void set_dma_config(unsigned int channel, unsigned short config);
unsigned short set_bfin_dma_config(char direction, char flow_mode,
char intr_mode, char dma_mode, char width);
+void set_dma_curr_addr(unsigned int channel, unsigned long addr);
/* get curr status for polling */
unsigned short get_dma_curr_irqstat(unsigned int channel);