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+<table class="head">
+ <tr>
+ <td class="head-ltitle">BTSCO(4)</td>
+ <td class="head-vol">Device Drivers Manual</td>
+ <td class="head-rtitle">BTSCO(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">btsco</code> &#x2014; <span class="Nd">Bluetooth
+ SCO Audio</span></p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
+<p class="Pp"><code class="Cd">btsco* at bthub?</code>
+ <br/>
+ <code class="Cd">audio* at audiobus?</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">btsco</code> driver provides support for
+ Bluetooth SCO (Synchronous connection-oriented) Audio devices through the
+ <a class="Xr">audio(4)</a> driver.</p>
+<p class="Pp">The <code class="Nm">btsco</code> driver must be configured at run
+ time with the <a class="Xr">btdevctl(8)</a> program. The following
+ properties are used by the <code class="Nm">btsco</code> driver during
+ autoconfiguration:</p>
+<dl class="Bl-tag">
+ <dt>local-bdaddr</dt>
+ <dd>Local device address.</dd>
+ <dt>remote-bdaddr</dt>
+ <dd>Remote device address.</dd>
+ <dt>service-name</dt>
+ <dd>The <code class="Nm">btsco</code> driver matches the &#x2018;HF&#x2019;
+ and &#x2018;HSET&#x2019; services. For the &#x2018;HF&#x2019; service, the
+ <code class="Nm">btsco</code> device will, on <a class="Xr">open(2)</a>,
+ listen for incoming connections from the remote device. Otherwise,
+ <code class="Nm">btsco</code> will attempt to initiate a connection to the
+ remote device.</dd>
+ <dt>rfcomm-channel</dt>
+ <dd>This integer value is not used directly, but will be stored and passed via
+ the <code class="Dv">BTSCO_INFO</code> ioctl as below:</dd>
+</dl>
+<p class="Pp">SCO connections require a baseband connection between the two
+ devices before they can be created. The <code class="Nm">btsco</code> driver
+ does not create this, but can provide information to facilitate an
+ application setting up a control channel prior to use, via the
+ <code class="Dv">BTSCO_INFO</code> <a class="Xr">ioctl(2)</a> call on the
+ mixer device, which returns a <var class="Ar">btsco_info</var> structure as
+ follows:</p>
+<div class="Bd Pp Li">
+<pre>#include &lt;dev/bluetooth/btsco.h&gt;
+
+struct btsco_info {
+ bdaddr_t laddr; /* controller bdaddr */
+ bdaddr_t raddr; /* headset bdaddr */
+ uint8_t channel; /* RFCOMM channel */
+ int vgs; /* mixer index speaker */
+ int vgm; /* mixer index mic */
+};
+
+#define BTSCO_INFO _IOR('b', 16, struct btsco_info)</pre>
+</div>
+<p class="Pp">The <code class="Nm">btsco</code> driver can be configured to act
+ in Connect or Listen mode. In Connect mode, the
+ <code class="Nm">btsco</code> driver will initiate a connection to the
+ remote device on an <a class="Xr">open(2)</a> call, whereas in Listen mode,
+ <a class="Xr">open(2)</a> will block until the remote device initiates the
+ connection.</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">bthset(1)</a>, <a class="Xr">ioctl(2)</a>,
+ <a class="Xr">audio(4)</a>, <a class="Xr">bluetooth(4)</a>,
+ <a class="Xr">bthub(4)</a>, <a class="Xr">btdevctl(8)</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">btsco</code> driver was written for
+ <span class="Ux">NetBSD 4.0</span> by <span class="An">Iain Hibbert</span>
+ under the sponsorship of Itronix, Inc.</p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="BUGS"><a class="permalink" href="#BUGS">BUGS</a></h1>
+<p class="Pp"><code class="Nm">btsco</code> takes no notice of the HCI Voice
+ Setting in the Bluetooth controller, and this must be 0x0060 (the default)
+ as alternate values are currently unsupported.</p>
+</section>
+</div>
+<table class="foot">
+ <tr>
+ <td class="foot-date">November 29, 2014</td>
+ <td class="foot-os">NetBSD 10.1</td>
+ </tr>
+</table>