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ASoC: soc-pcm: skip dpcm path checking with incapable/unready FE

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Skip dpcm path checking for playback or capture, if corresponding FE
doesn't support playback or capture, or currently is not ready. It
can reduce the unnecessary cost to search connected widgets.

[Tweaked comments for clarity -- broonie]

Signed-off-by: Qiao Zhou <zhouqiao@marvell.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Qiao Zhou 2014-11-17 16:02:57 +08:00 committed by Mark Brown
parent f114040e3e
commit 075207d24a
1 changed files with 14 additions and 2 deletions
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16
sound/soc/soc-pcm.c
View file

@ -2248,7 +2248,13 @@ int soc_dpcm_runtime_update(struct snd_soc_card *card)
fe->dai_link->name); fe->dai_link->name);
/* skip if FE doesn't have playback capability */ /* skip if FE doesn't have playback capability */
if (!fe->cpu_dai->driver->playback.channels_min) if (!fe->cpu_dai->driver->playback.channels_min
|| !fe->codec_dai->driver->playback.channels_min)
goto capture;
/* skip if FE isn't currently playing */
if (!fe->cpu_dai->playback_active
|| !fe->codec_dai->playback_active)
goto capture; goto capture;
paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list); paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_PLAYBACK, &list);
@ -2278,7 +2284,13 @@ int soc_dpcm_runtime_update(struct snd_soc_card *card)
dpcm_path_put(&list); dpcm_path_put(&list);
capture: capture:
/* skip if FE doesn't have capture capability */ /* skip if FE doesn't have capture capability */
if (!fe->cpu_dai->driver->capture.channels_min) if (!fe->cpu_dai->driver->capture.channels_min
|| !fe->codec_dai->driver->capture.channels_min)
continue;
/* skip if FE isn't currently capturing */
if (!fe->cpu_dai->capture_active
|| !fe->codec_dai->capture_active)
continue; continue;
paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list); paths = dpcm_path_get(fe, SNDRV_PCM_STREAM_CAPTURE, &list);