ASoC: Samsung: Add I2S S/W RST in startup function

I2S module need to be reset after S2R. Keeping the S/W rst
control part in resume didn't help in playing audio after resume.
So this patch adds S/W RST control part in startup function which
gets triggered for every new audio stream playback.

Signed-off-by: Padmavathi Venna <padma.v@samsung.com>
Signed-off-by: R. Chandrasekar <rcsekar@samsung.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index ed5eeae6a48f..808df74c3248 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -656,6 +656,9 @@ static int i2s_startup(struct snd_pcm_substream *substream,
         /* Enforce set_sysclk in Master mode */
         i2s->rclk_srcrate = 0;
 
+        if (!any_active(i2s) && (i2s->quirks & QUIRK_NEED_RSTCLR))
+                writel(CON_RSTCLR, i2s->addr + I2SCON);
+
         spin_unlock_irqrestore(&lock, flags);
 
         return 0;