qiurui
/
Centos-kernel-stream-9
mirror of https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-9.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

dmaengine: Extend the dma_slave_width for 128 bytes 

Bugzilla: https://bugzilla.redhat.com/2112028
Upstream Status: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git

commit ab959c7d4ea086852f35c7ff20ecd79b7471cfad
Author: Biju Das <biju.das.jz@bp.renesas.com>
Date:   Fri Aug 6 10:53:21 2021 +0100

    dmaengine: Extend the dma_slave_width for 128 bytes

    Add DMA_SLAVE_BUSWIDTH_128_BYTES to dma_slave_width for DMA engines
    and users to select 128 bytes as bus width.

    Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
    Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
    Link: https://lore.kernel.org/r/20210806095322.2326-3-biju.das.jz@bp.renesas.com
    Signed-off-by: Vinod Koul <vkoul@kernel.org>

(cherry picked from commit ab959c7d4ea086852f35c7ff20ecd79b7471cfad)
Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com>
This commit is contained in:
Jerry Snitselaar 2021-08-06 10:53:21 +01:00
parent 573ab65bd7
commit 034ec48960
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
include/linux/dmaengine.h
View File

@ -380,6 +380,7 @@ enum dma_slave_buswidth {
DMA_SLAVE_BUSWIDTH_16_BYTES = 16,
DMA_SLAVE_BUSWIDTH_32_BYTES = 32,
DMA_SLAVE_BUSWIDTH_64_BYTES = 64,
DMA_SLAVE_BUSWIDTH_128_BYTES = 128,
};
/**
@ -398,7 +399,7 @@ enum dma_slave_buswidth {
* @src_addr_width: this is the width in bytes of the source (RX)
* register where DMA data shall be read. If the source
* is memory this may be ignored depending on architecture.
* Legal values: 1, 2, 3, 4, 8, 16, 32, 64.
* Legal values: 1, 2, 3, 4, 8, 16, 32, 64, 128.
* @dst_addr_width: same as src_addr_width but for destination
* target (TX) mutatis mutandis.
* @src_maxburst: the maximum number of words (note: words, as in