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ASoC: atmel_ssc_dai: Don't unconditionally reset SSC on stream startup 

commit cbaadf0f90 ("ASoC: atmel_ssc_dai: refactor the startup and
shutdown") refactored code such that the SSC is reset on every
startup; this breaks duplex audio (e.g. first start audio playback,
then start record, causing the playback to stop/hang)

Fixes: cbaadf0f90 (ASoC: atmel_ssc_dai: refactor the startup and shutdown)
Signed-off-by: Christoph Huber <c.huber@bct-electronic.com>
Signed-off-by: Peter Meerwald-Stadler <p.meerwald@bct-electronic.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
This commit is contained in:
Christoph Huber 2016-08-15 18:59:25 +02:00 committed by Mark Brown
parent 29b4817d40
commit 3e103a6551
1 changed files with 3 additions and 2 deletions
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5
sound/soc/atmel/atmel_ssc_dai.c
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@ -299,8 +299,9 @@ static int atmel_ssc_startup(struct snd_pcm_substream *substream,
clk_enable(ssc_p->ssc->clk); clk_enable(ssc_p->ssc->clk);
ssc_p->mck_rate = clk_get_rate(ssc_p->ssc->clk); ssc_p->mck_rate = clk_get_rate(ssc_p->ssc->clk);
/* Reset the SSC to keep it at a clean status */ /* Reset the SSC unless initialized to keep it in a clean state */
ssc_writel(ssc_p->ssc->regs, CR, SSC_BIT(CR_SWRST)); if (!ssc_p->initialized)
ssc_writel(ssc_p->ssc->regs, CR, SSC_BIT(CR_SWRST));
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
dir = 0; dir = 0;