diff options
author | Shengjiu Wang <shengjiu.wang@freescale.com> | 2017-06-14 17:35:20 +0800 |
---|---|---|
committer | Leonard Crestez <leonard.crestez@nxp.com> | 2018-08-24 12:41:33 +0300 |
commit | e6c184ffdd50719568a45976d9e4f6eea21a40c4 (patch) | |
tree | e123c23a6d72394d8e170b95899cf4c5e4e3f50f /sound/soc/soc-pcm.c | |
parent | 0389db1314c4f49046e0023566a1721b4b4f4505 (diff) |
MLK-15043-1: ASoC: soc-pcm: add dpcm_merged_chan in snd_soc_dai_link
According to commit b073ed4e2126 ("ASoC: soc-pcm: DPCM cares BE format"),
Current DPCM only care FE channel, but it will set unsupported channel to
drivers.
So add dpcm_merged_chan, which is used to merge the BE's codec
channels configuration to FE if it exist in snd_soc_dai_link. And
dpcm_runtime_base_chan function is to get the channel configuration of BE,
which likes the dpcm_runtime_base_format function.
Signed-off-by: Shengjiu Wang <shengjiu.wang@freescale.com>
(cherry picked from commit 19ff1095d4b68d17a5f68a2de5654be72b606809)
Diffstat (limited to 'sound/soc/soc-pcm.c')
-rw-r--r-- | sound/soc/soc-pcm.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 1384804090aa..b6f85c26bd14 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -1634,6 +1634,43 @@ static u64 dpcm_runtime_base_format(struct snd_pcm_substream *substream) return formats; } +static void dpcm_runtime_base_chan(struct snd_pcm_substream *substream, + unsigned int *channels_min, + unsigned int *channels_max) +{ + struct snd_soc_pcm_runtime *fe = substream->private_data; + struct snd_soc_dpcm *dpcm; + int stream = substream->stream; + *channels_min = 0; + *channels_max = UINT_MAX; + + if (!fe->dai_link->dpcm_merged_chan) + return; + + /* + * It returns merged BE codec channel; + * if FE want to use it (= dpcm_merged_chan) + */ + + list_for_each_entry(dpcm, &fe->dpcm[stream].be_clients, list_be) { + struct snd_soc_pcm_runtime *be = dpcm->be; + struct snd_soc_dai_driver *codec_dai_drv; + struct snd_soc_pcm_stream *codec_stream; + int i; + + for (i = 0; i < be->num_codecs; i++) { + codec_dai_drv = be->codec_dais[i]->driver; + if (stream == SNDRV_PCM_STREAM_PLAYBACK) + codec_stream = &codec_dai_drv->playback; + else + codec_stream = &codec_dai_drv->capture; + + *channels_min = max(*channels_min, codec_stream->channels_min); + *channels_max = min(*channels_max, codec_stream->channels_max); + } + } +} + static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream) { struct snd_pcm_runtime *runtime = substream->runtime; @@ -1641,11 +1678,17 @@ static void dpcm_set_fe_runtime(struct snd_pcm_substream *substream) struct snd_soc_dai *cpu_dai = rtd->cpu_dai; struct snd_soc_dai_driver *cpu_dai_drv = cpu_dai->driver; u64 format = dpcm_runtime_base_format(substream); + unsigned int channels_min = 0, channels_max = UINT_MAX; if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) dpcm_init_runtime_hw(runtime, &cpu_dai_drv->playback, format); else dpcm_init_runtime_hw(runtime, &cpu_dai_drv->capture, format); + + dpcm_runtime_base_chan(substream, &channels_min, &channels_max); + + runtime->hw.channels_min = max(channels_min, runtime->hw.channels_min); + runtime->hw.channels_max = min(channels_max, runtime->hw.channels_max); } static int dpcm_fe_dai_do_trigger(struct snd_pcm_substream *substream, int cmd); |