ASoC: rsnd: care DMA slave channel name for DT
authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Fri, 23 May 2014 06:25:49 +0000 (23:25 -0700)
committerMark Brown <broonie@linaro.org>
Mon, 26 May 2014 13:34:55 +0000 (14:34 +0100)
commit199e7688bdf7d188d70c3432c96ec13d8a14b341
tree83d554725355eed03dd92393121d784565e74a9a
parent8aefda5046f417c551e3acdeb2cf37949a4b75e9
ASoC: rsnd: care DMA slave channel name for DT

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>
Documentation/devicetree/bindings/sound/renesas,rsnd.txt
sound/soc/sh/rcar/core.c
sound/soc/sh/rcar/ssi.c