diff options
| author | Nicolin Chen <nicoleotsuka@gmail.com> | 2014-07-17 13:21:37 (GMT) |
|---|---|---|
| committer | Mark Brown <broonie@linaro.org> | 2014-07-17 17:10:41 (GMT) |
| commit | eff952b733d4c1ff3a6b35accce940b223372978 (patch) | |
| tree | 0ca507468b33225ab4b6acbe58c9585b02d70d8b /sound/soc/fsl/fsl_sai.c | |
| parent | 7171511eaec5bf23fb06078f59784a3a0626b38f (diff) | |
| download | linux-eff952b733d4c1ff3a6b35accce940b223372978.tar.xz | |
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: Nicolin Chen <nicoleotsuka@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'sound/soc/fsl/fsl_sai.c')
| -rw-r--r-- | sound/soc/fsl/fsl_sai.c | 7 |
1 files 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: |