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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>spi_register_board_info</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><link rel="home" href="index.html" title="Linux Device Drivers" /><link rel="up" href="ch09.html" title="Chapter 9. Serial Peripheral Interface (SPI)" /><link rel="prev" href="re740.html" title="struct spi_board_info" /><link rel="next" href="re742.html" title="spi_register_driver" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span>spi_register_board_info</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="re740.html">Prev</a> </td><th width="60%" align="center">Chapter 9. Serial Peripheral Interface (SPI)</th><td width="20%" align="right"> <a accesskey="n" href="re742.html">Next</a></td></tr></table><hr /></div><div class="refentry" title="spi_register_board_info"><a id="API-spi-register-board-info"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>spi_register_board_info —
register SPI devices for a given board
</p></div><div class="refsynopsisdiv" title="Synopsis"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" summary="Function synopsis" cellspacing="0" cellpadding="0" class="funcprototype-table"><tr><td><code class="funcdef">int <b class="fsfunc">spi_register_board_info </b>(</code></td><td>struct spi_board_info const * <var class="pdparam">info</var>, </td></tr><tr><td> </td><td>unsigned <var class="pdparam">n</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1" title="Arguments"><a id="id2706145"></a><h2>Arguments</h2><div class="variablelist"><dl><dt><span class="term"><em class="parameter"><code>info</code></em></span></dt><dd><p>
array of chip descriptors
</p></dd><dt><span class="term"><em class="parameter"><code>n</code></em></span></dt><dd><p>
how many descriptors are provided
</p></dd></dl></div></div><div class="refsect1" title="Context"><a id="id2706189"></a><h2>Context</h2><p>
can sleep
</p></div><div class="refsect1" title="Description"><a id="id2706199"></a><h2>Description</h2><p>
Board-specific early init code calls this (probably during arch_initcall)
with segments of the SPI device table. Any device nodes are created later,
after the relevant parent SPI controller (bus_num) is defined. We keep
this table of devices forever, so that reloading a controller driver will
not make Linux forget about these hard-wired devices.
</p><p>
Other code can also call this, e.g. a particular add-on board might provide
SPI devices through its expansion connector, so code initializing that board
would naturally declare its SPI devices.
</p><p>
The board info passed can safely be __initdata ... but be careful of
any embedded pointers (platform_data, etc), they're copied as-is.
</p></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="re740.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ch09.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="re742.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span>struct spi_board_info</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span>spi_register_driver</span></td></tr></table></div></body></html>
