1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>drm_dp_mst_topology_mgr_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="ch02s05.html#idp1125934820" title="Display Port MST Helper Functions Reference"><link rel="prev" href="API-drm-dp-mst-dump-topology.html" title="drm_dp_mst_dump_topology"><link rel="next" href="API-drm-dp-mst-topology-mgr-destroy.html" title="drm_dp_mst_topology_mgr_destroy"></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_dp_mst_topology_mgr_init</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-drm-dp-mst-dump-topology.html">Prev</a> </td><th width="60%" align="center">Display Port MST Helper Functions Reference</th><td width="20%" align="right"> <a accesskey="n" href="API-drm-dp-mst-topology-mgr-destroy.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-drm-dp-mst-topology-mgr-init"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>drm_dp_mst_topology_mgr_init — 2 initialise a topology manager 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_dp_mst_topology_mgr_init </b>(</code></td><td>struct drm_dp_mst_topology_mgr * <var class="pdparam">mgr</var>, </td></tr><tr><td> </td><td>struct device * <var class="pdparam">dev</var>, </td></tr><tr><td> </td><td>struct drm_dp_aux * <var class="pdparam">aux</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">max_dpcd_transaction_bytes</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">max_payloads</var>, </td></tr><tr><td> </td><td>int <var class="pdparam">conn_base_id</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a name="idp1126125876"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>mgr</code></em></span></dt><dd><p> 4 manager struct to initialise 5 </p></dd><dt><span class="term"><em class="parameter"><code>dev</code></em></span></dt><dd><p> 6 device providing this structure - for i2c addition. 7 </p></dd><dt><span class="term"><em class="parameter"><code>aux</code></em></span></dt><dd><p> 8 DP helper aux channel to talk to this device 9 </p></dd><dt><span class="term"><em class="parameter"><code>max_dpcd_transaction_bytes</code></em></span></dt><dd><p> 10 hw specific DPCD transaction limit 11 </p></dd><dt><span class="term"><em class="parameter"><code>max_payloads</code></em></span></dt><dd><p> 12 maximum number of payloads this GPU can source 13 </p></dd><dt><span class="term"><em class="parameter"><code>conn_base_id</code></em></span></dt><dd><p> 14 the connector object ID the MST device is connected to. 15 </p></dd></dl></div></div><div class="refsect1"><a name="idp1126132732"></a><h2>Description</h2><p> 16 Return 0 for success, or negative error code on failure 17</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-dp-mst-dump-topology.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch02s05.html#idp1125934820">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="API-drm-dp-mst-topology-mgr-destroy.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">drm_dp_mst_dump_topology</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span class="phrase">drm_dp_mst_topology_mgr_destroy</span></td></tr></table></div></body></html> 18