[alsa-devel] Applied "ASoC: amd: Fix simultaneous playback and capture" to the asoc tree

[Mark Brown]

The patch

   ASoC: amd: Fix simultaneous playback and capture

has been applied to the asoc tree at

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.6

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.  

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark

>From 67e69e1d46becd934a03489c38fc42bb2510c1c6 Mon Sep 17 00:00:00 2001
From: Akshu Agrawal <akshu.agrawal at amd.com>
Date: Tue, 28 Jan 2020 16:00:22 +0530
Subject: [PATCH] ASoC: amd: Fix simultaneous playback and capture

Stopping of one stream is killing the other stream when they
are running simultaneously. This is because, IER register is
cleared which disables I2S and overrides any other block enables.

Clearing IER register only when all streams on a channel are disabled,
fixes the issue.

Signed-off-by: Akshu Agrawal <akshu.agrawal at amd.com>
Link: https://lore.kernel.org/r/20200128103029.128841-1-akshu.agrawal@amd.com
Signed-off-by: Mark Brown <broonie at kernel.org>
---
 sound/soc/amd/raven/acp3x-i2s.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/sound/soc/amd/raven/acp3x-i2s.c b/sound/soc/amd/raven/acp3x-i2s.c
index bf51cadf8682..31cd4008e33f 100644
--- a/sound/soc/amd/raven/acp3x-i2s.c
+++ b/sound/soc/amd/raven/acp3x-i2s.c
@@ -234,30 +234,32 @@ static int acp3x_i2s_trigger(struct snd_pcm_substream *substream,
 			switch (rtd->i2s_instance) {
 			case I2S_BT_INSTANCE:
 				reg_val = mmACP_BTTDM_ITER;
-				ier_val = mmACP_BTTDM_IER;
 				break;
 			case I2S_SP_INSTANCE:
 			default:
 				reg_val = mmACP_I2STDM_ITER;
-				ier_val = mmACP_I2STDM_IER;
 			}
 
 		} else {
 			switch (rtd->i2s_instance) {
 			case I2S_BT_INSTANCE:
 				reg_val = mmACP_BTTDM_IRER;
-				ier_val = mmACP_BTTDM_IER;
 				break;
 			case I2S_SP_INSTANCE:
 			default:
 				reg_val = mmACP_I2STDM_IRER;
-				ier_val = mmACP_I2STDM_IER;
 			}
 		}
 		val = rv_readl(rtd->acp3x_base + reg_val);
 		val = val & ~BIT(0);
 		rv_writel(val, rtd->acp3x_base + reg_val);
-		rv_writel(0, rtd->acp3x_base + ier_val);
+
+		if (!(rv_readl(rtd->acp3x_base + mmACP_BTTDM_ITER) & BIT(0)) &&
+		     !(rv_readl(rtd->acp3x_base + mmACP_BTTDM_IRER) & BIT(0)))
+			rv_writel(0, rtd->acp3x_base + mmACP_BTTDM_IER);
+		if (!(rv_readl(rtd->acp3x_base + mmACP_I2STDM_ITER) & BIT(0)) &&
+		     !(rv_readl(rtd->acp3x_base + mmACP_I2STDM_IRER) & BIT(0)))
+			rv_writel(0, rtd->acp3x_base + mmACP_I2STDM_IER);
 		ret = 0;
 		break;
 	default:
-- 
2.20.1