This is a note to let you know that I've just added the patch titled
ASoC: fsl_spdif: Silence output on stop
to the 4.19-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
asoc-fsl_spdif-silence-output-on-stop.patch
and it can be found in the queue-4.19 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit e4801c47021782c7e5ac399fb568ec62da981b08
Author: Matus Gajdos <matuszpd@xxxxxxxxx>
Date: Wed Jul 19 18:47:29 2023 +0200
ASoC: fsl_spdif: Silence output on stop
[ Upstream commit 0e4c2b6b0c4a4b4014d9424c27e5e79d185229c5 ]
Clear TX registers on stop to prevent the SPDIF interface from sending
last written word over and over again.
Fixes: a2388a498ad2 ("ASoC: fsl: Add S/PDIF CPU DAI driver")
Signed-off-by: Matus Gajdos <matuszpd@xxxxxxxxx>
Reviewed-by: Fabio Estevam <festevam@xxxxxxxxx>
Link: https://lore.kernel.org/r/20230719164729.19969-1-matuszpd@xxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c
index 740b90df44bb5..0a1ba64ed63cf 100644
--- a/sound/soc/fsl/fsl_spdif.c
+++ b/sound/soc/fsl/fsl_spdif.c
@@ -614,6 +614,8 @@ static int fsl_spdif_trigger(struct snd_pcm_substream *substream,
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
regmap_update_bits(regmap, REG_SPDIF_SCR, dmaen, 0);
regmap_update_bits(regmap, REG_SPDIF_SIE, intr, 0);
+ regmap_write(regmap, REG_SPDIF_STL, 0x0);
+ regmap_write(regmap, REG_SPDIF_STR, 0x0);
break;
default:
return -EINVAL;
