HI, Am 16.11.2015 um 15:37 schrieb Grazvydas Ignotas <nota...@gmail.com>:
> Hi, > > On Fri, Nov 13, 2015 at 10:35 PM, H. Nikolaus Schaller > <h...@goldelico.com> wrote: >> The standard touch screen bindings [1] replace the private ti,swap-xy >> with touchscreen-swaped-x-y. And for the Openpandora we use >> touchscreen-size etc. to match the LCD screen size. >> >> [1]: Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt >> >> Signed-off-by: H. Nikolaus Schaller <h...@goldelico.com> >> --- >> arch/arm/boot/dts/omap3-lilly-a83x.dtsi | 2 +- >> arch/arm/boot/dts/omap3-pandora-common.dtsi | 17 +++++++++++++---- >> arch/arm/boot/dts/omap3-panel-sharp-ls037v7dw01.dtsi | 2 +- >> 3 files changed, 15 insertions(+), 6 deletions(-) >> >> diff --git a/arch/arm/boot/dts/omap3-lilly-a83x.dtsi >> b/arch/arm/boot/dts/omap3-lilly-a83x.dtsi >> index d0dd036..01dae66 100644 >> --- a/arch/arm/boot/dts/omap3-lilly-a83x.dtsi >> +++ b/arch/arm/boot/dts/omap3-lilly-a83x.dtsi >> @@ -325,7 +325,7 @@ >> ti,y-max = /bits/ 16 <3600>; >> ti,x-plate-ohms = /bits/ 16 <80>; >> ti,pressure-max = /bits/ 16 <255>; >> - ti,swap-xy; >> + touchscreen-swapped-x-y; >> >> linux,wakeup; >> }; >> diff --git a/arch/arm/boot/dts/omap3-pandora-common.dtsi >> b/arch/arm/boot/dts/omap3-pandora-common.dtsi >> index f672a04..9497cc6 100644 >> --- a/arch/arm/boot/dts/omap3-pandora-common.dtsi >> +++ b/arch/arm/boot/dts/omap3-pandora-common.dtsi >> @@ -696,10 +696,19 @@ >> pendown-gpio = <&gpio3 30 0>; >> vcc-supply = <&vaux4>; >> >> - ti,x-min = /bits/ 16 <0>; >> - ti,x-max = /bits/ 16 <8000>; >> - ti,y-min = /bits/ 16 <0>; >> - ti,y-max = /bits/ 16 <4800>; >> + touchscreen-size-x = <800>; >> + touchscreen-size-y = <480>; >> + touchscreen-max-pressure = <1000>; >> + touchscreen-fuzz-x = <16>; >> + touchscreen-fuzz-y = <16>; >> + touchscreen-fuzz-pressure = <10>; >> + touchscreen-inverted-x; >> + touchscreen-inverted-y; >> + >> + ti,x-min = /bits/ 16 <160>; >> + ti,x-max = /bits/ 16 <3900>; >> + ti,y-min = /bits/ 16 <220>; >> + ti,y-max = /bits/ 16 <3750>; > > I'm not sure this is a good idea, there have been at least 3 different > batches of LCDs which slightly different touchscreens attached, with > such thresholds we might end up with unreachable touchscreen points on > some units. If I understand right, calibration won't help if for some > screen locations ADC reading goes below/above these min/max thresholds > on some specific units? If so there should probably be at least 10% > margin in either case to make calibration useful. Ok, then someone owning all variants should test and we should use the min/max values we find. I.e. the touch with the biggest ADC value range. All others have smaller screens which can be calibrated in user space. But 10% is good enough to boot and start manual calibration. Alternatively, we can set them to 0 and 4095 (or remove them to use defaults). BR and thanks, Nikolaus -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
