From: Kuninori Morimoto kuninori.morimoto.gx@renesas.com
Current DMAEngine implementation of DT bindings can't support DT subnode. This patch export symbols of of_dma_request_slave_channel() for subnode DMA DT bingings.
ex)
rcar_sound: rcar_sound@ec500000 { ... rcar_sound,dvc { dvc0: dvc@0 { dmas = <&audma0 0xbc>; dma-names = "tx"; }; dvc1: dvc@1 { dmas = <&audma0 0xbe>; dma-names = "tx"; }; }; ... };
Signed-off-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com --- v2 -> v3
- don't remove export from of_dma.h
drivers/dma/of-dma.c | 1 + 1 file changed, 1 insertion(+)
diff --git a/drivers/dma/of-dma.c b/drivers/dma/of-dma.c index ca31f1b..cbd4a8a 100644 --- a/drivers/dma/of-dma.c +++ b/drivers/dma/of-dma.c @@ -194,6 +194,7 @@ struct dma_chan *of_dma_request_slave_channel(struct device_node *np,
return ERR_PTR(ret_no_channel); } +EXPORT_SYMBOL_GPL(of_dma_request_slave_channel);
/** * of_dma_simple_xlate - Simple DMA engine translation function