45 static void vx_pcm_read_per_bytes(struct vx_core *chip, struct snd_pcm_runtime *runtime,  in vx_pcm_read_per_bytes()  argument
49 	unsigned char *buf = (unsigned char *)(runtime->dma_area + offset);  in vx_pcm_read_per_bytes()
53 		buf = (unsigned char *)runtime->dma_area;  in vx_pcm_read_per_bytes()
58 		buf = (unsigned char *)runtime->dma_area;  in vx_pcm_read_per_bytes()
151 			 struct snd_pcm_runtime *runtime)  in vx_set_format()  argument
155 	if (runtime->channels == 1)  in vx_set_format()
157 	if (snd_pcm_format_little_endian(runtime->format))  in vx_set_format()
159 	if (runtime->rate < 32000 && runtime->rate > 11025)  in vx_set_format()
161 	else if (runtime->rate <= 11025)  in vx_set_format()
164 	switch (snd_pcm_format_physical_width(runtime->format)) {  in vx_set_format()
512 	struct snd_pcm_runtime *runtime = subs->runtime;  in vx_pcm_playback_open()  local
539 	runtime->hw = vx_pcm_playback_hw;  in vx_pcm_playback_open()
540 	runtime->hw.period_bytes_min = chip->ibl.size;  in vx_pcm_playback_open()
541 	runtime->private_data = pipe;  in vx_pcm_playback_open()
544 	snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 4);  in vx_pcm_playback_open()
545 	snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 4);  in vx_pcm_playback_open()
558 	if (! subs->runtime->private_data)  in vx_pcm_playback_close()
561 	pipe = subs->runtime->private_data;  in vx_pcm_playback_close()
608 					  struct snd_pcm_runtime *runtime,  in vx_pcm_playback_transfer_chunk()  argument
630 	vx_pseudo_dma_write(chip, runtime, pipe, size);  in vx_pcm_playback_transfer_chunk()
646 				   struct snd_pcm_runtime *runtime,  in vx_update_pipe_position()  argument
663 	if (pipe->position >= (int)runtime->buffer_size)  in vx_update_pipe_position()
664 		pipe->position %= runtime->buffer_size;  in vx_update_pipe_position()
678 	struct snd_pcm_runtime *runtime = subs->runtime;  in vx_pcm_playback_transfer()  local
683 		if ((err = vx_pcm_playback_transfer_chunk(chip, runtime, pipe,  in vx_pcm_playback_transfer()
698 	struct snd_pcm_runtime *runtime = subs->runtime;  in vx_pcm_playback_update()  local
701 		if ((err = vx_update_pipe_position(chip, runtime, pipe)) < 0)  in vx_pcm_playback_update()
703 		if (pipe->transferred >= (int)runtime->period_size) {  in vx_pcm_playback_update()
704 			pipe->transferred %= runtime->period_size;  in vx_pcm_playback_update()
716 	struct vx_pipe *pipe = subs->runtime->private_data;  in vx_pcm_trigger()
768 	struct snd_pcm_runtime *runtime = subs->runtime;  in vx_pcm_playback_pointer()  local
769 	struct vx_pipe *pipe = runtime->private_data;  in vx_pcm_playback_pointer()
779 	struct snd_pcm_runtime *runtime = subs->runtime;  in vx_pcm_prepare()  local
780 	struct vx_pipe *pipe = runtime->private_data;  in vx_pcm_prepare()
806 	if (chip->pcm_running && chip->freq != runtime->rate) {  in vx_pcm_prepare()
808 			   "from the current %d\n", runtime->rate, chip->freq);  in vx_pcm_prepare()
811 	vx_set_clock(chip, runtime->rate);  in vx_pcm_prepare()
813 	if ((err = vx_set_format(chip, pipe, runtime)) < 0)  in vx_pcm_prepare()
822 	pipe->buffer_bytes = frames_to_bytes(runtime, runtime->buffer_size);  in vx_pcm_prepare()
823 	pipe->period_bytes = frames_to_bytes(runtime, runtime->period_size);  in vx_pcm_prepare()
827 	vx_update_pipe_position(chip, runtime, pipe);  in vx_pcm_prepare()
879 	struct snd_pcm_runtime *runtime = subs->runtime;  in vx_pcm_capture_open()  local
922 	runtime->hw = vx_pcm_capture_hw;  in vx_pcm_capture_open()
923 	runtime->hw.period_bytes_min = chip->ibl.size;  in vx_pcm_capture_open()
924 	runtime->private_data = pipe;  in vx_pcm_capture_open()
927 	snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 4);  in vx_pcm_capture_open()
928 	snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 4);  in vx_pcm_capture_open()
942 	if (! subs->runtime->private_data)  in vx_pcm_capture_close()
944 	pipe = subs->runtime->private_data;  in vx_pcm_capture_close()
976 	struct snd_pcm_runtime *runtime = subs->runtime;  in vx_pcm_capture_update()  local
981 	size = runtime->buffer_size - snd_pcm_capture_avail(runtime);  in vx_pcm_capture_update()
984 	size = frames_to_bytes(runtime, size);  in vx_pcm_capture_update()
1004 		vx_pcm_read_per_bytes(chip, runtime, pipe);  in vx_pcm_capture_update()
1012 			vx_pseudo_dma_read(chip, runtime, pipe, space);  in vx_pcm_capture_update()
1020 		vx_pcm_read_per_bytes(chip, runtime, pipe);  in vx_pcm_capture_update()
1028 		vx_pcm_read_per_bytes(chip, runtime, pipe);  in vx_pcm_capture_update()
1050 	struct snd_pcm_runtime *runtime = subs->runtime;  in vx_pcm_capture_pointer()  local
1051 	struct vx_pipe *pipe = runtime->private_data;  in vx_pcm_capture_pointer()
1052 	return bytes_to_frames(runtime, pipe->hw_ptr);  in vx_pcm_capture_pointer()