264 		snd_pcm_period_elapsed(chip->substream);  in cx23885_audio_irq()
323 static int snd_cx23885_pcm_open(struct snd_pcm_substream *substream)  in snd_cx23885_pcm_open()  argument
325 	struct cx23885_audio_dev *chip = snd_pcm_substream_chip(substream);  in snd_cx23885_pcm_open()
326 	struct snd_pcm_runtime *runtime = substream->runtime;  in snd_cx23885_pcm_open()
340 	chip->substream = substream;  in snd_cx23885_pcm_open()
362 static int snd_cx23885_close(struct snd_pcm_substream *substream)  in snd_cx23885_close()  argument
371 static int snd_cx23885_hw_params(struct snd_pcm_substream *substream,  in snd_cx23885_hw_params()  argument
374 	struct cx23885_audio_dev *chip = snd_pcm_substream_chip(substream);  in snd_cx23885_hw_params()
378 	if (substream->runtime->dma_area) {  in snd_cx23885_hw_params()
380 		substream->runtime->dma_area = NULL;  in snd_cx23885_hw_params()
416 	substream->runtime->dma_area = chip->buf->vaddr;  in snd_cx23885_hw_params()
417 	substream->runtime->dma_bytes = chip->dma_size;  in snd_cx23885_hw_params()
418 	substream->runtime->dma_addr = 0;  in snd_cx23885_hw_params()
431 static int snd_cx23885_hw_free(struct snd_pcm_substream *substream)  in snd_cx23885_hw_free()  argument
434 	struct cx23885_audio_dev *chip = snd_pcm_substream_chip(substream);  in snd_cx23885_hw_free()
436 	if (substream->runtime->dma_area) {  in snd_cx23885_hw_free()
438 		substream->runtime->dma_area = NULL;  in snd_cx23885_hw_free()
447 static int snd_cx23885_prepare(struct snd_pcm_substream *substream)  in snd_cx23885_prepare()  argument
455 static int snd_cx23885_card_trigger(struct snd_pcm_substream *substream,  in snd_cx23885_card_trigger()  argument
458 	struct cx23885_audio_dev *chip = snd_pcm_substream_chip(substream);  in snd_cx23885_card_trigger()
485 	struct snd_pcm_substream *substream)  in snd_cx23885_pointer()  argument
487 	struct cx23885_audio_dev *chip = snd_pcm_substream_chip(substream);  in snd_cx23885_pointer()
488 	struct snd_pcm_runtime *runtime = substream->runtime;  in snd_cx23885_pointer()
499 static struct page *snd_cx23885_page(struct snd_pcm_substream *substream,  in snd_cx23885_page()  argument
502 	void *pageptr = substream->runtime->dma_area + offset;  in snd_cx23885_page()