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);
}
void dma_stop(int ch)
{
int i;
if(0 == dma_used[ch])
return;
REG_DMAC_DCCSR(ch) = 0;
if (dma_irq[ch])
__dmac_channel_disable_irq(ch);
REG_DMAC_DCKE &= ~DMAC_DCKE_CHN_ON(ch); //Close clock to this channel
dma_used[ch] = 0;
dma_irq[ch] = 0;
}
static void mask_and_ack_dma_irq(unsigned int irq)
{
unsigned int intc_irq;
if ( irq < (IRQ_DMA_0 + HALF_DMA_NUM) ) /* DMAC Group 0 irq */
intc_irq = IRQ_DMAC0;
else if ( irq < (IRQ_DMA_0 + MAX_DMA_NUM) ) /* DMAC Group 1 irq */
intc_irq = IRQ_DMAC1;
else {
printk("%s, unexpected dma irq #%d\n", __FILE__, irq);
return ;
}
__intc_ack_irq(intc_irq);
__dmac_channel_ack_irq(irq-IRQ_DMA_0); /* needed?? add 20080506, Wolfgang */
__dmac_channel_disable_irq(irq - IRQ_DMA_0);
}
static void mask_and_ack_dma_irq(unsigned int irq)
{
__intc_ack_irq(IRQ_DMAC);
__dmac_channel_disable_irq(irq - IRQ_DMA_0);
}
static void disable_dma_irq(unsigned int irq)
{
__dmac_channel_disable_irq(irq - IRQ_DMA_0);
}
