This patch was originally submitted in the context of the ChromiumOS kernel 3.10 for BYT (https://groups.google.com/a/chromium.org/forum/#!topic/chromium-os-reviews/AsoBhfHzQg8).
> -----Original Message----- > From: Koul, Vinod > Sent: Monday, July 31, 2017 8:30 PM > To: Cheng-Yi Chiang <[email protected]>; Jie, Yang <[email protected]> > Cc: [email protected]; Liam Girdwood <[email protected]>; Mark > Brown <[email protected]>; Jaroslav Kysela > <[email protected]>; Takashi Iwai <[email protected]>; Eoff, Ullysses A > <[email protected]>; [email protected] > Subject: Re: [PATCH v2] ASoC: Intel: Reset hw_ptr on resume trigger > > On Mon, Jul 31, 2017 at 06:47:34PM +0800, Cheng-Yi Chiang wrote: > > From: "U. Artie Eoff" <[email protected]> > > > > Reset the hw_ptr before queuing the restore_stream_context > > work to eradicate a nasty white audio noise on resume. > > Liam, Jie? This on legacy BYT driver.. > > > > > Tested-by: Cheng-Yi Chiang <[email protected]> > > Signed-off-by: U. Artie Eoff <[email protected]> > > Signed-off-by: Cheng-Yi Chiang <[email protected]> > > --- > > sound/soc/intel/baytrail/sst-baytrail-pcm.c | 4 +++- > > 1 file changed, 3 insertions(+), 1 deletion(-) > > > > diff --git a/sound/soc/intel/baytrail/sst-baytrail-pcm.c > > b/sound/soc/intel/baytrail/sst-baytrail-pcm.c > > index 4765ad474544..e0db7070cd42 100644 > > --- a/sound/soc/intel/baytrail/sst-baytrail-pcm.c > > +++ b/sound/soc/intel/baytrail/sst-baytrail-pcm.c > > @@ -187,8 +187,10 @@ static int sst_byt_pcm_trigger(struct > > snd_pcm_substream *substream, int cmd) > > sst_byt_stream_start(byt, pcm_data->stream, 0); > > break; > > case SNDRV_PCM_TRIGGER_RESUME: > > - if (pdata->restore_stream == true) > > + if (pdata->restore_stream == true) { > > + pcm_data->hw_ptr = 0; > > schedule_work(&pcm_data->work); > > + } > > else > > sst_byt_stream_resume(byt, pcm_data->stream); > > break; > > -- > > 2.12.2 > > > > -- > ~Vinod
