---
name: "snd_dmaengine_pcm_trigger"
section: "9"
platform: "linux"
package: "linux-manual-4.9"
version: "4.9.228-1"
release: "Debian 9 (Stretch)"
platforms: ["linux"]
url: "https://new.carta.tech/snd_dmaengine_pcm_trigger"
---

# snd\_dmaengine\_pcm\_trigger(9)

dmaengine based PCM trigger implementation

## NAME

snd\_dmaengine\_pcm\_trigger - dmaengine based PCM trigger implementation

## SYNOPSIS

**int snd\_dmaengine\_pcm\_trigger(struct snd\_pcm\_substream \*** *substream***, int** *cmd***);**

## ARGUMENTS

*substream*

PCM substream

*cmd*

Trigger command

## DESCRIPTION

Returns 0 on success, a negative error code otherwise.

This function can be used as the PCM trigger callback for dmaengine based PCM driver implementations.

## COPYRIGHT