It is a little bit inconvenient for people who have some non-standard
HID hardware (usually violating the HID specification) to have to
recompile kernel with CONFIG_HID_DEBUG to be able to see kernel's perspective
of the HID report descriptor and observe the parsed events. Plus the messages
are then mixed up inconveniently with the rest of the dmesg stuff.

This patch implements /sys/kernel/debug/hid/<device>/rdesc file, which
represents the kernel's view of report descriptor (both the raw report
descriptor data and parsed contents).

With all the device-specific debug data being available through debugfs, there
is no need for keeping CONFIG_HID_DEBUG, as the 'debug' parameter to the
hid module will now only output only driver-specific debugging options, which has
absolutely minimal memory footprint, just a few error messages and one global
flag (hid_debug).

We use the current set of output formatting functions. The ones that need to be
used both for one-shot rdesc seq_file and also for continuous flow of data
(individual reports, as being sent by the device) distinguish according to the
passed seq_file parameter, and if it is NULL, it still output to kernel ringbuffer,
otherwise the corresponding seq_file is used for output.

The format of the output is preserved.
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

hid-debug.h contains a lot of code, and should not therefore
be a header.

This patch moves the code to generic hid layer as .c source, and
introduces CONFIG_HID_DEBUG to conditionally compile it, instead
of playing with #define DEBUG and including hid-debug.h.
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

This trivial change adds some missing enum values to the hid-debug output.
Signed-off-by: NSimon Budig <simon@budig.de>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

The "big main" split of USB HID code into generic HID code and
USB-transport specific HID handling.
Signed-off-by: NJiri Kosina <jkosina@suse.cz>
Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Fix a mispelling of the korean alphabet name in the input subsystem.
See http://en.wikipedia.org/wiki/Hangeul#Names for more details.

KEY_HANGUEL left to not break people
Signed-off-by: NJerome Pinot <ngc891@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Signed-off-by: NMichael Hanselmann <linux-kernel@hansmi.ch>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Signed-off-by: NMichael Hanselmann <linux-kernel@hansmi.ch>
Acked-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Extend mapping of the consumer usage page in hid-input.c to handle
more cases appearing on new USB keyboards.
Signed-off-by: NVojtech Pavlik <vojtech@suse.cz>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Add simulation usage page mappings to hid-input.c to support
a new crop of joysticks using them to designate Rudder and
Throttle controls.
Signed-off-by: NVojtech Pavlik <vojtech@suse.cz>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!