diff options
| author |   Joy Zou <joy.zou@nxp.com> | 2021-10-26 17:00:25 +0800 |
|---|---|---|
| committer |   Vinod Koul <vkoul@kernel.org> | 2021-10-28 22:56:24 +0530 |
| commit | e0674853943287669a82d1ffe09a700944615978 (patch) | |
| tree | 030225807cafa7f415ecb6c777678f00962d0218 /drivers/dma/fsl-edma.c | |
| parent | dmaengine: idxd: fix resource leak on dmaengine driver disable (diff) | |
| download | linux-dev-e0674853943287669a82d1ffe09a700944615978.tar.xz linux-dev-e0674853943287669a82d1ffe09a700944615978.zip | |
dmaengine: fsl-edma: support edma memcpy
Add memcpy in edma. The edma has the capability to transfer data by
software trigger so that it could be used for memory copy. Enable
MEMCPY for edma driver and it could be test directly by dmatest.
Signed-off-by: Joy Zou <joy.zou@nxp.com>
Link: https://lore.kernel.org/r/20211026090025.2777292-1-joy.zou@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma/fsl-edma.c')
| -rw-r--r-- | drivers/dma/fsl-edma.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/dma/fsl-edma.c b/drivers/dma/fsl-edma.c index 90bb72af306c..76cbf54aec58 100644 --- a/drivers/dma/fsl-edma.c +++ b/drivers/dma/fsl-edma.c @@ -17,6 +17,7 @@ #include <linux/of_address.h> #include <linux/of_irq.h> #include <linux/of_dma.h> +#include <linux/dma-mapping.h> #include "fsl-edma-common.h" @@ -372,6 +373,7 @@ static int fsl_edma_probe(struct platform_device *pdev) dma_cap_set(DMA_PRIVATE, fsl_edma->dma_dev.cap_mask); dma_cap_set(DMA_SLAVE, fsl_edma->dma_dev.cap_mask); dma_cap_set(DMA_CYCLIC, fsl_edma->dma_dev.cap_mask); + dma_cap_set(DMA_MEMCPY, fsl_edma->dma_dev.cap_mask); fsl_edma->dma_dev.dev = &pdev->dev; fsl_edma->dma_dev.device_alloc_chan_resources @@ -381,6 +383,7 @@ static int fsl_edma_probe(struct platform_device *pdev) fsl_edma->dma_dev.device_tx_status = fsl_edma_tx_status; fsl_edma->dma_dev.device_prep_slave_sg = fsl_edma_prep_slave_sg; fsl_edma->dma_dev.device_prep_dma_cyclic = fsl_edma_prep_dma_cyclic; + fsl_edma->dma_dev.device_prep_dma_memcpy = fsl_edma_prep_memcpy; fsl_edma->dma_dev.device_config = fsl_edma_slave_config; fsl_edma->dma_dev.device_pause = fsl_edma_pause; fsl_edma->dma_dev.device_resume = fsl_edma_resume; @@ -392,6 +395,10 @@ static int fsl_edma_probe(struct platform_device *pdev) fsl_edma->dma_dev.dst_addr_widths = FSL_EDMA_BUSWIDTHS; fsl_edma->dma_dev.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV); + fsl_edma->dma_dev.copy_align = DMAENGINE_ALIGN_32_BYTES; + /* Per worst case 'nbytes = 1' take CITER as the max_seg_size */ + dma_set_max_seg_size(fsl_edma->dma_dev.dev, 0x3fff); + platform_set_drvdata(pdev, fsl_edma); ret = dma_async_device_register(&fsl_edma->dma_dev); |