Commit ab959c7d authored by Biju Das's avatar Biju Das Committed by Vinod Koul
Browse files

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: default avatarBiju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: default avatarLad 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: default avatarVinod Koul <vkoul@kernel.org>
parent 9b9b1253

include/linux/dmaengine.h

+2 −1
Original line number Diff line number Diff line
@@ -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