From 6ddf611219ba8f7c8fa0d26b39710a641e7d37a5 Mon Sep 17 00:00:00 2001
From: Shengjiu Wang <shengjiu.wang@nxp.com>
Date: Thu, 10 Mar 2022 10:37:43 +0800
Subject: [PATCH] ASoC: fsl_spdif: Disable TX clock when stop
Git-commit: 6ddf611219ba8f7c8fa0d26b39710a641e7d37a5
Patch-mainline: v5.18-rc1
References: git-fixes
The TX clock source may be changed in next case, need to
disable it when stop, otherwise the TX may not work after
changing the clock source, error log is:
Aplay: pcm_write:2058: write error: Input/output error
Fixes: a2388a498ad2 ("ASoC: fsl: Add S/PDIF CPU DAI driver")
Signed-off-by: Shengjiu Wang <shengjiu.wang@nxp.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/1646879863-27711-1-git-send-email-shengjiu.wang@nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
sound/soc/fsl/fsl_spdif.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/sound/soc/fsl/fsl_spdif.c b/sound/soc/fsl/fsl_spdif.c
index e0acce6b2213..b502e7c3c04d 100644
--- a/sound/soc/fsl/fsl_spdif.c
+++ b/sound/soc/fsl/fsl_spdif.c
@@ -610,6 +610,8 @@ static void fsl_spdif_shutdown(struct snd_pcm_substream *substream,
mask = SCR_TXFIFO_AUTOSYNC_MASK | SCR_TXFIFO_CTRL_MASK |
SCR_TXSEL_MASK | SCR_USRC_SEL_MASK |
SCR_TXFIFO_FSEL_MASK;
+ /* Disable TX clock */
+ regmap_update_bits(regmap, REG_SPDIF_STC, STC_TXCLK_ALL_EN_MASK, 0);
} else {
scr = SCR_RXFIFO_OFF | SCR_RXFIFO_CTL_ZERO;
mask = SCR_RXFIFO_FSEL_MASK | SCR_RXFIFO_AUTOSYNC_MASK|
--
2.31.1