Commit Graph

7 Commits

Author SHA1 Message Date
Dmitry Torokhov
4200e831e4 Input: of_touchscreen - switch to using device properties
Let's switch form OF to device properties so that common parsing code could
work not only on device tree but also on ACPI-based platforms.

Reviewed-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-07-11 17:26:45 -07:00
Dmitry Torokhov
517178692c Input: of_touchscreen - fix setting max values on X/Y axis
The binding specification says that "touchscreen-size-x" and "-y" specify
horizontal and vertical resolution of the touchscreen and therefore maximum
absolute coordinates should be reduced by 1 since we are starting with 0.

Reviewed-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-07-11 17:26:37 -07:00
Dmitry Torokhov
f61fd21dea Input: of_touchscreen - always issue warning if axis is not set up
Do issue warning about axis that is present in device tree but not specified
by the driver even in case of multi-touch axis as callers now tell us if they
expect multi-touch data or not.

Reviewed-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-07-11 17:26:13 -07:00
Dmitry Torokhov
7c494375b7 Input: improve parsing OF parameters for touchscreens
When applying touchscreen parameters specified in device tree let's make
sure we keep whatever setup was done by the driver and not reset the
missing values to zero.

Reported-by: Pavel Machek <pavel@ucw.cz>
Tested-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-06-25 14:45:46 -07:00
Maxime Ripard
0a363a3809 Input: of_touchscreen - register multitouch axes
So far, the DT parsing code was only setting up the regular input axes,
completely ignoring their multitouch counter parts.

Fill them with the same parameters than the regular axes.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-03-24 12:00:40 -07:00
Maxime Ripard
3eea8b5d68 Input: of_touchscreen - rework the DT parsing function
The DT parsing function currently duplicates a lot of the code to parse the
touchscreen DT properties. In order to ease further additions to this
parsing routine, rework it slightly to create new helper functions.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-03-24 12:00:39 -07:00
Sebastian Reichel
b98abe52fa Input: add common DT binding for touchscreens
Add common DT binding documentation for touchscreen devices and
implement input_parse_touchscreen_of_params, which parses the common
properties and configures the input device accordingly.

The method currently does not interpret the axis inversion properties,
since there is no matching flag in the generic linux input device.

Reviewed-by: Pavel Machek <pavel@ucw.cz>
Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Sebastian Reichel <sre@kernel.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2014-05-29 00:05:59 -07:00