1SND_PCM_KERNEL_IOCTL(9)             PCM API            SND_PCM_KERNEL_IOCTL(9)
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NAME

6       snd_pcm_kernel_ioctl - Execute PCM ioctl in the kernel-space
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SYNOPSIS

9       int snd_pcm_kernel_ioctl(struct snd_pcm_substream * substream,
10                                unsigned int cmd, void * arg);
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ARGUMENTS

13       substream
14           PCM substream
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16       cmd
17           IOCTL cmd
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19       arg
20           IOCTL argument
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DESCRIPTION

23       The function is provided primarily for OSS layer and USB gadget
24       drivers, and it allows only the limited set of ioctls (hw_params,
25       sw_params, prepare, start, drain, drop, forward).
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28Kernel Hackers Manual 3.10         June 2019           SND_PCM_KERNEL_IOCTL(9)
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