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Commit a731e217 authored by Rongjun Ying's avatar Rongjun Ying Committed by Mark Brown
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ASoC: sirf: Add SiRF audio port driver is used by SiRF internal audio codec 



This driver is used by SIRF internal audio codec.
Use dedicated SiRF audio port TXFIFO and RXFIFO
Supports two DMA channels for SiRF audio port TXFIFO and RXFIFO
The audio port like as audio bus such as i2s.

Signed-off-by: default avatarRongjun Ying <rongjun.ying@csr.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent f516e368

Documentation/devicetree/bindings/sound/sirf-audio-port.txt

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* SiRF SoC audio port



Required properties:

- compatible: "sirf,audio-port"

- reg: Base address and size entries:

- dmas: List of DMA controller phandle and DMA request line ordered pairs.

- dma-names: Identifier string for each DMA request line in the dmas property.

  These strings correspond 1:1 with the ordered pairs in dmas.



  One of the DMA channels will be responsible for transmission (should be

  named "tx") and one for reception (should be named "rx").



Example:



audioport: audioport@b0040000 {

	compatible = "sirf,audio-port";

	reg = <0xb0040000 0x10000>;

	dmas = <&dmac1 3>, <&dmac1 8>;

	dma-names = "rx", "tx";

};

sound/soc/Kconfig

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@@ -50,6 +50,7 @@ source "sound/soc/pxa/Kconfig" 
source "sound/soc/samsung/Kconfig"

source "sound/soc/s6000/Kconfig"

source "sound/soc/sh/Kconfig"

source "sound/soc/sirf/Kconfig"

source "sound/soc/spear/Kconfig"

source "sound/soc/tegra/Kconfig"

source "sound/soc/txx9/Kconfig"

sound/soc/Makefile

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@@ -27,6 +27,7 @@ obj-$(CONFIG_SND_SOC) += pxa/ 
obj-$(CONFIG_SND_SOC)	+= samsung/

obj-$(CONFIG_SND_SOC)	+= s6000/

obj-$(CONFIG_SND_SOC)	+= sh/

obj-$(CONFIG_SND_SOC)	+= sirf/

obj-$(CONFIG_SND_SOC)	+= spear/

obj-$(CONFIG_SND_SOC)	+= tegra/

obj-$(CONFIG_SND_SOC)	+= txx9/

sound/soc/sirf/Kconfig

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config SND_SOC_SIRF

	tristate "SoC Audio for the SiRF SoC chips"

	depends on ARCH_SIRF || COMPILE_TEST

	select SND_SOC_GENERIC_DMAENGINE_PCM



config SND_SOC_SIRF_AUDIO_PORT

	select REGMAP_MMIO

	tristate

sound/soc/sirf/Makefile

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snd-soc-sirf-audio-port-objs := sirf-audio-port.o



obj-$(CONFIG_SND_SOC_SIRF_AUDIO_PORT) += snd-soc-sirf-audio-port.o