On Thu, 10 Jan 2019 18:03:25 +0100, Sameer Pujar wrote: > > Program codec stripe through AC_VERB_SET_STRIPE_CONTROL to use multiple > sdo lines if supported. Audio needs to be striped across number of sdo > lines for simultaneous playbacks of higher resolutions to work. > > Signed-off-by: Sameer Pujar <spujar@xxxxxxxxxx> > Reviewed-by: Mohan Kumar D <mkumard@xxxxxxxxxx> > Reviewed-by: Ravindra Lokhande <rlokhande@xxxxxxxxxx> > --- > sound/pci/hda/patch_hdmi.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/sound/pci/hda/patch_hdmi.c b/sound/pci/hda/patch_hdmi.c > index 46f88dc..855e526 100644 > --- a/sound/pci/hda/patch_hdmi.c > +++ b/sound/pci/hda/patch_hdmi.c > @@ -1865,7 +1865,7 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, > hda_nid_t pin_nid; > struct snd_pcm_runtime *runtime = substream->runtime; > bool non_pcm; > - int pinctl; > + int pinctl, stripe; > int err = 0; > > mutex_lock(&spec->pcm_lock); > @@ -1909,6 +1909,10 @@ static int generic_hdmi_playback_pcm_prepare(struct hda_pcm_stream *hinfo, > per_pin->channels = substream->runtime->channels; > per_pin->setup = true; > > + stripe = snd_hdac_get_stream_stripe_ctl(&codec->bus->core, substream); > + snd_hda_codec_write(codec, cvt_nid, 0, AC_VERB_SET_STRIPE_CONTROL, > + stripe); This verb is supposed to be optional, hence it'd be safer to check the widget capability before issuing. I doubt whether all HDMI codecs including the very old one support this verb. thanks, Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
