461 	struct snd_pcm_runtime *runtime = substream->runtime;  in snd_cx25821_pcm_open()  local
470 	err = snd_pcm_hw_constraint_pow2(runtime, 0,  in snd_cx25821_pcm_open()
477 	runtime->hw = snd_cx25821_digital_hw;  in snd_cx25821_pcm_open()
488 		runtime->hw.period_bytes_min = bpl;  in snd_cx25821_pcm_open()
489 		runtime->hw.period_bytes_max = bpl;  in snd_cx25821_pcm_open()
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()
578 	if (substream->runtime->dma_area) {  in snd_cx25821_hw_free()
580 		substream->runtime->dma_area = NULL;  in snd_cx25821_hw_free()
630 	struct snd_pcm_runtime *runtime = substream->runtime;  in snd_cx25821_pointer()  local
635 	return runtime->period_size * (count & (runtime->periods - 1));  in snd_cx25821_pointer()
644 	void *pageptr = substream->runtime->dma_area + offset;  in snd_cx25821_page()