writel_relaxed_bitmask
writel_relaxed_bitmask(0x1, &mhu->pbx->dbcw[priv->ch_idx].int_en, tfr_ack);
writel_relaxed_bitmask(0x0, &mhu->pbx->dbcw[priv->ch_idx].int_en, tfr_ack);
writel_relaxed_bitmask(0x1, &mhu->pbx->dbcw[priv->ch_idx].int_clr, tfr_ack);
writel_relaxed_bitmask(0x1, &dbcw[i].int_clr, tfr_ack);
writel_relaxed_bitmask(0x0, &dbcw[i].int_en, tfr_ack);
writel_relaxed_bitmask(0x1, &dbcw[i].ctrl, comb_en);
writel_relaxed_bitmask(0x1, &dbcw[i].ctrl, comb_en);
writel_relaxed_bitmask(0x1,
writel_relaxed_bitmask(0x0, &mhu->ctrl->x_ctrl, op_req);
writel_relaxed_bitmask(0x1, &mhu->ctrl->x_ctrl, op_req);