1SND_PCM_NEW_INTERNAL(9)             PCM API            SND_PCM_NEW_INTERNAL(9)
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NAME

6       snd_pcm_new_internal - create a new internal PCM instance
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SYNOPSIS

9       int snd_pcm_new_internal(struct snd_card * card, const char * id,
10                                int device, int playback_count,
11                                int capture_count, struct snd_pcm ** rpcm);
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ARGUMENTS

14       card
15           the card instance
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17       id
18           the id string
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20       device
21           the device index (zero based - shared with normal PCMs)
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23       playback_count
24           the number of substreams for playback
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26       capture_count
27           the number of substreams for capture
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29       rpcm
30           the pointer to store the new pcm instance
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DESCRIPTION

33       Creates a new internal PCM instance with no userspace device or procfs
34       entries. This is used by ASoC Back End PCMs in order to create a PCM
35       that will only be used internally by kernel drivers. i.e. it cannot be
36       opened by userspace. It provides existing ASoC components drivers with
37       a substream and access to any private data.
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39       The pcm operators have to be set afterwards to the new instance via
40       snd_pcm_set_ops.
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RETURN

43       Zero if successful, or a negative error code on failure.
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46Kernel Hackers Manual 3.10         June 2019           SND_PCM_NEW_INTERNAL(9)
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