C++ (Cpp) davinci_pcm_preallocate_dma_buffer Exemples

Exemple #1

Fichier : davinci-pcm.c Projet : 383530895/linux

static int davinci_pcm_new(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_card *card = rtd->card->snd_card;
	struct snd_pcm *pcm = rtd->pcm;
	int ret;

	ret = dma_coerce_mask_and_coherent(card->dev, DMA_BIT_MASK(32));
	if (ret)
		return ret;

	if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) {
		ret = davinci_pcm_preallocate_dma_buffer(pcm,
			SNDRV_PCM_STREAM_PLAYBACK,
			pcm_hardware_playback.buffer_bytes_max);
		if (ret)
			return ret;
	}

	if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) {
		ret = davinci_pcm_preallocate_dma_buffer(pcm,
			SNDRV_PCM_STREAM_CAPTURE,
			pcm_hardware_capture.buffer_bytes_max);
		if (ret)
			return ret;
	}

	return 0;
}

Exemple #2

Fichier : davinci-pcm.c Projet : 454053205/linux

static int davinci_pcm_new(struct snd_soc_pcm_runtime *rtd)
{
	struct snd_card *card = rtd->card->snd_card;
	struct snd_soc_dai *dai = rtd->cpu_dai;
	struct snd_pcm *pcm = rtd->pcm;
	int ret;

	if (!card->dev->dma_mask)
		card->dev->dma_mask = &davinci_pcm_dmamask;
	if (!card->dev->coherent_dma_mask)
		card->dev->coherent_dma_mask = 0xffffffff;

	if (dai->driver->playback.channels_min) {
		ret = davinci_pcm_preallocate_dma_buffer(pcm,
			SNDRV_PCM_STREAM_PLAYBACK,
			pcm_hardware_playback.buffer_bytes_max);
		if (ret)
			return ret;
	}

	if (dai->driver->capture.channels_min) {
		ret = davinci_pcm_preallocate_dma_buffer(pcm,
			SNDRV_PCM_STREAM_CAPTURE,
			pcm_hardware_capture.buffer_bytes_max);
		if (ret)
			return ret;
	}

	return 0;
}

Exemple #3

Fichier : davinci-pcm.c Projet : 458941968/mini2440-kernel-2.6.29

static int davinci_pcm_new(struct snd_card *card,
			   struct snd_soc_dai *dai, struct snd_pcm *pcm)
{
	int ret;

	if (!card->dev->dma_mask)
		card->dev->dma_mask = &davinci_pcm_dmamask;
	if (!card->dev->coherent_dma_mask)
		card->dev->coherent_dma_mask = 0xffffffff;

	if (dai->playback.channels_min) {
		ret = davinci_pcm_preallocate_dma_buffer(pcm,
			SNDRV_PCM_STREAM_PLAYBACK);
		if (ret)
			return ret;
	}

	if (dai->capture.channels_min) {
		ret = davinci_pcm_preallocate_dma_buffer(pcm,
			SNDRV_PCM_STREAM_CAPTURE);
		if (ret)
			return ret;
	}

	return 0;
}