95 	struct snd_pcm_substream *substream;  member
356 		snd_pcm_period_elapsed(chip->substream);  in cx25821_aud_irq()
458 static int snd_cx25821_pcm_open(struct snd_pcm_substream *substream)  in snd_cx25821_pcm_open()  argument
460 	struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream);  in snd_cx25821_pcm_open()
461 	struct snd_pcm_runtime *runtime = substream->runtime;  in snd_cx25821_pcm_open()
475 	chip->substream = substream;  in snd_cx25821_pcm_open()
501 static int snd_cx25821_close(struct snd_pcm_substream *substream)  in snd_cx25821_close()  argument
509 static int snd_cx25821_hw_params(struct snd_pcm_substream *substream,  in snd_cx25821_hw_params()  argument
512 	struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream);  in snd_cx25821_hw_params()
516 	if (substream->runtime->dma_area) {  in snd_cx25821_hw_params()
518 		substream->runtime->dma_area = NULL;  in snd_cx25821_hw_params()
559 	substream->runtime->dma_area = chip->buf->vaddr;  in snd_cx25821_hw_params()
560 	substream->runtime->dma_bytes = chip->dma_size;  in snd_cx25821_hw_params()
561 	substream->runtime->dma_addr = 0;  in snd_cx25821_hw_params()
574 static int snd_cx25821_hw_free(struct snd_pcm_substream *substream)  in snd_cx25821_hw_free()  argument
576 	struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream);  in snd_cx25821_hw_free()
578 	if (substream->runtime->dma_area) {  in snd_cx25821_hw_free()
580 		substream->runtime->dma_area = NULL;  in snd_cx25821_hw_free()
589 static int snd_cx25821_prepare(struct snd_pcm_substream *substream)  in snd_cx25821_prepare()  argument
597 static int snd_cx25821_card_trigger(struct snd_pcm_substream *substream,  in snd_cx25821_card_trigger()  argument
600 	struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream);  in snd_cx25821_card_trigger()
627 					     *substream)  in snd_cx25821_pointer()
629 	struct cx25821_audio_dev *chip = snd_pcm_substream_chip(substream);  in snd_cx25821_pointer()
630 	struct snd_pcm_runtime *runtime = substream->runtime;  in snd_cx25821_pointer()
641 static struct page *snd_cx25821_page(struct snd_pcm_substream *substream,  in snd_cx25821_page()  argument
644 	void *pageptr = substream->runtime->dma_area + offset;  in snd_cx25821_page()