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()
63 		buf = (unsigned char *)runtime->dma_area;  in vx_pcm_read_per_bytes()
152 			 struct snd_pcm_runtime *runtime)  in vx_set_format()  argument
156 	if (runtime->channels == 1)  in vx_set_format()
158 	if (snd_pcm_format_little_endian(runtime->format))  in vx_set_format()
160 	if (runtime->rate < 32000 && runtime->rate > 11025)  in vx_set_format()
162 	else if (runtime->rate <= 11025)  in vx_set_format()
165 	switch (snd_pcm_format_physical_width(runtime->format)) {  in vx_set_format()
513 	struct snd_pcm_runtime *runtime = subs->runtime;  in vx_pcm_playback_open()  local
541 	runtime->hw = vx_pcm_playback_hw;  in vx_pcm_playback_open()
542 	runtime->hw.period_bytes_min = chip->ibl.size;  in vx_pcm_playback_open()
543 	runtime->private_data = pipe;  in vx_pcm_playback_open()
546 	snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 4);  in vx_pcm_playback_open()
547 	snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 4);  in vx_pcm_playback_open()
560 	if (! subs->runtime->private_data)  in vx_pcm_playback_close()
563 	pipe = subs->runtime->private_data;  in vx_pcm_playback_close()
610 					  struct snd_pcm_runtime *runtime,  in vx_pcm_playback_transfer_chunk()  argument
632 	vx_pseudo_dma_write(chip, runtime, pipe, size);  in vx_pcm_playback_transfer_chunk()
648 				   struct snd_pcm_runtime *runtime,  in vx_update_pipe_position()  argument
665 	if (pipe->position >= (int)runtime->buffer_size)  in vx_update_pipe_position()
666 		pipe->position %= runtime->buffer_size;  in vx_update_pipe_position()
680 	struct snd_pcm_runtime *runtime = subs->runtime;  in vx_pcm_playback_transfer()  local
685 		if ((err = vx_pcm_playback_transfer_chunk(chip, runtime, pipe,  in vx_pcm_playback_transfer()
700 	struct snd_pcm_runtime *runtime = subs->runtime;  in vx_pcm_playback_update()  local
703 		if ((err = vx_update_pipe_position(chip, runtime, pipe)) < 0)  in vx_pcm_playback_update()
705 		if (pipe->transferred >= (int)runtime->period_size) {  in vx_pcm_playback_update()
706 			pipe->transferred %= runtime->period_size;  in vx_pcm_playback_update()
718 	struct vx_pipe *pipe = subs->runtime->private_data;  in vx_pcm_trigger()
770 	struct snd_pcm_runtime *runtime = subs->runtime;  in vx_pcm_playback_pointer()  local
771 	struct vx_pipe *pipe = runtime->private_data;  in vx_pcm_playback_pointer()
799 	struct snd_pcm_runtime *runtime = subs->runtime;  in vx_pcm_prepare()  local
800 	struct vx_pipe *pipe = runtime->private_data;  in vx_pcm_prepare()
826 	if (chip->pcm_running && chip->freq != runtime->rate) {  in vx_pcm_prepare()
828 			   "from the current %d\n", runtime->rate, chip->freq);  in vx_pcm_prepare()
831 	vx_set_clock(chip, runtime->rate);  in vx_pcm_prepare()
833 	if ((err = vx_set_format(chip, pipe, runtime)) < 0)  in vx_pcm_prepare()
842 	pipe->buffer_bytes = frames_to_bytes(runtime, runtime->buffer_size);  in vx_pcm_prepare()
843 	pipe->period_bytes = frames_to_bytes(runtime, runtime->period_size);  in vx_pcm_prepare()
847 	vx_update_pipe_position(chip, runtime, pipe);  in vx_pcm_prepare()
903 	struct snd_pcm_runtime *runtime = subs->runtime;  in vx_pcm_capture_open()  local
946 	runtime->hw = vx_pcm_capture_hw;  in vx_pcm_capture_open()
947 	runtime->hw.period_bytes_min = chip->ibl.size;  in vx_pcm_capture_open()
948 	runtime->private_data = pipe;  in vx_pcm_capture_open()
951 	snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 4);  in vx_pcm_capture_open()
952 	snd_pcm_hw_constraint_step(runtime, 0, SNDRV_PCM_HW_PARAM_PERIOD_BYTES, 4);  in vx_pcm_capture_open()
966 	if (! subs->runtime->private_data)  in vx_pcm_capture_close()
968 	pipe = subs->runtime->private_data;  in vx_pcm_capture_close()
1000 	struct snd_pcm_runtime *runtime = subs->runtime;  in vx_pcm_capture_update()  local
1005 	size = runtime->buffer_size - snd_pcm_capture_avail(runtime);  in vx_pcm_capture_update()
1008 	size = frames_to_bytes(runtime, size);  in vx_pcm_capture_update()
1028 		vx_pcm_read_per_bytes(chip, runtime, pipe);  in vx_pcm_capture_update()
1036 			vx_pseudo_dma_read(chip, runtime, pipe, space);  in vx_pcm_capture_update()
1044 		vx_pcm_read_per_bytes(chip, runtime, pipe);  in vx_pcm_capture_update()
1052 		vx_pcm_read_per_bytes(chip, runtime, pipe);  in vx_pcm_capture_update()
1074 	struct snd_pcm_runtime *runtime = subs->runtime;  in vx_pcm_capture_pointer()  local
1075 	struct vx_pipe *pipe = runtime->private_data;  in vx_pcm_capture_pointer()
1076 	return bytes_to_frames(runtime, pipe->hw_ptr);  in vx_pcm_capture_pointer()