ASoC: amd :High hw_level while simultaneous capture

Commit Message

Akshu Agrawal May 6, 2020, 10:26 a.m. UTC

Simultaneous capture on dmic and headset mic is having
issue with high hw_level being reported.

Issue Can be reproduced by:
arecord -D hw:2,0 -f dat -d 60 /tmp/test0 &
arecord -D hw:2,2 -f dat -d 60 /tmp/test1 &
cat /proc/asound/card2/pcm?c/sub0/status

Actual issue is :
When we open one capture stream on one instance lets say I2S_SP and then
once again if we open other capture on other instance lets say I2S_BT while
first capture is in progress and when we try to read the status of both
running instances by below command cat /proc/asound/card2/pcm?c/sub0/status
we observe that avail_max is being doubled on first opened
capture(I2S_SP in the example).

This is because our previous implementation was like when any instance is
opened it gets initialized in dma_open irrespective of on what instance it
called open.

For example:
First I2S_SP called opened it initializes both SP/BT capture streams
irrespective of on which instance the stream opened.next time I2S_BT
called opened and it initializes both SP/BT this corrupts the behaviour .

So with this patch the stream gets initialized only on specific instance
when ever it gets opened calls hw_params.

This rectifies the issue.

Signed-off-by: Ravulapati Vishnu vardhan rao <[e-mail]>
Signed-off-by: Akshu Agrawal <[e-mail]>
---
 sound/soc/amd/raven/acp3x-pcm-dma.c | 37 +++++++++++++++++++----------
 1 file changed, 24 insertions(+), 13 deletions(-)

Comments

Mark Brown May 6, 2020, 1:43 p.m. UTC | #1

On Wed, 6 May 2020 15:56:00 +0530, Akshu Agrawal wrote:
> Simultaneous capture on dmic and headset mic is having
> issue with high hw_level being reported.
> 
> Issue Can be reproduced by:
> arecord -D hw:2,0 -f dat -d 60 /tmp/test0 &
> arecord -D hw:2,2 -f dat -d 60 /tmp/test1 &
> cat /proc/asound/card2/pcm?c/sub0/status
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.7

Thanks!

[1/1] ASoC: amd :High hw_level while simultaneous capture
      commit: 5a8117840a8c654c3cdf2f465e9406112d7e492d

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

Patch

diff --git a/sound/soc/amd/raven/acp3x-pcm-dma.c b/sound/soc/amd/raven/acp3x-pcm-dma.c
index e362f0bc9e46..a36c5cb848cd 100644
--- a/sound/soc/amd/raven/acp3x-pcm-dma.c
+++ b/sound/soc/amd/raven/acp3x-pcm-dma.c
@@ -241,14 +241,6 @@  static int acp3x_dma_open(struct snd_soc_component *component,
 		adata->i2ssp_play_stream && !adata->i2ssp_capture_stream)
 		rv_writel(1, adata->acp3x_base + mmACP_EXTERNAL_INTR_ENB);
 
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		adata->play_stream = substream;
-		adata->i2ssp_play_stream = substream;
-	} else {
-		adata->capture_stream = substream;
-		adata->i2ssp_capture_stream = substream;
-	}
-
 	i2s_data->acp3x_base = adata->acp3x_base;
 	runtime->private_data = i2s_data;
 	return ret;
@@ -263,23 +255,42 @@  static int acp3x_dma_hw_params(struct snd_soc_component *component,
 	struct snd_soc_pcm_runtime *prtd;
 	struct snd_soc_card *card;
 	struct acp3x_platform_info *pinfo;
+	struct i2s_dev_data *adata;
 	u64 size;
 
 	prtd = substream->private_data;
 	card = prtd->card;
 	pinfo = snd_soc_card_get_drvdata(card);
+	adata = dev_get_drvdata(component->dev);
 	rtd = substream->runtime->private_data;
 	if (!rtd)
 		return -EINVAL;
 
-	if (pinfo)
-		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+	if (pinfo) {
+		if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 			rtd->i2s_instance = pinfo->play_i2s_instance;
-		else
+			switch (rtd->i2s_instance) {
+			case I2S_BT_INSTANCE:
+				adata->play_stream = substream;
+				break;
+			case I2S_SP_INSTANCE:
+			default:
+				adata->i2ssp_play_stream = substream;
+			}
+		} else {
 			rtd->i2s_instance = pinfo->cap_i2s_instance;
-	else
+			switch (rtd->i2s_instance) {
+			case I2S_BT_INSTANCE:
+				adata->capture_stream = substream;
+				break;
+			case I2S_SP_INSTANCE:
+			default:
+				adata->i2ssp_capture_stream = substream;
+			}
+		}
+	} else {
 		pr_err("pinfo failed\n");
-
+	}
 	size = params_buffer_bytes(params);
 	rtd->dma_addr = substream->dma_buffer.addr;
 	rtd->num_pages = (PAGE_ALIGN(size) >> PAGE_SHIFT);