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From: Oleksij Rempel <o.rempel@pengutronix.de>
To: Rob Herring <robh+dt@kernel.org>, Jonathan Cameron <jic23@kernel.org>
Cc: Oleksij Rempel <o.rempel@pengutronix.de>,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	Pengutronix Kernel Team <kernel@pengutronix.de>,
	David Jander <david@protonic.nl>,
	Robin van der Gracht <robin@protonic.nl>,
	linux-iio@vger.kernel.org, Lars-Peter Clausen <lars@metafoo.de>,
	Peter Meerwald-Stadler <pmeerw@pmeerw.net>,
	Dmitry Torokhov <dmitry.torokhov@gmail.com>
Subject: [PATCH v2 0/3] mainline ti tsc2046 adc driver
Date: Fri, 12 Mar 2021 11:55:12 +0100	[thread overview]
Message-ID: <20210312105515.32055-1-o.rempel@pengutronix.de> (raw)

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 average-samples
    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      |   9 +
 .../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                  | 713 ++++++++++++++++++
 6 files changed, 858 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/adc/ti,tsc2046.yaml
 create mode 100644 drivers/iio/adc/ti-tsc2046.c

-- 
2.29.2


             reply	other threads:[~2021-03-12 10:56 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-12 10:55 Oleksij Rempel [this message]
2021-03-12 10:55 ` [PATCH v2 1/3] dt-bindings:iio:adc: add generic settling-time-us and average-samples channel properties Oleksij Rempel
2021-03-13 15:15   ` Jonathan Cameron
2021-03-12 10:55 ` [PATCH v2 2/3] dt-bindings:iio:adc: add documentation for TI TSC2046 controller Oleksij Rempel
2021-03-15 16:20   ` Rob Herring
2021-03-12 10:55 ` [PATCH v2 3/3] iio: adc: add ADC driver for the " Oleksij Rempel
2021-03-12 15:32   ` Andy Shevchenko
2021-03-12 17:49   ` kernel test robot
2021-03-13 16:11   ` Jonathan Cameron
2021-03-16  5:57     ` Oleksij Rempel

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