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ste_dma40: implement support for scatterlist to scatterlist copy
Now that the DMAEngine API has support for scatterlist to scatterlist copy, implement support for the STE DMA40 DMA controller. Cc: Linus Walleij <linus.ml.walleij@gmail.com> Acked-by: Per Fridén <per.friden@stericsson.com> Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
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1 changed files with 17 additions and 0 deletions
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@ -1857,6 +1857,18 @@ static struct dma_async_tx_descriptor *d40_prep_memcpy(struct dma_chan *chan,
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return NULL;
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}
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static struct dma_async_tx_descriptor *
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d40_prep_sg(struct dma_chan *chan,
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struct scatterlist *dst_sg, unsigned int dst_nents,
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struct scatterlist *src_sg, unsigned int src_nents,
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unsigned long dma_flags)
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{
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if (dst_nents != src_nents)
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return NULL;
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return stedma40_memcpy_sg(chan, dst_sg, src_sg, dst_nents, dma_flags);
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}
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static int d40_prep_slave_sg_log(struct d40_desc *d40d,
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struct d40_chan *d40c,
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struct scatterlist *sgl,
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@ -2281,6 +2293,7 @@ static int __init d40_dmaengine_init(struct d40_base *base,
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base->dma_slave.device_alloc_chan_resources = d40_alloc_chan_resources;
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base->dma_slave.device_free_chan_resources = d40_free_chan_resources;
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base->dma_slave.device_prep_dma_memcpy = d40_prep_memcpy;
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base->dma_slave.device_prep_dma_sg = d40_prep_sg;
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base->dma_slave.device_prep_slave_sg = d40_prep_slave_sg;
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base->dma_slave.device_tx_status = d40_tx_status;
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base->dma_slave.device_issue_pending = d40_issue_pending;
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@ -2301,10 +2314,12 @@ static int __init d40_dmaengine_init(struct d40_base *base,
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dma_cap_zero(base->dma_memcpy.cap_mask);
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dma_cap_set(DMA_MEMCPY, base->dma_memcpy.cap_mask);
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dma_cap_set(DMA_SG, base->dma_slave.cap_mask);
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base->dma_memcpy.device_alloc_chan_resources = d40_alloc_chan_resources;
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base->dma_memcpy.device_free_chan_resources = d40_free_chan_resources;
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base->dma_memcpy.device_prep_dma_memcpy = d40_prep_memcpy;
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base->dma_slave.device_prep_dma_sg = d40_prep_sg;
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base->dma_memcpy.device_prep_slave_sg = d40_prep_slave_sg;
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base->dma_memcpy.device_tx_status = d40_tx_status;
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base->dma_memcpy.device_issue_pending = d40_issue_pending;
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@ -2331,10 +2346,12 @@ static int __init d40_dmaengine_init(struct d40_base *base,
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dma_cap_zero(base->dma_both.cap_mask);
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dma_cap_set(DMA_SLAVE, base->dma_both.cap_mask);
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dma_cap_set(DMA_MEMCPY, base->dma_both.cap_mask);
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dma_cap_set(DMA_SG, base->dma_slave.cap_mask);
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base->dma_both.device_alloc_chan_resources = d40_alloc_chan_resources;
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base->dma_both.device_free_chan_resources = d40_free_chan_resources;
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base->dma_both.device_prep_dma_memcpy = d40_prep_memcpy;
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base->dma_slave.device_prep_dma_sg = d40_prep_sg;
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base->dma_both.device_prep_slave_sg = d40_prep_slave_sg;
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base->dma_both.device_tx_status = d40_tx_status;
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base->dma_both.device_issue_pending = d40_issue_pending;
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