Re: [PATCH v9 1/8] drivers:input:tsc2007: add new common binding names, pre-calibration, flipping and rotation
From: Rob Herring <robh@kernel.org>
Date: 2017-01-09 17:43:52
Also in:
linux-devicetree, linux-iio, linux-omap, lkml
On Wed, Dec 28, 2016 at 03:53:16PM +0100, H. Nikolaus Schaller wrote:
commit b98abe52fa8e ("Input: add common DT binding for touchscreens")
introduced common DT bindings for touchscreens [1] and a helper function to
parse the DT.
commit ed7c9870c9bc ("Input: of_touchscreen - add support for inverted / swapped axes")
added another helper for parsing axis inversion and swapping
and applying them to x and y coordinates.
Both helpers have been integrated to accommodate any orientation of the
touch panel in relation to the LCD.
A new feature is to introduce scaling the min/max ADC values to the screen
size.
This makes it possible to pre-calibrate the touch so that is (almost)
exactly matches the LCD pixel coordinates it is glued onto. This allows to
well enough operate the touch before a user space calibration step can
improve the precision.
Please note that the old ti,fuzz properties have been removed since they
are replaced by the common bindings touchscreen-fuzz-x/y/z.
Finally, calculate_pressure has been renamed to calculate_resistance
because that is what it is doing.
[1]: Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt
Signed-off-by: H. Nikolaus Schaller <redacted>
---
.../bindings/input/touchscreen/tsc2007.txt | 20 ++--Acked-by: Rob Herring <robh@kernel.org>
drivers/input/touchscreen/tsc2007.c | 120 +++++++++++++++++---- include/linux/i2c/tsc2007.h | 8 ++ 3 files changed, 118 insertions(+), 30 deletions(-)