int dma_request(int ch, void (*irq_handler)(unsigned int), unsigned int arg,
unsigned int mode, unsigned int type)
{
if (!inited) {
inited = 1;
unsigned int i;
for(i= 0; i < NUM_DMA; i++)
{
dma_used[i] = 0; //Initial to not used
dma_irq[i] = 0;
}
__cpm_start_dmac();
__dmac_enable_module();
}
if(dma_used[ch]) return -1;
dma_used[ch] = 1;
dma_unit_size[ch] = UNIT_SIZE[((mode & DMAC_DCMD_DS_MASK) >> DMAC_DCMD_DS_BIT)];
REG_DMAC_DCKE |= DMAC_DCKE_CHN_ON(ch);
REG_DMAC_DCCSR(ch) = 0;
REG_DMAC_DRSR(ch) = type;
REG_DMAC_DCMD(ch) = mode;
if (irq_handler) {
request_irq(IRQ_DMA_0 + ch, irq_handler, arg);
dma_irq[ch] = 1;
}
else
dma_irq[ch] = 0;
return 0;
}
void dma_request(int ch, void (*irq_handler)(unsigned int), unsigned int arg,
unsigned int mode, unsigned int type)
{
if (!inited) {
inited = 1;
__dmac_enable_module();
}
dma_mode[ch] = mode;
REG_DMAC_DRSR(ch) = type;
if (irq_handler) {
request_irq(IRQ_DMA_0 + ch, irq_handler, arg);
dma_irq[ch] = 1;
}
}
static void __init soc_dmac_setup(void)
{
__dmac_enable_module(0);
__dmac_enable_module(1);
}
