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ranj063 wants to merge 3 commits into from
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Trace fixes #3166

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3bb2f4b
ASoC: SOF: trace: no need to wake_up() after stopping
ranj063 Sep 17, 2021
78a8ed4
ASoC: SOF: trace: release trace when suspending to D0i3
ranj063 Sep 17, 2021
1328342
ASoC: SOF: Intel: hda: reset dma_sata during suspend
ranj063 Sep 18, 2021
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16 changes: 10 additions & 6 deletions sound/soc/sof/intel/hda-dai.c
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Original file line numberDiff line numberDiff line change
Expand Up@@ -279,7 +279,7 @@ static int hda_link_pcm_prepare(struct snd_pcm_substream *substream,
struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);

@kv2019ikv2019iSep 20, 2021

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typo in commit: dma_sata in subject

int stream = substream->stream;

if (link_dev->link_prepared)
if (link_dev && link_dev->link_prepared)
return 0;

dev_dbg(sdev->dev, "hda: prepare stream dir %d\n", substream->stream);
Expand All@@ -306,6 +306,10 @@ static int hda_link_pcm_trigger(struct snd_pcm_substream *substream,
bus = hstream->bus;
rtd = asoc_substream_to_rtd(substream);

/* when paused streams are never released after system resume, link_dev would be NULL. */
if (!link_dev)
return 0;

link = snd_hdac_ext_bus_get_link(bus, asoc_rtd_to_codec(rtd, 0)->component->name);
if (!link)
return -EINVAL;
Expand DownExpand Up@@ -347,7 +351,10 @@ static int hda_link_pcm_trigger(struct snd_pcm_substream *substream,
snd_hdac_ext_link_clear_stream_id(link, stream_tag);
}

snd_soc_dai_set_dma_data(dai, substream, NULL);
snd_hdac_ext_stream_release(link_dev, HDAC_EXT_STREAM_TYPE_LINK);
link_dev->link_prepared = 0;
hda_stream->host_reserved = 0;

fallthrough;
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
Expand DownExpand Up@@ -377,11 +384,8 @@ static int hda_link_hw_free(struct snd_pcm_substream *substream,
rtd = asoc_substream_to_rtd(substream);
link_dev = snd_soc_dai_get_dma_data(dai, substream);

if (!link_dev) {
dev_dbg(dai->dev,
"%s: link_dev is not assigned\n", __func__);
return -EINVAL;
}
if (!link_dev)
return 0;

hda_stream = hstream_to_sof_hda_stream(link_dev);

Expand Down
12 changes: 10 additions & 2 deletions sound/soc/sof/intel/hda-dsp.c
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Expand Up@@ -904,6 +904,7 @@ int hda_dsp_set_hw_params_upon_resume(struct snd_sof_dev *sdev)
{
#if IS_ENABLED(CONFIG_SND_SOC_SOF_HDA)
struct hdac_bus *bus = sof_to_bus(sdev);
struct sof_intel_hda_stream *hda_stream;
struct snd_soc_pcm_runtime *rtd;
struct hdac_ext_stream *stream;
struct hdac_ext_link *link;
Expand All@@ -922,16 +923,23 @@ int hda_dsp_set_hw_params_upon_resume(struct snd_sof_dev *sdev)
* explicitly during suspend.
*/
if (stream->link_substream) {
struct snd_soc_dai *cpu_dai;

rtd = asoc_substream_to_rtd(stream->link_substream);
cpu_dai = asoc_rtd_to_cpu(rtd, 0);
name = asoc_rtd_to_codec(rtd, 0)->component->name;
link = snd_hdac_ext_bus_get_link(bus, name);
if (!link)
return -EINVAL;

snd_soc_dai_set_dma_data(cpu_dai, stream->link_substream, NULL);
snd_hdac_ext_stream_release(stream, HDAC_EXT_STREAM_TYPE_LINK);
stream->link_prepared = 0;

if (hdac_stream(stream)->direction ==
SNDRV_PCM_STREAM_CAPTURE)
hda_stream = hstream_to_sof_hda_stream(stream);
hda_stream->host_reserved = 0;

if (hdac_stream(stream)->direction == SNDRV_PCM_STREAM_CAPTURE)
continue;

stream_tag = hdac_stream(stream)->stream_tag;
Expand Down
19 changes: 11 additions & 8 deletions sound/soc/sof/pm.c
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Original file line numberDiff line numberDiff line change
Expand Up@@ -114,13 +114,16 @@ static int sof_resume(struct device *dev, bool runtime_resume)
return ret;
}

/*
* Nothing further to be done for platforms that support the low power
* D0 substate.
*/
/* Only resume trace when resuming from low-power D0 substate */
if (!runtime_resume && sof_ops(sdev)->set_power_state &&
old_state == SOF_DSP_PM_D0)
old_state == SOF_DSP_PM_D0) {
/* this is not fatal */
ret = snd_sof_init_trace_ipc(sdev);
if (ret < 0)
dev_warn(sdev->dev, "failed to init trace after resume %d\n", ret);

return 0;
}

sdev->fw_state = SOF_FW_BOOT_PREPARE;

Expand DownExpand Up@@ -204,15 +207,15 @@ static int sof_suspend(struct device *dev, bool runtime_suspend)

target_state = snd_sof_dsp_power_target(sdev);

/* release trace */
snd_sof_release_trace(sdev);

/* Skip to platform-specific suspend if DSP is entering D0 */
if (target_state == SOF_DSP_PM_D0)
goto suspend;

sof_tear_down_pipelines(sdev, false);

/* release trace */
snd_sof_release_trace(sdev);

#if IS_ENABLED(CONFIG_SND_SOC_SOF_DEBUG_ENABLE_DEBUGFS_CACHE)
/* cache debugfs contents during runtime suspend */
if (runtime_suspend)
Expand Down
1 change: 0 additions & 1 deletion sound/soc/sof/trace.c
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Expand Up@@ -556,7 +556,6 @@ void snd_sof_release_trace(struct snd_sof_dev *sdev)

sdev->dtrace_is_enabled = false;
sdev->dtrace_draining = true;
wake_up(&sdev->trace_sleep);
}

@kv2019ikv2019iSep 20, 2021

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Hmm, how can you be sure the user-space thread is not in sof_wait_trace_avail() ? The release trace can be called when sof-logger is still running and waiting for traces.

EXPORT_SYMBOL(snd_sof_release_trace);

Expand Down