void dma_stop(int ch)
{
int i;
#define DMA_DISABLE_POLL 0x10000
if (!__dmac_channel_enabled(ch))
return;
for (i=0;i<DMA_DISABLE_POLL;i++)
if (__dmac_channel_transmit_end_detected(ch))
break;
__dmac_disable_channel(ch);
if (dma_irq[ch])
__dmac_channel_disable_irq(ch);
}
static irqreturn_t jz_mmc_dma_tx_callback(int irq, void *devid)
{
int chan = txdmachan;
disable_dma(chan);
if (__dmac_channel_address_error_detected(chan)) {
printk(KERN_DEBUG "%s: DMAC address error.\n",
__FUNCTION__);
__dmac_channel_clear_address_error(chan);
}
if (__dmac_channel_transmit_end_detected(chan)) {
__dmac_channel_clear_transmit_end(chan);
}
return IRQ_HANDLED;
}
int dma_wait_finish(int ch)
{
while (!__dmac_channel_transmit_end_detected(ch));
return 0;
}
