SNDRV_PCM_IOCTL_HW_REFINE 580 include/uapi/sound/asound.h #define SNDRV_PCM_IOCTL_HW_REFINE _IOWR('A', 0x10, struct snd_pcm_hw_params) SNDRV_PCM_IOCTL_HW_REFINE 580 tools/include/uapi/sound/asound.h #define SNDRV_PCM_IOCTL_HW_REFINE _IOWR('A', 0x10, struct snd_pcm_hw_params)