[alsa-devel] ALSA for SoC audio support full duplex problem
freebsdxjj at gmail.com
Tue May 12 11:53:52 CEST 2009
I use 18.104.22.168-cfs-v19 on S3C6410(arm),use wm8987 sound card(i2s interface)
It is not use in full duplex.
I grep and diff the drivers
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &snd_ensoniq_playback1_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &snd_ensoniq_capture_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK, &soc_pcm_ops);
snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE, &soc_pcm_ops);
ens1370.c use two different fops for playback and record(I test it in
Vmware,It can run on full duplex)
soc-core.c use the same fops for playback and record
It that the problem ?
So how to fix it for support full duplex?
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