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ASoC: renesas: msiof: ignore 1st FSERR

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Renesas have tried to minimize the occurrence of FSERR errors as much as
possible, but unfortunately we cannot remove them completely, because
MSIOF might setup its register during CLK/SYNC are inputed. It can be
happen because MSIOF is working as Clock/Frame Consumer.

Ignore 1st FSERR which we can do nothing

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: Yusuke Goda <yusuke.goda.sx@renesas.com>
Link: https://patch.msgid.link/874isryutg.wl-kuninori.morimoto.gx@renesas.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto 2025-09-25 05:17:47 +00:00 committed by Mark Brown
parent 8c363f61e5
commit e26387e950
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GPG Key ID: 24D68B725D5487D0
1 changed files with 26 additions and 2 deletions
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28
sound/soc/renesas/rcar/msiof.c
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@ -65,6 +65,16 @@
* how Codec driver start it.
*/
/*
* [NOTE-FSERR]
*
* We can't remove all FSERR.
*
* Renesas have tried to minimize the occurrence of FSERR errors as much as possible, but
* unfortunately we cannot remove them completely, because MSIOF might setup its register during
* CLK/SYNC are inputed. It can be happen because MSIOF is working as Clock/Frame Consumer.
*/
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_dma.h>
@ -186,8 +196,13 @@ static int msiof_hw_start(struct snd_soc_component *component,
priv->count++;
/* reset errors */
priv->err_syc[substream->stream] =
/*
* Reset errors. ignore 1st FSERR
*
* see
* [NOTE-FSERR]
*/
priv->err_syc[substream->stream] = -1;
priv->err_ovf[substream->stream] =
priv->err_udf[substream->stream] = 0;
@ -279,6 +294,15 @@ static int msiof_hw_stop(struct snd_soc_component *component,
/* Stop DMAC */
snd_dmaengine_pcm_trigger(substream, cmd);
/*
* Ignore 1st FSERR
*
* see
* [NOTE-FSERR]
*/
if (priv->err_syc[substream->stream] < 0)
priv->err_syc[substream->stream] = 0;
/* indicate error status if exist */
if (priv->err_syc[substream->stream] ||
priv->err_ovf[substream->stream] ||