Commit graph

94 commits

Author SHA1 Message Date
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