Signed-off-by: NAdrian Batzill <agib@gmx.de>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

When userspace sets effect->u.rumble.strong_magnitude to 0x8001 or
larger, ml_combine_effects() would always return strong_magnitude
0xffff.

Problem is that 'gain' is passed in as signed integer. Multiplying
magnitude (__u16) with gain (int) causes magnitude read as signed and
results negative value (with magnitude > 0x8000). This signed integer
is then divided and value, still negative, converted to 32bit unsigned
integer. Finally checking combine overflow min(new+old, 0xffff) gives
out 0xffff.

Fix is to simply change 'gain' to unsigned int.
Signed-off-by: NJussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: NAnssi Hannula <anssi.hannula@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

BTN_TOUCH is not set by the wacom driver which causes it to be handled by the
joydev driver while the resulting device is broken. This causes problems with
applications that try to use a joystick device.

Ubuntu BugLink: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/300143Signed-off-by: NTim Cole <tim.cole@canonical.com>
Signed-off-by: NStefan Bader <stefan.bader@canonical.com>
Acked-by: NTim Gardner <tim.gardner@canonical.com>
Acked-by: NAmit Kucheria <amit.kucheria@canonical.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This patchs adds documentation for the multi-touch protocol to
Documentation/input/.

[randy.dunlap@oracle.com: grammar fixes]
Signed-off-by: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

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: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

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: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This patch adds documentation for the bcm5974 to Documentation/input/.
Signed-off-by: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Add more button and finger data to the debug output.
Signed-off-by: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This patch adds support for the new unibody Macbook, with physically
integrated button and trackpad. Since the integrated button changes
the logic for touch-and-click, a device capability bit mask is now
reported in input_id.version, which can be picked up by user space
via a EVIOCGID call.
Signed-off-by: NHenrik Rydberg <rydberg@euromail.se>
Tested-by: NDavid M. Lary <dmlary@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The integrated button on the new unibody Macbooks presents a need to
report explicit four-finger actions. Evidently, the finger pressing
the button is also touching the trackpad, so in order to fully support
three-finger actions, the driver must be able to report four-finger
actions. This patch adds a new button, BTN_TOOL_QUADTAP, which
achieves this.
Signed-off-by: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The new unibody Macbooks are equipped with an integrated button and
trackpad. The package header of the trackpad interface has changed to
also contain information about the integrated button.  This patch
performs the necessary preparations to allow for the new package
header.
Signed-off-by: NHenrik Rydberg <rydberg@euromail.se>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

CONFIG_DMA_API_DEBUG spotted an instance of appletouch using
an array on the stack as a DMA buffer for certain hardware.
Change it to use a kmalloc()ed buffer instead.
Signed-off-by: NBob Copeland <me@bobcopeland.com>
Reviewed-by: NJohannes Berg <johannes@sipsolutions.net>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This patch fixed a bug that was introduced in kernel 2.6.28 for
TabletPC touch data. The wacom_parse_hid routine in wacom_sys.c
should always return 0 even when usb_control_msg got an error.
Signed-off-by: NPing Cheng <pingc@wacom.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Although we already have entry for ZEPHYR the match is done
on product name whereas B-2130 BIOS has it in board name.
Reported-by: NYuriy Zhuravlev <stalkerg@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This toshiba has a touchpad with trackpoint and 2 sets of left
and right buttons (above and below touchpad).
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

There exist laptops with Elantech touchpads where switching to absolute mode
does not happen, although writing the configuration register succeeds
without error. Reading back the register afterwards reveils that the
absolute mode bit is not set as if masked out by the touchpad firmware.

Always read back register 0x10, make sure that for hardware version 1 the
absolute mode bit is actually set and fail otherwise. This prevents the case
where the touchpad is claimed by the Elantech driver but is nonetheless not
working.
Signed-off-by: NArjan Opmeer <arjan@opmeer.net>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

It seems that Elantech touchpad firmware version 2.34 on the Hercules eCAFÉ
suffers from a problem where bogus coordinates get reported at the beginning
of a touch action. This causes the mouse cursor or the scrolled page to
jump.

Included patch provides a workaround that discards mouse packets that are
likely to contain bogus coordinates. The workaround is activated when we
detect touchpad with fimware version 2.34.
Signed-off-by: NArjan Opmeer <arjan@opmeer.net>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

disable_irq() waits for all running handlers to complete before
returning.  As such, if it's used to disable an interrupt from
that interrupt's handler it will deadlock.  This replaces the
dangerous instances with the _nosync() variant which doesn't have
this problem.
Signed-off-by: NBen Nizette <bn@niasdigital.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

disable_irq() waits for all running handlers to complete before
returning.  As such, if it's used to disable an interrupt from
that interrupt's handler it will deadlock.  This replaces the
dangerous instances with the _nosync() variant which doesn't have
this problem.
Signed-off-by: NBen Nizette <bn@niasdigital.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

disable_irq() waits for all running handlers to complete before
returning.  As such, if it's used to disable an interrupt from
that interrupt's handler it will deadlock.  This replaces the
dangerous instances with the _nosync() variant which doesn't have
this problem.
Signed-off-by: NBen Nizette <bn@niasdigital.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

disable_irq() waits for all running handlers to complete before
returning.  As such, if it's used to disable an interrupt from
that interrupt's handler it will deadlock.  This replaces the
dangerous instances with the _nosync() variant which doesn't have
this problem.
Signed-off-by: NBen Nizette <bn@niasdigital.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The use of disable_irq inside the handler for the interrupt being
disabled has always been dangerous.  disable_irq should wait for that
handler to complete before returning -> deadlock.

For some reason this wasn't actually the case until 3aa551c9 was merged
but since this time, the ads7846 driver has deadlocked the system on
first interrupt.

Convert the driver to use the handler-safe _nosync variant.
Signed-off-by: NBen Nizette <bn@niasdigital.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The loop body was never executed, because the condition is
always false. Convert to for with more obvious condition.
Signed-off-by: NJiri Slaby <jirislaby@gmail.com>
Acked-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

dev is leftover from b0ee0d3e
(Input: pc110pad - use no_pci_devices()).
Signed-off-by: NIlpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This patch removes depreciated IRQF_SAMPLE_RANDOM flags from
ad7877 and ad7879 touchscreen drivers.
Signed-off-by: NMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

PEN_{UP/DOWN} events are expected to be available soon after stopping
TSI auto measurement, but this is found not always be true. Work around
this by adding delay and simulating such an event (according to pen down
status bit).
Signed-off-by: NBin Yang <bin.yang@marvell.com>
Signed-off-by: NEric Miao <eric.miao@marvell.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Bin did a lot of work on this driver, without his help, this driver
will not be possible.
Signed-off-by: NBin Yang <bin.yang@marvell.com>
Signed-off-by: NEric Miao <eric.miao@marvell.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Signed-off-by: NBarry Carroll <baz8080@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The commit 6902c0be that moved
driver registration out of kgameportd thread was incomplete and
did not add the code necessary to actually attach driver to
already registered devices, rectify that.
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Fix this build error when CONFIG_SERIO is not set
hp_sdc_rtc.c:691: undefined reference to `hp_sdc_request_timer_irq'
and so on..

"select should be used with care. select will force
a symbol to a value without visiting the dependencies."
Signed-off-by: NAlexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The input core will add entropy to the pool so this flag is not
needed.
Signed-off-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Noises can be introduced when LCD signals are being driven, some platforms
provide a signal to assist the synchronization of this sampling procedure.
Signed-off-by: NEric Miao <eric.miao@marvell.com>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

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: NDmitry Torokhov <dtor@mail.ru>

There are several DMI tables in the i8042 (keyboard) driver already, but
not one for the i8042.reset option.  This patch adds such an option.

Two users for this table are added as well, the MSI Wind U-100 and the LG
X110.  The MSI Wind also needs to be in the "don't trust the pnp data" for
the touchpad to work on my machine.
Signed-off-by: NArjan van de Ven <arjan@linux.intel.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Some touchpads don't reset right the first time (MSI Wind U-100 for
example).  This patch will retry the reset up to 5 times.

In addition, on x86, we don't fail entire i8042 initialization if
controller reset fails in hope that keyboard port will still be
functional and user will still get a working keyboard. This is
especially important on netbooks.
Signed-off-by: NArjan van de Ven <arjan@linux.intel.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Reported-by: NKenneth Crudup <kenny@panix.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>