We see odd FIFO overruns with this, we assume the best thing to do is to disable the RX I2S frontend first, and then disable the FIFO that is using it.
This also fixes an issue where using multi-word frames (TDM) have partial samples stuck in the FIFO which then get read out when the next capture is started.
Signed-off-by: Ben Dooks ben.dooks@codethink.co.uk --- sound/soc/tegra/tegra30_i2s.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/sound/soc/tegra/tegra30_i2s.c b/sound/soc/tegra/tegra30_i2s.c index 0fee59171d3b..c573151da341 100644 --- a/sound/soc/tegra/tegra30_i2s.c +++ b/sound/soc/tegra/tegra30_i2s.c @@ -236,9 +236,9 @@ static void tegra30_i2s_start_capture(struct tegra30_i2s *i2s)
static void tegra30_i2s_stop_capture(struct tegra30_i2s *i2s) { - tegra30_ahub_disable_rx_fifo(i2s->capture_fifo_cif); regmap_update_bits(i2s->regmap, TEGRA30_I2S_CTRL, TEGRA30_I2S_CTRL_XFER_EN_RX, 0); + tegra30_ahub_disable_rx_fifo(i2s->capture_fifo_cif); }
static int tegra30_i2s_trigger(struct snd_pcm_substream *substream, int cmd,