Check return value from call to devm_kmemdup() in order to prevent a NULL
pointer dereference.
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This way, upower can add a simple udev rule to decide whether or not
it should use the internal unifying support or just the generic kernel
one.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The Solar Keyboard uses a different feature to report the battery level.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
CAPACITY LEVEL allows to forward rough information on the battery mileage.
HID++ 2.0 devices will either report percentage or levels, so better
forwarding this information to the user space.
The M325 supports only 2 levels: 'Full' and 'Critical'. With mileage,
it will report either 90% or 5%, which might confuse users. With this
change the battery will either report "Full" or "Critical".
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The power_supply term for the percentage is capacity. Capacity level
can be given when non accurate mileage is provided by the device, so
better stick to the terms used in power_supply.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
When ONLINE isn't set, upower should ignore the battery capacity,
so there is no need to overload it with some random values.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
When a device reconnects, there is a high chance its power supply has
been changed (for a battery replacement for instance). Just forward
the battery state here.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Or the device just answers a valid feature '0'.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The creation of the power_supply should not be in a HID++ 2.0 specific
function.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Better forwarding the device name, manufacturer and serial to upower.
Note that serial is still empty, it will be filled in a later patch
in this series.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Battery events are reported through HID++, so we need to be sure
the report ID is the HID++ one.
Without this, we might receive keyboard events that looks just like
battery events with wrong data and which will confuse user space.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Looks like all users don't care about a disconnect.
Simplify the various variant_connect() and put the connect state check
at the beginning.
For delayed input devices, make sure we go through all other connect
values (protocol, battery) before bailing out.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
hidpp->name can't be null.
Only HID++ 2.0 and above device supports the query.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Unifying devices are different from others because they can probed
while not connected. So we need to talk to the receiver to get some
extra information like the device name and the serial.
Instead of having conditionals while attempting to read the device name
from HID++ 2.0, have a special init path for them.
Store the retrieved serial in hdev->uniq.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Do not pollute the quirks bits field which is public API
with elements that are queried from the device.
Move the 2 battery capabilities into the new field.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Unless they are connected through unifying, they don't support it,
so remove one error in the logs.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Without a scope defined, UPower assumes that the battery provides
power to the computer it's connected to, like a laptop battery or a UPS.
Tested-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Now that we can create battery power_supply sources, it's better to enable
the connect_event callback unconditionally.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
If the 0x1000 Unified Battery Level Status feature exists, expose the battery
level.
The main drawback is that while a device is plugged in its battery level is 0.
To avoid exposing that as 0% charge we make up a number based on the charging
status.
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
hidpp_ff_init() and hidpp_ff_deinit() are not used outside of
hid-logitech-hidpp.c, so let's make them static.
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This patch implements force feedback support for the Logitech
G920 Driving Force Racing Wheel. It is a generic implementation
of feature 0x8123 of the Logitech HID++ protocol and should be
usable for any future devices that implement this feature.
This patch should be applied after the basic G920 support patch
by Simon Wood:
http://www.spinics.net/lists/linux-input/msg42174.html
The driving supports everything that is supported by the G920
firmware:
FF_CONSTANT
FF_PERIODIC
FF_SINE
FF_SQUARE
FF_SAW_UP
FF_SAW_DOWN
FF_TRIANGLE
FF_SPRING
FF_DAMPER
FF_AUTOCENTER
FF_GAIN
and for version 2 firmware also:
FF_FRICTION
FF_INERTIA
FF_RAMP
Both envelopes and replay values are supported as well, but some
problems may occur when using firmware release 1. There is also a
small residual clockwise damper in the wheel when using the first
firmware release. All problems are fixed in the soon te be released
firmware version 2.
The default spring is disabled by permanently placing a spring
force in the wheel. This spring is also used as the autocenter
spring.
Note: The wheel _DOES_NOT_ auto switch to Logitech/HID mode (it is stuck
in XBox since the xpad changes where not included). Michal has an
alternative approach documented here (and the changes should be submitted
upstream to usb_modeswitch project):
===
Create a file named "046d:c261" in "/etc/usb_modeswitch.d" with the
following content:
DefaultVendor=046d
DefaultProduct=c261
MessageEndpoint=01
ResponseEndpoint=01
TargetClass=0x03
MessageContent="0f00010142"
Then run "usb_modeswitch -c /etc/modeswitch.d/046d:c291" as root and
watch the magic happen:)
===
[jkosina@suse.cz: added information about mode switching from Simon]
[jkosina@suse.cz: fixed a few stylistic issues pointed out by Simon]
[jkosina@suse.cz: fix merge conflict due to to_hid_device() changes]
Signed-off-by: Edwin Velds <e.velds@gmail.com>
Tested-by: Elias Vanderstuyft <elias.vds@gmail.com>
Tested-by: Simon Wood <simon@mungewell.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
to_hid_device() macro is defined in both hid-lg4ff.c and
hid-logitech-hidpp.c. So I move it to include/linux/hid.h.
Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Ensure that the G920 is not given the default deadzones.
Signed-off-by: Simon Wood <simon@mungewell.org>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The G920 can adjust the amount of 'turn' it permits, this patch adds
a sysfs file 'range' to control this.
Signed-off-by: Simon Wood <simon@mungewell.org>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This patch adds basic support for the Logitech G920 wheel when in HID
mode. This wheel 'speaks' the HID++ protocol, and therefor is driven
with hid-logitech-hidpp.
At this stage the driver only shows that it can communicate with the
wheel by outputting the name discovered over HID++.
The normal HID functions work to give input functionality using
joystick/event interface.
Note: in 'hidpp_probe()' we have to start the hardware to get packets
flowing, the same might apply in future for other devices which don't
use the unifying protocol.
Signed-off-by: Simon Wood <simon@mungewell.org>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Patch add support for the 'very long' HID++ packets, which are
64 bytes in length.
Signed-off-by: Simon Wood <simon@mungewell.org>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
When configuring input device via input_configured callback we may
encounter errors (for example input_mt_init_slots() may fail). Instead
of continuing with half-initialized input device let's allow driver
indicate failures.
Signed-off-by: Jaikumar Ganesh <jaikumarg@android.com>
Signed-off-by: Arve Hjønnevåg <arve@android.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Acked-by: Nikolai Kondrashov <Nikolai.Kondrashov@redhat.com>
Acked-by: Andrew Duggan <aduggan@synaptics.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The Logitech K400 keyboard has an embedded touchpad which is seen as a
mouse from the OS point of view. There is a hardware shortcut to disable
tap-to-click but the setting is not remembered accross reset, annoying
some users.
We can toggle this feature from the host by using the feature 0x6010:
Touchpad FW items
Reported-by: BALATON Zoltan <balaton@eik.bme.hu>
Tested-by: BALATON Zoltan <balaton@eik.bme.hu>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
HIDPP_QUIRK_DELAYED_INIT means two things currently:
- we want to delay the initialization process
- we do not want hid to create an input device based on the report
descriptor.
This should actually be 2 different quirks so we can have special connect
events while still having HID creating the input for us.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
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>
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>
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>
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>
If a disconnect occurs while getting the actual name of the device
(which can take several HID transactions), the name of the device will
be the hid name, provided by the Unifying Receiver.
This means that in some cases, the user space will see a different
name that what it usually sees when there is no disconnect.
We should store the name of the device in the struct hidpp. That way,
if a disconnect occurs while we are accessing the name,
hidpp_connect_event() can fail, and the input node is not created.
The input node will be created only if we have a connection which
lasts long enough to retrieve all the requested information:
name, protocol, and specific configuration.
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Tested-by: Peter Wu <peter@lekensteyn.nl>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Current names are reported as "K750", "M705", and it can be misleading
for the users when they look at their input device list.
Prefixing the names with "Logitech " makes things better.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Add a return to avoid a fall-through. Introduced in commit
57ac86cf52 ("HID: logitech-hidpp: add
support of the first Logitech Wireless Touchpad").
Signed-off-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Devices speaking HID++ 2.0 report a different error code (0xff). Detect
these errors too to avoid 5 second delays when the device reports an
error. Caught by... well, a bug in the QEMU emulation of this receiver.
Renamed fap to rap for HID++ 1.0 errors because it is more logical,
it has no functional difference.
Signed-off-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Current names are reported as "K750", "M705", and it can be misleading
for the users when they look at their input device list.
Prefixing the names with "Logitech " makes things better.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
If wtp_connect() fails, that means most of the time that the device has
been disconnected. Subsequent attempts to contact the device will fail
too, so it's simpler to bail out earlier.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Reviewed-by: Peter Wu <peter@lekensteyn.nl>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Previously wtp_raw_event would be called through
hidpp_raw_hidpp_event (for the touchpad report) and hidpp_raw_event
(for the mouse report).
This patch removes one calling surface, making a clearer distinction
between "generic HID++ processing" (matching internal reports) and
device-specific event processing.
Suggested-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Malicious USB devices can send bogus reports smaller than the expected
buffer size. Ensure that the length for WTP reports is valid to avoid
reading out of bounds.
Signed-off-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Balance a hid_device_io_start() call with hid_device_io_stop() in the
error path. This avoids processing of HID reports when the probe fails
which possibly leads to invalid memory access in hid_device_probe() as
report_enum->report_id_hash might already be freed via
hid_close_report().
hid_set_drvdata() is called before wtp_allocate, be consistent and clear
drvdata too on the error path of wtp_allocate.
Signed-off-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The HID response has a limited size. Do not trust the value returned by
hardware, check that it really fits in the message.
Signed-off-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
hidpp_devicenametype_get_device_name() may return a negative value on
protocol errors (for example, when the device is powered off).
Explicitly check this condition to avoid a long-running loop.
(0 cannot be returned as __name_length - index > 0, but check for it
anyway as it would otherwise result in an infinite loop.)
Signed-off-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
We do not make any use of the actual name length get through
hidpp_get_device_name(). Original patch by Benjamin Tissoires, this
patch also replaces a (now) unnecessary goto by return NULL.
Signed-off-by: Peter Wu <peter@lekensteyn.nl>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
- remove the constant '1'
- when the device is not connected, the protocol error
HIDPP_ERROR_RESOURCE_ERROR is raised. We should not warn the user about
it because it is somewhat expected as an answer when we check if the
device is connected.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Reported by Dan Carpenter:
drivers/hid/hid-logitech-hidpp.c:359 hidpp_root_get_protocol_version() warn: should this return really be negated?
drivers/hid/hid-logitech-hidpp.c:398 hidpp_devicenametype_get_count() warn: should this return really be negated?
drivers/hid/hid-logitech-hidpp.c:417 hidpp_devicenametype_get_device_name() warn: should this return really be negated?
drivers/hid/hid-logitech-hidpp.c:524 hidpp_touchpad_get_raw_info() warn: should this return really be negated?
The problem lies in hidpp_send_message_sync() which can return 2 types of
errors depending of their sign. Adding a comment there to clarify what is
happening.
To solve that, print an error in case of a protocol problem, and raise
-EPROTO instead.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Shift the allocation down a few lines to avoid a memory leak and also
add a check for allocation failure.
Fixes: 2f31c52529 ('HID: Introduce hidpp, a module to handle Logitech hid++ devices')
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>
The TK820 presents both a keyboard and a touchpad on the same
physical (and logical device). Use the generic hid-input
processing for the keyboard part. The keyboard input device is created
when the receiver is plugged in, so no events are missed on connect.
When the device actaully connects, we can set it to use the raw
multitouch reporting to have a consistent user experience accross
all Logitech touchpads.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Andrew de los Reyes <adlr@chromium.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This touchpad differs from the T650 in several ways:
- the resolution is not correctly returned by the device
- it presents physical buttons, so the button flag in the raw touch report
is not filled.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Andrew de los Reyes <adlr@chromium.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
All the bits are now in place to add the support of the
Touchpad T650.
The creation/population of the input device is delayed until
the device is ready.
The T650 uses the special HID++ reporting protocol, so activate
this on connect.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Andrew de los Reyes <adlr@chromium.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Now that the receiver forwards the connect/disconnect events, we can
know when the device is available to communicate with us.
When it is ready, we can for instance retrieve its full name, which
guarantee that we always have the same name for the DJ device (the DJ
name is somewhat shorter than the HID++ name).
This mechanism is mandatory for the touchpads line, which has the
min/max information stored in the device. This information can only
be retrieved when the device is connected. So we can not populate
the input device until we are sure that the device is connected.
This patch creates a new input device for such devices. However,
this input is not bound to hid directly, so the various drivers
which wants to use it are required to process completely the
incoming reports in .raw_event().
Note that the patch in itself just adds the bits for the next
ones, and this feature is disabled by default.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Andrew de los Reyes <adlr@chromium.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
The names of the DJ devices are stored in the receiver. These names
can be retrieved through a HID++ command. However, the protocol says
that you have to ask the receiver for that, not the device iteself.
Introduce a special case in the DJ handling where a device can request
its unifying name, and when such a name is given, forward it also to
the corresponding device.
On the HID++ side, the receiver talks only HID++ 1.0, so we need to
implement this part of the protocol in the module.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Andrew de los Reyes <adlr@chromium.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Devices connected through the Logitech Wireless Receiver are HID++ devices.
We can handle them here to benefit from this new module and activate
enhaced support of the various wireless touchpad or mice with touch
sensors on them.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Andrew de los Reyes <adlr@chromium.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Logitech devices use a vendor protocol to communicate various
information with the device. This protocol is called HID++,
and an exerpt can be found here:
https://drive.google.com/folderview?id=0BxbRzx7vEV7eWmgwazJ3NUFfQ28&usp=shar
The main difficulty which is related to this protocol is that
it is a synchronous protocol using the input reports.
So when we want to get some information from the device, we need
to wait for a matching input report.
This driver introduce this capabilities to be able to support
the multitouch mode of the Logitech Wireless Touchpad T651
(the bluetooth one). The multitouch data is available directly
from the mouse input reports, and we just need to query the device
on connect about its caracteristics.
HID++ and the touchpad features has a specific reporting mode
which uses pure HID++ reports, but Logitech told us not to use
it for this specific device. During QA, they detected that
some bluetooth input reports where lost, and so the only supported
mode is the pointer mode.
Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Tested-by: Andrew de los Reyes <adlr@chromium.org>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
