'\" t
.\"     Title: drm_primary_helper_disable
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.78.1 <http://docbook.sf.net/>
.\"      Date: May 2018
.\"    Manual: DRM Core
.\"    Source: Kernel Hackers Manual 3.16.56
.\"  Language: English
.\"
.TH "DRM_PRIMARY_HELPER_D" "9" "May 2018" "Kernel Hackers Manual 3\&.16\&" "DRM Core"
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.SH "NAME"
drm_primary_helper_disable \- Helper for primary plane disable
.SH "SYNOPSIS"
.HP \w'int\ drm_primary_helper_disable('u
.BI "int drm_primary_helper_disable(struct\ drm_plane\ *\ " "plane" ");"
.SH "ARGUMENTS"
.PP
\fIplane\fR
.RS 4
plane to disable
.RE
.SH "DESCRIPTION"
.PP
Provides a default plane disable handler for primary planes\&. This is handler is called in response to a userspace SetPlane operation on the plane with a NULL framebuffer parameter\&. It unconditionally fails the disable call with \-EINVAL the only way to disable the primary plane without driver support is to disable the entier CRTC\&. Which does not match the plane \->disable hook\&.
.PP
Note that some hardware may be able to disable the primary plane without disabling the whole CRTC\&. Drivers for such hardware should provide their own disable handler that disables just the primary plane (and they\*(Aqll likely need to provide their own update handler as well to properly re\-enable a disabled primary plane)\&.
.SH "RETURNS"
.PP
Unconditionally returns \-EINVAL\&.
.SH "AUTHORS"
.PP
\fBJesse Barnes\fR <\&jesse.barnes@intel.com\&>
.br
Intel Corporation, 
	    
	  
.RS 4
Initial version
.RE
.PP
\fBLaurent Pinchart\fR <\&laurent.pinchart@ideasonboard.com\&>
.br
Ideas on board SPRL, 
	    
	  
.RS 4
Driver internals
.RE
.PP
\fBDaniel Vetter\fR <\&daniel.vetter@ffwll.ch\&>
.br
Intel Corporation, 
	    
	  
.RS 4
Contributions all over the place
.RE
.SH "COPYRIGHT"
.br