dmaengine: jz4740: Define capabilities

Setup the capabilities of the device/driver, so that users of the DMAengine API
can query them.

Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

diff --git a/drivers/dma/dma-jz4740.c b/drivers/dma/dma-jz4740.c
index 4527a3e..8488441 100644 (file)
--- a/drivers/dma/dma-jz4740.c
+++ b/drivers/dma/dma-jz4740.c
@@ -511,6 +511,9 @@ static void jz4740_dma_desc_free(struct virt_dma_desc *vdesc)
        kfree(container_of(vdesc, struct jz4740_dma_desc, vdesc));
 }
 
+#define JZ4740_DMA_BUSWIDTHS (BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) | \
+       BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) | BIT(DMA_SLAVE_BUSWIDTH_4_BYTES))
+
 static int jz4740_dma_probe(struct platform_device *pdev)
 {
        struct jz4740_dmaengine_chan *chan;
@@ -548,6 +551,10 @@ static int jz4740_dma_probe(struct platform_device *pdev)
        dd->device_prep_dma_cyclic = jz4740_dma_prep_dma_cyclic;
        dd->device_config = jz4740_dma_slave_config;
        dd->device_terminate_all = jz4740_dma_terminate_all;
+       dd->src_addr_widths = JZ4740_DMA_BUSWIDTHS;
+       dd->dst_addr_widths = JZ4740_DMA_BUSWIDTHS;
+       dd->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
+       dd->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
        dd->dev = &pdev->dev;
        INIT_LIST_HEAD(&dd->channels);