dmaengine: at_hdmac: declare slave capabilities

Declare slave capabilities to suppress "this driver doesn't support generic
slave capabilities reporting" warning.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index 86450b3442f2..1e1a4c567542 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -42,6 +42,11 @@
 #define ATC_DEFAULT_CFG         (ATC_FIFOCFG_HALFFIFO)
 #define ATC_DEFAULT_CTRLB       (ATC_SIF(AT_DMA_MEM_IF) \
                                 |ATC_DIF(AT_DMA_MEM_IF))
+#define ATC_DMA_BUSWIDTHS\
+        (BIT(DMA_SLAVE_BUSWIDTH_UNDEFINED) |\
+        BIT(DMA_SLAVE_BUSWIDTH_1_BYTE) |\
+        BIT(DMA_SLAVE_BUSWIDTH_2_BYTES) |\
+        BIT(DMA_SLAVE_BUSWIDTH_4_BYTES))
 
 /*
  * Initial number of descriptors to allocate for each channel. This could
@@ -1531,6 +1536,10 @@ static int __init at_dma_probe(struct platform_device *pdev)
                 atdma->dma_common.device_pause = atc_pause;
                 atdma->dma_common.device_resume = atc_resume;
                 atdma->dma_common.device_terminate_all = atc_terminate_all;
+                atdma->dma_common.src_addr_widths = ATC_DMA_BUSWIDTHS;
+                atdma->dma_common.dst_addr_widths = ATC_DMA_BUSWIDTHS;
+                atdma->dma_common.directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV);
+                atdma->dma_common.residue_granularity = DMA_RESIDUE_GRANULARITY_BURST;
         }
 
         dma_writel(atdma, EN, AT_DMA_ENABLE);