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

Message ID 1359030931-27354-2-git-send-email-rcsekar@samsung.com (mailing list archive)
State New, archived
Headers show

Commit Message

Chandrasekar R Jan. 24, 2013, 12:35 p.m. UTC 
From: Padmavathi Venna <padma.v@samsung.com>

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>
---
 sound/soc/samsung/i2s.c |    3 +++
 1 file changed, 3 insertions(+)

Comments

Mark Brown Jan. 26, 2013, 7:25 a.m. UTC | #1 
On Thu, Jan 24, 2013 at 06:05:31PM +0530, R. Chandrasekar wrote:
> From: Padmavathi Venna <padma.v@samsung.com>
> 
> 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.

Applied, thanks.  Please use subject lines matching the subsystem.
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Patch

diff --git a/sound/soc/samsung/i2s.c b/sound/soc/samsung/i2s.c
index 27a5ab1..9f098cd 100644
--- a/sound/soc/samsung/i2s.c
+++ b/sound/soc/samsung/i2s.c
@@ -651,6 +651,9 @@  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;