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| author | Vaibhav Bedia <vaibhav.bedia@ti.com> | 2012-08-08 20:40:31 +0530 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-08-09 14:05:47 +0100 |
| commit | 0d624275720a4b01217693eb80d967a0d5f1f3a3 (patch) | |
| tree | 1e3233645b1cb23bfca4e5b4c81359535679c3a3 /sound | |
| parent | 0865a75d4166bddc533fd50831829ceefb94f9b0 (diff) | |
| download | linux-3.10-0d624275720a4b01217693eb80d967a0d5f1f3a3.tar.gz linux-3.10-0d624275720a4b01217693eb80d967a0d5f1f3a3.tar.bz2 linux-3.10-0d624275720a4b01217693eb80d967a0d5f1f3a3.zip | |
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>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/davinci/davinci-mcasp.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c index 95441bfc819..ce5e5cd254d 100644 --- a/sound/soc/davinci/davinci-mcasp.c +++ b/sound/soc/davinci/davinci-mcasp.c @@ -380,14 +380,20 @@ static void mcasp_start_tx(struct davinci_audio_dev *dev) static void davinci_mcasp_start(struct davinci_audio_dev *dev, int stream) { if (stream == SNDRV_PCM_STREAM_PLAYBACK) { - if (dev->txnumevt) /* enable FIFO */ + if (dev->txnumevt) { /* enable FIFO */ + mcasp_clr_bits(dev->base + DAVINCI_MCASP_WFIFOCTL, + FIFO_ENABLE); mcasp_set_bits(dev->base + DAVINCI_MCASP_WFIFOCTL, FIFO_ENABLE); + } mcasp_start_tx(dev); } else { - if (dev->rxnumevt) /* enable FIFO */ + if (dev->rxnumevt) { /* enable FIFO */ + mcasp_clr_bits(dev->base + DAVINCI_MCASP_RFIFOCTL, + FIFO_ENABLE); mcasp_set_bits(dev->base + DAVINCI_MCASP_RFIFOCTL, FIFO_ENABLE); + } mcasp_start_rx(dev); } } |