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ASoC: SOF: Intel: hda: Always clean up link DMA during stop

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This is required to reset the DMA read/write pointers when the stream is
prepared and restarted after a call to snd_pcm_drain()/snd_pcm_drop().
Also, now that the stream is reset during stop, do not save LLP registers
in the case of STOP/suspend to avoid erroneous delay reporting.

Link: https://github.com/thesofproject/sof/issues/9502
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Reviewed-by: Péter Ujfalusi <peter.ujfalusi@linux.intel.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com>
All: stable@vger.kernel.org # 6.10.x 6.11.x
Link: https://patch.msgid.link/20241016032910.14601-5-yung-chuan.liao@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Ranjani Sridharan 2024-10-16 11:29:10 +08:00 committed by Mark Brown
parent c78f1e15e4
commit ab5593793e
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
2 changed files with 11 additions and 13 deletions
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23
sound/soc/sof/intel/hda-dai-ops.c
View File

@ -346,20 +346,21 @@ static int hda_trigger(struct snd_sof_dev *sdev, struct snd_soc_dai *cpu_dai,
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
snd_hdac_ext_stream_start(hext_stream);
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
snd_hdac_ext_stream_clear(hext_stream);
/*
* Save the LLP registers in case the stream is
* restarting due PAUSE_RELEASE, or START without a pcm
* close/open since in this case the LLP register is not reset
* to 0 and the delay calculation will return with invalid
* results.
* Save the LLP registers since in case of PAUSE the LLP
* register are not reset to 0, the delay calculation will use
* the saved offsets for compensating the delay calculation.
*/
hext_stream->pplcllpl = readl(hext_stream->pplc_addr + AZX_REG_PPLCLLPL);
hext_stream->pplcllpu = readl(hext_stream->pplc_addr + AZX_REG_PPLCLLPU);
snd_hdac_ext_stream_clear(hext_stream);
break;
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_STOP:
hext_stream->pplcllpl = 0;
hext_stream->pplcllpu = 0;
snd_hdac_ext_stream_clear(hext_stream);
break;
default:
dev_err(sdev->dev, "unknown trigger command %d\n", cmd);
@ -512,7 +513,6 @@ static const struct hda_dai_widget_dma_ops sdw_ipc4_chain_dma_ops = {
static int hda_ipc3_post_trigger(struct snd_sof_dev *sdev, struct snd_soc_dai *cpu_dai,
struct snd_pcm_substream *substream, int cmd)
{
struct hdac_ext_stream *hext_stream = hda_get_hext_stream(sdev, cpu_dai, substream);
struct snd_soc_dapm_widget *w = snd_soc_dai_get_widget(cpu_dai, substream->stream);
switch (cmd) {
@ -527,9 +527,6 @@ static int hda_ipc3_post_trigger(struct snd_sof_dev *sdev, struct snd_soc_dai *c
if (ret < 0)
return ret;
if (cmd == SNDRV_PCM_TRIGGER_STOP)
return hda_link_dma_cleanup(substream, hext_stream, cpu_dai);
break;
}
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:

1
sound/soc/sof/intel/hda-dai.c
View File

@ -302,6 +302,7 @@ static int __maybe_unused hda_dai_trigger(struct snd_pcm_substream *substream, i
}
switch (cmd) {
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
ret = hda_link_dma_cleanup(substream, hext_stream, dai);
if (ret < 0) {