/* Busy-waiting for a DMA transfer
* This has to be called before another transfer is started
* PARAMETER
* chan: Channel to wait for
*
* RETURN of non-zero means error*/
int omap3_dma_wait_for_transfer(uint32_t chan)
{
uint32_t val;
if (!(dma_active & (1 << chan))) {
val = readl(&dma4_cfg->irqstatus_l[0]);
if (!(val & chan)) {
debug("dma: The channel you are trying to wait for "
"was never activated - ERROR\n");
return -1; /* channel was never active */
}
}
/* all irqs on line 0 */
while (!(readl(&dma4_cfg->irqstatus_l[0]) & (1 << chan)))
asm("nop");
val = readl(&dma4_cfg->chan[chan].csr);
if ((val & CSR_TRANS_ERR) | (val & CSR_SUPERVISOR_ERR) |
(val & CSR_MISALIGNED_ADRS_ERR)) {
debug("err code: %X\n", val);
debug("dma: transfer error detected\n");
reset_irq(chan);
return -1;
}
reset_irq(chan);
return 0;
}
void ym3802_device::device_reset()
{
m_reg.clear();
reset_irq(0xff);
transmit_register_reset();
receive_register_reset();
reset_midi_timer();
set_comms_mode();
}
