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dmaengine: xilinx_dma: Fix SG capability check for MCDMA

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The SG capability is inherently present with Multichannel DMA operation.
The register used to check for this capability with other DMA driver types
is not defined for MCDMA.

Fixes: 6ccd692bfb ("dmaengine: xilinx_dma: Add Xilinx AXI MCDMA Engine driver support")
Signed-off-by: Matthew Murrian <matthew.murrian@goctsi.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Link: https://lore.kernel.org/r/1604473206-32573-4-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Matthew Murrian 2020-11-04 12:30:06 +05:30 committed by Vinod Koul
parent c8ae793299
commit 96d5d884f7
1 changed files with 4 additions and 3 deletions
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7
drivers/dma/xilinx/xilinx_dma.c
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@ -2855,10 +2855,11 @@ static int xilinx_dma_chan_probe(struct xilinx_dma_device *xdev,
chan->stop_transfer = xilinx_dma_stop_transfer;
}
/* check if SG is enabled (only for AXIDMA and CDMA) */
/* check if SG is enabled (only for AXIDMA, AXIMCDMA, and CDMA) */
if (xdev->dma_config->dmatype != XDMA_TYPE_VDMA) {
if (dma_ctrl_read(chan, XILINX_DMA_REG_DMASR) &
XILINX_DMA_DMASR_SG_MASK)
if (xdev->dma_config->dmatype == XDMA_TYPE_AXIMCDMA ||
dma_ctrl_read(chan, XILINX_DMA_REG_DMASR) &
XILINX_DMA_DMASR_SG_MASK)
chan->has_sg = true;
dev_dbg(chan->dev, "ch %d: SG %s\n", chan->id,
chan->has_sg ? "enabled" : "disabled");