1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>drm_fb_helper_initial_config</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#idp1125647748" title="fbdev Helper Functions Reference"><link rel="prev" href="API-drm-fb-helper-fill-var.html" title="drm_fb_helper_fill_var"><link rel="next" href="API-drm-fb-helper-hotplug-event.html" title="drm_fb_helper_hotplug_event"></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_fb_helper_initial_config</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-drm-fb-helper-fill-var.html">Prev</a>&#160;</td><th width="60%" align="center">fbdev Helper Functions Reference</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-drm-fb-helper-hotplug-event.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-drm-fb-helper-initial-config"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>drm_fb_helper_initial_config &#8212; 
2     setup a sane initial connector configuration
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_fb_helper_initial_config </b>(</code></td><td>struct drm_fb_helper * <var class="pdparam">fb_helper</var>, </td></tr><tr><td>&#160;</td><td>int <var class="pdparam">bpp_sel</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1125774132"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>fb_helper</code></em></span></dt><dd><p>
4     fb_helper device struct
5    </p></dd><dt><span class="term"><em class="parameter"><code>bpp_sel</code></em></span></dt><dd><p>
6     bpp value to use for the framebuffer configuration
7    </p></dd></dl></div></div><div class="refsect1"><a name="idp1125776804"></a><h2>Description</h2><p>
8   Scans the CRTCs and connectors and tries to put together an initial setup.
9   At the moment, this is a cloned configuration across all heads with
10   a new framebuffer object as the backing store.
11   </p><p>
12
13   Note that this also registers the fbdev and so allows userspace to call into
14   the driver through the fbdev interfaces.
15   </p><p>
16
17   This function will call down into the -&gt;fb_probe callback to let
18   the driver allocate and initialize the fbdev info structure and the drm
19   framebuffer used to back the fbdev. <code class="function">drm_fb_helper_fill_var</code> and
20   <code class="function">drm_fb_helper_fill_fix</code> are provided as helpers to setup simple default
21   values for the fbdev info structure.
22</p></div><div class="refsect1"><a name="idp1125779300"></a><h2>RETURNS</h2><p>
23   Zero if everything went ok, nonzero otherwise.
24</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-fb-helper-fill-var.html">Prev</a>&#160;</td><td width="20%" align="center"><a accesskey="u" href="ch02s05.html#idp1125647748">Up</a></td><td width="40%" align="right">&#160;<a accesskey="n" href="API-drm-fb-helper-hotplug-event.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">drm_fb_helper_fill_var</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_fb_helper_hotplug_event</span></td></tr></table></div></body></html>
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