SAI will not clear their FIFOs after disabling TE/RE. Therfore, the driver
should take care the task so as not to let useless data remain in the FIFO.
Signed-off-by: Nicolin Chen <nicoleots...@gmail.com>
---
sound/soc/fsl/fsl_sai.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c
index c5a0e8a..b10dbd8 100644
--- a/sound/soc/fsl/fsl_sai.c
+++ b/sound/soc/fsl/fsl_sai.c
@@ -371,10 +371,13 @@ static int fsl_sai_trigger(struct snd_pcm_substream
*substream, int cmd,
/* Check if the opposite FRDE is also disabled */
if (!(tx ? rcsr & FSL_SAI_CSR_FRDE : tcsr & FSL_SAI_CSR_FRDE)) {
+ /* Disable both directions and reset their FIFOs */
regmap_update_bits(sai->regmap, FSL_SAI_TCSR,
- FSL_SAI_CSR_TERE, 0);
+ FSL_SAI_CSR_TERE | FSL_SAI_CSR_FR,
+ FSL_SAI_CSR_FR);
regmap_update_bits(sai->regmap, FSL_SAI_RCSR,
- FSL_SAI_CSR_TERE, 0);
+ FSL_SAI_CSR_TERE | FSL_SAI_CSR_FR,
+ FSL_SAI_CSR_FR);
}
break;
default:
--
1.8.4
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