Unverified Commit 2495ba26 authored by Sascha Hauer's avatar Sascha Hauer Committed by Mark Brown
Browse files

ASoC: fsl_micfil: add multi fifo support 



The micfil hardware provides the microphone data on multiple successive
FIFO registers, one register per stereo pair. Also to work properly the
SDMA_DONE0_CONFIG_DONE_SEL bit in the SDMA engines SDMA_DONE0_CONFIG
register must be set. This patch provides the necessary information to
the SDMA engine driver.

Signed-off-by: default avatarSascha Hauer <s.hauer@pengutronix.de>
Acked-by: default avatarShengjiu Wang <shengjiu.wang@gmail.com>
Link: https://lore.kernel.org/r/20220414162249.3934543-13-s.hauer@pengutronix.de


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 824a0a02

sound/soc/fsl/fsl_micfil.c

+6 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ 
#include <linux/regmap.h>

#include <linux/sysfs.h>

#include <linux/types.h>

#include <linux/dma/imx-dma.h>

#include <sound/dmaengine_pcm.h>

#include <sound/pcm.h>

#include <sound/soc.h>
@@ -35,6 +36,7 @@ struct fsl_micfil { 
	struct clk *busclk;

	struct clk *mclk;

	struct snd_dmaengine_dai_dma_data dma_params_rx;

	struct sdma_peripheral_config sdmacfg;

	unsigned int dataline;

	char name[32];

	int irq[MICFIL_IRQ_LINES];
@@ -324,6 +326,10 @@ static int fsl_micfil_hw_params(struct snd_pcm_substream *substream, 
		return ret;

	}



	micfil->dma_params_rx.peripheral_config = &micfil->sdmacfg;

	micfil->dma_params_rx.peripheral_size = sizeof(micfil->sdmacfg);

	micfil->sdmacfg.n_fifos_src = channels;

	micfil->sdmacfg.sw_done = true;

	micfil->dma_params_rx.maxburst = channels * MICFIL_DMA_MAXBURST_RX;



	return 0;