Use kernel.h macro definition.
Thanks to Julia Lawall for Coccinelle scripting support.
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Adding support for the Microsoft Surface Pro Power Cover.
Signed-off-by: Raimund Roth <raimundmroth@gmail.gom>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Removes Vernier Software & Technology devices from the ldusb
driver and the hid_ignore_list table of the usbhid driver in the
Linux tree. These devices will now be supported via the hidraw
driver.
A user space driver for these devices will be found in the
Go! Software Development Kit from Vernier at
http://www.vernier.com/downloads/software-development-kits/go-sdk/.
These devices are also be supported by the LabQuest2 standalone
interface shown at http://www.vernier.com/products/interfaces/labq2/
and the LoggerPro for Linux software shown at
http://www.vernier.com/downloads/logger-pro-linux/.
Signed-off-by: Dennis O'Brien <dennis.obrien@eqware.net>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The Logitech M560 is a wireless mouse designed for windows 8 which uses
the unifying receiver.
Compared to a standard one, some buttons (the middle one and the
two ones placed on the side) are bound to a key combination
instead of a generating classic "mouse" button events.
The device shows up as a mouse and keyboard combination: when the middle
button is pressed it sends a key (as keyboard) combination, the same
happens for the two side button. The left/right/wheel work as expected
from a mouse. To complicate things further, the middle button sends
different keys combinations between odd and even presses.
In the "even" press it also sends a left click. But the worst thing
is that no event is generated when the middle button is released.
It is possible to re-configure the mouse sending a command (see function
m560_send_config_command()). After this command the mouse sends some
useful data when the buttons are pressed and/or released.
[jkosina@suse.cz: fix build breakage due to leftover from previous
patch version]
Signed-off-by: Goffredo Baroncelli <kreijack@inwind.it>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Rename the function extract() to hid_field_extract(), make it external linkage
to allow the use from other modules.
Suggested-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Goffredo Baroncelli <kreijack@inwind.it>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
There is no sysfs_group_remove() on failure path in lenovo_probe_tpkbd().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
There are too many bangs in this conditional; therefore
remove them while still maintaining the same logic.
Signed-off-by: James C Boyd <jcboyd.dev@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
GCC reports a -Wlogical-not-parentheses warning here; therefore
add parentheses to shut it up and to express our intent more.
Signed-off-by: James C Boyd <jcboyd.dev@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Most of the entries are aligned with TABs, fix those which are not.
Signed-off-by: Antonio Ospite <ao2@ao2.it>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
I received a report from an user of following mouse which needs this quirk:
usb 1-1.6: USB disconnect, device number 58
usb 1-1.6: new low speed USB device number 59 using ehci_hcd
usb 1-1.6: New USB device found, idVendor=04f2, idProduct=1053
usb 1-1.6: New USB device strings: Mfr=1, Product=2, SerialNumber=0
usb 1-1.6: Product: USB Optical Mouse
usb 1-1.6: Manufacturer: PixArt
usb 1-1.6: configuration #1 chosen from 1 choice
input: PixArt USB Optical Mouse as /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.6/1-1.6:1.0/input/input5887
generic-usb 0003:04F2:1053.16FE: input,hidraw2: USB HID v1.11 Mouse [PixArt USB Optical Mouse] on usb-0000:00:1a.0-1.6/input0
The quirk was tested by the reporter and it fixed the frequent disconnections etc.
[jkosina@suse.cz: reorder the position in hid-ids.h]
Signed-off-by: Herton R. Krzesinski <herton@redhat.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
We assumed all touch interfaces report touch data. But, Bamboo
and Intuos non-touch devices report express keys on touch
interface. We need to check touch_max before counting touches.
Reported-by: Tasos Sahanidis <tasos@tasossah.com>
Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
These defines are used like this:
if (test_bit(I2C_HID_STARTED, &ihid->flags))
The intent was to use bits 0, 1, and 2 but because of the extra shifts
we're using bits 1, 2, and 4. It's harmless becuase it's done
consistently but it's not the intent and static checkers will complain.
Fixes: 4a200c3b9a ('HID: i2c-hid: introduce HID over i2c specification implementation')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
These defines are used like this:
if (!(test_bit(RMI_STARTED, &hdata->flags)))
So the intent was to use bits 0, 1 and 2 but because of the extra BIT()
shifts we're actually using 1, 2 and 4. It's harmless because it's done
consistently but static checkers will complain.
Fixes: 9fb6bf02e3 ('HID: rmi: introduce RMI driver for Synaptics touchpads')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Like other KVM switches, the Aten DVI KVM switch needs a quirk to avoid spewing
errors:
[791759.606542] usb 1-5.4: input irq status -75 received
[791759.614537] usb 1-5.4: input irq status -75 received
[791759.622542] usb 1-5.4: input irq status -75 received
Add it.
Signed-off-by: Laura Abbott <labbott@fedoraproject.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Once there were kernel drivers for some of the phidgets devices, and for
those kernel drivers to work the hid system needed exceptions. Now the
kernel drivers are long gone in favour of the user-space drivers.
The user-space drivers support many more phidget devices and uses libusb.
The udev rules set up permissions so that the kernel hid driver can be
unbound from libusb, as it does for many devices not in hid_ignore_list.
http://www.phidgets.com/docs/OS_-_Linux
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
When CONFIG_DEBUG_LOCK_ALLOC is defined, mutex magic is compared and
warned for (l->magic != l), here l is the address of mutex pointer.
In hid-sensor-hub as part of hsdev creation, a per hsdev mutex is
initialized during MFD cell creation. This hsdev, which contains, mutex
is part of platform data for the a cell. But platform_data is copied
in platform_device_add_data() in platform.c. This copy will copy the
whole hsdev structure including mutex. But once copied the magic
will no longer match. So when client driver call
sensor_hub_input_attr_get_raw_value, this will trigger mutex warning.
So to avoid this allocate mutex dynamically. This will be same even
after copy.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Only one of LG_FF flags can be set for a given device.
Signed-off-by: Michal Malý <madcatxster@devoid-pointer.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Allow the driver to continue without sysfs interface. Instead of bailing out
allow the driver to continue in a degraded mode.
Signed-off-by: Michal Malý <madcatxster@devoid-pointer.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Constify those members of lg4ff_device_entry struct whose value is not
supposed to change.
Signed-off-by: Michal Malý <madcatxster@devoid-pointer.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Store pointer to the output HID report struct in the device entry struct.
This eliminates the need to look the HID report struct up every time it is needed.
Signed-off-by: Michal Malý <madcatxster@devoid-pointer.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Protect concurrent access to output HID report with a spinlock. The HID report
structure used to submit commands to wheels is shared amongst all functions that
need to do so and some of these functions can be executed in parallel.
Additionally, lg4ff_play() can be called from interrupt context by ff-memless
module. Locking is necessary to prevent sending bogus data to the wheels.
Signed-off-by: Michal Malý <madcatxster@devoid-pointer.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Stop the hid device from lg4ff. Originally hid-lg was responsible for
stopping of the device.
Signed-off-by: Michal Malý <madcatxster@devoid-pointer.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Make lg4ff_wheel_data a separate structure stored within lg4ff_device_entry.
Adjust the initialization process accordingly.
Signed-off-by: Michal Malý <madcatxster@devoid-pointer.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Check return values from lg[N]ff_init(). hid-lg did not check return values from
the lg[N]_init() functions, possibly trying to work with a device whose
initialization has failed.
Signed-off-by: Michal Malý <madcatxster@devoid-pointer.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Update a warning message for a case where device is incorrectly flagged to be
handled by hid-lg4ff in hid-lg. The original warning message was highly
misleading. This warning can be triggered only if a device is flagged to be
handled by hid-lg4ff in hid-lg but hid-lg4ff lacks support for such device.
Signed-off-by: Michal Malý <madcatxster@devoid-pointer.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Remove unused variable from the "lg4ff_device_entry" struct. This is a leftover
from times where hid_get|set_drvdata() was not available to hid-lg4ff so it had
to keep track of the devices it managed by itself.
Signed-off-by: Michal Malý <madcatxster@devoid-pointer.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Replace DEVICE_ATTR_RW with DEVICE_ATTR to have all internal functions prefixed
with "lg4ff_". All internal functions should be prefixed with just "lg4ff_".
Usage of DEVICE_ATTR_RW breaks this scheme because it expects the functions'
names to match the name of the respective sysfs entry.
This partially reverts "2f1cec3250e38609bf9252db52dbbe61603c04a7"
Signed-off-by: Michal Malý <madcatxster@devoid-pointer.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Remove "hid_" prefix from some functions' names. All internal functions
of hid-lg4ff should be prefixed with just "lg4ff_"
Signed-off-by: Michal Malý <madcatxster@devoid-pointer.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Remove double underscore prefix from numeric types. This code will never be used
outside the kernel so the prefixes are unnecessary.
Signed-off-by: Michal Malý <madcatxster@devoid-pointer.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This reverts commit 3a61e97563.
The Logitech TK820 seems to be affected by a firmware bug which
delays the sending of the keys (pressed, or released, which triggers
a key-repeat) while holding fingers on the touch sensor.
This behavior can be observed while using the mouse emulation mode
if the user moves the finger while typing (highly improbable though).
Holding the finger still while in the mouse emulation mode does
not trigger the key repeat problem.
So better keep things in their previous state to not have to
explain users that the new key-repeat bug they see is a "feature".
Furthermore, I noticed that I disabled the media keys whith
this patch. Sorry, my bad.
I think it is best to revert the patch, in all the current
versions it has been shipped.
Cc: <stable@vger.kernel.org> # v3.19 and above
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
'key' is set but never used in the first loop. So remove the set.
And indent the re-set of pm->last_key properly.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
wait_event_interruptible_timeout() expects a timeout in jiffies so the
numeric constant becomes HZ dependent - put it through msecs_to_jiffies()
to make it HZ independent.
Signed-off-by: Nicholas Mc Guire <hofrat@osadl.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The raphnet.net 4nes4snes and 2nes2snes multi-joystick adapters use a single
HID report descriptor with one report ID per controller. This has the effect
that the inputs of otherwise independent game controllers get packed in one
large joystick device.
With this patch each controller gets its own /dev/input/jsX device, which is
more natural and less confusing than having all inputs going to the same place.
Signed-off-by: Raphael Assenat <raph@raphnet.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Using GPIOs and gpiolib is optional. If the kernel is compiled without GPIO
support the driver should not fail if it finds the interrupt using normal
methods.
However, commit a485923efb ("HID: i2c-hid: Add support for ACPI GPIO
interrupts") did not take into account that acpi_dev_add_driver_gpios()
returns -ENXIO when !CONFIG_GPIOLIB.
Fix this by checking the return value against -ENXIO and 0 and only in that
case fail the probe.
Reported-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Pull HID updates from Jiri Kosina:
- quite a few firmware fixes for RMI driver by Andrew Duggan
- huion and uclogic drivers have been substantially overlaping in
functionality laterly. This redundancy is fixed by hid-huion driver
being merged into hid-uclogic; work done by Benjamin Tissoires and
Nikolai Kondrashov
- i2c-hid now supports ACPI GPIO interrupts; patch from Mika Westerberg
- Some of the quirks, that got separated into individual drivers, have
historically had EXPERT dependency. As HID subsystem matured (as
well as the individual drivers), this made less and less sense. This
dependency is now being removed by patch from Jean Delvare
- Logitech lg4ff driver received a couple of improvements for mode
switching, by Michal Malý
- multitouch driver now supports clickpads, patches by Benjamin
Tissoires and Seth Forshee
- hid-sensor framework received a substantial update; namely support
for Custom and Generic pages is being added; work done by Srinivas
Pandruvada
- wacom driver received substantial update; it now supports
i2c-conntected devices (Mika Westerberg), Bamboo PADs are now
properly supported (Benjamin Tissoires), much improved battery
reporting (Jason Gerecke) and pen proximity cleanups (Ping Cheng)
- small assorted fixes and device ID additions
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid: (68 commits)
HID: sensor: Update document for custom sensor
HID: sensor: Custom and Generic sensor support
HID: debug: fix error handling in hid_debug_events_read()
Input - mt: Fix input_mt_get_slot_by_key
HID: logitech-hidpp: fix error return code
HID: wacom: Add support for Cintiq 13HD Touch
HID: logitech-hidpp: add a module parameter to keep firmware gestures
HID: usbhid: yet another mouse with ALWAYS_POLL
HID: usbhid: more mice with ALWAYS_POLL
HID: wacom: set stylus_in_proximity before checking touch_down
HID: wacom: use wacom_wac_finger_count_touches to set touch_down
HID: wacom: remove hardcoded WACOM_QUIRK_MULTI_INPUT
HID: pidff: effect can't be NULL
HID: add quirk for PIXART OEM mouse used by HP
HID: add HP OEM mouse to quirk ALWAYS_POLL
HID: wacom: ask for a in-prox report when it was missed
HID: hid-sensor-hub: Fix sparse warning
HID: hid-sensor-hub: fix attribute read for logical usage id
HID: plantronics: fix Kconfig default
HID: pidff: support more than one concurrent effect
...
* new API for safe access of power supply function attrs
* devres support for power supply (un)registration
* new drivers / chips
- generic syscon based poweroff driver
- iio & charger driver for da9150
- fuel gauge driver for axp288
- bq27x00: add support for bq27510
- bq2415x: add support for bq24157s
* twl4030-madc-battery: convert to iio consumer
* misc fixes
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=WbZu
-----END PGP SIGNATURE-----
Merge tag 'for-v4.1' of git://git.infradead.org/battery-2.6
Pull power supply and reset changes from Sebastian Reichel:
- new API for safe access of power supply function attrs
- devres support for power supply (un)registration
- new drivers / chips:
- generic syscon based poweroff driver
- iio & charger driver for da9150
- fuel gauge driver for axp288
- bq27x00: add support for bq27510
- bq2415x: add support for bq24157s
- twl4030-madc-battery: convert to iio consumer
- misc fixes
* tag 'for-v4.1' of git://git.infradead.org/battery-2.6: (66 commits)
power: twl4030_madc_battery: Add missing MODULE_ALIAS
power: twl4030-madc-battery: Convert to iio consumer.
dt: power: Add docs for generic SYSCON poweroff driver.
power: reset: Add generic SYSCON register mapped poweroff.
power: max17042_battery: add missed blank
power: max17042_battery: Use reg type instead of chip type
power/reset: at91: big endian fixes for atsama5d3x
power_supply: charger-manager: Fix dereferencing of ERR_PTR
HID: input: Fix NULL pointer dereference when power_supply_register fails
power: constify of_device_id array
power/reset/rmobile-reset.c: Fix !HAS_IOMEM build
power_supply: 88pm860x_charger: Fix possible NULL pointer dereference and use of initialized variable
arm: mach-pxa: Decrement the power supply's device reference counter
mfd: ab8500: Decrement the power supply's device reference counter
power_supply: bq2415x_charger: Decrement the power supply's device reference counter
power_supply: 88pm860x_charger: Decrement the power supply's device reference counter
x86/olpc/xo15/sci: Use newly added power_supply_put API
x86/olpc/xo1/sci: Use newly added power_supply_put API
power_supply: charger-manager: Decrement the power supply's device reference counter
power_supply: Increment power supply use counter when obtaining references
...
HID Sensor Spec defines two usage ids for custom sensors
HID_USAGE_SENSOR_TYPE_OTHER_CUSTOM (0x09, 0xE1)
HID_USAGE_SENSOR_TYPE_OTHER_GENERIC(0x09, 0xE2)
In addition the standard also defines usage ids for custom fields.
The purpose of these sensors is to extend the functionality or provide a way to
obfuscate the data being communicated by a sensor. Without knowing the mapping
between the data and its encapsulated form, it is difficult for an driver to
determine what data is being communicated by the sensor. This allows some
differentiating use cases, where vendor can provide applications. Since these
can't be represented by standard sensor interfaces like IIO, we present these
as fields with
- type (input/output)
- units
- min/max
- get/set value
In addition an dev interface to transfer report events. Details about this
interface is described in /Documentation/hid/hid-sensor.txt. Manufacturers
should not use these ids for any standard sensors, otherwise the the
product/vendor id can be added to black list.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Reviewed-by: Jonathan Cameron <jic23@kernel.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
In the unlikely case of hdev vanishing while hid_debug_events_read() was
sleeping, we can't really break out of the case switch as with other cases,
as on the way out we'll try to remove ourselves from the hdev waitqueue.
Fix this by taking a shortcut exit path and avoiding cleanup that doesn't
make sense in case hdev doesn't exist any more anyway.
Reported-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Return a negative error code on failure.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
{ ... return ret; }
|
ret = 0
)
... when != ret = e1
when != &ret
*if(...)
{
... when != ret = e2
when forall
return ret;
}
// </smpl>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Cintiq 13HD Touch is a new display tablet with pen and 10 finger touches.
Signed-off-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The Logitech T650 used to report 3 fingers swipes to the up as a press on the
Super key. When we switched the touchpad to the raw mode, we also disable such
firmware gesture and some users may rely on it.
Unfortunately, 3 finger swipes are still not supported in most of the Linux
environments, which means that we disabled a feature of the touchpad.
Allow users to revert the raw reporting mode and keep going with the firmware
gestures by providing a new module parameter.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The device exists with two device IDs instead of one as previously
believed.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
During a stress test these mice kept dropping and reappearing
in runlevel 1 as opposed to 5.
Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
In wacom_bpt_pen, we checked touch_down before assigning new
stylus_in_proximity value. This would cause stylus_in_proximity not updated
properly if touch is down before pen is in proximity.
[jkosina@suse.cz: fix if-else style]
Signed-off-by: Ping Cheng <pingc@wacom.com>
Reviewed-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Counting number of touching fingers by wacom_wac_finger_count_touches so we
don't have to count them inside individual routines.
Signed-off-by: Ping Cheng <pingc@wacom.com>
Reviewed-by: Jason Gerecke <jason.gerecke@wacom.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
