I am having a setup issue with the DMA channel 0 with the DMA Controller
on PPC440GX. The code I wrote is:
#if defined(CONFIG_PPC4xx_DMA)
/* Setup the DMA */
DPRINTK("PPC4xx pwidth: %d\n", ppc4xx_get_peripheral_width(DMA_CH0));
ppc4xx_set_dma_mode(DMA_CH0, DMA_MODE_READ);
ppc4xx_set_src_addr(DMA_CH0, (phys_addr_t)(pdev->x2mem_phys_addr +
src_addr));
ppc4xx_set_dst_addr(DMA_CH0, (phys_addr_t)dst_addr);
ppc4xx_set_dma_count(DMA_CH0, count);
ppc4xx_enable_dma(DMA_CH0);
DPRINTK("PPC4xx DMA Status: %d\n", ppc4xx_get_dma_status());
#endif
The DMA never completes and leaves a residue of 'count'. What am I missing?
Please Help.
Sanjay
