24 Jul
2018
24 Jul
'18
5:07 p.m.
On Thu, Jul 19, 2018 at 07:53:29PM +0100, Liam Girdwood wrote:
+/* Create DMA buffer page table for DSP */ +static int create_page_table(struct snd_pcm_substream *substream,
unsigned char *dma_area, size_t size)+{
That's a very generic name!
- struct snd_soc_pcm_runtime *rtd = substream->private_data;
- struct snd_soc_component *component =
snd_soc_rtdcom_lookup(rtd, DRV_NAME);- struct snd_sof_dev *sdev =
snd_soc_component_get_drvdata(component);- struct snd_sof_pcm *spcm = rtd->sof;
- struct snd_dma_buffer *dmab = snd_pcm_get_dma_buf(substream);
- int stream = substream->stream;
- return snd_sof_create_page_table(sdev, dmab,
spcm->stream[stream].page_table.area, size);+}
...for a super thin wrapper.
- /* nothing todo for BE */
- if (rtd->dai_link->no_pcm)
return 0;
Should these operations be defined for a back end or should back ends have their own set of operations? Do we even need to use DPCM here for that matter?
- case SOF_DAI_INTEL_DMIC:
/* DMIC only supports 16 or 32 bit formats */if (dai->comp_dai.config.frame_fmt == SOF_IPC_FRAME_S24_4LE) {dev_err(sdev->dev,"error: invalid fmt %d for DAI type %d\n",dai->comp_dai.config.frame_fmt,dai->dai_config.type);}/* TODO: add any other DMIC specific fixups */break;
We print an error but don't actually do anything about it?