1 /* SPDX-License-Identifier: GPL-2.0 */
6 #define SPRD_DMA_REQ_SHIFT 16
7 #define SPRD_DMA_FLAGS(req_mode, int_type) \
8 ((req_mode) << SPRD_DMA_REQ_SHIFT | (int_type))
11 * enum sprd_dma_req_mode: define the DMA request mode
12 * @SPRD_DMA_FRAG_REQ: fragment request mode
13 * @SPRD_DMA_BLK_REQ: block request mode
14 * @SPRD_DMA_TRANS_REQ: transaction request mode
15 * @SPRD_DMA_LIST_REQ: link-list request mode
17 * We have 4 types request mode: fragment mode, block mode, transaction mode
18 * and linklist mode. One transaction can contain several blocks, one block can
19 * contain several fragments. Link-list mode means we can save several DMA
20 * configuration into one reserved memory, then DMA can fetch each DMA
21 * configuration automatically to start transfer.
23 enum sprd_dma_req_mode {
31 * enum sprd_dma_int_type: define the DMA interrupt type
32 * @SPRD_DMA_NO_INT: do not need generate DMA interrupts.
33 * @SPRD_DMA_FRAG_INT: fragment done interrupt when one fragment request
35 * @SPRD_DMA_BLK_INT: block done interrupt when one block request is done.
36 * @SPRD_DMA_BLK_FRAG_INT: block and fragment interrupt when one fragment
37 * or one block request is done.
38 * @SPRD_DMA_TRANS_INT: tansaction done interrupt when one transaction
40 * @SPRD_DMA_TRANS_FRAG_INT: transaction and fragment interrupt when one
41 * transaction request or fragment request is done.
42 * @SPRD_DMA_TRANS_BLK_INT: transaction and block interrupt when one
43 * transaction request or block request is done.
44 * @SPRD_DMA_LIST_INT: link-list done interrupt when one link-list request
46 * @SPRD_DMA_CFGERR_INT: configure error interrupt when configuration is
49 enum sprd_dma_int_type {
53 SPRD_DMA_BLK_FRAG_INT,
55 SPRD_DMA_TRANS_FRAG_INT,
56 SPRD_DMA_TRANS_BLK_INT,