DCAM1394_REG_OFFS_FEATURE_CSR_BASE
dcam_reg_io.offs = DCAM1394_REG_OFFS_FEATURE_CSR_BASE +
DCAM1394_REG_OFFS_FEATURE_CSR_BASE;
reg_io.offs = feature_csr_offs + DCAM1394_REG_OFFS_FEATURE_CSR_BASE;