[PATCH V3 3/3] dmaengine: dw-axi-dmac: set coherent mask

[pandith.n@xxxxxxxxx]

From: Pandith N <pandith.n@xxxxxxxxx>

Add support for setting dma coherent mask, dma mask is set to 64 bit

Signed-off-by: Pandith N <pandith.n@xxxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>

---

Changes from v1->v2:
Removed dt-binding to set coherent_bit_mask value.
---
 drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
index f46fd9895a13..79572ec532ef 100644
--- a/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
+++ b/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
@@ -212,12 +212,16 @@ static inline bool axi_chan_is_hw_enable(struct axi_dma_chan *chan)
 
 static void axi_dma_hw_init(struct axi_dma_chip *chip)
 {
+	int ret;
 	u32 i;
 
 	for (i = 0; i < chip->dw->hdata->nr_channels; i++) {
 		axi_chan_irq_disable(&chip->dw->chan[i], DWAXIDMAC_IRQ_ALL);
 		axi_chan_disable(&chip->dw->chan[i]);
 	}
+	ret = dma_set_mask_and_coherent(chip->dev, DMA_BIT_MASK(64));
+	if (ret)
+		dev_warn(chip->dev, "Unable to set coherent mask\n");
 }
 
 static u32 axi_chan_get_xfer_width(struct axi_dma_chan *chan, dma_addr_t src,
-- 
2.17.1