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ASoC: dpcm: Explicitly set BE DAI link supported stream directions

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Some BE DAIs can be "dummy" (when the DSP is controlling the DAI) and as such
wont have set a minimum number of playback or capture channels required for BE
DAI registration (to establish supported stream directions).

Force machine drivers to explicitly set whether they support playback and capture
stream directions for every BE DAIs.

Signed-off-by: Liam Girdwood <liam.r.girdwood@linux.intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Liam Girdwood 2014-01-07 17:51:42 +00:00 committed by Mark Brown
parent 6ce4eac1f6
commit 1e9de42f43
2 changed files with 6 additions and 4 deletions
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4
include/sound/soc.h
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@ -886,6 +886,10 @@ struct snd_soc_dai_link {
/* This DAI link can route to other DAI links at runtime (Frontend)*/
unsigned int dynamic:1;
/* DPCM capture and Playback support */
unsigned int dpcm_capture:1;
unsigned int dpcm_playback:1;
/* pmdown_time is ignored at stop */
unsigned int ignore_pmdown_time:1;

6
sound/soc/soc-pcm.c
View File

@ -2026,10 +2026,8 @@ int soc_new_pcm(struct snd_soc_pcm_runtime *rtd, int num)
int ret = 0, playback = 0, capture = 0;
if (rtd->dai_link->dynamic || rtd->dai_link->no_pcm) {
if (cpu_dai->driver->playback.channels_min)
playback = 1;
if (cpu_dai->driver->capture.channels_min)
capture = 1;
playback = rtd->dai_link->dpcm_playback;
capture = rtd->dai_link->dpcm_capture;
} else {
if (codec_dai->driver->playback.channels_min &&
cpu_dai->driver->playback.channels_min)