diff options
| author | Frank Li <Frank.Li@nxp.com> | 2023-08-21 19:16:11 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-08-22 17:41:02 +0300 |
| commit | ee2dda06465a3b0f533c829a5bdc2ff15588d8e0 (patch) | |
| tree | bf934c5132e762a9b6fab474839a0f924463f1d1 /drivers/dma/fsl-edma-common.c | |
| parent | 79434f9b97361601e65e0f5576e9760fefebf19a (diff) | |
| download | linux-ee2dda06465a3b0f533c829a5bdc2ff15588d8e0.tar.xz | |
dmaengine: fsl-edma: simply ATTR_DSIZE and ATTR_SSIZE by using ffs()
Removes all ATTR_DSIZE_*BIT(BYTE) and ATTR_SSIZE_*BIT(BYTE) definitions
in edma. Uses ffs() instead, as it gives identical results. This simplifies
the code and avoids adding more similar definitions in future V3 version.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20230821161617.2142561-7-Frank.Li@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/fsl-edma-common.c')
| -rw-r--r-- | drivers/dma/fsl-edma-common.c | 21 |
1 files changed, 8 insertions, 13 deletions
diff --git a/drivers/dma/fsl-edma-common.c b/drivers/dma/fsl-edma-common.c index 2b91863502d4..e0f914616c5f 100644 --- a/drivers/dma/fsl-edma-common.c +++ b/drivers/dma/fsl-edma-common.c @@ -154,18 +154,13 @@ void fsl_edma_chan_mux(struct fsl_edma_chan *fsl_chan, static unsigned int fsl_edma_get_tcd_attr(enum dma_slave_buswidth addr_width) { - switch (addr_width) { - case 1: - return EDMA_TCD_ATTR_SSIZE_8BIT | EDMA_TCD_ATTR_DSIZE_8BIT; - case 2: - return EDMA_TCD_ATTR_SSIZE_16BIT | EDMA_TCD_ATTR_DSIZE_16BIT; - case 4: - return EDMA_TCD_ATTR_SSIZE_32BIT | EDMA_TCD_ATTR_DSIZE_32BIT; - case 8: - return EDMA_TCD_ATTR_SSIZE_64BIT | EDMA_TCD_ATTR_DSIZE_64BIT; - default: - return EDMA_TCD_ATTR_SSIZE_32BIT | EDMA_TCD_ATTR_DSIZE_32BIT; - } + u32 val; + + if (addr_width == DMA_SLAVE_BUSWIDTH_UNDEFINED) + addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; + + val = ffs(addr_width) - 1; + return val | (val << 8); } void fsl_edma_free_desc(struct virt_dma_desc *vdesc) @@ -623,7 +618,7 @@ struct dma_async_tx_descriptor *fsl_edma_prep_memcpy(struct dma_chan *chan, /* To match with copy_align and max_seg_size so 1 tcd is enough */ fsl_edma_fill_tcd(fsl_desc->tcd[0].vtcd, dma_src, dma_dst, - EDMA_TCD_ATTR_SSIZE_32BYTE | EDMA_TCD_ATTR_DSIZE_32BYTE, + fsl_edma_get_tcd_attr(DMA_SLAVE_BUSWIDTH_32_BYTES), 32, len, 0, 1, 1, 32, 0, true, true, false); return vchan_tx_prep(&fsl_chan->vchan, &fsl_desc->vdesc, flags); |