Exemplo n.º 1
0
void pcm_play_dma_pause(bool pause)
{
    if (pause)
    {
        DSP_(_dma0_stopped)=2;
        dsp_wake();
    }
    else
    {
        DSP_(_dma0_stopped)=0;
        dsp_wake();
    }
}
Exemplo n.º 2
0
void DSPHINT(void)
{
    register pcm_more_callback_type get_more;   /* No stack for this */
    
    unsigned int i;

    IO_INTC_FIQ0 = 1 << 11;
    
    switch (dsp_message.msg) 
    {
    case MSG_DEBUGF:
        /* DSP stores one character per word. */
        for (i = 0; i < sizeof(buffer); i++) 
        {
            buffer[i] = dsp_message.payload.debugf.buffer[i];
        }
        
        DEBUGF("DSP: %s", buffer);
        break;
        
    case MSG_REFILL:
        /* Buffer empty.  Try to get more. */
        get_more = pcm_callback_for_more;
        size = 0;
        
        if (get_more == NULL || (get_more(&start, &size), size == 0))
        {
            /* Callback missing or no more DMA to do */
            pcm_play_dma_stop();
            pcm_play_dma_stopped_callback();
        }
    
        {
            unsigned long sdem_addr=(unsigned long)start - CONFIG_SDRAM_START;
            /* Flush any pending cache writes */
            clean_dcache_range(start, size);

            /* set the new DMA values */
            DSP_(_sdem_addrl) = sdem_addr & 0xffff;
            DSP_(_sdem_addrh) = sdem_addr >> 16;
            DSP_(_sdem_dsp_size) = size;
            
            DEBUGF("pcm_sdram at 0x%08lx, sdem_addr 0x%08lx",
                (unsigned long)start, (unsigned long)sdem_addr);
        }
        
        break;
    default:
        DEBUGF("DSP: unknown msg 0x%04x", dsp_message.msg);
        break;
    }
    
    /* Re-Activate the channel */
    dsp_wake();
    
    DEBUGF("DSP: %s", buffer);
}
Exemplo n.º 3
0
/* Note that size is actually limited to the size of a short right now due to
 *  the implementation on the DSP side (and the way that we access it)
 */
void pcm_play_dma_start(const void *addr, size_t size)
{
    unsigned long sdem_addr=(unsigned long)addr - CONFIG_SDRAM_START;
    /* Initialize codec. */
    DSP_(_sdem_addrl) = sdem_addr & 0xffff;
    DSP_(_sdem_addrh) = sdem_addr >> 16;
    DSP_(_sdem_dsp_size) = size;
    DSP_(_dma0_stopped)=0;
    
    dsp_wake();
}
Exemplo n.º 4
0
void pcm_play_dma_init(void)
{
    IO_INTC_IRQ0 = 1 << 11;
    IO_INTC_EINT0 |= 1 << 11;
    
    IO_DSPC_HPIB_CONTROL = 1 << 10 | 1 << 9 | 1 << 8 | 1 << 7 | 1 << 3 | 1 << 0;
    
    dsp_reset();
    dsp_load(dsp_image);
    dsp_wake();
}
void pcm_play_dma_init(void)
{
    IO_INTC_IRQ0 = INTR_IRQ0_IMGBUF;
    bitset16(&IO_INTC_EINT0, INTR_EINT0_IMGBUF);
    
    /* Set this as a FIQ */
    bitset16(&IO_INTC_FISEL0, INTR_EINT0_IMGBUF);
    
    /* Enable the HPIB clock */
    bitset16(&IO_CLK_MOD0, (CLK_MOD0_HPIB | CLK_MOD0_DSP));

    IO_SDRAM_SDDMASEL = 0x24;

    IO_DSPC_HPIB_CONTROL = 1 << 10 | 1 << 9 | 1 << 8 | 1 << 7 | 1 << 3 | 1 << 0;
    
    dsp_reset();
    dsp_load(dsp_image);

    DSP_(_dma0_stopped)=1;
    dsp_wake();
}
Exemplo n.º 6
0
void pcm_play_dma_stop(void)
{
    DSP_(_dma0_stopped)=1;
    dsp_wake();
}