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_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);