1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>drm_modeset_lock_crtc</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Linux DRM Developer's Guide"><link rel="up" href="drm-kms-init.html#idp1124843020" title="KMS Locking"><link rel="prev" href="API-drm-modeset-unlock-all.html" title="drm_modeset_unlock_all"><link rel="next" href="API-drm-modeset-legacy-acquire-ctx.html" title="drm_modeset_legacy_acquire_ctx"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">drm_modeset_lock_crtc</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-drm-modeset-unlock-all.html">Prev</a>&#160;</td><th width="60%" align="center">KMS Locking</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-drm-modeset-legacy-acquire-ctx.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-drm-modeset-lock-crtc"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>drm_modeset_lock_crtc &#8212; 
2     lock crtc with hidden acquire ctx for a plane update
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <b class="fsfunc">drm_modeset_lock_crtc </b>(</code></td><td>struct drm_crtc * <var class="pdparam">crtc</var>, </td></tr><tr><td>&#160;</td><td>struct drm_plane * <var class="pdparam">plane</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1124903340"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>crtc</code></em></span></dt><dd><p>
4     DRM CRTC
5    </p></dd><dt><span class="term"><em class="parameter"><code>plane</code></em></span></dt><dd><p>
6     DRM plane to be updated on <em class="parameter"><code>crtc</code></em>
7    </p></dd></dl></div></div><div class="refsect1"><a name="idp1124906308"></a><h2>Description</h2><p>
8   This function locks the given crtc and plane (which should be either the
9   primary or cursor plane) using a hidden acquire context. This is necessary so
10   that drivers internally using the atomic interfaces can grab further locks
11   with the lock acquire context.
12   </p><p>
13
14   Note that <em class="parameter"><code>plane</code></em> can be NULL, e.g. when the cursor support hasn't yet been
15   converted to universal planes yet.
16</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-drm-modeset-unlock-all.html">Prev</a>&#160;</td><td width="20%" align="center"><a accesskey="u" href="drm-kms-init.html#idp1124843020">Up</a></td><td width="40%" align="right">&#160;<a accesskey="n" href="API-drm-modeset-legacy-acquire-ctx.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">drm_modeset_unlock_all</span>&#160;</td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top">&#160;<span class="phrase">drm_modeset_legacy_acquire_ctx</span></td></tr></table></div></body></html>
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