ASoC: rsnd: care DMA slave channel name for DT

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Renesas sound driver is supporting to use DMAEngine.
But, DMA slave channel name "tx", "rx" is not enough
in DT case.
Becuase, it has many ports and path combination.

This patch adds rsnd_dma_of_name() to find
DMA channel name, for example
memory to SSI0 is "mem_ssi0",
SSI0 to memory is "ssi0_mem",
SSI0 to SRC0   is "ssi0_src0",
SRC0 to SSI0   is "src0_ssi0",
SRC0 to DVC0   is "src0_dvc0"...

Renesas sound want to use PIO transfer mode for some reasons.
It will be PIO tranfer mode if device node doesn't have
DMA settings.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

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This commit is contained in:

Kuninori Morimoto 2014-05-22 23:25:49 -07:00 • committed by Mark Brown

parent 8aefda5046

commit 199e7688bd

3 changed files with 86 additions and 1 deletions

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1

Documentation/devicetree/bindings/sound/renesas,rsnd.txt

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80

sound/soc/sh/rcar/core.c

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6

sound/soc/sh/rcar/ssi.c

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