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ASoC: Davinci: McASP: Flush the FIFO before enabling
FIFO should be flushed before it is enabled for the first time. This fixes the I/O errors reported by the ASoC core on a fresh boot Signed-off-by: Vaibhav Bedia <vaibhav.bedia@ti.com> Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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0865a75d41
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1 changed files with 8 additions and 2 deletions
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@ -380,14 +380,20 @@ static void mcasp_start_tx(struct davinci_audio_dev *dev)
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static void davinci_mcasp_start(struct davinci_audio_dev *dev, int stream)
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{
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if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
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if (dev->txnumevt) /* enable FIFO */
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if (dev->txnumevt) { /* enable FIFO */
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mcasp_clr_bits(dev->base + DAVINCI_MCASP_WFIFOCTL,
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FIFO_ENABLE);
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mcasp_set_bits(dev->base + DAVINCI_MCASP_WFIFOCTL,
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FIFO_ENABLE);
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}
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mcasp_start_tx(dev);
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} else {
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if (dev->rxnumevt) /* enable FIFO */
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if (dev->rxnumevt) { /* enable FIFO */
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mcasp_clr_bits(dev->base + DAVINCI_MCASP_RFIFOCTL,
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FIFO_ENABLE);
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mcasp_set_bits(dev->base + DAVINCI_MCASP_RFIFOCTL,
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FIFO_ENABLE);
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}
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mcasp_start_rx(dev);
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}
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}
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