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-<table class="head">
- <tr>
- <td class="head-ltitle">INTERSIL7170(4)</td>
- <td class="head-vol">Device Drivers Manual</td>
- <td class="head-rtitle">INTERSIL7170(4)</td>
- </tr>
-</table>
-<div class="manual-text">
-<section class="Sh">
-<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
-<p class="Pp"><code class="Nm">intersil7170</code> &#x2014;
- <span class="Nd">Intersil ICM7170 time-of-day clock driver</span></p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
-<p class="Pp"><code class="In">#include
- &lt;<a class="In">dev/ic/intersil7170reg.h</a>&gt;</code>
- <br/>
- <code class="In">#include
- &lt;<a class="In">dev/ic/intersil7170var.h</a>&gt;</code></p>
-<p class="Pp"><code class="Cd">define intersil7170</code>
- <br/>
- <code class="Cd">file dev/ic/intersil7170.c intersil7170</code></p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
-<p class="Pp">The <code class="Nm">intersil7170</code> driver provides access to
- the Intersil ICM7170 time-of-day clock chip. Access methods to retrieve and
- set date and time are provided through the
- <a class="permalink" href="#TODR"><i class="Em" id="TODR">TODR</i></a>
- interface defined in <a class="Xr">todr(9)</a>.</p>
-<p class="Pp" id="intersil7170_attach">To tie an instance of this device to the
- system, use the
- <a class="permalink" href="#intersil7170_attach"><code class="Fn">intersil7170_attach</code></a>()
- function and the <var class="Fa">intersil7170_softc</var> structure defined
- as follows:</p>
-<p class="Pp" id="intersil7170_attach~2"><var class="Ft">void</var>
- <a class="permalink" href="#intersil7170_attach~2"><code class="Fn">intersil7170_attach</code></a>(<var class="Fa">struct
- intersil7170_softc *</var>)</p>
-<div class="Bd Pp Li">
-<pre>struct intersil7170_softc {
- struct device sc_dev;
- bus_space_tag_t sc_bst;
- bus_space_handle_t sc_bsh;
- struct todr_chip_handle sc_handle;
- u_int sc_year0;
- u_int sc_flag;
-};</pre>
-</div>
-<div class="Bd-indent">
-<dl class="Bl-tag">
- <dt><var class="Fa">bus_tag</var></dt>
- <dd style="width: auto;">&#x00A0;</dd>
- <dt><var class="Fa">bus_handle</var></dt>
- <dd>Specify bus space access to the chip's non-volatile memory (including the
- clock registers).</dd>
- <dt id="todr_attach"><var class="Fa">sc_handle</var></dt>
- <dd>TODR handle passed to the
- <a class="permalink" href="#todr_attach"><code class="Fn">todr_attach</code></a>()
- function to register <a class="Xr">todr(9)</a> interface.</dd>
- <dt><var class="Fa">sc_year0</var></dt>
- <dd>The actual year represented by the clock's &#x2018;year&#x2019; counter.
- This is generally dependent on the system configuration in which the clock
- device is mounted. For instance, on Sun Microsystems machines the
- convention is to have clock's two-digit year represent the year 1968.</dd>
- <dt><var class="Fa">sc_flag</var></dt>
- <dd>This flag is used to specify machine-dependent features.</dd>
-</dl>
-</div>
-<p class="Pp">Note that if the resulting date retrieved with the todr_gettime()
- method is earlier that January 1, 1970, the driver will assume that the
- chip's year counter actually represents a year in the 21st century. This
- behaviour can be overridden by setting the
- <var class="Va">INTERSIL7170_NO_CENT_ADJUST</var> flag in
- <var class="Fa">sc_flag</var>.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
- ALSO</a></h1>
-<p class="Pp"><a class="Xr">intro(4)</a>, <a class="Xr">todr(9)</a></p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
-<p class="Pp">The <code class="Nm">intersil7170</code> driver first appeared in
- <span class="Ux">NetBSD 1.5</span>.</p>
-</section>
-<section class="Sh">
-<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
-<p class="Pp">The <code class="Nm">intersil7170</code> driver was written by
- <span class="An">Paul Kranenburg</span> &#x27E8;pk@NetBSD.org&#x27E9;.</p>
-</section>
-</div>
-<table class="foot">
- <tr>
- <td class="foot-date">October 1, 2006</td>
- <td class="foot-os">NetBSD 10.1</td>
- </tr>
-</table>