C++ (Cpp) cs5535audio_clear_dma_packets示例

示例#1

文件： cs5535audio_pcm.c 项目： acassis/emlinux-ssd1935

static int snd_cs5535audio_hw_free(struct snd_pcm_substream *substream)
{
	struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
	struct cs5535audio_dma *dma = substream->runtime->private_data;

	cs5535audio_clear_dma_packets(cs5535au, dma, substream);
	return snd_pcm_lib_free_pages(substream);
}

示例#2

文件： cs5535audio_pcm.c 项目： CSCLOG/beaglebone

static int snd_cs5535audio_hw_free(struct snd_pcm_substream *substream)
{
	struct cs5535audio *cs5535au = snd_pcm_substream_chip(substream);
	struct cs5535audio_dma *dma = substream->runtime->private_data;

	if (dma->pcm_open_flag) {
		if (substream == cs5535au->playback_substream)
			snd_ac97_update_power(cs5535au->ac97,
					AC97_PCM_FRONT_DAC_RATE, 0);
		else
			snd_ac97_update_power(cs5535au->ac97,
					AC97_PCM_LR_ADC_RATE, 0);
		dma->pcm_open_flag = 0;
	}
	cs5535audio_clear_dma_packets(cs5535au, dma, substream);
	return snd_pcm_lib_free_pages(substream);
}