Commit Graph

6 Commits

Author SHA1 Message Date
Philip Rakity 341deefe8f Input: tsc2007 - make sure that X plate resistance is specified
Abort driver initialization if X plate resistance was not specified in
platform data as it will cause pressure to be always calculated as 0,
and making userspace ignore touch coordinates.

Signed-off-by: Philip Rakity <prakity@marvell.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-10-11 20:56:41 -07:00
Thierry Reding 891e376b1e Input: tsc2007 - add X, Y and Z fuzz factors to platform data
These new platform-specific values can be used to set the fuzz parameter
passed to the input_set_abs_params() function for the ABS_X, ABS_Y and
ABS_PRESSURE axes.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-05-17 09:38:53 -07:00
Thierry Reding 1af38eac8c Input: tsc2007 - add poll_period parameter to platform data
This new parameter allows the polling frequency to be configured while
keeping the default of once every millisecond.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-05-17 09:38:49 -07:00
Thierry Reding 2d137c7ed2 Input: tsc2007 - add poll_delay parameter to platform data
Depending on the quality of the touch panel, the time for the X-, X+, Y-
and Y+ inputs to settle may vary. The poll_delay parameter can be used
to override the default of 1 millisecond.

Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Kwangwoo Lee <kwangwoo.lee@gmail.com>
Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-05-17 09:38:43 -07:00
Thierry Reding 84005eb5ea Input: tsc2007 - add max_rt parameter to platform data
Finger touch events or very quick stylus events on low-quality panels
can cause the tsc2007 to read bogus values. Looking at oscilloscope
snapshots, this seems to be caused by the touch event disappearing
during the measurements. These bogus values result in misclicks, where
the X and Y values deviate from the real position.

Most of these misclicks can be filtered out by setting a low enough
threshold for the maximum resistance (which is loosely the inverse of
the pressure) allowed to consider a set of values valid. Since this
behaviour is largely dependent on the type and quality of the panel,
this commit introduces the max_rt parameter. The default value is kept
at MAX_12BIT.

Signed-off-by: Thierry Reding <thierry.reding@avionic-design.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2011-05-17 09:38:39 -07:00
Kwangwoo Lee 50b6f1f4a4 Input: add tsc2007 based touchscreen driver
This drive has been tested on ARM9 based SoC - MV86XX.

Signed-off-by: Kwangwoo Lee <kwangwoo.lee@gmail.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
2008-12-20 05:00:43 -05:00