cs_writeb
cs_writeb(cs5535au, ACC_BM0_CMD, BM_CTL_EN);
cs_writeb(cs5535au, ACC_BM0_CMD, 0);
cs_writeb(cs5535au, ACC_BM0_CMD, BM_CTL_PAUSE);
cs_writeb(cs5535au, ACC_BM1_CMD, BM_CTL_EN);
cs_writeb(cs5535au, ACC_BM1_CMD, 0);
cs_writeb(cs5535au, ACC_BM1_CMD, BM_CTL_PAUSE);