The new format should be easier to read to determine which bits
correspond to which data. It also brings all the manipulation logic to
the top of the function. This makes size and orientation reading more
clear.

Note that the impetus for this change is the forthcoming support for the
Magic Trackpad, which has a different touch data protocol.
Signed-off-by: NChase Douglas <chase.douglas@canonical.com>
Acked-by: NMichael Poole <mdpoole@troilus.org>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Only the first feature request is required to put the Magic Mouse into
multitouch mode. This is also the case for the Magic Trackpad, for which
support will be added in a later commit.
Signed-off-by: NChase Douglas <chase.douglas@canonical.com>
Acked-by: NMichael Poole <mdpoole@troilus.org>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

The timestamps from the device are currently stored in the private data
structure. These aren't used, so remove them. I've left a comment
detailing the protocol for future reference.
Signed-off-by: NChase Douglas <chase.douglas@canonical.com>
Acked-by: NMichael Poole <mdpoole@troilus.org>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

For the MT protocol, we need to properly keep track of each down touch.
This change simplifies the logic, and should make things easier when
support for the Magic Trackpad is added.
Signed-off-by: NChase Douglas <chase.douglas@canonical.com>
Acked-by: NMichael Poole <mdpoole@troilus.org>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

The JooJoo tablet (http://thejoojoo.com/) contains an "eGalax Inc. USB
TouchController", and this patch hooks it up to the egalax-touch driver.
Without the patch we don't get any cursor motion, since it comes through
Z/RX rather than X/Y.

(The egalax-touch driver does not yet generate a correct event sequence
for the "serial" protocol used by this device, though -- see the note
added to the code, which comes from research by Stéphane Chatty.)

Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Stéphane Chatty <chatty@enac.fr>
Signed-off-by: NChris Ball <cjb@laptop.org>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Commit bd25f4dd ("HID: hiddev: use usb_find_interface,
get rid of BKL") introduced using of private intfdata in hiddev for
purpose of storing hiddev pointer.

This is a problem, because intf pointer is already being set to struct
hid_device pointer by HID core. This obviously lead to memory corruptions
at device disconnect time, such as

WARNING: at lib/kobject.c:595 kobject_put+0x37/0x4b()
kobject: '(null)' (ffff88011e9cd898): is not initialized, yet kobject_put() is being called.

Convert hiddev into accessing hiddev through struct hid_device which is
in intfdata already.
Reported-and-tested-by: NMarkus Trippelsdorf <markus@trippelsdorf.de>
Reported-and-tested-by: NHeinz Diehl <htd@fritha.org>
Reported-and-tested-by: NAlan Ott <alan@signal11.us>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

One of our users reports consistently hitting a NULL dereference that
resolves to the "hid_to_usb_dev(hid);" call in hiddev_ioctl(), when
disconnecting a Lego WeDo USB HID device from an OLPC XO running
Scratch software.  There's a FIXME comment and a guard against the
dereference, but that happens farther down the function than the
initial dereference does.

This patch moves the call to be below the guard, and the user reports
that it fixes the problem for him.  OLPC bug report:
http://dev.laptop.org/ticket/10174Signed-off-by: NChris Ball <cjb@laptop.org>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Fix the free() ordering (which was never reached due to wrong check).
Signed-off-by: NBruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

"ref_cnt" is a point to the reference count and it's non-null.  We really
want to test the reference count itself.
Signed-off-by: NDan Carpenter <error27@gmail.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Change all call sites in drivers/input to not access the ABS axis
information directly anymore. Make them use the access helpers instead.

Also use input_set_abs_params() when possible.
Did some code refactoring as I was on it.
Signed-off-by: NDaniel Mack <daniel@caiaq.de>
Cc: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This reverts commit ed9eac5b. As
reported by Bastien Nocera, the device actually uses a completely
different protocol, so simply adding VID/PID doesn't work and
completely new driver will need to be written.
Reported-by: NBastien Nocera <hadess@hadess.net>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Remove 'default !EMBEDDED' from ACRUX force feedback driver
entry.

See commit message of 73d5e8f7 ("HID: fix up 'EMBEDDED' mess
in Kconfig") for explanation and reasoning.
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Adds force feedback support for ACRUX USB game controllers.
These devices are mass produced in China by several vendors.
Signed-off-by: NSergei Kolzun <x0r@dv-life.ru>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

These devices report a usage page of type "consumer" and a usage of
"Programmable buttons". They are hence ignored by the hid-input layer.

Force the registration of an input device by using the new quirk type
HID_QUIRK_HIDINPUT_FORCE.
Signed-off-by: NDaniel Mack <daniel@caiaq.de>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

For devices with exotic HID report descriptors, it might be necessary to
make the HID core force the registration of an input device. Make that
possible by introducing a new quirk type.
Signed-off-by: NDaniel Mack <daniel@caiaq.de>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Signed-off-by: NDaniel Mack <daniel@caiaq.de>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

This removes the private hiddev_table in the usbhid
driver and changes it to use usb_find_interface
instead.

The advantage is that we can avoid the race between
usb_register_dev and usb_open and no longer need the
big kernel lock.

This doesn't introduce race condition -- the intf pointer could be
invalidated only in hiddev_disconnect() through usb_deregister_dev(),
but that will block on minor_rwsem and not actually remove the device
until usb_open().
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: "Greg Kroah-Hartman" <gregkh@suse.de>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

SMART Technologies has recommended this change to fix a problem reported
with SMART Board series interactive whiteboards.

A description of the device-specific symptom follows:

  When the board is connected my mouse bounces up to the top left corner.

Bjorn has tested this fix with model SB680.
Tested-by: NBjorn Behrendt <bbehrendt@msjvermont.org>
Signed-off-by: NForest Bond <forest@alittletooquiet.net>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

There is only one extra button for Conceptronic that wasn't yet present.
The button has code 0xffbc0027 and the description is "Toggle between
display ratios". So I picked KEY_MODE for this button.
Signed-off-by: NKees Bakker <kees.bakker@xs4all.nl>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Hmmm. There are still people who have their editor setup with tabwidth 4.
Some of the entries were added with tabwidth 4, and for these people
the lineup looks OK. But in the Linux kernel source we use tabwidth 8.

This patch repairs that whitespace so that the number align properly.
Signed-off-by: NKees Bakker <kees.bakker@xs4all.nl>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

As our device may be hot-unplugged and framebuffer cannot handle
this case by itself we need to keep track of usage count so as
to release fb_info and framebuffer memory only after the last user
has closed framebuffer.

We need to do the freeing in a scheduled work as fb_release()
is called with fb_info lock held.
Signed-off-by: NBruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Reallocating memory in depth change does not work well if some
userspace application has mmapped() the framebuffer as that mapping
does not get adjusted (thus application continues to write to old
buffer).
In addition doing deferred_io_cleanup() and init() inside of set_par()
tends to deadlock with fbcon's flashing cursor.

Avoid all this by allocating a buffer that can hold 8bpp framebuffer
and just use 1/8 of it while running at 1bpp.
Signed-off-by: NBruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Add a minimal palette so fbcon does not try to dereference
a NULL point when fb is set to 8bpp.

fbcon stores pixels the other way around in bytes for 1bpp
than intially implemented, correct this.
Signed-off-by: NBruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

The Report ID wasn't sent as part of the payload for reports which were sent
over the control endpoint. This is required by section 8.1 of the HID spec.
Signed-off-by: NAlan Ott <alan@signal11.us>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

The X and Y values have two more significant bits in the same byte
that contains click status.  Include these in the reported value.
Thanks to Iain Hibbert of NetBSD for pointing this out.
Signed-off-by: NMichael Poole <mdpoole@troilus.org>
Acked-by: NChase Douglas <chase.douglas@canonical.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

The evdev multitouch protocol requires that a last MT sync event must be
sent after all touches are up. This change adds the last MT sync event
to the hid-magicmouse driver.

Also, don't send events when a touch leaves.
Signed-off-by: NChase Douglas <chase.douglas@canonical.com>
Acked-by: NMichael Poole <mdpoole@troilus.org>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Adjust ordering if framebuffer (un)registration and defio init/cleanup
to match the correct order (init defio, register FB ... unregister FB,
cleanup defio)
Acked-by: NJaya Kumar <jayakumar.lkml@gmail.com>
Signed-off-by: NBruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

The VENDOR_IDs were mostly in alphabetical order, but some of the
newer entries were not added as such. Some entries were added just
at the end, some were added in the middle.

This patch places the entries once again in a properly sorted
order.
Signed-off-by: NKees Bakker <kees.bakker@xs4all.nl>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Patch for linux-2.6.35-rc4 mainline kernel to enable Paul Qureshi's
Retro Adapter [http://keio.dk/retroadapter.html], an open source USB
device which allows controllers and joysticks from classic computers
and consoles to work on modern PCs, to appear as two separate devices
under Linux.
Signed-off-by: NPeter Edwards <samwise@bagshot-row.org>
Acked-by: NPaul Qureshi <retro@world3.net>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

This USB flight yoke needs the NOGET quirk, like most of CH's other
products. This patch adds that.
Signed-off-by: NJonathan Rockway <jon@jrock.us>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

This patch removes the annoying feature of Elecoms BM084 to constantly scroll to the right.
The device can be found at:
http://www.dealextreme.com/details.dx/sku.15402Signed-off-by: NRichard Nauber <Richard.Nauber@gmail.com>
[jkosina@suse.cz: fix build error]
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

The device is handled by usbtouchscreen driver.
Signed-off-by: NPetr Štetiar <ynezz@true.cz>
Acked-by: NJiri Kosina <jkosina@suse.cz>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Mimicks OS X behavior.
Signed-off-by: NChase Douglas <chase.douglas@canonical.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

The new scroll_speed param takes an integer value from 0 to 63, where 0
is slowest and 63 is fastest. The default of 32 remains the same. This
parameter also affects scroll acceleration linearly.

A second part of this change is a tightly coupled modification to the
scroll acceleration. Previously, scroll acceleration could be reset
without lifting the scroll finger. This is rather unintuitive and hard
to control in the case where a user wants faster scrolling, but wants to
hold the scroll touch for longer than a moment.

Note that scroll acceleration levels are now 1-7, where 7 is slowest. In
the previous implementation, there were 8 levels defined, but it was
impossible to start at the slowest level. In order to keep the default
scroll speed unchanged, only 7 levels are used now.
Signed-off-by: NChase Douglas <chase.douglas@canonical.com>
Acked-by: NMichael Poole <mdpoole@troilus.org>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Before this change, sequential scroll events would take a variable
amount of movement due to incorrect accounting. This change ensures all
scroll movements require a deterministic touch movement for an action to
occur.
Signed-off-by: NChase Douglas <chase.douglas@canonical.com>
Acked-by: NMichael Poole <mdpoole@troilus.org>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

The MT devices produce a lot of data. Tell the underlying input device
approximately how many events will be sent per synchronization, to allow
for better buffering. The number is a template based on continuously
reporting details for each finger on a single hand.
Signed-off-by: NHenrik Rydberg <rydberg@euromail.se>
Acked-by: NJiri Kosina <jkosina@suse.cz>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The newest version of the accompanying userland tools cuts backward
compatibility and uses libudev to find its devices superseding the
quirky kone_abi_version sysfs attribute. Therefore it should be removed.
Signed-off-by: NStefan Achatz <erazor_de@users.sourceforge.net>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Fixing wrong calculated offsets in bin_attribute read functions.
Signed-off-by: NStefan Achatz <erazor_de@users.sourceforge.net>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

The path around the loop ends with the lock held, so the call to mutex_lock
is moved before the beginning of the loop.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@locked@
expression E1;
position p;
@@

read_lock(E1@p,...);

@r exists@
expression x <= locked.E1;
expression locked.E1;
expression E2;
identifier lock;
position locked.p,p1,p2;
@@

*lock@p1 (E1@p,...);
... when != E1
    when != \(x = E2\|&x\)
*lock@p2 (E1,...);
// </smpl>
Signed-off-by: NJulia Lawall <julia@diku.dk>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Signed-off-by: NMicki Balanga <micki@n-trig.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>