Add input subsystem to kernel-api docbook.
Enhance some function and parameter comments.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
The keyboard is connected via GPIOs to the processor, and scanned
using a column sample register. The hardware provides no debouncing
mechanism, so the state of the keys is read KBDSCAN_STABLE_COUNT
times before being reported to the input layer.
The status of the keys needs to be polled because there is no
interrupt hooked to the lines. A workqueue is used for this.
Signed-off-by: Nicolas Bellido Y Ortega <ml@acolin.be>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Perform actual driver registration right in serio_register_driver()
instead of offloading it to kseriod and return proper error code to
callers if driver registration fails.
Note that driver <-> port matching is still done by kseriod to
speed up boot process since probing for PS/2 mice and keyboards
is pretty slow.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Pass the work_struct pointer to the work function rather than context data.
The work function can use container_of() to work out the data.
For the cases where the container of the work_struct may go away the moment the
pending bit is cleared, it is made possible to defer the release of the
structure by deferring the clearing of the pending bit.
To make this work, an extra flag is introduced into the management side of the
work_struct. This governs auto-release of the structure upon execution.
Ordinarily, the work queue executor would release the work_struct for further
scheduling or deallocation by clearing the pending bit prior to jumping to the
work function. This means that, unless the driver makes some guarantee itself
that the work_struct won't go away, the work function may not access anything
else in the work_struct or its container lest they be deallocated.. This is a
problem if the auxiliary data is taken away (as done by the last patch).
However, if the pending bit is *not* cleared before jumping to the work
function, then the work function *may* access the work_struct and its container
with no problems. But then the work function must itself release the
work_struct by calling work_release().
In most cases, automatic release is fine, so this is the default. Special
initiators exist for the non-auto-release case (ending in _NAR).
Signed-Off-By: David Howells <dhowells@redhat.com>
I moved to a different town and my old snail-mail address is invalid
now. Also, there's no need at all to have any address like that in
the sources, so remove it completely.
Signed-off-by: Jan-Benedict Glaw <jbglaw@lug-owl.de>
MUX error handling has a workaround for KBCs that get confused which
port data came from and signal MUXERR while data is actually good.
Unfortunately this workaround hurts with KBCs that signal timeouts
as 0xfc (spec says that only 0xfd, 0xfe and 0xff are alowed with
MUXERR) since it causes endless attempts to rescan i8042 serio
ports. The solution is to treat 0xfc as timeout (0xfe).
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
In mousedev the BTN_LEFT and BTN_FORWARD were mapped to mouse button 0,
causing that the user space program cannot distinguish between them through
/dev/input/mice. All mice have BTN_LEFT, but not all have BTN_MIDDLE (e.g.
Clevo D410J laptop). Mapping BTN_FORWARD to mouse button 2 makes the
BTN_FORWARD button useful on this laptop.
Signed-off-by: Marton Nemeth <nm127@freemail.hu>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
psmouse_show_int_attr() and psmouse_set_int_attr() were accessing
unsigned int fields as unsigned long, which gave garbage on x86_64.
Signed-off-by: Sergey Vlasov <vsu@altlinux.ru>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Also use kzalloc instead of kcalloc since we are allocating single object.
Signed-off-by: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Remove call to i8042_interrupt() from i8042_aux_write(). According
to Vojtech it may cause problems with older controllers if it is
called right after real interrupt. Also it is not needed anymore
since we register IRQs early and not waiting for serio ports to
be opened.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This adds another DMI detected touchscreen. It is exactly the same
driver as the existing ones, but this allows it to be detected on the
Hitachi Flora-IE 55mi tablet. The original Midori drivers are "abeo
antiquus". This should allow new life for these machines.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Initialize serio_bus structure at compile time instead of at runtime
in serio_init().
Signed-off-by: Marton Nemeth <nm127@freemail.hu>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Now with the ide.h mess sorted out, most of these boards
don't need their own directory. Move the headers out, and
update the driver paths.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
The Zaurii drivers were partially fixed up for the IRQ register
changes, but unfortunately missed some bits, resulting in build
errors. Fix these.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
In preparation for moving check_signature, change these users from asm/io.h
to linux/io.h
Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Many users seems to be annoyed by this warning so kill the message
and implement a counter exported as a sysfs attribute so we still
know what is going on. Make atkbd use attribute groups while we are
at it.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Enable HIL configuration options on HP300
Signed-off-by: Kars de Jong <jongk@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
of passing regs around manually through all ~1800 interrupt handlers in the
Linux kernel.
The regs pointer is used in few places, but it potentially costs both stack
space and code to pass it around. On the FRV arch, removing the regs parameter
from all the genirq function results in a 20% speed up of the IRQ exit path
(ie: from leaving timer_interrupt() to leaving do_IRQ()).
Where appropriate, an arch may override the generic storage facility and do
something different with the variable. On FRV, for instance, the address is
maintained in GR28 at all times inside the kernel as part of general exception
handling.
Having looked over the code, it appears that the parameter may be handed down
through up to twenty or so layers of functions. Consider a USB character
device attached to a USB hub, attached to a USB controller that posts its
interrupts through a cascaded auxiliary interrupt controller. A character
device driver may want to pass regs to the sysrq handler through the input
layer which adds another few layers of parameter passing.
I've build this code with allyesconfig for x86_64 and i386. I've runtested the
main part of the code on FRV and i386, though I can't test most of the drivers.
I've also done partial conversion for powerpc and MIPS - these at least compile
with minimal configurations.
This will affect all archs. Mostly the changes should be relatively easy.
Take do_IRQ(), store the regs pointer at the beginning, saving the old one:
struct pt_regs *old_regs = set_irq_regs(regs);
And put the old one back at the end:
set_irq_regs(old_regs);
Don't pass regs through to generic_handle_irq() or __do_IRQ().
In timer_interrupt(), this sort of change will be necessary:
- update_process_times(user_mode(regs));
- profile_tick(CPU_PROFILING, regs);
+ update_process_times(user_mode(get_irq_regs()));
+ profile_tick(CPU_PROFILING);
I'd like to move update_process_times()'s use of get_irq_regs() into itself,
except that i386, alone of the archs, uses something other than user_mode().
Some notes on the interrupt handling in the drivers:
(*) input_dev() is now gone entirely. The regs pointer is no longer stored in
the input_dev struct.
(*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
something different depending on whether it's been supplied with a regs
pointer or not.
(*) Various IRQ handler function pointers have been moved to type
irq_handler_t.
Signed-Off-By: David Howells <dhowells@redhat.com>
(cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (35 commits)
Input: wistron - add support for Acer TravelMate 2424NWXCi
Input: wistron - fix setting up special buttons
Input: add KEY_BLUETOOTH and KEY_WLAN definitions
Input: add new BUS_VIRTUAL bus type
Input: add driver for stowaway serial keyboards
Input: make input_register_handler() return error codes
Input: remove cruft that was needed for transition to sysfs
Input: fix input module refcounting
Input: constify input core
Input: libps2 - rearrange exports
Input: atkbd - support Microsoft Natural Elite Pro keyboards
Input: i8042 - disable MUX mode on Toshiba Equium A110
Input: i8042 - get rid of polling timer
Input: send key up events at disconnect
Input: constify psmouse driver
Input: i8042 - add Amoi to the MUX blacklist
Input: logips2pp - add sugnature 56 (Cordless MouseMan Wheel), cleanup
Input: add driver for Touchwin serial touchscreens
Input: add driver for Touchright serial touchscreens
Input: add driver for Penmount serial touchscreens
...
The key mappings are the same as the older Acer TravelMate 240.
Signed-off-by: Ashutosh Naik <ashutosh.naik@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
If either wifi or bluetooth button has been detected, the code
would break off the loop. But there are laptops that have both
types of buttons, so the loop has to continue checking.
Signed-off-by: Reiner Herrmann <reiner@reiner-h.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
ppc can boot one single binary on prep, chrp and pmac boards. ppc64 can
boot one single binary on pseries and G5 boards. pmac has no legacy io,
probing for PC style legacy hardware (or accessing the legacy io area
regulary) may lead to a hard crash:
* add check for parport_pc, exit on pmac. 32bit chrp has no
->check_legacy_ioport, the probe is always called. 64bit chrp has
check_legacy_ioport, check for a "parallel" node
* add check for isapnp, only PReP boards may have real ISA slots. 32bit
PReP will have no ->check_legacy_ioport, the probe is always called.
* update code in i8042_platform_init. Run ->check_legacy_ioport first,
always call request_region. No functional change. Remove whitespace
before i8042_reset init.
Signed-off-by: Olaf Hering <olaf@aepfle.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Adam Belay <ambx1@neo.rr.com>
Cc: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch adds support for keypad driver running on different TI
OMAP(http://www.ti.com/omap) processor based boards like OSK, H2, H3, H4,
Persuas and Nokia 770.
Signed-off-by: Komal Shah <komal_shah802003@yahoo.com>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This adds some simple PM stubs and the basic APM interfaces,
primarily for use by hp6xx, where the existing userland
expects it.
Signed-off-by: Andriy Skulysh <askulysh@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Add support for stowaway and stowaway compatible (eg. dicota inutPDA)
serial keyboards. Reported to work on palm zire71 and palm tungsten T3.
Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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>
Microsoft Natural Elite Pro keyboard produces unisual response to
the GET ID command - single byte 0xaa (normally keyboards produce
2-byte response). Fail GET ID command so atkbd gets a change to
do alternate probe.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
When keyboard controller is in active multiplexing mode ALPS touchpad
may get detected twice. Since the box does not have external PS/2
ports simply disabling MUX mode is safe solution.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Remove polling timer that was used to detect keybord/mice hotplug and
register both IRQs right away instead of waiting for a driver to
attach to a port.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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>
This was introduced in commit 3d0f0fa0cb554541e10cb8cb84104e4b10828468:
bounds checking is performed against period[32] while indexing delay[4].
Spotted by Coverity, CID 1376.
Signed-off-by: Florin Malita <fmalita@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
ALPS touchpad on Amoi laptops (Amoi is a vendor in China) is not
detected when keyboard controller is in MUX mode, add to blacklist.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
- Use the touch status bit rather than the pressure bits to
distinguish a BTN_TOUCH event. Non-pressure-sensitive touchscreens
always report full pressure
- Report ABS_PRESSURE information only if the touchscreen supports it
Signed-off-by: Shaun Jackman <sjackman@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Fix 10-byte protocol checksum calculation and do not discard packet early
unless it is missing lead in byte.
Signed-off-by: Shaun Jackman <sjackman@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Trackpoint driver was not sending the magic knock sequence upon resume
causing incorrect device behavior after resuming from disk.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
MX300 does not have an EXTRA_BTN - it is a simple wheel mouse with
an additional task-switcher button, which is reported as side button
(and not task button).
Signed-off-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
The userspace interface of the force feedback part is changed and
documentation in uinput.h is updated accordingly. MODULE_VERSION
is also incremented to reflect the revision.
Signed-off-by: Anssi Hannula <anssi.hannula@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Consolidate core implementing memoryless devices in one module; added
support for gain and envelopes and periodic => rumble conversion.
Signed-off-by: Anssi Hannula <anssi.hannula@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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>
Move fixp-arith.h from drivers/usb/input to drivers/input, as the part of
force feedback support that requires trigonometric functions is being moved
there.
Signed-off-by: Anssi Hannula <anssi.hannula@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This will allow building input core module from several files
which is needed for the reworked force feedback support.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Although the Spaceball 4000FLX Lefty is already supported by the
spaceball driver, it does not register properly due to SPACEBALL_MAX_ID
being set too low. Increment SPACEBALL_MAX_ID such that the 4000FLX Lefty
is properly recognized.
Signed-off-by: Nick Martin <nim+linux@nimlabs.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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>
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>
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>
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>
The PS/2 code has a natural device order and there is a one level recursion in
this device order in terms of the cmd_mutex; annotate this explicit recursion
as ok.
Has no effect on non-lockdep kernels.
Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Cc: Dmitry Torokhov <dtor_core@ameritech.net>
Cc: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
drivers/input/serio/i8042-sparcio.h:91: error: '__mod_of_device_table' aliased to undefined symbol 'i8042_match'
Cc: Dmitry Torokhov <dtor_core@ameritech.net>
DESC
sparc: resource warning fix
EDESC
From: Andrew Morton <akpm@osdl.org>
sound/sparc/amd7930.c: In function 'amd7930_attach_common':
sound/sparc/amd7930.c:1040: warning: format '%08lx' expects type 'long unsigned int', but argument 5 has type 'resource_size_t'
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Patch from Thomas Gleixner
From: Thomas Gleixner <tglx@linutronix.de>
Include the generic header file instead of the ARM specific one.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Randy Dunlap
Nicolas Bellido
Akinobu Mita
Dmitry Torokhov
David Howells
Jan-Benedict Glaw
Nicolas Pitre
Marton Nemeth
Sergey Vlasov
Jeff Garzik
Andrew Morton
Greg Chandler
Paul Mundt
Linus Torvalds
Al Viro
Russell King
Matthew Wilcox
Jiri Kosina
Geert Uytterhoeven
Matt LaPlante
Ashutosh Naik
Reiner Herrmann
Olaf Hering
Komal Shah
Andriy Skulysh
Marek Vasut
Helge Deller
Pozsar Balazs
Florin Malita
Cjacker Huang
Rick Koch
Shaun Jackman
Roberto Castagnola
Anssi Hannula
Randy Dunlap
Nick Martin
Przemek Iskra
Arjan van de Ven
Thomas Gleixner
Jörn Engel