Re: [PATCH v1 13/14] ASoC: qcom: add mic support

[Srinivas Kandagatla]

On 10/02/16 20:10, Kenneth Westfield wrote:
> On Wed, Feb 10, 2016 at 02:20:03AM -0800, Srinivas Kandagatla wrote:
> > diff --git a/sound/soc/qcom/lpass-platform.c
> > b/sound/soc/qcom/lpass-platform.c
> > index 26a046a..574aa33 100644
> > --- a/sound/soc/qcom/lpass-platform.c
> > +++ b/sound/soc/qcom/lpass-platform.c
>
> ...
>
> > @@ -92,7 +93,13 @@ static int lpass_platform_pcmops_hw_params(struct
> > snd_pcm_substream *substream,
> >   	unsigned int regval;
> >   	int dir = substream->stream;
> >   	int bitwidth;
> > -	int ret, rdma_port = pcm_data->i2s_port + v->dmactl_audif_start;
> > +	int ch, ret, dma_port = pcm_data->i2s_port +
> > v->dmactl_audif_start;
>
> IMO, changing rdma_port to dma_port should be in patch 3 (ASoC: qcom:
> rename rdmactl_audif_start to dmactrl_audif_start).  However, as I
> stated in my comments to your RFC submission, this is a nit.
Am ok to change it.
But, Its just a local variable whose sense only changes once we get the 
mic support in.

> ...
>
> > @@ -460,55 +483,106 @@ static int lpass_platform_pcm_new(struct
> > snd_soc_pcm_runtime *soc_runtime)
> >   	if (!data)
> >   		return -ENOMEM;
> >
> > -	if (v->alloc_dma_channel)
> > -		data->rdma_ch = v->alloc_dma_channel(drvdata,
> > -
> > SNDRV_PCM_STREAM_PLAYBACK);
> > +	data->i2s_port = cpu_dai->driver->id;
> > +	snd_soc_pcm_set_drvdata(soc_runtime, data);
> >
> > -	if (IS_ERR_VALUE(data->rdma_ch))
> > -		return data->rdma_ch;
> > +	psubstream = pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
> > +	if (psubstream) {
> > +		if (v->alloc_dma_channel)
> > +			data->rdma_ch = v->alloc_dma_channel(drvdata,
> > +
> > SNDRV_PCM_STREAM_PLAYBACK);
> >
> > -	drvdata->substream[data->rdma_ch] = substream;
> > -	data->i2s_port = cpu_dai->driver->id;
> > +		if (IS_ERR_VALUE(data->rdma_ch))
> > +			return data->rdma_ch;
> >
> > -	snd_soc_pcm_set_drvdata(soc_runtime, data);
> > +		drvdata->substream[data->rdma_ch] = psubstream;
> >
> > -	ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
> > -				soc_runtime->platform->dev,
> > -				size, &substream->dma_buffer);
> > -	if (ret)
> > -		return ret;
> > +		ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
> > pcm->card->dev,
> > +					size, &psubstream->dma_buffer);
>
> In patch 1 of this series (ASoC: qcom: use snd_dma_alloc/free* apis), you
> correctly used the platform device for memory allocation.  However, that is
> then replaced by the soundcard device here ...
Oops, I should have been careful.
Will fix it and send v2.



> > +	csubstream = pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream;
> > +	if (csubstream) {
> > +		if (v->alloc_dma_channel)
> > +			data->wrdma_ch = v->alloc_dma_channel(drvdata,
> > +						SNDRV_PCM_STREAM_CAPTURE);
> > +
> > +		if (IS_ERR_VALUE(data->wrdma_ch))
> > +			goto capture_alloc_err;
> > +
> > +		drvdata->substream[data->wrdma_ch] = csubstream;
> > +
> > +		ret = snd_dma_alloc_pages(SNDRV_DMA_TYPE_DEV,
> > pcm->card->dev,
> > +					size, &csubstream->dma_buffer);
> > +		if (ret)
> > +			goto capture_alloc_err;
>
> ... and here as well.
same.

Thanks,
srini
>