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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>Core Objects and Methods</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /><link rel="home" href="index.html" title="USB Gadget API for Linux" /><link rel="up" href="api.html" title="Chapter 3. Kernel Mode Gadget API" /><link rel="prev" href="API-usb-state-string.html" title="usb_state_string" /><link rel="next" href="API-struct-usb-request.html" title="struct usb_request" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Core Objects and Methods</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-usb-state-string.html">Prev</a> </td><th width="60%" align="center">Chapter 3. Kernel Mode Gadget API</th><td width="20%" align="right"> <a accesskey="n" href="API-struct-usb-request.html">Next</a></td></tr></table><hr /></div><div class="sect1"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="core"></a>Core Objects and Methods</h2></div></div></div><div class="toc"><dl class="toc"><dt><span class="refentrytitle"><a href="API-struct-usb-request.html"><span class="phrase">struct usb_request</span></a></span><span class="refpurpose"> —
describes one i/o request
</span></dt><dt><span class="refentrytitle"><a href="API-struct-usb-ep.html"><span class="phrase">struct usb_ep</span></a></span><span class="refpurpose"> —
device side representation of USB endpoint
</span></dt><dt><span class="refentrytitle"><a href="API-usb-ep-enable.html"><span class="phrase">usb_ep_enable</span></a></span><span class="refpurpose"> —
configure endpoint, making it usable
</span></dt><dt><span class="refentrytitle"><a href="API-usb-ep-disable.html"><span class="phrase">usb_ep_disable</span></a></span><span class="refpurpose"> —
endpoint is no longer usable
</span></dt><dt><span class="refentrytitle"><a href="API-usb-ep-alloc-request.html"><span class="phrase">usb_ep_alloc_request</span></a></span><span class="refpurpose"> —
allocate a request object to use with this endpoint
</span></dt><dt><span class="refentrytitle"><a href="API-usb-ep-free-request.html"><span class="phrase">usb_ep_free_request</span></a></span><span class="refpurpose"> —
frees a request object
</span></dt><dt><span class="refentrytitle"><a href="API-usb-ep-queue.html"><span class="phrase">usb_ep_queue</span></a></span><span class="refpurpose"> —
queues (submits) an I/O request to an endpoint.
</span></dt><dt><span class="refentrytitle"><a href="API-usb-ep-dequeue.html"><span class="phrase">usb_ep_dequeue</span></a></span><span class="refpurpose"> —
dequeues (cancels, unlinks) an I/O request from an endpoint
</span></dt><dt><span class="refentrytitle"><a href="API-usb-ep-set-halt.html"><span class="phrase">usb_ep_set_halt</span></a></span><span class="refpurpose"> —
sets the endpoint halt feature.
</span></dt><dt><span class="refentrytitle"><a href="API-usb-ep-clear-halt.html"><span class="phrase">usb_ep_clear_halt</span></a></span><span class="refpurpose"> —
clears endpoint halt, and resets toggle
</span></dt><dt><span class="refentrytitle"><a href="API-usb-ep-set-wedge.html"><span class="phrase">usb_ep_set_wedge</span></a></span><span class="refpurpose"> —
sets the halt feature and ignores clear requests
</span></dt><dt><span class="refentrytitle"><a href="API-usb-ep-fifo-status.html"><span class="phrase">usb_ep_fifo_status</span></a></span><span class="refpurpose"> —
returns number of bytes in fifo, or error
</span></dt><dt><span class="refentrytitle"><a href="API-usb-ep-fifo-flush.html"><span class="phrase">usb_ep_fifo_flush</span></a></span><span class="refpurpose"> —
flushes contents of a fifo
</span></dt><dt><span class="refentrytitle"><a href="API-struct-usb-gadget.html"><span class="phrase">struct usb_gadget</span></a></span><span class="refpurpose"> —
represents a usb slave device
</span></dt><dt><span class="refentrytitle"><a href="API-gadget-is-dualspeed.html"><span class="phrase">gadget_is_dualspeed</span></a></span><span class="refpurpose"> —
return true iff the hardware handles high speed
</span></dt><dt><span class="refentrytitle"><a href="API-gadget-is-superspeed.html"><span class="phrase">gadget_is_superspeed</span></a></span><span class="refpurpose"> —
return true if the hardware handles superspeed
</span></dt><dt><span class="refentrytitle"><a href="API-gadget-is-otg.html"><span class="phrase">gadget_is_otg</span></a></span><span class="refpurpose"> —
return true iff the hardware is OTG-ready
</span></dt><dt><span class="refentrytitle"><a href="API-usb-gadget-frame-number.html"><span class="phrase">usb_gadget_frame_number</span></a></span><span class="refpurpose"> —
returns the current frame number
</span></dt><dt><span class="refentrytitle"><a href="API-usb-gadget-wakeup.html"><span class="phrase">usb_gadget_wakeup</span></a></span><span class="refpurpose"> —
tries to wake up the host connected to this gadget
</span></dt><dt><span class="refentrytitle"><a href="API-usb-gadget-set-selfpowered.html"><span class="phrase">usb_gadget_set_selfpowered</span></a></span><span class="refpurpose"> —
sets the device selfpowered feature.
</span></dt><dt><span class="refentrytitle"><a href="API-usb-gadget-clear-selfpowered.html"><span class="phrase">usb_gadget_clear_selfpowered</span></a></span><span class="refpurpose"> —
clear the device selfpowered feature.
</span></dt><dt><span class="refentrytitle"><a href="API-usb-gadget-vbus-connect.html"><span class="phrase">usb_gadget_vbus_connect</span></a></span><span class="refpurpose"> —
Notify controller that VBUS is powered
</span></dt><dt><span class="refentrytitle"><a href="API-usb-gadget-vbus-draw.html"><span class="phrase">usb_gadget_vbus_draw</span></a></span><span class="refpurpose"> —
constrain controller's VBUS power usage
</span></dt><dt><span class="refentrytitle"><a href="API-usb-gadget-vbus-disconnect.html"><span class="phrase">usb_gadget_vbus_disconnect</span></a></span><span class="refpurpose"> —
notify controller about VBUS session end
</span></dt><dt><span class="refentrytitle"><a href="API-usb-gadget-connect.html"><span class="phrase">usb_gadget_connect</span></a></span><span class="refpurpose"> —
software-controlled connect to USB host
</span></dt><dt><span class="refentrytitle"><a href="API-usb-gadget-disconnect.html"><span class="phrase">usb_gadget_disconnect</span></a></span><span class="refpurpose"> —
software-controlled disconnect from USB host
</span></dt><dt><span class="refentrytitle"><a href="API-struct-usb-gadget-driver.html"><span class="phrase">struct usb_gadget_driver</span></a></span><span class="refpurpose"> —
driver for usb 'slave' devices
</span></dt><dt><span class="refentrytitle"><a href="API-usb-gadget-probe-driver.html"><span class="phrase">usb_gadget_probe_driver</span></a></span><span class="refpurpose"> —
probe a gadget driver
</span></dt><dt><span class="refentrytitle"><a href="API-usb-gadget-unregister-driver.html"><span class="phrase">usb_gadget_unregister_driver</span></a></span><span class="refpurpose"> —
unregister a gadget driver
</span></dt><dt><span class="refentrytitle"><a href="API-struct-usb-string.html"><span class="phrase">struct usb_string</span></a></span><span class="refpurpose"> —
wraps a C string and its USB id
</span></dt><dt><span class="refentrytitle"><a href="API-struct-usb-gadget-strings.html"><span class="phrase">struct usb_gadget_strings</span></a></span><span class="refpurpose"> —
a set of USB strings in a given language
</span></dt><dt><span class="refentrytitle"><a href="API-usb-free-descriptors.html"><span class="phrase">usb_free_descriptors</span></a></span><span class="refpurpose"> —
free descriptors returned by <code class="function">usb_copy_descriptors</code>
</span></dt></dl></div><p>These are declared in
<code class="filename"><linux/usb/gadget.h></code>,
and are used by gadget drivers to interact with
USB peripheral controller drivers.
</p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="API-usb-state-string.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="api.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="API-struct-usb-request.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top"><span class="phrase">usb_state_string</span> </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> <span class="phrase">struct usb_request</span></td></tr></table></div></body></html>
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