88   uint *reg_used; //[n_ch] Number of used entries in registry[n_ch]  member
124     el->reg_used = (uint*)bs_calloc(n_ch, sizeof(uint));  in nhw_dppi_init()
162     free(nhw_dppi_st[i].reg_used);  in nhw_dppi_free()
163     nhw_dppi_st[i].reg_used = NULL;  in nhw_dppi_free()
250   for (uint i = 0; i < this->reg_used[ch_n]; i++) {  in nhw_dppi_channel_subscribe()
259   if (this->reg_used[ch_n] >= this->reg_size[ch_n]) {  in nhw_dppi_channel_subscribe()
264   int n = this->reg_used[ch_n];  in nhw_dppi_channel_subscribe()
267   this->reg_used[ch_n]++;  in nhw_dppi_channel_subscribe()
302   for (uint i = 0; i < this->reg_used[ch_n]; i++) {  in nhw_dppi_channel_unsubscribe()
305       nhw_dppi_shift_registration(ch_reg, i, this->reg_used[ch_n]);  in nhw_dppi_channel_unsubscribe()
306       this->reg_used[ch_n]--;  in nhw_dppi_channel_unsubscribe()
334   for (uint i = 0; i < this->reg_used[ch_n]; i++) {  in nhw_dppi_event_signal()