[PATCH 5/5] ASoC: rsnd: dma: use extended audio dmac registers when available

[Jiada Wang]

Some of SoCs have both basic and extended dmac registers set
basic set only supports busif0 ~ busif3, in order to use
busif4 ~ busif7, extended audio dmac registers need to be used.

This patch changes to use extended dmac registers set when it is
available in device-tree.

Signed-off-by: Jiada Wang <jiada_wang@xxxxxxxxxx>
---
 sound/soc/sh/rcar/dma.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/sound/soc/sh/rcar/dma.c b/sound/soc/sh/rcar/dma.c
index 0324a5c39619..905502ccedba 100644
--- a/sound/soc/sh/rcar/dma.c
+++ b/sound/soc/sh/rcar/dma.c
@@ -830,7 +830,10 @@ int rsnd_dma_probe(struct rsnd_priv *priv)
 	/*
 	 * for Gen2 or later
 	 */
-	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "audmapp");
+	res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "extaudmapp");
+	if (!res)
+		res = platform_get_resource_byname(pdev, IORESOURCE_MEM,
+						   "audmapp");
 	dmac = devm_kzalloc(dev, sizeof(*dmac), GFP_KERNEL);
 	if (!dmac || !res) {
 		dev_err(dev, "dma allocate failed\n");
-- 
2.19.2