linux-toradex.git/drivers/input/tablet/wacom_sys.c, branch v3.10.78 Linux kernel for Apalis and Colibri modules Input: wacom - make sure touch_max is set for touch devices 2014-03-31T16:58:14+00:00 Ping Cheng pinglinux@gmail.com 2013-11-26T02:43:45+00:00 c16d2409ed27ae4fabcf608e48725e1618e76064 commit 1d0d6df02750b4a6f466768cbfbf860e24f4c8d4 upstream. Old single touch Tablet PCs do not have touch_max set at wacom_features. Since touch device at lease supports one finger, assign touch_max to 1 when touch usage is defined in its HID Descriptor and touch_max is not pre-defined. Tested-by: Jason Gerecke <killertofu@gmail.com> Signed-off-by: Ping Cheng <pingc@wacom.com> Reviewed-by: Chris Bagwell <chris@cnpbagwell.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Josh Boyer <jwboyer@fedoraproject.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 
commit 1d0d6df02750b4a6f466768cbfbf860e24f4c8d4 upstream.

Old single touch Tablet PCs do not have touch_max set at
wacom_features. Since touch device at lease supports one
finger, assign touch_max to 1 when touch usage is defined
in its HID Descriptor and touch_max is not pre-defined.

Tested-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Ping Cheng <pingc@wacom.com>
Reviewed-by: Chris Bagwell <chris@cnpbagwell.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Josh Boyer <jwboyer@fedoraproject.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Input: wacom - fix wacom_set_report retry logic 2013-01-24T03:38:52+00:00 Chris Bagwell chris@cnpbagwell.com 2013-01-24T03:37:34+00:00 9937c026820baabd1e908a9c1e6bdc846293000a Logic sets a value and then reads it back to make sure it worked and retries write on failures. Since read and write share a buffer, it needs to be set back up before writing though. Issue is not seen a lot because 1) it doesn't need to retry for a lot of tablets and 2) a lot of failures that need a retry are from an -ETIMEDOUT and hopefully buffer is not touched in this case. At least one user has shown logs with buffer being modified during -ETIMEDOUT case with linux 3.7 kernel. Signed-off-by: Chris Bagwell <chris@cnpbagwell.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
Logic sets a value and then reads it back to make sure it worked
and retries write on failures.  Since read and write share a buffer,
it needs to be set back up before writing though.

Issue is not seen a lot because 1) it doesn't need to retry for
a lot of tablets and 2) a lot of failures that need a retry are
from an -ETIMEDOUT and hopefully buffer is not touched in this case.

At least one user has shown logs with buffer being modified during
-ETIMEDOUT case with linux 3.7 kernel.

Signed-off-by: Chris Bagwell <chris@cnpbagwell.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: wacom - add support for 2 new multi-touch tablets (0x100 and 0x101) 2012-11-08T17:12:46+00:00 Ping Cheng pinglinux@gmail.com 2012-11-03T19:16:15+00:00 6afdc289c984451a6202a687fe6af727e051a784 This adds support for the two new multi-touch tablets. Signed-off-by: Ping Cheng <pinglinux@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
This adds support for the two new multi-touch tablets.

Signed-off-by: Ping Cheng <pinglinux@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: wacom - clean up device type code 2012-11-08T17:12:29+00:00 Ping Cheng pinglinux@gmail.com 2012-11-03T19:16:13+00:00 3699dd7e16a9f68586a44e1efeb9708359f9c2a6 Use switch instead of if statement to verify device types Signed-off-by: Ping Cheng <pinglinux@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
Use switch instead of if statement to verify device types

Signed-off-by: Ping Cheng <pinglinux@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: wacom - correct bad Cintiq 24HD check 2012-10-30T07:10:29+00:00 Jason Gerecke killertofu@gmail.com 2012-10-30T06:45:30+00:00 b216e12d062d060f2c7b1a49b4b6a6a442cae79c Signed-off-by: Fengguang Wu <fengguang.wu@intel.com> Signed-off-by: Jason Gerecke <killertofu@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: wacom - add touch sensor support for Cintiq 24HD touch 2012-10-25T23:02:36+00:00 Jason Gerecke killertofu@gmail.com 2012-10-21T07:38:04+00:00 b1e4279e4ef5549bf6ebf8f6f17dd26f0af8e8a2 Decode multitouch reports from the touch sensor of the Cintiq 24HD touch. Signed-off-by: Jason Gerecke <killertofu@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
Decode multitouch reports from the touch sensor of the Cintiq 24HD
touch.

Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Input: wacom - handle split-sensor devices with internal hubs 2012-10-25T23:02:36+00:00 Jason Gerecke killertofu@gmail.com 2012-10-21T07:38:03+00:00 aea2bf6a57a9e4596bfad164f986ba10ddc6adf3 Like our other pen-and-touch products, the Cintiq 24HD touch needs data to be shared between its two sensors to facilitate proximity-based palm rejection. Unlike other tablets that report sensor data through separate interfaces of the same USB device, the Cintiq 24HD touch has separate USB devices that are connected to an internal USB hub. This patch makes it possible to designate the USB VID/PID of the other device so that the two may share data. To ensure we don't accidentally link to a sensor from a physically separate device (if several have been plugged in), we limit the search to siblings (i.e., devices directly connected to the same hub). Signed-off-by: Jason Gerecke <killertofu@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> 
Like our other pen-and-touch products, the Cintiq 24HD touch needs data
to be shared between its two sensors to facilitate proximity-based palm
rejection.

Unlike other tablets that report sensor data through separate interfaces
of the same USB device, the Cintiq 24HD touch has separate USB devices
that are connected to an internal USB hub.

This patch makes it possible to designate the USB VID/PID of the other
device so that the two may share data.  To ensure we don't accidentally
link to a sensor from a physically separate device (if several have been
plugged in), we limit the search to siblings (i.e., devices directly
connected to the same hub).

Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Input: wacom - clean up wacom_query_tablet_data 2012-10-05T06:09:32+00:00 Jason Gerecke killertofu@gmail.com 2012-10-04T00:25:35+00:00 fe494bc2f6e47f02a78ec4761117187db40381a6 Rewrites this function to be easier to read and understand. The new function 'wacom_set_device_mode' now handles the grunt work of assembling the proper feature report, sending it to the device, and ensuring the setting "sticks". Signed-off-by: Jason Gerecke <killertofu@gmail.com> Tested-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
Rewrites this function to be easier to read and understand. The new
function 'wacom_set_device_mode' now handles the grunt work of
assembling the proper feature report, sending it to the device,
and ensuring the setting "sticks".

Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Input: wacom - introduce wacom_fix_phy_from_hid 2012-10-05T06:09:31+00:00 Jason Gerecke killertofu@gmail.com 2012-10-04T00:24:32+00:00 115d5e12a7d5fe62076f9dcc728905196162d709 The Cintiq 24HD touch cannot use wacom_set_phy_from_res to determine the physical size of the touch sensor since the pen and touch are on separate USB devices. The physical size is, however, provided in the HID descriptor, just scaled to a unit we don't use. This patch introduces the function wacom_fix_phy_from_hid to let us make use of the unit and exponent data provided by HID to set the [xy]_phy variables to an appropriate value. This function relies on a trimmed-down version of hidinput_calc_abs_res from the hid-input.c. Signed-off-by: Jason Gerecke <killertofu@gmail.com> Tested-by: Ping Cheng <pingc@wacom.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com> 
The Cintiq 24HD touch cannot use wacom_set_phy_from_res to determine
the physical size of the touch sensor since the pen and touch are
on separate USB devices. The physical size is, however, provided in
the HID descriptor, just scaled to a unit we don't use.

This patch introduces the function wacom_fix_phy_from_hid to let
us make use of the unit and exponent data provided by HID to set
the [xy]_phy variables to an appropriate value. This function
relies on a trimmed-down version of hidinput_calc_abs_res from
the hid-input.c.

Signed-off-by: Jason Gerecke <killertofu@gmail.com>
Tested-by: Ping Cheng <pingc@wacom.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Merge branch 'for-linus' to bring in change ensuring that drivers that 2012-07-07T23:07:48+00:00 Dmitry Torokhov dmitry.torokhov@gmail.com 2012-07-07T23:07:48+00:00 3c3416abbe3328c2fae054379894614b0c894069 use threaded IRQs use IRQF_ONESHOT. 
use threaded IRQs use IRQF_ONESHOT.