=pod

=head1 NAME

Linux::Sysfs::Driver - sysfs drivers

=head1 SYNOPSIS

    my $driver = Linux::Sysfs::Driver->open('pci', 'tg3');

    my @attrs   = $driver->get_attrs;
    my @devices = $driver->get_devices;

    $driver->close;

=head1 DESCRIPTION

Drivers are represented in sysfs under the /sys/bus/xxx/drivers (xxx being the
bus type, such as "pci", "usb, and so on).

=head1 METHODS

=over

=item B<open>

    my $driver = Linux::Sysfs::Driver->open($bus_name, $name);

Given the name of the bus, C<$bus_name>, on which to look for, this method
locates a given driver and returns a Linux::Sysfs::Driver instance
corresponding to the requested device or undef, if no matching driver was
found.

=item B<open_path>

    my $driver = Linux::Sysfs::Driver->open_path($path);

Opens driver at specific C<$path>. Returns a Linux::Sysfs::Driver instance on
success or undef on failure.

=item B<close>

    $driver->close;

Closes and cleans up C<$driver>.

=item B<get_attr>

=item B<get_attribute>

    my $attr = $driver->get_attribute($name);

Searches supplied C<$driver>'s attributes by C<$name> and returns the
corresponding Linux::Sysfs::Attribute instance or undef, of no matching
attribute was found.

=item B<get_attrs>

=item B<get_attributes>

    my @attrs = $driver->get_attributes;

Takes a C<$driver> and returns a list of Linux::Sysfs::Attribute instances for
the driver.

=item B<get_devices>

    my @devices = $driver->get_devices;

Returns a list of Linux::Sysfs::Device instances that use this C<$driver>.

=item B<get_module>

    my $module = $driver->get_module;

Returns the module that the C<$driver> is using.

=item B<name>

    my $name = $driver->name;

Returns the C<$driver>'s name.

=item B<path>

    my $path = $driver->path;

Returns the C<$driver>'s full path in sysfs.

=item B<bus>

    my $bus_name = $driver->bus;

Returns the name of the bus on which the C<$device> is registered.

=back

=head1 AUTHOR

Florian Ragwitz E<lt>rafl@debian.orgE<gt>

=head1 COPYRIGHT & LICENSE

Copyright 2006 Florian Ragwitz, all rights reserved.

This library is free software; you can redistribute it and/or modify it
under the terms of the GNU Library General Public License as published
by the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Library General Public License for more details.

You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307
USA.

=cut