bool pcm_rec_dma_complete_callback(enum pcm_dma_status status,
void **addr, size_t *size)
{
/* Check status callback first if error */
if (status < PCM_DMAST_OK)
status = pcm_rec_dma_status_callback(status);
pcm_rec_callback_type have_more = pcm_callback_more_ready;
if (have_more && status >= PCM_DMAST_OK)
{
/* Call registered callback to obtain next buffer */
have_more(addr, size);
ALIGN_AUDIOBUF(*addr, *size);
if (*addr && *size)
{
/* Need a physical DMA address translation, if not already
* physical. */
pcm_rec_peak_addr = pcm_rec_dma_addr(*addr);
return true;
}
}
/* Error, callback missing or no more DMA to do */
pcm_rec_dma_stop();
pcm_recording_stopped();
return false;
}
void pcm_rec_dma_close(void)
{
pcm_rec_dma_stop();
and_l(0xffff00ff, &DMAROUTE);
ICR7 = 0x00; /* Disable interrupt */
dma_rec_lock.state = (0 << 15);
} /* pcm_rec_dma_close */
void pcm_rec_dma_init(void)
{
DIVR1 = 55; /* DMA1 is mapped into vector 55 in system.c */
DMACONFIG = 1; /* DMA0Req = PDOR3, DMA1Req = PDIR2 */
and_l(0xffff00ff, &DMAROUTE);
or_l(DMA1_REQ_AUDIO_2, &DMAROUTE);
pcm_rec_dma_stop();
/* Enable interrupt at level 6, priority 1 */
ICR7 = (6 << 2) | (1 << 0);
} /* pcm_init_recording */
void pcm_stop_recording(void)
{
logf("pcm_stop_recording");
pcm_rec_lock();
if (pcm_recording)
{
logf(" pcm_rec_dma_stop");
pcm_rec_dma_stop();
pcm_recording_stopped();
}
pcm_rec_unlock();
} /* pcm_stop_recording */
void pcm_close_recording(void)
{
logf("pcm_close_recording");
pcm_rec_lock();
if (pcm_recording)
{
logf(" pcm_rec_dma_stop");
pcm_rec_dma_stop();
pcm_recording_stopped();
}
logf(" pcm_rec_dma_close");
pcm_rec_dma_close();
pcm_rec_unlock();
}
void pcm_rec_dma_start(void *addr, size_t size)
{
/* stop any DMA in progress */
pcm_rec_dma_stop();
and_l(~PDIR2_FIFO_RESET, &DATAINCONTROL);
/* Start the DMA transfer.. */
#ifdef HAVE_SPDIF_REC
/* clear: ebu1cnew, valnogood, symbolerr, parityerr */
INTERRUPTCLEAR = (1 << 25) | (1 << 24) | (1 << 23) | (1 << 22);
#endif
SAR1 = (unsigned long)&PDIR2; /* Source address */
DAR1 = (unsigned long)addr; /* Destination address */
BCR1 = (unsigned long)size; /* Bytes to transfer */
DCR1 = DMA_INT | DMA_EEXT | DMA_CS | DMA_AA | DMA_DINC |
DMA_DSIZE(DMA_SIZE_LINE) | DMA_START;
dma_rec_lock.state = (0 << 15);
} /* pcm_rec_dma_start */
void pcm_rec_dma_close(void)
{
bitset32(&CGU_PERI, CGU_I2SIN_APB_CLOCK_ENABLE);
pcm_rec_dma_stop();
}
