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| author |   Ranjani Sridharan <ranjani.sridharan@linux.intel.com> | 2019-04-30 18:09:31 -0500 |
|---|---|---|
| committer |   Mark Brown <broonie@kernel.org> | 2019-05-03 15:01:45 +0900 |
| commit | ed3baacd76baa045fe101ce04a9e46d48c188495 (patch) | |
| tree | efffa3dd505c148ad9f5824c2943ce9f97b552cd /sound/soc/sof/intel/hda-dai.c | |
| parent | ASoC: SOF: Intel: hda-stream: handle real stream interrupts only (diff) | |
| download | linux-dev-ed3baacd76baa045fe101ce04a9e46d48c188495.tar.xz linux-dev-ed3baacd76baa045fe101ce04a9e46d48c188495.zip | |
ASoC: SOF: intel: hda: add hw_params_upon_resume flag for hda stream
The prepare() ioctl for BE dai link gets called both
when the stream is started and when it is resumed from
suspend. SOF uses this ioctl to set the hw params
again only if the stream has been suspended.
When the stream is started, the hw_params ioctl gets called
before prepare() and hw_params is set for the BE dai link.
So the prepare call does not need to do anything further.
When the stream resumes after system suspend, SOF requires
that the hw_params be set again for the BE dai. In order
to determine which streams should set the hw params
during prepare(), an internal flag called "hw_params_upon_resume"
is introduced in struct sof_intel_hda_stream. The flag is set
for hda streams when the sof device suspends and is
cleared after hw_params is set.
Signed-off-by: Ranjani Sridharan <ranjani.sridharan@linux.intel.com>
Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/sof/intel/hda-dai.c')
| -rw-r--r-- | sound/soc/sof/intel/hda-dai.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/sound/soc/sof/intel/hda-dai.c b/sound/soc/sof/intel/hda-dai.c index 830328af19c5..e1decf25aeac 100644 --- a/sound/soc/sof/intel/hda-dai.c +++ b/sound/soc/sof/intel/hda-dai.c @@ -131,12 +131,17 @@ static int hda_link_hw_params(struct snd_pcm_substream *substream, struct hdac_ext_stream *link_dev; struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream); struct snd_soc_dai *codec_dai = rtd->codec_dai; + struct sof_intel_hda_stream *hda_stream; struct hda_pipe_params p_params = {0}; struct hdac_ext_link *link; int stream_tag; link_dev = snd_soc_dai_get_dma_data(dai, substream); + hda_stream = container_of(link_dev, struct sof_intel_hda_stream, + hda_stream); + hda_stream->hw_params_upon_resume = 0; + link = snd_hdac_ext_bus_get_link(bus, codec_dai->component->name); if (!link) return -EINVAL; @@ -168,22 +173,22 @@ static int hda_link_hw_params(struct snd_pcm_substream *substream, static int hda_link_pcm_prepare(struct snd_pcm_substream *substream, struct snd_soc_dai *dai) { - struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct hdac_ext_stream *link_dev = + snd_soc_dai_get_dma_data(dai, substream); + struct sof_intel_hda_stream *hda_stream; struct snd_sof_dev *sdev = - snd_soc_component_get_drvdata(dai->component); - struct snd_sof_pcm *spcm; + snd_soc_component_get_drvdata(dai->component); + struct snd_soc_pcm_runtime *rtd = snd_pcm_substream_chip(substream); int stream = substream->stream; - spcm = snd_sof_find_spcm_dai(sdev, rtd); - if (!spcm) - return -EINVAL; + hda_stream = container_of(link_dev, struct sof_intel_hda_stream, + hda_stream); /* setup hw_params again only if resuming from system suspend */ - if (!spcm->hw_params_upon_resume[stream]) + if (!hda_stream->hw_params_upon_resume) return 0; - dev_dbg(sdev->dev, "hda: prepare stream %d dir %d\n", - spcm->pcm.pcm_id, substream->stream); + dev_dbg(sdev->dev, "hda: prepare stream dir %d\n", substream->stream); return hda_link_hw_params(substream, &rtd->dpcm[stream].hw_params, dai); |