Function dma_add_descriptor()

Add a DMA transfer descriptor to a DMA resource.

enum status_code dma_add_descriptor(
		struct dma_resource * resource,
		DmacDescriptor * descriptor)

This function will add a DMA transfer descriptor to a DMA resource. If there was a transfer descriptor already allocated to the DMA resource, the descriptor will be linked to the next descriptor address.

Table 1. Parameters
Data direction	Parameter name	Description
[in]	resource	Pointer to the DMA resource
[in]	descriptor	Pointer to the transfer descriptor

Table 2. Return Values
Return value	Description
STATUS_OK	The descriptor is added to the DMA resource
STATUS_BUSY	The DMA resource was busy and the descriptor is not added