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>The Linux 2.4 Parallel Port Subsystem</TITLE
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>The Linux 2.4 Parallel Port Subsystem</H1
><H3
CLASS="AUTHOR"
><A
NAME="AEN5"
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>Tim Waugh</H3
><DIV
CLASS="AFFILIATION"
><DIV
CLASS="ADDRESS"
><P
CLASS="ADDRESS"
> <TT
CLASS="EMAIL"
><<A
HREF="mailto:twaugh@redhat.com"
>twaugh@redhat.com</A
>></TT
><br>
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><A
HREF="ln14.html"
>Copyright</A
> © 1999-2000 Tim Waugh</P
><HR></DIV
><DIV
CLASS="TOC"
><DL
><DT
><B
>Table of Contents</B
></DT
><DT
><A
HREF="c17.html"
>Design goals</A
></DT
><DD
><DL
><DT
><A
HREF="c17.html#AEN19"
>The problems</A
></DT
><DT
><A
HREF="x36.html"
>The solutions</A
></DT
></DL
></DD
><DT
><A
HREF="c56.html"
>Standard transfer modes</A
></DT
><DT
><A
HREF="c65.html"
>Structure</A
></DT
><DD
><DL
><DT
><A
HREF="c65.html#AEN72"
>Sharing core</A
></DT
><DT
><A
HREF="x78.html"
>Parports and their overrides</A
></DT
><DT
><A
HREF="x88.html"
>IEEE 1284 transfer modes</A
></DT
><DT
><A
HREF="x96.html"
>Pardevices and parport_drivers</A
></DT
><DT
><A
HREF="x123.html"
>The IEEE 1284.3 API</A
></DT
></DL
></DD
><DT
><A
HREF="c192.html"
>Device driver's view</A
></DT
><DT
><A
HREF="c419.html"
>Port drivers</A
></DT
><DT
><A
HREF="c452.html"
>The printer driver</A
></DT
><DT
><A
HREF="c587.html"
>User-level device drivers</A
></DT
><DD
><DL
><DT
><A
HREF="c587.html#AEN589"
>Introduction to ppdev</A
></DT
><DT
><A
HREF="x619.html"
>User-level or kernel-level driver?</A
></DT
><DT
><A
HREF="x623.html"
>Programming interface</A
></DT
><DD
><DL
><DT
><A
HREF="x623.html#AEN634"
>Starting and stopping: <TT
CLASS="FUNCTION"
>open</TT
> and
<TT
CLASS="FUNCTION"
>close</TT
></A
></DT
><DT
><A
HREF="x623.html#AEN642"
>Control: <TT
CLASS="FUNCTION"
>ioctl</TT
></A
></DT
><DT
><A
HREF="x623.html#AEN893"
>Transferring data: <TT
CLASS="FUNCTION"
>read</TT
> and
<TT
CLASS="FUNCTION"
>write</TT
></A
></DT
><DT
><A
HREF="x623.html#AEN902"
>Waiting for events: <TT
CLASS="FUNCTION"
>poll</TT
> and
<TT
CLASS="FUNCTION"
>select</TT
></A
></DT
></DL
></DD
><DT
><A
HREF="x916.html"
>Examples</A
></DT
></DL
></DD
><DT
><A
HREF="a950.html"
>Linux parallel port driver API reference</A
></DT
><DD
><DL
><DT
><A
HREF="r952.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_device_num</SPAN
></SPAN
></A
> -- convert device coordinates
</DT
><DT
><A
HREF="r992.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_device_coords</SPAN
></SPAN
></A
> -- convert canonical device number
</DT
><DT
><A
HREF="r1048.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_find_device</SPAN
></SPAN
></A
> -- find a specific device
</DT
><DT
><A
HREF="r1097.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_find_class</SPAN
></SPAN
></A
> -- find a device in a specified class
</DT
><DT
><A
HREF="r1138.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_register_driver</SPAN
></SPAN
></A
> -- register a parallel port device driver
</DT
><DT
><A
HREF="r1177.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_unregister_driver</SPAN
></SPAN
></A
> -- deregister a parallel port device driver
</DT
><DT
><A
HREF="r1215.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_get_port</SPAN
></SPAN
></A
> -- increment a port's reference count
</DT
><DT
><A
HREF="r1242.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_put_port</SPAN
></SPAN
></A
> -- decrement a port's reference count
</DT
><DT
><A
HREF="r1269.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_find_number</SPAN
></SPAN
></A
> -- find a parallel port by number
</DT
><DT
><A
HREF="r1300.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_find_base</SPAN
></SPAN
></A
> -- find a parallel port by base address
</DT
><DT
><A
HREF="r1331.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_register_device</SPAN
></SPAN
></A
> -- register a device on a parallel port
</DT
><DT
><A
HREF="r1428.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_unregister_device</SPAN
></SPAN
></A
> -- deregister a device on a parallel port
</DT
><DT
><A
HREF="r1455.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_open</SPAN
></SPAN
></A
> -- find a device by canonical device number
</DT
><DT
><A
HREF="r1533.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_close</SPAN
></SPAN
></A
> -- close a device opened with <TT
CLASS="FUNCTION"
>parport_open</TT
>
</DT
><DT
><A
HREF="r1563.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_claim</SPAN
></SPAN
></A
> -- claim access to a parallel port device
</DT
><DT
><A
HREF="r1590.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_claim_or_block</SPAN
></SPAN
></A
> -- claim access to a parallel port device
</DT
><DT
><A
HREF="r1617.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_release</SPAN
></SPAN
></A
> -- give up access to a parallel port device
</DT
><DT
><A
HREF="r1643.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_yield</SPAN
></SPAN
></A
> -- relinquish a parallel port temporarily
</DT
><DT
><A
HREF="r1675.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_yield_blocking</SPAN
></SPAN
></A
> -- relinquish a parallel port temporarily
</DT
><DT
><A
HREF="r1703.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_negotiate</SPAN
></SPAN
></A
> -- negotiate an IEEE 1284 mode
</DT
><DT
><A
HREF="r1739.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_write</SPAN
></SPAN
></A
> -- write a block of data to a parallel port
</DT
><DT
><A
HREF="r1786.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_read</SPAN
></SPAN
></A
> -- read a block of data from a parallel port
</DT
><DT
><A
HREF="r1833.html"
><SPAN
CLASS="phrase"
><SPAN
CLASS="PHRASE"
>parport_set_timeout</SPAN
></SPAN
></A
> -- set the inactivity timeout for a device
</DT
></DL
></DD
><DT
><A
HREF="a1871.html"
>The Linux 2.2 Parallel Port Subsystem</A
></DT
><DT
><A
HREF="a1909.html"
>GNU Free Documentation License</A
></DT
></DL
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