diff options
| author |   Eric Long <eric.long@spreadtrum.com> | 2018-04-19 10:00:48 +0800 |
|---|---|---|
| committer |   Vinod Koul <vkoul@kernel.org> | 2018-04-27 11:54:55 +0530 |
| commit | ab42ddb9eb71b580349b03e4fc5bfcf230422eb8 (patch) | |
| tree | 863280931bc91ae90602d94da4003be8506d72c2 /include/linux/dma | |
| parent | dmaengine: sprd: Define the DMA data width type (diff) | |
| download | wireguard-linux-ab42ddb9eb71b580349b03e4fc5bfcf230422eb8.tar.xz wireguard-linux-ab42ddb9eb71b580349b03e4fc5bfcf230422eb8.zip | |
dmaengine: sprd: Move DMA request mode and interrupt type into head file
This patch will move the Spreadtrum DMA request mode and interrupt type
into one head file for user to configure.
Signed-off-by: Eric Long <eric.long@spreadtrum.com>
Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'include/linux/dma')
| -rw-r--r-- | include/linux/dma/sprd-dma.h | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/include/linux/dma/sprd-dma.h b/include/linux/dma/sprd-dma.h new file mode 100644 index 000000000000..c545162e725b --- /dev/null +++ b/include/linux/dma/sprd-dma.h @@ -0,0 +1,57 @@ +/* SPDX-License-Identifier: GPL-2.0 */ + +#ifndef _SPRD_DMA_H_ +#define _SPRD_DMA_H_ + +/* + * enum sprd_dma_req_mode: define the DMA request mode + * @SPRD_DMA_FRAG_REQ: fragment request mode + * @SPRD_DMA_BLK_REQ: block request mode + * @SPRD_DMA_TRANS_REQ: transaction request mode + * @SPRD_DMA_LIST_REQ: link-list request mode + * + * We have 4 types request mode: fragment mode, block mode, transaction mode + * and linklist mode. One transaction can contain several blocks, one block can + * contain several fragments. Link-list mode means we can save several DMA + * configuration into one reserved memory, then DMA can fetch each DMA + * configuration automatically to start transfer. + */ +enum sprd_dma_req_mode { + SPRD_DMA_FRAG_REQ, + SPRD_DMA_BLK_REQ, + SPRD_DMA_TRANS_REQ, + SPRD_DMA_LIST_REQ, +}; + +/* + * enum sprd_dma_int_type: define the DMA interrupt type + * @SPRD_DMA_NO_INT: do not need generate DMA interrupts. + * @SPRD_DMA_FRAG_INT: fragment done interrupt when one fragment request + * is done. + * @SPRD_DMA_BLK_INT: block done interrupt when one block request is done. + * @SPRD_DMA_BLK_FRAG_INT: block and fragment interrupt when one fragment + * or one block request is done. + * @SPRD_DMA_TRANS_INT: tansaction done interrupt when one transaction + * request is done. + * @SPRD_DMA_TRANS_FRAG_INT: transaction and fragment interrupt when one + * transaction request or fragment request is done. + * @SPRD_DMA_TRANS_BLK_INT: transaction and block interrupt when one + * transaction request or block request is done. + * @SPRD_DMA_LIST_INT: link-list done interrupt when one link-list request + * is done. + * @SPRD_DMA_CFGERR_INT: configure error interrupt when configuration is + * incorrect. + */ +enum sprd_dma_int_type { + SPRD_DMA_NO_INT, + SPRD_DMA_FRAG_INT, + SPRD_DMA_BLK_INT, + SPRD_DMA_BLK_FRAG_INT, + SPRD_DMA_TRANS_INT, + SPRD_DMA_TRANS_FRAG_INT, + SPRD_DMA_TRANS_BLK_INT, + SPRD_DMA_LIST_INT, + SPRD_DMA_CFGERR_INT, +}; + +#endif |