[alsa-devel] [PATCH 4/5] ASoC: sst_platform: fix the pulseaudio error
Bensaid, Selma
selma.bensaid at intel.com
Tue Feb 15 15:46:41 CET 2011
>
> +static int sst_platform_pcm_hw_params(struct snd_pcm_substream
> *substream,
> + struct snd_pcm_hw_params *params)
> +{
> + snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(params));
> + memset(substream->runtime->dma_area, 0,
> params_buffer_bytes(params));
> +
> + return 0;
> +}
>
> static struct snd_pcm_ops sst_platform_ops = {
> .open = sst_platform_open,
> @@ -373,6 +381,7 @@ static struct snd_pcm_ops sst_platform_ops = {
> .prepare = sst_platform_pcm_prepare,
> .trigger = sst_platform_pcm_trigger,
> .pointer = sst_platform_pcm_pointer,
> + .hw_params = sst_platform_pcm_hw_params,
> };
Hi Vinod,
The sst_soc_platform_drv provides also .pcm_new callback which pre-allocates
the DMA memory for the PCM Streams. Is the pcm_new callback required?
Selma.
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