1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>drm_irq_install</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-vertical-blank.html#idp1127382092" title="Vertical Blanking and Interrupt Handling Functions Reference"><link rel="prev" href="API-drm-vblank-init.html" title="drm_vblank_init"><link rel="next" href="API-drm-irq-uninstall.html" title="drm_irq_uninstall"></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_irq_install</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-drm-vblank-init.html">Prev</a>&#160;</td><th width="60%" align="center">Vertical Blanking and Interrupt Handling Functions Reference</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-drm-irq-uninstall.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-drm-irq-install"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>drm_irq_install &#8212; 
2     install IRQ handler
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">int <b class="fsfunc">drm_irq_install </b>(</code></td><td>struct drm_device * <var class="pdparam">dev</var>, </td></tr><tr><td>&#160;</td><td>int <var class="pdparam">irq</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1127404532"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>dev</code></em></span></dt><dd><p>
4     DRM device
5    </p></dd><dt><span class="term"><em class="parameter"><code>irq</code></em></span></dt><dd><p>
6     IRQ number to install the handler for
7    </p></dd></dl></div></div><div class="refsect1"><a name="idp1127407148"></a><h2>Description</h2><p>
8   Initializes the IRQ related data. Installs the handler, calling the driver
9   <code class="function">irq_preinstall</code> and <code class="function">irq_postinstall</code> functions before and after the
10   installation.
11   </p><p>
12
13   This is the simplified helper interface provided for drivers with no special
14   needs. Drivers which need to install interrupt handlers for multiple
15   interrupts must instead set drm_device-&gt;irq_enabled to signal the DRM core
16   that vblank interrupts are available.
17</p></div><div class="refsect1"><a name="idp1127409140"></a><h2>Returns</h2><p>
18   Zero on success or a negative error code on failure.
19</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-vblank-init.html">Prev</a>&#160;</td><td width="20%" align="center"><a accesskey="u" href="drm-vertical-blank.html#idp1127382092">Up</a></td><td width="40%" align="right">&#160;<a accesskey="n" href="API-drm-irq-uninstall.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">drm_vblank_init</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_irq_uninstall</span></td></tr></table></div></body></html>
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