---
name: "drm_vblank_init"
section: "9"
platform: "linux"
package: "linux-manual-3.16"
version: "3.16.56-1+deb8u1"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/drm_vblank_init"
---

# drm\_vblank\_init(9)

initialize vblank support

## NAME

drm\_vblank\_init - initialize vblank support

## SYNOPSIS

**int drm\_vblank\_init(struct drm\_device \*** *dev***, int** *num\_crtcs***);**

## ARGUMENTS

*dev*

drm\_device

*num\_crtcs*

number of crtcs supported by *dev*

## DESCRIPTION

This function initializes vblank support for *num\_crtcs* display pipelines.

## RETURNS

Zero on success or a negative error code on failure.

## AUTHORS

**Jesse Barnes** \<jesse.barnes@intel.com\>\
 Intel Corporation,

Initial version

**Laurent Pinchart** \<laurent.pinchart@ideasonboard.com\>\
 Ideas on board SPRL,

Driver internals

**Daniel Vetter** \<daniel.vetter@ffwll.ch\>\
 Intel Corporation,

Contributions all over the place

## COPYRIGHT