-void dmac_setSourcesLLI(Dmac *dmac, DmacDesc *lli, uint32_t src, uint32_t dst, uint32_t desc);
-void dmac_configureDmacLLI(Dmac *dmac, DmacDesc *lli, size_t transfer_size, uint32_t cfg, uint32_t ctrla, uint32_t ctrlb);
-bool dmac_isLLIDone(Dmac *dmac);
-bool dmac_waitLLIDone(Dmac *dmac);
-
-void dmac_setSources(Dmac *dmac, uint32_t src, uint32_t dst);
-void dmac_configureDmac(Dmac *dmac, size_t transfer_size, uint32_t cfg, uint32_t ctrla, uint32_t ctrlb);
-int dmac_start(Dmac *dmac);
-bool dmac_isDone(Dmac *dmac);
-bool dmac_waitDone(Dmac *dmac);
-int dmac_error(Dmac *dmac);
+void dmac_setSourcesLLI(int ch, DmacDesc *lli, uint32_t src, uint32_t dst, uint32_t desc);
+void dmac_configureDmacLLI(int ch, DmacDesc *lli, size_t transfer_size, uint32_t cfg, uint32_t ctrla, uint32_t ctrlb);
+bool dmac_isLLIDone(int ch);
+bool dmac_waitLLIDone(int ch);