On Wed, 28 Apr 2021 09:32:05 +0200 Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx> wrote: Hi Oleksij, Series applied with the tweaks as per review to patch 3. Please check I didn't mess those up though. Applied to the togreg branch of iio.git and pushed out as testing for the autobuilders to poke at it. Thanks, Jonathan > changes v6: > - get blessing from Dmitry Torokhov > - rebase against latest iio/testing > - use simple name for iio_dev->name > - use Jonathan's version for oversampling-ratio description > > changes v5: > - remove type for the settling-time-us property > > changes v4: > - spell fixes > - add more comments > - make code more readable > - move scan_buf to the priv > - use FIELD_GET to extract ADC data > - make some multi line code as one line > - do not use atomic API for trig_more_count > - fix build warning on 64bit system > - add NULL check for the devm_kasprintf() > - use return devm_iio_device_register(), without additional error > printing. > > changes v3: > - different spell fixes > - add some notes about driver structure > - rename the trigger to point on the touchscreen nature of it > - rename DT binding to oversampling-ratio > - make sure we have some defaults in case no DT property is set > > changes v2: > - rework and extend DT binding properties > - remove touchscreen related code from the IIO ADC driver > - make trigger be active longer then IRQ is requesting. This is needed > to get "inactive" samples > - make oversampling and settle time configurable > > TI TSC2046 is a touchscreen controller based on 8 channel ADC. Since most of > this ADC based touchscreen controller share same set of challenges, it > is better keep then as simple IIO ADC devices attached to a generic > resistive-adc-touch driver. > > This driver can replace drivers/input/touchscreen/ads7846.c and has > following advantages over it: > - less code to maintain > - shared code paths (resistive-adc-touch, iio-hwmon, etc) > - can be used as plain IIO ADC to investigate signaling issues or test > real capacity of the plates and attached low-pass filters > (or use the touchscreen as a microphone if you like ;) ) > > Oleksij Rempel (3): > dt-bindings:iio:adc: add generic settling-time-us and > oversampling-ratio channel properties > dt-bindings:iio:adc: add documentation for TI TSC2046 controller > iio: adc: add ADC driver for the TI TSC2046 controller > > .../devicetree/bindings/iio/adc/adc.yaml | 12 + > .../bindings/iio/adc/ti,tsc2046.yaml | 115 +++ > MAINTAINERS | 8 + > drivers/iio/adc/Kconfig | 12 + > drivers/iio/adc/Makefile | 1 + > drivers/iio/adc/ti-tsc2046.c | 720 ++++++++++++++++++ > 6 files changed, 868 insertions(+) > create mode 100644 Documentation/devicetree/bindings/iio/adc/ti,tsc2046.yaml > create mode 100644 drivers/iio/adc/ti-tsc2046.c >
