Hello, The patchset adds support for 4 wire touchscreen on Toradex Colibri VF50 modules. Patches are tested on top of shawn's for-next branch. Changes since v2: 1. Fix pin multiplexing for pins in idle state. Configuration of the pen detect pull up viz. PTA19__GPIO_9 resulted in generation of pen irq's on a continuous basis. 2. Fix pinmux of the ADC pins as per the recommended pinmux in TRM. 3. Use a threaded irq handler instead of a irq handler plus workqueue approach. 4. Use a low level trigger with oneshot flag specifier instead of the previous falling edge triggered irq's. This coupled with the fix in point 1 fixes the previous continuous spurious irq generation bug. 5. Change/fix the TS measurement logic to account for the fact that iio_channel_read_raw might actually return an error. To be more specific use break instead of continue and take care to close the FET's in case of channel read error. 6. Drop the first patch "Add io-channel-cells property for ADC node" as it has already been applied. 7. Move the iio channel get call again at the start. Having it in the end resulted in crashes sometimes when iio was not probed and the ts device got probed and opened earlier. Changes since v1: 1. Fix/drop comments 2. Use an inline function for multiple gpiod_get calls in probe 3. Remove the pull up in the pinmux specified in DT for touchctrl_gpios 4. Add the io-channel-cells property before status property. 5. Add GPIOLIB as dependency in the Kconfig file Version 2 of the patchset can be found here https://www.mail-archive.com/linux-input@xxxxxxxxxxxxxxx/msg18090.html Version 1 of the patchset can be found here https://lkml.org/lkml/2015/6/30/103 Thank you very much for the feedback till now. Regards, Sanchayan. Sanchayan Maity (3): ARM: dts: vf500-colibri: Add device tree node for touchscreen support input: Add DT binding documentation for Colibri VF50 touchscreen touchscreen: colibri-vf50-ts: Add touchscreen support for Colibri VF50 .../bindings/input/touchscreen/colibri-vf50-ts.txt | 32 ++ arch/arm/boot/dts/vf500-colibri-eval-v3.dts | 4 + arch/arm/boot/dts/vf500-colibri.dtsi | 45 +++ drivers/input/touchscreen/Kconfig | 12 + drivers/input/touchscreen/Makefile | 1 + drivers/input/touchscreen/colibri-vf50-ts.c | 404 +++++++++++++++++++++ 6 files changed, 498 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/touchscreen/colibri-vf50-ts.txt create mode 100644 drivers/input/touchscreen/colibri-vf50-ts.c -- 2.5.0 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
