1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>intel_hpd_init</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="drmI915.html#idp1127820844" title="Interrupt Handling"><link rel="prev" href="API-intel-irq-init.html" title="intel_irq_init"><link rel="next" href="re492.html" title=".//drivers/gpu/drm/i915/i915_irq.c"></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">intel_hpd_init</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-intel-irq-init.html">Prev</a>&#160;</td><th width="60%" align="center">Interrupt Handling</th><td width="20%" align="right">&#160;<a accesskey="n" href="re492.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-intel-hpd-init"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>intel_hpd_init &#8212; 
2     initializes and enables hpd support
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">intel_hpd_init </b>(</code></td><td>struct drm_i915_private * <var class="pdparam">dev_priv</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1127833468"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>dev_priv</code></em></span></dt><dd><p>
4     i915 device instance
5    </p></dd></dl></div></div><div class="refsect1"><a name="idp1127835084"></a><h2>Description</h2><p>
6   This function enables the hotplug support. It requires that interrupts have
7   already been enabled with <code class="function">intel_irq_init_hw</code>. From this point on hotplug and
8   poll request can run concurrently to other code, so locking rules must be
9   obeyed.
10   </p><p>
11
12   This is a separate step from interrupt enabling to simplify the locking rules
13   in the driver load and resume code.
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15   .//drivers/gpu/drm/i915/i915_irq.c
16  </td></tr></table></div></body></html>
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