diff options
| author | Cezary Rojewski <cezary.rojewski@intel.com> | 2022-11-18 14:30:52 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2022-11-18 17:04:41 +0300 |
| commit | f38d4c72cb2d68e73d3e54feb68febd6b7c4bfd2 (patch) | |
| tree | 3fef89ae78eb361e7c3c74c2e3a7eb8480424141 /sound/soc/intel/avs | |
| parent | b1af5b34d6b315ed34abb0fa9049bcf1babbd537 (diff) | |
| download | linux-f38d4c72cb2d68e73d3e54feb68febd6b7c4bfd2.tar.xz | |
ASoC: Intel: avs: Initialize private data for subsequent HDA FEs
HDAudio implementation found in sound/pci/hda expects a valid stream
pointer in substream->runtime->private_data location. For ASoC users,
that should point to a valid link stream which is assigned when BE
opens.
As BE borrows its runtime from FE, the information may be lost when
reparenting comes into picture - see dpcm_be_reparent(). To support the
DPCM reparenting functionality for HDAudio scenarios while still
fulfilling expectations of HDAudio common code, have all FEs point to
the same private data.
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Link: https://lore.kernel.org/r/20221118113052.1340593-1-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/intel/avs')
| -rw-r--r-- | sound/soc/intel/avs/pcm.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/sound/soc/intel/avs/pcm.c b/sound/soc/intel/avs/pcm.c index ca624fbb5c0d..b4e7514f8789 100644 --- a/sound/soc/intel/avs/pcm.c +++ b/sound/soc/intel/avs/pcm.c @@ -1394,9 +1394,29 @@ static int avs_component_hda_open(struct snd_soc_component *component, if (!rtd->dai_link->no_pcm) { struct snd_pcm_hardware hwparams = avs_pcm_hardware; + struct snd_soc_pcm_runtime *be; + struct snd_soc_dpcm *dpcm; + int dir = substream->stream; + + /* + * Support the DPCM reparenting while still fulfilling expectations of HDAudio + * common code - a valid stream pointer at substream->runtime->private_data - + * by having all FEs point to the same private data. + */ + for_each_dpcm_be(rtd, dir, dpcm) { + struct snd_pcm_substream *be_substream; + + be = dpcm->be; + if (be->dpcm[dir].users == 1) + break; + + be_substream = snd_soc_dpcm_get_substream(be, dir); + substream->runtime->private_data = be_substream->runtime->private_data; + break; + } /* RESUME unsupported for de-coupled HD-Audio capture. */ - if (substream->stream == SNDRV_PCM_STREAM_CAPTURE) + if (dir == SNDRV_PCM_STREAM_CAPTURE) hwparams.info &= ~SNDRV_PCM_INFO_RESUME; return snd_soc_set_runtime_hwparams(substream, &hwparams); |