snd_pcm_hw_params 348 include/sound/asound.h struct snd_pcm_hw_params { snd_pcm_hw_params 459 include/sound/asound.h SNDRV_PCM_IOCTL_HW_REFINE = _IOWR('A', 0x10, struct snd_pcm_hw_params), snd_pcm_hw_params 460 include/sound/asound.h SNDRV_PCM_IOCTL_HW_PARAMS = _IOWR('A', 0x11, struct snd_pcm_hw_params), snd_pcm_hw_params 364 sound/core/pcm_native.c static int snd_pcm_hw_params(struct snd_pcm_substream *substream,