C++ (Cpp) snd_pcm_substream_to_dma_directionの例

コード例 #1

ファイル: soc-dmaengine-pcm.c プロジェクト: FrozenCow/FIRE-ICE

static int dmaengine_pcm_prepare_and_submit(struct snd_pcm_substream *substream)
{
	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
	struct dma_chan *chan = prtd->dma_chan;
	struct dma_async_tx_descriptor *desc;
	enum dma_transfer_direction direction;
	unsigned long flags = DMA_CTRL_ACK;

	direction = snd_pcm_substream_to_dma_direction(substream);

	if (!substream->runtime->no_period_wakeup)
		flags |= DMA_PREP_INTERRUPT;

	prtd->pos = 0;
	desc = dmaengine_prep_dma_cyclic(chan,
		substream->runtime->dma_addr,
		snd_pcm_lib_buffer_bytes(substream),
		snd_pcm_lib_period_bytes(substream), direction, flags);

	if (!desc)
		return -ENOMEM;

	desc->callback = dmaengine_pcm_dma_complete;
	desc->callback_param = substream;
	prtd->cookie = dmaengine_submit(desc);

	return 0;
}

コード例 #2

ファイル: soc-dmaengine-pcm.c プロジェクト: GREYFOXRGR/BPI-M3-bsp

static int dmaengine_pcm_prepare_and_submit(struct snd_pcm_substream *substream)
{
	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
	struct dma_chan *chan = prtd->dma_chan;
	struct dma_async_tx_descriptor *desc;
	enum dma_transfer_direction direction;
	unsigned long flags = DMA_CTRL_ACK;

	direction = snd_pcm_substream_to_dma_direction(substream);

	if (!substream->runtime->no_period_wakeup)
		flags |= DMA_PREP_INTERRUPT;

	prtd->pos = 0;
#if defined CONFIG_ARCH_SUN9IW1 || defined (CONFIG_ARCH_SUN8IW6) || defined CONFIG_ARCH_SUN8IW7
		if (!strcmp(substream->pcm->card->id, "sndhdmiraw")) {
			desc = dmaengine_prep_dma_cyclic(chan,
				substream->runtime->dma_addr,
				2*snd_pcm_lib_buffer_bytes(substream),
				2*snd_pcm_lib_period_bytes(substream), direction, flags);
		} else if (!strcmp(substream->pcm->card->id, "snddaudio")) {
		#ifdef CONFIG_ARCH_SUN9IW1
			desc = dmaengine_prep_dma_cyclic(chan,
				substream->runtime->dma_addr,
				snd_pcm_lib_buffer_bytes(substream),
				snd_pcm_lib_buffer_bytes(substream), direction, flags);
		#else//CONFIG_ARCH_SUN8IW6
			desc = dmaengine_prep_dma_cyclic(chan,
				substream->runtime->dma_addr,
				snd_pcm_lib_buffer_bytes(substream),
				snd_pcm_lib_period_bytes(substream), direction, flags);
		#endif
		} else {
			desc = dmaengine_prep_dma_cyclic(chan,
				substream->runtime->dma_addr,
				snd_pcm_lib_buffer_bytes(substream),
				snd_pcm_lib_period_bytes(substream), direction, flags);
		}
#else
		desc = dmaengine_prep_dma_cyclic(chan,
			substream->runtime->dma_addr,
			snd_pcm_lib_buffer_bytes(substream),
			snd_pcm_lib_period_bytes(substream), direction, flags);
#endif

	if (!desc)
		return -ENOMEM;

	desc->callback = dmaengine_pcm_dma_complete;
	desc->callback_param = substream;
	prtd->cookie = dmaengine_submit(desc);

	return 0;
}

コード例 #3

ファイル: soc-dmaengine-pcm.c プロジェクト: GalaxyTab4/maxicm_kernel_samsung_degaswifi

static int dmaengine_pcm_prepare_and_submit(struct snd_pcm_substream *substream)
{
	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
	struct dma_chan *chan = prtd->dma_chan;
	struct dma_async_tx_descriptor *desc;
	enum dma_transfer_direction direction;
	unsigned long flags = DMA_CTRL_ACK;

	direction = snd_pcm_substream_to_dma_direction(substream);

	if (!substream->runtime->no_period_wakeup)
		flags |= DMA_PREP_INTERRUPT;

	prtd->pos = 0;
	desc = dmaengine_prep_dma_cyclic(chan,
		substream->runtime->dma_addr,
		snd_pcm_lib_buffer_bytes(substream),
		snd_pcm_lib_period_bytes(substream), direction, flags);

	if (!desc)
		return -ENOMEM;

	desc->callback = dmaengine_pcm_dma_complete;
	desc->callback_param = substream;
	prtd->cookie = dmaengine_submit(desc);

#ifdef CONFIG_SND_PXA_SSP_DUMP
	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK
			&& ssp_playback_enable) {
		prtd->playback_totsize = snd_pcm_lib_buffer_bytes(substream);
		prtd->playback_transfer_addr = substream->runtime->dma_addr;
		prtd->playback_dump_addr = substream->runtime->dma_addr;
	} else if (substream->stream == SNDRV_PCM_STREAM_CAPTURE
			&& ssp_capture_enable) {
		prtd->capture_totsize = snd_pcm_lib_buffer_bytes(substream);
		prtd->capture_transfer_addr = substream->runtime->dma_addr;
		prtd->capture_dump_addr = substream->runtime->dma_addr;
	}
#endif
	return 0;
}

コード例 #4

ファイル: soc-dmaengine-pcm.c プロジェクト: jack-ma/popmetal-android-kernel-3.10

static int dmaengine_pcm_prepare_and_submit(struct snd_pcm_substream *substream)
{
	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
	struct dma_chan *chan = prtd->dma_chan;
	struct dma_async_tx_descriptor *desc;
	enum dma_transfer_direction direction;
	unsigned long flags = DMA_CTRL_ACK;

	direction = snd_pcm_substream_to_dma_direction(substream);

	if (!substream->runtime->no_period_wakeup)
		flags |= DMA_PREP_INTERRUPT;

	prtd->pos = 0;
#ifdef CONFIG_ARCH_ROCKCHIP
	//printk("soc dma buffersize = %d , periodsize=%d, periods=%d\n",
	//	snd_pcm_lib_buffer_bytes(substream),
	//	snd_pcm_lib_period_bytes(substream),
	//	snd_pcm_lib_buffer_bytes(substream)/snd_pcm_lib_period_bytes(substream));
	desc = dmaengine_prep_dma_infiniteloop(chan,
		substream->runtime->dma_addr,
		snd_pcm_lib_buffer_bytes(substream),
		snd_pcm_lib_period_bytes(substream),
		direction, flags,
		snd_pcm_lib_buffer_bytes(substream)/snd_pcm_lib_period_bytes(substream));
#else
	desc = dmaengine_prep_dma_cyclic(chan,
		substream->runtime->dma_addr,
		snd_pcm_lib_buffer_bytes(substream),
		snd_pcm_lib_period_bytes(substream), direction, flags);
#endif

	if (!desc)
		return -ENOMEM;

	desc->callback = dmaengine_pcm_dma_complete;
	desc->callback_param = substream;
	prtd->cookie = dmaengine_submit(desc);

	return 0;
}

コード例 #5

ファイル: soc-dmaengine-pcm.c プロジェクト: MiniBlu/cm11_kernel_htc_msm8974a3ul

static int dmaengine_pcm_prepare_and_submit(struct snd_pcm_substream *substream)
{
	struct dmaengine_pcm_runtime_data *prtd = substream_to_prtd(substream);
	struct dma_chan *chan = prtd->dma_chan;
	struct dma_async_tx_descriptor *desc;
	enum dma_transfer_direction direction;

	direction = snd_pcm_substream_to_dma_direction(substream);

	prtd->pos = 0;
	desc = dmaengine_prep_dma_cyclic(chan,
		substream->runtime->dma_addr,
		snd_pcm_lib_buffer_bytes(substream),
		snd_pcm_lib_period_bytes(substream), direction);

	if (!desc)
		return -ENOMEM;

	desc->callback = dmaengine_pcm_dma_complete;
	desc->callback_param = substream;
	dmaengine_submit(desc);

	return 0;
}