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History log of /drivers/input/mouse/hgpk.c
Revision Date Author Comments
fb4f552e895cec29934d94a99cbd1f1f00448a88 13-Sep-2012 Andy Shevchenko <andriy.shevchenko@linux.intel.com> Input: hgpk - use %*ph to dump small buffer

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
c35c0e7d425c11f629d9d037df6c37a7ffebcd96 24-Feb-2012 Paul Fox <pgf@laptop.org> Input: psmouse - use psmouse_[de]activate() from sentelic and hgpk drivers

Make use of psmouse_activate() and psmouse_deactivate() from psmouse-base.c

Signed-off-by: Andres Salomon <dilinger@queued.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
76496e7a02e99d42844f4fffa145b81e513e7acd 09-Nov-2011 JJ Ding <dgdunix@gmail.com> Input: convert obsolete strict_strtox to kstrtox

With commit 67d0a0754455f89ef3946946159d8ec9e45ce33a we mark strict_strtox
as obsolete. Convert all remaining such uses in drivers/input/.

Also change long to appropriate types, and return error conditions
from kstrtox separately, as Dmitry sugguests.

Signed-off-by: JJ Ding <dgdunix@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
b5d21704361eefe337a36ebbb57a1d9927132511 11-Oct-2011 Dmitry Torokhov <dmitry.torokhov@gmail.com> Input: psmouse - switch to using dev_*() for messages

This will ensure our reporting is consistent with the rest of the system
and we do not refer to obsolete source file names.

Reviewed-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Reviewed-by: JJ Ding <dgdunix@gmail.com>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
ab3d0abe2e4c1f164af7a6cc3694fcb8c24a57ee 30-Jul-2011 Randy Dunlap <rdunlap@xenotime.net> Input: psmouse - hgpk.c needs module.h

hgpk.c uses interfaces from linux/module.h, so it should include that file.
This fixes build errors.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
20a4c261ad9cec39942257b1f91765a4b238db05 15-Nov-2010 Paul Fox <pgf@laptop.org> Input: hgpk - fix powersave mode

Recent testing of this codepath showed that it wasn't working,
perhaps due to changes within the input layer. This fixes it.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
34caed2082105a6d9f5aaba1cf4e02760cbee14e 15-Nov-2010 Daniel Drake <dsd@laptop.org> Input: hgpk - recalibration tweaks

Disable the recalibration guard where new recalibrations are triggered
if we detect a packet too soon after calibrating - we found that this
results in erroneous recalibrations, and if the recalibration failed
then the rest of our badness-detection code will request another.

Add a module option disabling all of the recalibration code, in case
an OLPC deployment thinks all of the workarounds we have are doing
more damage than good and wants to experiment with them all disabled.

Based on work by Paul Fox.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
67f56bb0f4997b55291c162077e02e4f29639fc2 15-Nov-2010 Daniel Drake <dsd@laptop.org> Input: hgpk - detect simple mode overflows

Based on work by Paul Fox.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
a309cdc778b9eece59b34e9e1c26e41476dbbcd6 12-Nov-2010 Daniel Drake <dsd@laptop.org> Input: hgpk - extend jumpiness detection

In addition to forcing recalibrations upon detection of cursor jumps (and
performing them quicker than before), detect and discard errant 'jump'
packets caused by a firmware bug, which are then repeated with each one
being approximately half the delta of the one previously (as if it is
averaging out)

Based on original work by Paul Fox.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
c0dc8342656a1425c31dcc505072f2387f0f0c92 12-Nov-2010 Daniel Drake <dsd@laptop.org> Input: hgpk - rework spew detection

The old implementation of spew detection simply tracked the overall
position delta of the cursor over every 100 packets. We found that
this causes occasional false positives in spew detection, and also
that the conditions of the spewy packets are perhaps more fixed than
we once thought.

Rework the spew detection to look for packets of specific small
delta, and only recalibrating if the overall movement delta stays
within expected bounds.

Also discard duplicate packets in the advanced mode, which appear
to be very common. If we don't, the spew detection kicks in far
too early. If we get a large spew of duplicates, request a
recalibration straight up.

Based on earlier work by Paul Fox.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
ca94ec43540ce5d93fd30a3bf88321b6f11ed51a 12-Nov-2010 Daniel Drake <dsd@laptop.org> Input: hgpk - support GlideSensor and PenTablet modes

Add a "hgpk_mode" sysfs attribute that allows selection between 3 options:
Mouse (the existing option), GlideSensor and PenTablet.

GlideSensor is an enhanced protocol for the regular touchpad mode that
additionally reports pressure and uses absolute coordinates. We suspect
that it may be more reliable than mouse mode in some environments.

PenTablet mode puts the touchpad into resistive mode, you must then use
a stylus as an input. We suspect this is the most reliable way to drive
the touchpad.

The GlideSensor and PenTablet devices expose themselves with the
intention of being combined with the synaptics X11 input driver.

Based on earlier work by Paul Fox.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
a62f0d27b4196bad5e900d766b285feb7069cd16 19-May-2010 Dmitry Torokhov <dmitry.torokhov@gmail.com> Input: psmouse - small formatting changes to better follow coding style

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
5a0e3ad6af8660be21ca98a971cd00f331318c05 24-Mar-2010 Tejun Heo <tj@kernel.org> include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.

2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).

* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
3032458e38b583c92842818871e85c0f936b8645 06-Jan-2010 Dmitry Torokhov <dmitry.torokhov@gmail.com> Input: psmouse - remove unused 'autocal' parameter from hgpk protocol

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
c6bde2d9cb75a41cd2b331953784843b4caa89df 30-Dec-2009 René Bolldorf <xsecute@googlemail.com> Input: psmouse - fix compile warning in hgpk module

The variable 'dev' is unused in function 'hgpk_register'.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
315eb996d5505112b22452ccbc7e01fb02eaae81 17-Nov-2009 Dmitry Torokhov <dmitry.torokhov@gmail.com> Input: psmouse - rework setting of BTN_MIDDLE capability

Do not start protocol detection assuming that middle mouse is present,
instead let individual protocols explicitly set this capability.
This fixes issue with Synaptics touchpads pretending that they have
middle button when hardware clearly reports otherwise.

Reported-and-tested-by: Andrey Borzenkov <arvidjaar@mail.ru>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
b7802c5c1ea9563f3746bea09c214ccedc8600f4 10-Sep-2009 Dmitry Torokhov <dmitry.torokhov@gmail.com> Input: psmouse - use boolean type

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
c46dd1eb9a4f1b8c1bb597a75199e3d34fb7b43b 05-Aug-2009 Paul Fox <pgf@laptop.org> Input: hgpk - forced recalibration for the OLPC touchpad

The OLPC XO laptop incorporates a combination touchpad/tablet device
which unfortunately requires frequent recalibration. The driver will
force this automatically when various suspicious behaviors are
observed, and the user can recalibrate manually (with a special
keyboard sequence). There's currently no way, however, for an external
program to cause recalibration. We can not use the reconnect
capability which is already available in /sys because full reset of
the touchpad takes 1.1 - 1.2 secons which is too long.

This patch creates a new node in /sys which, when written with '1',
will force a touchpad recalibration; no other writes (or reads)
of this node are supported.

Signed-off-by: Paul Fox <pgf@laptop.org>
Acked-by: Andres Salomon <dilinger@collabora.co.uk>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
bf6aede712334d7338d5c47a5ee5ba3883c82a61 03-Apr-2009 Jean Delvare <khali@linux-fr.org> workqueue: add to_delayed_work() helper function

It is a fairly common operation to have a pointer to a work and to need a
pointer to the delayed work it is contained in. In particular, all
delayed works which want to rearm themselves will have to do that. So it
would seem fair to offer a helper function for this operation.

[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Greg KH <greg@kroah.com>
Cc: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
0f4954819fb6f840d46076f0dbd313ef5da48f5d 28-Feb-2009 Andy Whitcroft <apw@canonical.com> Input: psmouse - add newline to OLPC HGPK touchpad debugging

When probing for the OLPC HGPK touchpad the ID of the probed touchpad is
emitted, but the debug is missing the terminating newline. This causes
later information to run into it, and for that to be categorised
incorrectly at KERN_DBG. Fix this up.

Reported-by: Matt Zimmerman <mdz@canonical.com>
Signed-off-by: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
8bbf2703c4f676e6e5414672dd460f7d2f979ed5 20-Dec-2008 Paul Fox <pgf@laptop.org> Input: psmouse - add module parameters to control OLPC touchpad delays

The HPGK touchpad that is found on the XO driver has historically
exhibitted eratic behaviour in various environments (very dry,
very humid, etc) that can be worked around via some delays. This
patch turns those delays into module parameters to make testing
simpler.

Signed-off-by: Paul Fox <pgf@laptop.org>
Signed-off-by: Deepak Saxena <dsaxena@laptop.org>
Acked-By: Andres Salomon <dilinger@debian.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
5fb17fd9a2d05be77be91369aa2f7b0db42fc8b4 11-Nov-2008 Andres Salomon <dilinger@queued.net> Input: psmouse - fix incorrect validate_byte check in OLPC protocol

The validate_byte check logic was backwards; it should return true for
an *invalid* packet. Thanks to Jeremy Katz for spotting this one.

Signed-off-by: Andres Salomon <dilinger@debian.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
df08ef27a7f91961c91a2a718f5d1e616f1c8e57 16-Sep-2008 Andres Salomon <dilinger@queued.net> Input: psmouse - add OLPC touchpad driver

This adds support for OLPC's touchpad. It has lots of neat features,
none of which are enabled because the hardware is too buggy. Instead,
we use it like a normal touchpad, but with a number of workarounds in
place to deal with the frequent hardware spasms. Humidity changes,
sweat, tinfoil underwear, plugging in AC, drinks, evil felines.. All
tend to cause the touchpad to freak out.

Signed-off-by: Andres Salomon <dilinger@debian.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>