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Commit eff952b7 authored by Nicolin Chen's avatar Nicolin Chen Committed by Mark Brown
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ASoC: fsl_sai: Reset FIFOs after disabling TE/RE 



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: default avatarNicolin Chen <nicoleotsuka@gmail.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 7171511e

sound/soc/fsl/fsl_sai.c

+5 −2
Original line number Diff line number Diff line
@@ -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: