Re: [PATCH 1/7] drivers:input:tsc2007: add new common binding names, pre-calibration, flipping and rotation

From: Rob Herring
Date: Mon Nov 09 2015 - 12:33:57 EST

On Fri, Nov 06, 2015 at 04:14:43PM +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.
> This has been integrated and interpretation of the inversion (flipping)
> properties for the x and y axis has been added to accommodate any
> orientation of the touch in relation to the LCD.
> By scaling the min/max ADC values to the screen size it is now possible to
> pre-calibrate the touch so that is (almost) exactly matches the LCD it is
> glued onto. This allows to well enough operate the touch before a user
> space calibration can improve the precision.
> 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@xxxxxxxxxxxxx>
> ---
> .../bindings/input/touchscreen/tsc2007.txt | 20 +--
> drivers/input/touchscreen/tsc2007.c | 135 +++++++++++++++++----
> include/linux/i2c/tsc2007.h | 8 ++
> 3 files changed, 135 insertions(+), 28 deletions(-)

This one has similar problems with breaking backwards compatibility.

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