C++ (Cpp) s3c_idma_getpos примеры использования

Пример #1

Файл: s3c-idma.c Проект: Admetric/android_kernel_s5pv210

static snd_pcm_uframes_t
	s3c_idma_pointer(struct snd_pcm_substream *substream)
{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct s3c_dma_params *dma = rtd->dai->cpu_dai->dma_data;
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct lpam_i2s_pdata *prtd = runtime->private_data;
	dma_addr_t src, dst;
	unsigned long res;

	spin_lock(&prtd->lock);
#if 1
	dst = dma->dma_addr;
	s3c_idma_getpos(&src);
	res = src - runtime->dma_addr;
#else
	res = prtd->pos - prtd->start;
#endif
	spin_unlock(&prtd->lock);


	/* By Jung */
	if (res >= snd_pcm_lib_buffer_bytes(substream)) {
		if (res == snd_pcm_lib_buffer_bytes(substream))
			res = 0;
	}

	return bytes_to_frames(substream->runtime, res);
}

Пример #2

Файл: s3c-idma.c Проект: Angel666/ICS_kernel_P1000_CM_version

static snd_pcm_uframes_t
	s3c_idma_pointer(struct snd_pcm_substream *substream)
{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct lpam_i2s_pdata *prtd = runtime->private_data;
	dma_addr_t src;
	unsigned long res;

	spin_lock(&prtd->lock);

	s3c_idma_getpos(&src);
	res = src - prtd->start;

	spin_unlock(&prtd->lock);

	if (res >= snd_pcm_lib_buffer_bytes(substream)) {
		if (res == snd_pcm_lib_buffer_bytes(substream))
			res = 0;
	}

	return bytes_to_frames(substream->runtime, res);
}