Re: [PATCH v9 1/8] drivers:input:tsc2007: add new common binding names, pre-calibration, flipping and rotation

Rob Herring
2017-01-09T17:43:44Z

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 <hns@goldelico.com>
> ---
> .../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(-)