) 2006 by Michael Sevakis
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* Copyright (C) 2008 by Rob Purchase
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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 <stdlib.h>
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#include "system.h"
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#include "kernel.h"
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#include "logf.h"
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#include "audio.h"
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#include "sound.h"
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#include "i2s.h"
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#include "pcm.h"
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#include "pcm-internal.h"
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struct dma_data
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{
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/* NOTE: The order of size and p is important if you use assembler
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optimised fiq handler, so don't change it. */
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union
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{
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uint16_t *p;
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const void *p_r;
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void *p_w;
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};
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size_t size;
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#if NUM_CORES > 1
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unsigned core;
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#endif
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int locked;
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int state;
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};
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/****************************************************************************
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** Playback DMA transfer
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**/
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struct dma_data dma_play_data SHAREDBSS_ATTR =
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{
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/* Initialize to a locked, stopped state */
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.p = NULL,
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.size = 0,
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#if NUM_CORES > 1
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.core = 0x00,
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#endif
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.locked = 0,
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.state = 0
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};
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const void * pcm_play_dma_get_peak_buffer(int *count)
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{
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unsigned long addr = (unsigned long)dma_play_data.p;
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size_t cnt = dma_play_data.size;
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*count = cnt >> 2;
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return (void *)((addr + 2) & ~3);
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}
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void pcm_play_dma_init(void)
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{
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DAVC = 0x0; /* Digital Volume = max */
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#ifdef COWON_D2
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/* Set DAI clock divided from PLL0 (192MHz).
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The best approximation of 256*44.1kHz is 11.291MHz. */
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BCLKCTR &= ~DEV_DAI;
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PCLK_DAI = (1<<28) | 61682; /* DCO mode */
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BCLKCTR |= DEV_DAI;
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/* Enable DAI block in Master mode, 256fs->32fs, 16bit LSB */
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DAMR = 0x3c8e80;
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#elif defined(IAUDIO_7)
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BCLKCTR &= ~DEV_DAI;
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PCLK_DAI = (0x800a << 16) | (PCLK_DAI & 0xffff);
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BCLKCTR |= DEV_DAI;
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/* Master mode, 256->64fs, 16bit LSB*/
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DAMR = 0x3cce20;
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#elif defined(LOGIK_DAX)
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/* TODO */
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#elif defined(SANSA_M200)
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/* TODO */
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#elif defined(SANSA_C100)
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/* TODO */
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#else
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#error "Target isn't supported"
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#endif
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/* Set DAI interrupts as FIQs */
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IRQSEL = ~(DAI_RX_IRQ_MASK | DAI_TX_IRQ_MASK);
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/* Initialize default register values. */
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audiohw_init();
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dma_play_data.size = 0;
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#if NUM_CORES > 1
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dma_play_data.core = 0; /* no core in control */
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#endif
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}
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void pcm_play_dma_postinit(void)
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{
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audiohw_postinit();
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}
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void pcm_dma_apply_settings(void)
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{
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}
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static void play_start_pcm(void)
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{
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DAMR &= ~(1<<14); /* disable tx */
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dma_play_data.state = 1;
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if (dma_play_data.size >= 16)
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{
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DADO_L(0) = *dma_play_data.p++;
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DADO_R(0) = *dma_play_data.p++;
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DADO_L(1) = *dma_play_data.p++;
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DADO_R(1) = *dma_play_data.p++;
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DADO_L(2) = *dma_play_data.p++;
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DADO_R(2) = *dma_play_data.p++;
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DADO_L(3) = *dma_play_data.p++;
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DADO_R(3) = *dma_play_data.p++;
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dma_play_data.size -= 16;
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}
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DAMR |= (1<<14); /* enable tx */
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}
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static void play_stop_pcm(void)
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{
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DAMR &= ~(1<<14); /* disable tx */
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dma_play_data.state = 0;
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}
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void pcm_play_dma_start(const void *addr, size_t size)
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{
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dma_play_data.p_r = addr;
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dma_play_data.size = size;
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#if NUM_CORES > 1
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/* This will become more important later - and different ! */
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dma_play_data.core = processor_id(); /* save initiating core */
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#endif
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IEN |= DAI_TX_IRQ_MASK;
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play_start_pcm();
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}
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void pcm_play_dma_stop(void)
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{
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play_stop_pcm();
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dma_play_data.size = 0;
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#if NUM_CORES > 1
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dma_play_data.core = 0; /* no core in control */
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#endif
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}
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void pcm_play_lock(void)
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{
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int status = disable_fiq_save();
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if (++dma_play_data.locked == 1)
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{
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IEN &= ~DAI_TX_IRQ_MASK;
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}
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restore_fiq(status);
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}
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void pcm_play_unlock(void)
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{
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int status = disable_fiq_save();
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if (--dma_play_data.locked == 0 && dma_play_data.state != 0)
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{
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IEN |= DAI_TX_IRQ_MASK;
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}
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restore_fiq(status);
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}
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void pcm_play_dma_pause(bool pause)
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{
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if (pause) {
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play_stop_pcm();
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} else {
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play_start_pcm();
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}
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}
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size_t pcm_get_bytes_waiting(void)
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{
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return dma_play_data.size & ~3;
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}
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#ifdef HAVE_RECORDING
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/* TODO: implement */
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void pcm_rec_dma_init(void)
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{
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}
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void pcm_rec_dma_close(void)
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{
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}
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void pcm_rec_dma_start(void *addr, size_t size)
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{
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(void) addr;
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(void) size;
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}
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void pcm_rec_dma_stop(void)
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{
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}
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void pcm_rec_lock(void)
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{
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}
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void pcm_rec_unlock(void)
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{
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}
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const void * pcm_rec_dma_get_peak_buffer(void)
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{
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return NULL;
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}
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#endif
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#if defined(CPU_TCC77X) || defined(CPU_TCC780X)
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void fiq_handler(void) ICODE_ATTR __attribute__((naked));
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void fiq_handler(void)
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{
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/* r10 contains DADO_L0 base address (set in crt0.S to minimise code in the
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* FIQ handler. r11 contains address of p (also set in crt0.S). Most other
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* addresses we need are generated by using offsets with these two.
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* r8 and r9 contains local copies of p and size respectively.
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* r0-r3 and r12 is a working register.
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*/
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asm volatile (
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"sub lr, lr, #4 \n"
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"stmfd sp!, { r0-r3, lr } \n" /* stack scratch regs and lr */
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"mov r14, #0 \n" /* Was the callback called? */
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#if defined(CPU_TCC780X)
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"mov r8, #0xc000 \n" /* DAI_TX_IRQ_MASK | DAI_RX_IRQ_MASK */
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"ldr r9, =0xf3001004 \n" /* CREQ */
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#elif defined(CPU_TCC77X)
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"mov r8, #0x0030 \n" /* DAI_TX_IRQ_MASK | DAI_RX_IRQ_MASK */
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"ldr r9, =0x80000104 \n" /* CREQ */
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#endif
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"str r8, [r9] \n" /* clear DAI IRQs */
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"ldmia r11, { r8-r9 } \n" /* r8 = p, r9 = size */
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"cmp r9, #0x10 \n" /* is size <16? */
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"blo .more_data \n" /* if so, ask pcmbuf for more data */
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".fill_fifo: \n"
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"ldr r12, [r8], #4 \n" /* load two samples */
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"str r12, [r10, #0x0] \n" /* write top sample to DADO_L0 */
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"mov r12, r12, lsr #16 \n" /* put right sample at the bottom */
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"str r12, [r10, #0x4] \n" /* write low sample to DADO_R0*/
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"ldr r12, [r8], #4 \n" /* load two samples */
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"str r12, [r10, #0x8] \n" /* write top sample to DADO_L1 */
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"mov r12, r12, lsr #16 \n" /* put right sample at the bottom */
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"str r12, [r10, #0xc] \n" /* write low sample to DADO_R1*/
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"ldr r12, [r8], #4 \n" /* load two samples */
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"str r12, [r10, #0x10] \n" /* write top sample to DADO_L2 */
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"mov r12, r12, lsr #16 \n" /* put right sample at the bottom */
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"str r12, [r10, #0x14] \n" /* write low sample to DADO_R2*/
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"ldr r12, [r8], #4 \n" /* load two samples */
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"str r12, [r10, #0x18] \n" /* write top sample to DADO_L3 */
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"mov r12, r12, lsr #16 \n" /* put right sample at the bottom */
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"str r12, [r10, #0x1c] \n" /* write low sample to DADO_R3*/
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"sub r9, r9, #0x10 \n" /* 4 words written */
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"stmia r11, { r8-r9 } \n" /* save p and size */
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"cmp r14, #0 \n" /* Callback called? */
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"ldmeqfd sp!, { r0-r3, pc }^ \n" /* no? -> exit */
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"ldr r1, =pcm_play_status_callback \n"
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"ldr r1, [r1] \n"
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"cmp r1, #0 \n"
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"movne r0, %1 \n"
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"blxne r1 \n"
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"ldmfd sp!, { r0-r3, pc }^ \n" /* exit */
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".more_data: \n"
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"mov r14, #1 \n" /* Remember we got more data in this FIQ */
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"mov r0, %0 \n" /* r0 = status */
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"mov r1, r11 \n" /* r1 = &dma_play_data.p_r */
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"add r2, r11, #4 \n" /* r2 = &dma_play_data.size */
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"mov lr, pc \n"
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"ldr pc, =pcm_play_dma_complete_callback \n"
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"cmp r0, #0 \n" /* any more to play? */
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"ldmneia r11, { r8-r9 } \n" /* load new p and size */
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"cmpne r9, #0x0f \n" /* did we actually get enough data? */
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"bhi .fill_fifo \n" /* not stop and enough? refill */
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"ldmfd sp!, { r0-r3, pc }^ \n" /* exit */
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".ltorg \n"
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: : "i"(PCM_DMAST_OK), "i"(PCM_DMAST_STARTED)
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);
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}
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#else /* C version for reference */
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void fiq_handler(void) ICODE_ATTR;
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void fiq_handler(void)
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{
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register bool new_buffer = false;
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if (dma_play_data.size < 16)
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{
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/* p is empty, get some more data */
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new_buffer = pcm_play_dma_complete_callback(&dma_play_data.p_r,
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&dma_play_data.size);
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}
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if (dma_play_data.size >= 16)
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{
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DADO_L(0) = *dma_play_data.p++;
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DADO_R(0) = *dma_play_data.p++;
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DADO_L(1) = *dma_play_data.p++;
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DADO_R(1) = *dma_play_data.p++;
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DADO_L(2) = *dma_play_data.p++;
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DADO_R(2) = *dma_play_data.p++;
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DADO_L(3) = *dma_play_data.p++;
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DADO_R(3) = *dma_play_data.p++;
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dma_play_data.size -= 16;
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}
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/* Clear FIQ status */
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CREQ = DAI_TX_IRQ_MASK | DAI_RX_IRQ_MASK;
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if (new_buffer)
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pcm_play_dma_status_callback(PCM_DMAST_STARTED);
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}
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#endif
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/* TODO: required by wm8731 codec */
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void i2s_reset(void)
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{
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/* DAMR = 0; */
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}
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