linux-toradex.git/drivers/hid/wacom.h, branch v5.8-rc2

HID: wacom: generic: Treat serial number and related fields as unsigned

2019-11-06T20:37:29+00:00

The HID descriptors for most Wacom devices oddly declare the serial
number and other related fields as signed integers. When these numbers
are ingested by the HID subsystem, they are automatically sign-extended
into 32-bit integers. We treat the fields as unsigned elsewhere in the
kernel and userspace, however, so this sign-extension causes problems.
In particular, the sign-extended tool ID sent to userspace as ABS_MISC
does not properly match unsigned IDs used by xf86-input-wacom and libwacom.

We introduce a function 'wacom_s32tou' that can undo the automatic sign
extension performed by 'hid_snto32'. We call this function when processing
the serial number and related fields to ensure that we are dealing with
and reporting the unsigned form. We opt to use this method rather than
adding a descriptor fixup in 'wacom_hid_usage_quirk' since it should be
more robust in the face of future devices.

Ref: https://github.com/linuxwacom/input-wacom/issues/134
Fixes: f85c9dc678 ("HID: wacom: generic: Support tool ID and additional tool types")
CC:  # v4.10+
Signed-off-by: Jason Gerecke 
Reviewed-by: Aaron Armstrong Skomra 
Signed-off-by: Jiri Kosina

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152

2019-05-30T18:26:32+00:00

Based on 1 normalized pattern(s):

  this program is free software you can redistribute it and or modify
  it under the terms of the gnu general public license as published by
  the free software foundation either version 2 of the license or at
  your option any later version

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 3029 file(s).

Signed-off-by: Thomas Gleixner 
Reviewed-by: Allison Randal 
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de
Signed-off-by: Greg Kroah-Hartman

HID: wacom: Add ability to provide explicit battery status info

2017-05-05T19:46:10+00:00

At the moment, our driver relies on 'wacom_battery_get_property()' to
determine the most likely battery state (e.g charging, discharging, or
full) based on the information available. It is not always possible
for the function to properly determine this, however. For instance,
whenever an AES pen leaves proximity the battery state becomes
indeterminite. This commit adds the ability to provide it with explict
state information if desired. Whenever explicit state is not required
(the majority of circumstances), WACOM_POWER_SUPPLY_STATUS_AUTO can
be used in its place.

Three uses of explicit battery status are added: two wireless disconnect
paths and the AES case mentioned above.

Signed-off-by: Jason Gerecke 
Reviewed-by: Ping Cheng 
Signed-off-by: Jiri Kosina

HID: wacom: generic: add mode change touch key

2017-03-06T13:07:13+00:00

Wacom Cintiq Pro added a touch key to switch the tablet between
display and opaque mode. This patch informs the change by removing
the old devices and creating new ones with proper properties.

Signed-off-by: Benjamin Tissoires 
Signed-off-by: Ping Cheng 
Tested-by: Aaron Armstrong Skomra 
Signed-off-by: Jiri Kosina

Merge branches 'for-4.10/upstream-fixes', 'for-4.11/intel-ish', 'for-4.11/mayflash', 'for-4.11/microsoft', 'for-4.11/rmi', 'for-4.11/upstream' and 'for-4.11/wacom' into for-linus

2017-02-20T14:01:57+00:00

HID: wacom: generic: support LEDs

2017-01-26T20:46:45+00:00

Add support for the LEDs around the mode switch to the generic code path in
support of the second generation Intuos Pro.

Signed-off-by: Aaron Skomra 
Reviewed-by: Ping Cheng 
Signed-off-by: Jiri Kosina

HID: wacom: generic: add vendor defined touch

2017-01-26T20:46:44+00:00

Add vendor defined touch to support the second generation Intuos Pro.
Previously all generic Wacom devices used true HID to report their touch.

Signed-off-by: Aaron Skomra 
Reviewed-by: Ping Cheng 
Signed-off-by: Jiri Kosina

HID: wacom: do not attempt to switch mode while in probe

2017-01-23T10:00:13+00:00

The Intuos Pro seems to not like when we set the features right after
being powered up. Instead of waiting during probe, we can schedule the
switch mode and LED control in a deferred worker so that we don't have the
5 secs of delay from USB when the device is not accessible.

The USB timeout delays were really a pain because if you happen to unplug
the tablet while it is still waiting, you are just adding 5 second timeouts
to the USB stack. Which means that a new plug of the same tablet will also
gets delayed, and will also attempt to access the hardware while in
.probe(). So the tablet doesn't appear in the dmesg, the user unplug/replug
it to make it appearing... and so on so forth.

Really, this is for the best :)

Signed-off-by: Benjamin Tissoires 
Acked-by: Jason Gerecke 
Signed-off-by: Jiri Kosina

HID: remove use of DRIVER_LICENSE

2017-01-06T13:32:14+00:00

Local "#define DRIVER_LICENSE" obfuscates which license is used
in MODULE_LICENSE().  "fgrep -R MODULE_LICENSE" is more informative
when the string is hard coded in MODULE_LICENSE.

Signed-off-by: Grant Grundler 
Reviewed-by: Benjamin Tissoires 
Signed-off-by: Jiri Kosina

HID: wacom: generic: Don't return a value for wacom_wac_event

2016-12-09T12:26:24+00:00

It is unnecessary to return a value since nothing is expecting a
value from it.

Signed-off-by: Ping Cheng 
Reviewed-By: Jason Gerecke 
Signed-off-by: Jiri Kosina