diff mbox

dmaengine: jz4740: Define capabilities

Message ID 1427562344-32340-1-git-send-email-lars@metafoo.de (mailing list archive)
State Accepted
Headers show

Commit Message

Lars-Peter Clausen March 28, 2015, 5:05 p.m. UTC 
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>
---
 drivers/dma/dma-jz4740.c |    7 +++++++
 1 file changed, 7 insertions(+)

Comments

Vinod Koul March 30, 2015, 5:31 p.m. UTC | #1 
On Sat, Mar 28, 2015 at 06:05:44PM +0100, Lars-Peter Clausen wrote:
> Setup the capabilities of the device/driver, so that users of the DMAengine API
> can query them.
Applied, thanks
diff mbox

Patch

diff --git a/drivers/dma/dma-jz4740.c b/drivers/dma/dma-jz4740.c
index 7497578..7638b24 100644
--- a/drivers/dma/dma-jz4740.c
+++ b/drivers/dma/dma-jz4740.c
@@ -502,6 +502,9 @@  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;
@@ -538,6 +541,10 @@  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);