1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>struct matrix_keypad_platform_data</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Linux Device Drivers"><link rel="up" href="ch08s04.html" title="Matrix keyboars/keypads"><link rel="prev" href="API-struct-matrix-keymap-data.html" title="struct matrix_keymap_data"><link rel="next" href="API-matrix-keypad-parse-of-params.html" title="matrix_keypad_parse_of_params"></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">struct matrix_keypad_platform_data</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-struct-matrix-keymap-data.html">Prev</a>&#160;</td><th width="60%" align="center">Matrix keyboars/keypads</th><td width="20%" align="right">&#160;<a accesskey="n" href="API-matrix-keypad-parse-of-params.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="API-struct-matrix-keypad-platform-data"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>struct matrix_keypad_platform_data &#8212; 
2     platform-dependent keypad data
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="programlisting">
4struct matrix_keypad_platform_data {
5  const struct matrix_keymap_data * keymap_data;
6  const unsigned int * row_gpios;
7  const unsigned int * col_gpios;
8  unsigned int num_row_gpios;
9  unsigned int num_col_gpios;
10  unsigned int col_scan_delay_us;
11  unsigned int debounce_ms;
12  unsigned int clustered_irq;
13  unsigned int clustered_irq_flags;
14  bool active_low;
15  bool wakeup;
16  bool no_autorepeat;
17};  </pre></div><div class="refsect1"><a name="idp1114716812"></a><h2>Members</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term">keymap_data</span></dt><dd><p>
18   pointer to <span class="structname">matrix_keymap_data</span>
19      </p></dd><dt><span class="term">row_gpios</span></dt><dd><p>
20   pointer to array of gpio numbers representing rows
21      </p></dd><dt><span class="term">col_gpios</span></dt><dd><p>
22   pointer to array of gpio numbers reporesenting colums
23      </p></dd><dt><span class="term">num_row_gpios</span></dt><dd><p>
24   actual number of row gpios used by device
25      </p></dd><dt><span class="term">num_col_gpios</span></dt><dd><p>
26   actual number of col gpios used by device
27      </p></dd><dt><span class="term">col_scan_delay_us</span></dt><dd><p>
28   delay, measured in microseconds, that is
29   needed before we can keypad after activating column gpio
30      </p></dd><dt><span class="term">debounce_ms</span></dt><dd><p>
31   debounce interval in milliseconds
32      </p></dd><dt><span class="term">clustered_irq</span></dt><dd><p>
33   may be specified if interrupts of all row/column GPIOs
34   are bundled to one single irq
35      </p></dd><dt><span class="term">clustered_irq_flags</span></dt><dd><p>
36   flags that are needed for the clustered irq
37      </p></dd><dt><span class="term">active_low</span></dt><dd><p>
38   gpio polarity
39      </p></dd><dt><span class="term">wakeup</span></dt><dd><p>
40   controls whether the device should be set up as wakeup
41   source
42      </p></dd><dt><span class="term">no_autorepeat</span></dt><dd><p>
43   disable key autorepeat
44      </p></dd></dl></div></div><div class="refsect1"><a name="idp1114726332"></a><h2>Description</h2><p>
45   This structure represents platform-specific data that use used by
46   matrix_keypad driver to perform proper initialization.
47</p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-struct-matrix-keymap-data.html">Prev</a>&#160;</td><td width="20%" align="center"><a accesskey="u" href="ch08s04.html">Up</a></td><td width="40%" align="right">&#160;<a accesskey="n" href="API-matrix-keypad-parse-of-params.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">struct matrix_keymap_data</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">matrix_keypad_parse_of_params</span></td></tr></table></div></body></html>
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