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ASoC: fsl_micfil: add multi fifo support

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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: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Shengjiu Wang <shengjiu.wang@gmail.com>
Link: https://lore.kernel.org/r/20220414162249.3934543-13-s.hauer@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sascha Hauer 2022-04-14 18:22:40 +02:00 committed by Mark Brown
parent 824a0a02cd
commit 2495ba26e8
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 6 additions and 0 deletions
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6
sound/soc/fsl/fsl_micfil.c
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@ -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;