Commit Graph

188 Commits

Author SHA1 Message Date
Dmitry Torokhov 67b989a0c1 Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rydberg/input-mt into next
Conflicts:
	drivers/input/Makefile
2010-12-16 09:17:48 -08:00
Henrik Rydberg 47c78e8913 input: mt: Break out slots handling
In preparation for common code to handle a larger set of MT slots
devices, move the slots handling over to a separate file.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
2010-12-16 10:39:57 +01:00
Joe Perches da0c490115 Input: use pr_fmt and pr_<level>
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-11-30 23:10:26 -08:00
Linus Torvalds 864ee6cb22 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: fix typo in keycode validation supporting large scancodes
  Input: aiptek - tighten up permissions on sysfs attributes
  Input: sysrq - pass along lone Alt + SysRq
2010-11-19 10:31:04 -08:00
Mattia Dongili de391d1250 Input: fix typo in keycode validation supporting large scancodes
Check the input_keymap_entry keycode size (u32) instead of the device's
(void*) when validating that keycode value can be stored in the keymap.

Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=22722

Signed-off-by: Mattia Dongili <malattia@linux.it>
Tested-by: Norbert Preining <preining@logic.at>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-11-18 09:20:42 -08:00
Arnd Bergmann 451a3c24b0 BKL: remove extraneous #include <smp_lock.h>
The big kernel lock has been removed from all these files at some point,
leaving only the #include.

Remove this too as a cleanup.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-11-17 08:59:32 -08:00
Dmitry Torokhov 5fdbe44d03 Input: do not pass injected events back to the originating handler
Sometimes input handlers (as opposed to input devices) have a need to
inject (or re-inject) events back into input core. For example sysrq
filter may want to inject previously suppressed Alt-SysRq so that user
can take a screen print. In this case we do not want to pass such events
back to the same same handler that injected them to avoid loops.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-11-11 01:01:26 -08:00
Dmitry Torokhov b50b521694 Input: export input_reset_device() for use in KGDB
KGDB, much like the resume process, needs to be able to mark all keys that
were pressed at the time we dropped into the debuggers as "released", since
it is unlikely that the keys stay pressed for the entire duration of the
debug session.

Also we need to make sure that input_reset_device() and input_dev_suspend()
only attempt to change state of currenlt opened devices since closed devices
may not be ready to accept IO requests.

Tested-by: Jason Wessel <jason.wessel@windriver.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-11-03 11:04:46 -07:00
Linus Torvalds 3a99c63190 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (75 commits)
  Input: wacom - specify Cinitq supported tools
  Input: ab8500-ponkey - fix IRQ freeing in error path
  Input: adp5588-keys - use more obvious i2c_device_id name string
  Input: ad7877 - switch to using threaded IRQ
  Input: ad7877 - use attribute group to control visibility of attributes
  Input: serio - add support for PS2Mult multiplexer protocol
  Input: wacom - properly enable runtime PM
  Input: ad7877 - filter events where pressure is beyond the maximum
  Input: ad7877 - implement EV_KEY:BTN_TOUCH reporting
  Input: ad7877 - implement specified chip select behavior
  Input: hp680_ts_input - use cancel_delayed_work_sync()
  Input: mousedev - correct lockdep annotation
  Input: ads7846 - switch to using threaded IRQ
  Input: serio - support multiple child devices per single parent
  Input: synaptics - simplify pass-through port handling
  Input: add ROHM BU21013 touch panel controller support
  Input: omap4-keypad - wake-up on events & long presses
  Input: omap4-keypad - fix interrupt line configuration
  Input: omap4-keypad - SYSCONFIG register configuration
  Input: omap4-keypad - use platform device helpers
  ...
2010-10-25 07:59:01 -07:00
Arnd Bergmann 6038f373a3 llseek: automatically add .llseek fop
All file_operations should get a .llseek operation so we can make
nonseekable_open the default for future file operations without a
.llseek pointer.

The three cases that we can automatically detect are no_llseek, seq_lseek
and default_llseek. For cases where we can we can automatically prove that
the file offset is always ignored, we use noop_llseek, which maintains
the current behavior of not returning an error from a seek.

New drivers should normally not use noop_llseek but instead use no_llseek
and call nonseekable_open at open time.  Existing drivers can be converted
to do the same when the maintainer knows for certain that no user code
relies on calling seek on the device file.

The generated code is often incorrectly indented and right now contains
comments that clarify for each added line why a specific variant was
chosen. In the version that gets submitted upstream, the comments will
be gone and I will manually fix the indentation, because there does not
seem to be a way to do that using coccinelle.

Some amount of new code is currently sitting in linux-next that should get
the same modifications, which I will do at the end of the merge window.

Many thanks to Julia Lawall for helping me learn to write a semantic
patch that does all this.

===== begin semantic patch =====
// This adds an llseek= method to all file operations,
// as a preparation for making no_llseek the default.
//
// The rules are
// - use no_llseek explicitly if we do nonseekable_open
// - use seq_lseek for sequential files
// - use default_llseek if we know we access f_pos
// - use noop_llseek if we know we don't access f_pos,
//   but we still want to allow users to call lseek
//
@ open1 exists @
identifier nested_open;
@@
nested_open(...)
{
<+...
nonseekable_open(...)
...+>
}

@ open exists@
identifier open_f;
identifier i, f;
identifier open1.nested_open;
@@
int open_f(struct inode *i, struct file *f)
{
<+...
(
nonseekable_open(...)
|
nested_open(...)
)
...+>
}

@ read disable optional_qualifier exists @
identifier read_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
expression E;
identifier func;
@@
ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)
{
<+...
(
   *off = E
|
   *off += E
|
   func(..., off, ...)
|
   E = *off
)
...+>
}

@ read_no_fpos disable optional_qualifier exists @
identifier read_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
@@
ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)
{
... when != off
}

@ write @
identifier write_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
expression E;
identifier func;
@@
ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)
{
<+...
(
  *off = E
|
  *off += E
|
  func(..., off, ...)
|
  E = *off
)
...+>
}

@ write_no_fpos @
identifier write_f;
identifier f, p, s, off;
type ssize_t, size_t, loff_t;
@@
ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)
{
... when != off
}

@ fops0 @
identifier fops;
@@
struct file_operations fops = {
 ...
};

@ has_llseek depends on fops0 @
identifier fops0.fops;
identifier llseek_f;
@@
struct file_operations fops = {
...
 .llseek = llseek_f,
...
};

@ has_read depends on fops0 @
identifier fops0.fops;
identifier read_f;
@@
struct file_operations fops = {
...
 .read = read_f,
...
};

@ has_write depends on fops0 @
identifier fops0.fops;
identifier write_f;
@@
struct file_operations fops = {
...
 .write = write_f,
...
};

@ has_open depends on fops0 @
identifier fops0.fops;
identifier open_f;
@@
struct file_operations fops = {
...
 .open = open_f,
...
};

// use no_llseek if we call nonseekable_open
////////////////////////////////////////////
@ nonseekable1 depends on !has_llseek && has_open @
identifier fops0.fops;
identifier nso ~= "nonseekable_open";
@@
struct file_operations fops = {
...  .open = nso, ...
+.llseek = no_llseek, /* nonseekable */
};

@ nonseekable2 depends on !has_llseek @
identifier fops0.fops;
identifier open.open_f;
@@
struct file_operations fops = {
...  .open = open_f, ...
+.llseek = no_llseek, /* open uses nonseekable */
};

// use seq_lseek for sequential files
/////////////////////////////////////
@ seq depends on !has_llseek @
identifier fops0.fops;
identifier sr ~= "seq_read";
@@
struct file_operations fops = {
...  .read = sr, ...
+.llseek = seq_lseek, /* we have seq_read */
};

// use default_llseek if there is a readdir
///////////////////////////////////////////
@ fops1 depends on !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier readdir_e;
@@
// any other fop is used that changes pos
struct file_operations fops = {
... .readdir = readdir_e, ...
+.llseek = default_llseek, /* readdir is present */
};

// use default_llseek if at least one of read/write touches f_pos
/////////////////////////////////////////////////////////////////
@ fops2 depends on !fops1 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read.read_f;
@@
// read fops use offset
struct file_operations fops = {
... .read = read_f, ...
+.llseek = default_llseek, /* read accesses f_pos */
};

@ fops3 depends on !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier write.write_f;
@@
// write fops use offset
struct file_operations fops = {
... .write = write_f, ...
+	.llseek = default_llseek, /* write accesses f_pos */
};

// Use noop_llseek if neither read nor write accesses f_pos
///////////////////////////////////////////////////////////

@ fops4 depends on !fops1 && !fops2 && !fops3 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read_no_fpos.read_f;
identifier write_no_fpos.write_f;
@@
// write fops use offset
struct file_operations fops = {
...
 .write = write_f,
 .read = read_f,
...
+.llseek = noop_llseek, /* read and write both use no f_pos */
};

@ depends on has_write && !has_read && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier write_no_fpos.write_f;
@@
struct file_operations fops = {
... .write = write_f, ...
+.llseek = noop_llseek, /* write uses no f_pos */
};

@ depends on has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
identifier read_no_fpos.read_f;
@@
struct file_operations fops = {
... .read = read_f, ...
+.llseek = noop_llseek, /* read uses no f_pos */
};

@ depends on !has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
identifier fops0.fops;
@@
struct file_operations fops = {
...
+.llseek = noop_llseek, /* no read or write fn */
};
===== End semantic patch =====

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Julia Lawall <julia@diku.dk>
Cc: Christoph Hellwig <hch@infradead.org>
2010-10-15 15:53:27 +02:00
Mauro Carvalho Chehab 8613e4c287 Input: add support for large scancodes
Several devices use a high number of bits for scancodes. One important
group is the Remote Controllers. Some new protocols like RC-6 define a
scancode space of 64 bits.

The current EVIO[CS]GKEYCODE ioctls allow replace the scancode/keycode
translation tables, but it is limited to up to 32 bits for scancode.

Also, if userspace wants to clean the existing table, replacing it by
a new one, it needs to run a loop calling the ioctls over the entire
sparse scancode space.

To solve those problems, this patch extends the ioctls to allow drivers
handle scancodes up to 32 bytes long (the length could be extended in
the future should such need arise) and allow userspace to query and set
scancode to keycode mappings not only by scancode but also by index.

Compatibility code were also added to handle the old format of
EVIO[CS]GKEYCODE ioctls.

Folded fixes by:
- Dan Carpenter: locking fixes for the original implementation
- Jarod Wilson: fix crash when setting keycode and wiring up get/set
                handlers in original implementation.
- Dmitry Torokhov: rework to consolidate old and new scancode handling,
                   provide options to act either by index or scancode.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Jarod Wilson <jarod@redhat.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-09-09 22:00:50 -07:00
Dmitry Torokhov 144c0f8833 Input: fix a few typos
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-09-05 12:15:14 -07:00
Henrik Rydberg ba4d695a90 Input: MT - initialize slots to unused
For MT slots, the ABS_MT_TRACKING_ID determines whether a slot is in use,
but currently leaves initialization up to the drivers. This patch sets the
slot state to unused upon creation.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-08-28 21:39:43 -07:00
Daniel Mack d31b2865a4 Input: dynamically allocate ABS information
As all callers are now changed to only use the input_abs_*() access
helpers, switching over to dynamically allocated ABS information is
easy. This reduces size of struct input_dev from 3152 to 1640 on
64 bit architectures.

Signed-off-by: Daniel Mack <daniel@caiaq.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-08-02 20:30:04 -07:00
Daniel Mack 987a6c0298 Input: switch to input_abs_*() access functions
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: Daniel Mack <daniel@caiaq.de>
Cc: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-08-02 20:29:56 -07:00
Dmitry Torokhov 20da92de8e Input: change input handlers to use bool when possible
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-07-15 23:52:33 -07:00
Henrik Rydberg 40d007e7df Input: introduce MT event slots
With the rapidly increasing number of intelligent multi-contact and
multi-user devices, the need to send digested, filtered information
from a set of different sources within the same device is imminent.
This patch adds the concept of slots to the MT protocol. The slots
enumerate a set of identified sources, such that all MT events
can be passed independently and selectively per identified source.

The protocol works like this: Instead of sending a SYN_MT_REPORT
event immediately after the contact data, one sends an ABS_MT_SLOT
event immediately before the contact data. The input core will only
emit events for slots with modified MT events. It is assumed that
the same slot is used for the duration of an initiated contact.

Acked-by: Ping Cheng <pingc@wacom.com>
Acked-by: Chase Douglas <chase.douglas@canonical.com>
Acked-by: Rafi Rubin <rafi@seas.upenn.edu>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-07-15 23:52:03 -07:00
Dmitry Torokhov fd6cf3dddf Input: fix signedness warning in input_set_keycode()
The dev->getkeycode() method expects unsigned argument.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-07-14 01:23:51 -07:00
Oliver Neukum 866d7d7b4a Input: release pressed keys when resuming device
As the kernel has no way to know whether a key was released
while the system was asleep, keys need to be reported released
as the system is resumed, lest autorepeat set in.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-07-03 13:13:23 -07:00
Linus Torvalds 00eef7bd01 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: wacom - switch mode upon system resume
  Revert "Input: wacom - merge out and in prox events"
  Input: matrix_keypad - allow platform to disable key autorepeat
  Input: ALPS - add signature for HP Pavilion dm3 laptops
  Input: i8042 - spelling fix
  Input: sparse-keymap - implement safer freeing of the keymap
  Input: update the status of the Multitouch X driver project
  Input: clarify the no-finger event in multitouch protocol
  Input: bcm5974 - retract efi-broken suspend_resume
  Input: sparse-keymap - free the right keymap on error
2010-04-15 11:49:55 -07:00
Tejun Heo 5a0e3ad6af 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>
2010-03-30 22:02:32 +09:00
Dmitry Torokhov 2e2e3b96d9 Input: sparse-keymap - implement safer freeing of the keymap
Allow calling sparse_keymap_free() before unregistering input device
whithout risk of racing with EVIOCGETKEYCODE and EVIOCSETKEYCODE.
This makes life of drivers writers easier.

Acked-by: Yong Wang <yong.y.wang@intel.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-03-21 23:00:51 -07:00
Arnd Bergmann 2f2177c8da Input: remove BKL, fix input_open_file() locking
Holding the BKL in input_open_file seems pointless because it does not
protect against updates of input_table, and all open functions from the
underlying drivers have proper mutex locking.

This makes input_open_file take the input_mutex when accessing
the table and no lock when calling into the lower function.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-03-09 22:05:57 -08:00
Dmitry Torokhov 58b939959d Input: scancode in get/set_keycodes should be unsigned
The HID layer has some scan codes of the form 0xffbc0000 for logitech
devices which do not work if scancode is typed as signed int, so we need
to switch to unsigned it instead. While at it keycode being signed does
not make much sense either.

Acked-by: Márton Németh <nm127@freemail.hu>
Acked-by: Matthew Garrett <mjg@redhat.com>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-03-08 23:19:15 -08:00
Dmitry Torokhov 35858adbfc Merge branch 'next' into for-linus 2010-02-28 23:55:20 -08:00
Dmitry Torokhov 0b7024ac4d Input: add match() method to input hanlders
Get rid of blacklist in input handler structure and instead allow
handlers to define their own match() method to perform fine-grained
filtering of supported devices.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-02-04 00:25:19 -08:00
Dmitry Torokhov ef7995f4e4 Input: implement input filters
Sometimes it is desirable to suppress certain events from reaching
input handlers and thus user space. One such example is Mac mouse
button emulation code which catches certain key presses and converts
them into button clicks as if they were emitted by a virtual mouse.
The original key press events should be completely suppressed,
otherwise user space will be confused, and while keyboard driver
does it on its own evdev is blissfully unaware of this arrangement.

This patch adds notion of 'filter' to the standard input handlers,
which may flag event as filtered thus preventing it from reaching
other input handlers. Filters don't (nor will they ever) have a
notion of priority relative to each other, input core will run all
of them first and any one of them may mark event as filtered.

This patch is inspired by similar patch by Matthew Garret but the
implementation and intended usage are quite different.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-01-30 01:47:41 -08:00
Henrik Rydberg cb6ecf6f7a Input: add the ABS_MT_PRESSURE event
For pressure-based multi-touch devices, a direct way to send sensor
intensity data per finger is needed. This patch adds the ABS_MT_PRESSURE
event to the MT protocol.

Requested-by: Yoonyoung Shim <jy0922.shim@samsung.com>
Requested-by: Mika Kuoppala <mika.kuoppala@nokia.com>
Requested-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-01-28 22:32:45 -08:00
Dmitry Torokhov 7755726fe9 Merge commit 'v2.6.33-rc5' into next 2010-01-21 23:55:25 -08:00
Dmitry Torokhov 15e184afa8 Input: add compat support for sysfs and /proc capabilities output
Input core displays capabilities bitmasks in form of one or more longs printed
in hex form and separated by spaces. Unfortunately it does not work well
for 32-bit applications running on 64-bit kernels since applications expect
that number is "worth" only 32 bits when kernel advances by 64 bits.

Fix that by ensuring that output produced for compat tasks uses 32-bit units.

Reported-and-tested-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-01-12 09:30:24 -08:00
Dmitry Torokhov 92a3a58788 Input: cleanse capabilities bits before registering device
To avoid showing garbage in capability bits, zero out bitmasks absent
from dev->evbit in case driver inadvertently leaves some garbage there.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-01-06 00:27:29 -08:00
Dmitry Torokhov 4f93df4085 Input: automatically reset KEY_RESERVED bit for all input devices
KEY_RESERVED is not supposed to be reported to userspace but rather to
mark unused entries in keymaps.

Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2010-01-06 00:26:20 -08:00
Dmitry Torokhov df2d4637b0 Input: document use of input_event() function
Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2009-12-11 23:48:49 -08:00
Dmitry Torokhov 467832032c Merge commit 'v2.6.32' into next 2009-12-02 23:38:13 -08:00
Dmitry Torokhov 66d2a5952e Input: keyboard - fix lack of locking when traversing handler->h_list
Keyboard handler should not attempt to traverse handler->h_list on
its own, without any locking, otherwise it races with registering
and unregistering of input handles which leads to crashes.

Introduce input_handler_for_each_handle() helper that allows safely
iterate over all handles attached to a particular handler and switch
keyboard handler to use it.

Reported-by: Jim Paradis <jparadis@redhat.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2009-12-01 21:57:48 -08:00
Dmitry Torokhov 3cc9635179 Input: force LED reset on resume
We should be sending EV_LED event down to drivers upon resume even in cases
when in-kernel state of the LED is off since device could come up with some
leds turned on.

Reported-and-tested-by: Mikko Vinni <mmvinni@yahoo.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2009-11-12 23:20:35 -08:00
Dmitry Torokhov 7a53c7f56b Merge commit 'v2.6.32-rc5' into for-linus 2009-11-02 22:10:07 -08:00
Linus Torvalds be8db0b843 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: hp_sdc_rtc - fix test in hp_sdc_rtc_read_rt()
  Input: atkbd - consolidate force release quirks for volume keys
  Input: logips2pp - model 73 is actually TrackMan FX
  Input: i8042 - add Sony Vaio VGN-FZ240E to the nomux list
  Input: fix locking issue in /proc/bus/input/ handlers
  Input: atkbd - postpone restoring LED/repeat rate at resume
  Input: atkbd - restore resetting LED state at startup
  Input: i8042 - make pnp_data_busted variable boolean instead of int
  Input: synaptics - add another Protege M300 to rate blacklist
2009-10-22 08:27:12 +09:00
Dmitry Torokhov 1572ca2a84 Input: fix locking issue in /proc/bus/input/ handlers
input_devices_seq_start() uses mutex_lock_interruptible() to acquire
the input_mutex, but doesn't properly handle the situation when the
call fails (for example due to interrupt). Instead of returning NULL
(which indicates that there is no more data) we should return
ERR_PTR()-encoded error.

We also need explicit flag indicating whether input_mutex was acquired
since input_devices_seq_stop() is called whether input_devices_seq_start()
was successful or not.

The same applies to input_handlers_seq_start().

Reported-by: iceberg <strakh@ispras.ru>
Reviewed-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2009-10-14 00:36:33 -07:00
Alexey Dobriyan a99bbaf5ee headers: remove sched.h from poll.h
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-04 15:05:10 -07:00
Andrew Morton 1c4115e595 drivers/input/input.c: fix CONFIG_PM=n warning
drivers/input/input.c:1277: warning: 'input_dev_reset' defined but not used

Acked-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-10-01 16:11:11 -07:00
Linus Torvalds 0dd52d0df0 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: add driver for Atmel AT42QT2160 Sensor Chip
  Input: max7359 - use threaded IRQs
  Input: add driver for Maxim MAX7359 key switch controller
  Input: add driver for ADP5588 QWERTY I2C Keypad
  Input: add touchscreen driver for MELFAS MCS-5000 controller
  Input: add driver for OpenCores Keyboard Controller
  Input: dm355evm_keys - remove dm355evm_keys_hardirq
  Input: synaptics_i2c - switch to using __cancel_delayed_work()
  Input: ad7879 - add support for AD7889
  Input: atkbd - rely on input core to restore state on resume
  Input: add generic suspend and resume for input devices
  Input: libps2 - additional locking for i8042 ports
2009-09-23 15:39:36 -07:00
Kay Sievers e454cea20b Driver-Core: extend devnode callbacks to provide permissions
This allows subsytems to provide devtmpfs with non-default permissions
for the device node. Instead of the default mode of 0600, null, zero,
random, urandom, full, tty, ptmx now have a mode of 0666, which allows
non-privileged processes to access standard device nodes in case no
other userspace process applies the expected permissions.

This also fixes a wrong assignment in pktcdvd and a checkpatch.pl complain.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-19 12:50:38 -07:00
Dmitry Torokhov ffd0db9719 Input: add generic suspend and resume for input devices
Automatically turn off leds and sound effects as part of suspend
process and restore led state, sounds and repeat rate at resume.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2009-09-17 23:23:58 -07:00
David Brownell a4dbd6740d driver model: constify attribute groups
Let attribute group vectors be declared "const".  We'd
like to let most attribute metadata live in read-only
sections... this is a start.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-09-15 09:50:47 -07:00
Kay Sievers aa5ed63e96 Driver Core: input: add nodename for input drivers
This adds support to the input core to report the proper device name to
userspace for their devices.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Jan Blunck <jblunck@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2009-06-15 21:30:26 -07:00
Henrik Rydberg df391e0eda Input: multitouch - add tracking ID to the protocol
There are a few multi-touch devices that support finger tracking
well in hardware, Stantum being the prime example. By exposing the
tracking ID in the MT protocol, evdev bandwidth and cpu usage in
user space can be reduced.

This patch adds the ABS_MT_TRACKING_ID to the MT protocol.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Tested-by: Stéphane Chatty <chatty@enac.fr>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2009-05-23 09:53:18 -07:00
Henrik Rydberg 5e5ee686e3 Input: add detailed multi-touch finger data report protocol
In order to utilize the full power of the new multi-touch devices, a
way to report detailed finger data to user space is needed. This patch
adds a multi-touch (MT) protocol which allows drivers to report details
for an arbitrary number of fingers.

The driver sends a SYN_MT_REPORT event via the input_mt_sync() function
when a complete finger has been reported.

In order to stay compatible with existing applications, the data
reported in a finger packet must not be recognized as single-touch
events. In addition, all finger data must bypass input filtering,
since subsequent events of the same type refer to different fingers.

A set of ABS_MT events with the desired properties are defined. The
events are divided into categories, to allow for partial implementation.
The minimum set consists of ABS_MT_TOUCH_MAJOR, ABS_MT_POSITION_X and
ABS_MT_POSITION_Y, which allows for multiple fingers to be tracked.
If the device supports it, the ABS_MT_WIDTH_MAJOR may be used to provide
the size of the approaching finger. Anisotropy and direction may be
specified with ABS_MT_TOUCH_MINOR, ABS_MT_WIDTH_MINOR and
ABS_MT_ORIENTATION. Devices with more granular information may specify
general shapes as blobs, i.e., as a sequence of rectangular shapes
grouped together by a ABS_MT_BLOB_ID. Finally, the ABS_MT_TOOL_TYPE
may be used to specify whether the touching tool is a finger or a pen.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2009-04-28 09:36:24 -07:00
Henrik Rydberg 61994a61bc Input: allow certain EV_ABS events to bypass all filtering
With the upcoming multi-touch interface as an example, there is
a need to make certain that all reported events actually get passed
to the event handler. This patch equips the input core with the
ability to bypass all filtering for certain EV_ABS events.

Signed-off-by: Henrik Rydberg <rydberg@euromail.se>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2009-04-28 09:36:16 -07:00
Dmitry Torokhov 0c387ec88a Merge branch 'next' into for-linus 2009-04-16 08:51:52 -07:00
Arjan van de Ven b79e83bdd9 Input: remove unnecessary synchronize_rcu() call
There is no need to issue serialize_rcu() after adding a new handle
to the list of handles associated with the device because new events
will "see" the new handle in the list immediately. Remove it so we
can boot a little bit faster.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2009-04-11 17:09:14 -07:00
Dmitry Torokhov ba28f22e7c Merge branch 'next' into for-linus 2009-04-08 00:00:33 -07:00
Alexey Dobriyan 99b7623380 proc 2/2: remove struct proc_dir_entry::owner
Setting ->owner as done currently (pde->owner = THIS_MODULE) is racy
as correctly noted at bug #12454. Someone can lookup entry with NULL
->owner, thus not pinning enything, and release it later resulting
in module refcount underflow.

We can keep ->owner and supply it at registration time like ->proc_fops
and ->data.

But this leaves ->owner as easy-manipulative field (just one C assignment)
and somebody will forget to unpin previous/pin current module when
switching ->owner. ->proc_fops is declared as "const" which should give
some thoughts.

->read_proc/->write_proc were just fixed to not require ->owner for
protection.

rmmod'ed directories will be empty and return "." and ".." -- no harm.
And directories with tricky enough readdir and lookup shouldn't be modular.
We definitely don't want such modular code.

Removing ->owner will also make PDE smaller.

So, let's nuke it.

Kudos to Jeff Layton for reminding about this, let's say, oversight.

http://bugzilla.kernel.org/show_bug.cgi?id=12454

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
2009-03-31 01:14:44 +04:00
Dmitry Torokhov fa88661224 Input: fix polling of /proc/bus/input/devices
Tested-by: Alessio Sangalli <alesan@manoweb.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2009-03-08 16:34:55 -07:00
Johannes Berg e7b5c1ef4d Input: stop autorepeat timer on key release
Whenever you press and then release a key, the CPU wakes up
three times:
 * press
 * release
 * autorepeat timer exactly 250ms after press

The autorepeat timer has nothing to do, obviously, since you already
have released the key, so stop it on key release.

[dtor@mail.ru: This changes autorepeat behavior a bit since we now stop
 autorepeat even if key that is being released is not the one that is
 being auto-repeated, but I believe the new behavior is better.]

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2009-01-29 23:43:21 -08:00
Kay Sievers a6c2490f01 Input: struct device - replace bus_id with dev_name(), dev_set_name()
Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2008-10-30 09:29:05 -04:00
Dmitry Torokhov 908cf4b925 Merge master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6 into next 2008-07-21 00:55:14 -04:00
Dmitry Torokhov c981228281 Input: don't reset sync flag when ignoring event
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2008-06-30 09:35:18 -04:00
Jonathan Corbet 2edbf8537e Input: cdev lock_kernel() pushdown
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
2008-06-20 14:05:47 -06:00
Denis V. Lunev c7705f3449 drivers: use non-racy method for proc entries creation (2)
Use proc_create()/proc_create_data() to make sure that ->proc_fops and ->data
be setup before gluing PDE to main tree.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Peter Osterlund <petero2@telia.com>
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Cc: Dmitry Torokhov <dtor@mail.ru>
Cc: Neil Brown <neilb@suse.de>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Cc: Alessandro Zummo <a.zummo@towertech.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29 08:06:22 -07:00
Alexey Dobriyan 9c37066d88 proc: remove proc_bus
Remove proc_bus export and variable itself. Using pathnames works fine
and is slightly more understandable and greppable.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-04-29 08:06:18 -07:00
Jan Engelhardt cec69c376b Input: constify function pointer tables (seq_operations)
Signed-off-by: Jan Engelhardt <jengelh@computergmbh.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2008-01-31 00:43:32 -05:00
Dmitry Torokhov 0c1efd3653 Input: remove cdev from input_dev structure
Cdev field was obsolete and provided only for backward compatibility
since conversion of input core from class devices to regular devices.
It is time to remove it.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2008-01-21 01:11:08 -05:00
Dmitry Torokhov f4f37c8ec7 Input: Add proper locking when changing device's keymap
Take dev->event_lock to make sure that we don't race with input_event() and
also force key up event when removing a key from keymap table.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2008-01-21 01:11:06 -05:00
Richard Purdie ed2fa4dd41 Input: pass EV_PWR events to event handlers
input_handle_event() used to pass EV_PWR events to event handlers
but no longer does so in 2.6.23. Modules to trigger power management
events based on input power events exist but rely on the EV_PWR events
being passed to the input event handlers.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2008-01-03 10:46:21 -05:00
Dmitry Baryshkov 22d1c398e8 Input: Handle EV_PWR type of input caps in input_set_capability.
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-12-14 01:21:03 -05:00
Jiri Slaby 7b19ada2ed get rid of input BIT* duplicate defines
get rid of input BIT* duplicate defines

use newly global defined macros for input layer. Also remove includes of
input.h from non-input sources only for BIT macro definiton. Define the
macro temporarily in local manner, all those local definitons will be
removed further in this patchset (to not break bisecting).
BIT macro will be globally defined (1<<x)

Signed-off-by: Jiri Slaby <jirislaby@gmail.com>
Cc: <dtor@mail.ru>
Acked-by: Jiri Kosina <jkosina@suse.cz>
Cc: <lenb@kernel.org>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Cc: <perex@suse.cz>
Acked-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Cc: <vernux@us.ibm.com>
Cc: <malattia@linux.it>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-19 11:53:42 -07:00
Dmitry Torokhov 82ba56c273 Input: use full RCU API
RT guys alerted me to the fact that in their tree spinlocks
are preemptible and it is better to use full RCU API
(rcu_read_lock()/rcu_read_unlock()) to be safe.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-10-13 15:46:55 -04:00
Dmitry Torokhov b981d8b3f5 Merge master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:

	drivers/macintosh/adbhid.c
2007-10-12 21:27:47 -04:00
Kay Sievers 7eff2e7a8b Driver core: change add_uevent_var to use a struct
This changes the uevent buffer functions to use a struct instead of a
long list of parameters. It does no longer require the caller to do the
proper buffer termination and size accounting, which is currently wrong
in some places. It fixes a known bug where parts of the uevent
environment are overwritten because of wrong index calculations.

Many thanks to Mathieu Desnoyers for finding bugs and improving the
error handling.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Cc: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-10-12 14:51:01 -07:00
Dmitry Torokhov 8006479c9b Input: implement proper locking in input core
Also add some kerneldoc documentation to input.h

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-08-30 00:22:11 -04:00
Pavel Emelianov ad5d972cda Input: switch to using seq_list_xxx helpers
This is essentially just a renaming of the existing functions
as copies of seq_list_start() and seq_list_next() already existed
in the input.c.

Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-07-18 00:38:32 -04:00
Dmitry Torokhov 9657d75c5f Input: convert from class devices to standard devices
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-07-10 00:35:17 -04:00
Randy Dunlap e63340ae6b header cleaning: don't include smp_lock.h when not used
Remove includes of <linux/smp_lock.h> where it is not used/needed.
Suggested by Al Viro.

Builds cleanly on x86_64, i386, alpha, ia64, powerpc, sparc,
sparc64, and arm (all 59 defconfigs).

Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-05-08 11:15:07 -07:00
Dmitry Torokhov 534565f254 Input: add input_set_capability() helper
Add input_set_capability() helper used to indicate that an input
device supports a certain event without need to manipulate bitmaps
directly.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-04-25 00:53:18 -04:00
Dmitry Torokhov 88a447a030 Input: prepare to switching to struct device
In preparation to switching to struct device and class device
going away provide an alias to allow drivers that create devices
to use either input_dev->cdev.dev or input_dev->dev.parent to
put them into sysfs tree. The former will go away once conversion
to struct device is complete.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-04-12 01:34:47 -04:00
Dmitry Torokhov 5b2a08262a Input: rework handle creation code
- consolidate code for binding handlers to a device
 - return error codes from handlers connect() methods back to input
   core and log failures

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-04-12 01:29:46 -04:00
Dmitry Torokhov 54f9e36cb8 Input: simplify input_free_device()
Now that sysfs attributes that were marked for deletion can't access
their devices we do not need to set name, phys and uniq to NULL.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-03-16 00:57:25 -04:00
Marvin Raaijmakers c8e4c77277 Input: add getkeycode and setkeycode methods
Allow drivers to implement their own get and set keycode methods. This
will allow drivers to change their keymaps without allocating huge
tables covering entire range of possible scancodes.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-03-14 22:50:42 -04:00
Dmitry Torokhov cb9def4dff Input: let driver core create class device attribute groups
Rely on device core to create attribute groups for input devices
instead of open-coding it.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-03-07 23:20:26 -05:00
Dmitry Torokhov 15e03ae811 Input: export 'uniq' in /proc/bus/input/devices
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-03-07 23:20:17 -05:00
Dmitry Torokhov 1efa770f8e Input: do not lock device when showing name, phys and uniq
Now that sysfs attributes return -ENODEV once driver requests their
removal we do not need to handle scenario when data is deleted from
under our feet and can simplify the code.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2007-02-18 01:40:37 -05:00
Tim Schmielau cd354f1ae7 [PATCH] remove many unneeded #includes of sched.h
After Al Viro (finally) succeeded in removing the sched.h #include in module.h
recently, it makes sense again to remove other superfluous sched.h includes.
There are quite a lot of files which include it but don't actually need
anything defined in there.  Presumably these includes were once needed for
macros that used to live in sched.h, but moved to other header files in the
course of cleaning it up.

To ease the pain, this time I did not fiddle with any header files and only
removed #includes from .c-files, which tend to cause less trouble.

Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
configs in arch/arm/configs on arm.  I also checked that no new warnings were
introduced by the patch (actually, some warnings are removed that were emitted
by unnecessarily included header files).

Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-14 08:09:54 -08:00
Arjan van de Ven 2b8693c061 [PATCH] mark struct file_operations const 3
Many struct file_operations in the kernel can be "const".  Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data.  In addition it'll catch accidental writes at compile time to
these shared resources.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12 09:48:45 -08:00
Dmitry Torokhov 1447190e39 Input: add comments to input_{allocate|free}_device()
Hopefully this will stop people from using input_free_device()
incorrectly.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-11-02 23:26:55 -05:00
Dmitry Torokhov 4263cf0fac Input: make input_register_handler() return error codes
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-09-14 01:32:39 -04:00
Dmitry Torokhov 68c2a1607c Input: remove cruft that was needed for transition to sysfs
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-09-14 01:32:28 -04:00
Dmitry Torokhov 655816e498 Input: fix input module refcounting
Now that input_free_device is basically an alias for input_put_device
we need to acquire a reference to input module right when we allocate
device because input_dev_release releases reference to input module
unconditionally.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-09-14 01:32:14 -04:00
Dmitry Torokhov 66e6611883 Input: constify input core
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-09-14 01:31:59 -04:00
Dmitry Torokhov 6d2750c167 Input: send key up events at disconnect
Emit key up events for all pressed keys/buttons when disconnecting
an input device. Cures "stuck" enter key effect when unloading
keyboard module.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-09-10 21:56:06 -04:00
Anssi Hannula 509ca1a938 Input: implement new force feedback interface
Implement a new force feedback interface, in which all non-driver-specific
operations are separated to a common module. This includes handling effect
type validations, locking, etc.

The effects are now file descriptor specific instead of the previous strange
half-process half-fd specific behaviour. The effect memory of devices is not
emptied if the root user opens and closes the device while another user is
using effects. This is a minor change and most likely no force feedback
aware programs are affected by this negatively.

Otherwise the userspace interface is left unaltered.

Signed-off-by: Anssi Hannula <anssi.hannula@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-07-19 01:40:22 -04:00
Dmitry Torokhov b6d786dbe6 Input: add missing handler->start() call
The start() method need to be called every time we create
a new handle. This includes not only registering new devices
but also when registering new handlers.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-07-19 01:08:51 -04:00
Andrew Morton a2b2ed2ce2 Input: fix list iteration in input_release_device()
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-07-15 01:17:38 -04:00
Dmitry Torokhov 0e739d2876 Input: introduce input_inject_event() function
Create input_inject_event() function which is to be used by input
handlers as opposed to input_event() which is reserved for drivers
implementing input devices. The difference is that if device is
"grabbed" by some process input_inject_event() will ignore events
unless sent from the handle that is currently owns the device.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-07-06 00:22:43 -04:00
Dmitry Torokhov c7e8dc6ee6 Input: add start() method to input handlers
The new start() method is called immediately after connect() and also
when "grabbed" device is released by its owner. This will allow input
handlers to re-synchronize state of once-grabbed device with the rest
of devices.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-07-06 00:21:03 -04:00
Dmitry Torokhov e9c8862f19 Input: remove accept method from input_dev
This method used to enforce exclusive access to iforce devices,
but presenlty there are no known users of this method.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-07-06 00:20:47 -04:00
Dmitry Torokhov e7374e4800 Input: fix resetting name, phys and uniq when unregistering device
It should be done before calling class_device_unregister() because
it will destroy the device and free memory if there are no other
references to the device.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-06-27 14:05:06 -07:00
Dmitry Torokhov ca56fe07f4 Input: rearrange exports
New style is to mark symbol as exported right after its definition.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-06-26 01:49:21 -04:00
Dmitry Torokhov 1e0afb288e Input: fix formatting to better follow CodingStyle
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-06-26 01:48:47 -04:00
Dmitry Torokhov f60d2b111c Input: reset name, phys and uniq when unregistering
Name, phys and uniq are quite often constant strings in moules implementing
particular input device. If a module unregisters input device and then gets
unloaded, the device could still be present in memory (pinned via sysfs),
but aforementioned members would point to some random memory. Set them all
to NULL when unregistering so sysfs handlers won't try dereferencing them.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2006-06-26 01:48:36 -04:00