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Unverified Commit 47a70e6f authored by Cosmin Samoila's avatar Cosmin Samoila Committed by Mark Brown
Browse files

ASoC: Add MICFIL SoC Digital Audio Interface driver. 



Add Digital Audio Interface driver that convers PDM bitstream to PCM
format.

Features:
- Fixed filtering characteristics for audio application.
- Full or partial set of channels operation with individual enable control.
- Programmable PDM clock generator.
- Programmable decimation rate.
- 16-bit signed output result.
- Overall stopband attenuation more than 80dB.
- Overall passband ripple less than 0.2dB.

Signed-off-by: default avatarCosmin-Gabriel Samoila <cosmin.samoila@nxp.com>
Signed-off-by: default avatarShengjiu Wang <shengjiu.wang@nxp.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent e595da28

sound/soc/fsl/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -57,6 +57,15 @@ config SND_SOC_FSL_ESAI 
	  This option is only useful for out-of-tree drivers since

	  in-tree drivers select it automatically.



config SND_SOC_FSL_MICFIL

	tristate "Pulse Density Modulation Microphone Interface (MICFIL) module support"

	select REGMAP_MMIO

	select SND_SOC_IMX_PCM_DMA if SND_IMX_SOC != n

	select SND_SOC_GENERIC_DMAENGINE_PCM

	help

	  Say Y if you want to add Pulse Density Modulation microphone

	  interface (MICFIL) support for NXP.



config SND_SOC_FSL_UTILS

	tristate

sound/soc/fsl/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ snd-soc-fsl-ssi-y := fsl_ssi.o 
snd-soc-fsl-ssi-$(CONFIG_DEBUG_FS) += fsl_ssi_dbg.o

snd-soc-fsl-spdif-objs := fsl_spdif.o

snd-soc-fsl-esai-objs := fsl_esai.o

snd-soc-fsl-micfil-objs := fsl_micfil.o

snd-soc-fsl-utils-objs := fsl_utils.o

snd-soc-fsl-dma-objs := fsl_dma.o

obj-$(CONFIG_SND_SOC_FSL_ASOC_CARD) += snd-soc-fsl-asoc-card.o
@@ -27,6 +28,7 @@ obj-$(CONFIG_SND_SOC_FSL_SAI) += snd-soc-fsl-sai.o 
obj-$(CONFIG_SND_SOC_FSL_SSI) += snd-soc-fsl-ssi.o

obj-$(CONFIG_SND_SOC_FSL_SPDIF) += snd-soc-fsl-spdif.o

obj-$(CONFIG_SND_SOC_FSL_ESAI) += snd-soc-fsl-esai.o

obj-$(CONFIG_SND_SOC_FSL_MICFIL) += snd-soc-fsl-micfil.o

obj-$(CONFIG_SND_SOC_FSL_UTILS) += snd-soc-fsl-utils.o

obj-$(CONFIG_SND_SOC_POWERPC_DMA) += snd-soc-fsl-dma.o

sound/soc/fsl/fsl_micfil.c

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+826 −0

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sound/soc/fsl/fsl_micfil.h

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+283 −0

File added.

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