src_set_rom
int (*src_set_rom)(void *blk, unsigned int rom);
.src_set_rom = src_set_rom,
.src_set_rom = src_set_rom,
hw->src_set_rom(src->rsc.ctrl_blk, 0);
hw->src_set_rom(src->rsc.ctrl_blk, 0);
hw->src_set_rom(src->rsc.ctrl_blk, 0);
.set_rom = src_set_rom,
hw->src_set_rom(src->rsc.ctrl_blk, rom);