Re: [PATCH v9 0/8] drivers: touchscreen: tsc2007 and ads7846/tsc2046 improvements (use common touchscreen bindings, pre-calibration, spi fix and provide iio raw values)

From: H. Nikolaus Schaller
Date: Mon Jan 16 2017 - 01:34:36 EST

ping

> Am 28.12.2016 um 15:53 schrieb H. Nikolaus Schaller <hns@xxxxxxxxxxxxx>:
>
> Changes V9:
> * added explicit CONFIG for TSC2007_IIO and simplified Makefile (suggested by Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>)
> * make the tsc2007 iio patch the last one in this sequence
>
> 2016-11-22 15:02:42: Changes V8:
> * fix compilation for CONFIG_IIO=m (reported by Jonathan Cameron <jic23@xxxxxxxxxx>)
> * add some more Reviewed-by: and Acked-by:
> * mutiple improvements suggested by Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>:
> ** drop patch "send pendown and penup only once" (input core does take care of it now)
> ** remove not necessary EXPORT_SYMBOL
> ** remove explicit file names from comment header
> ** move tsc2007_iio_configure() to the end of the probe process and simplify the error path again
> ** remove unnecessary input_unregister_device()
> ** improvement for compilation with CONFIG_IIO=m and CONFIG_TSC2007=y
>
> 2016-11-11 20:02:11: Changes V7:
> * rearranged the include files (asked for by Jonathan Cameron <jic23@xxxxxxxxxx>)
> * forward reference struct iio_dev * instead of condition in tsc2007.h (asked for by Jonathan Cameron <jic23@xxxxxxxxxx>)
> * add some Acked-by:
>
> 2016-10-27 10:44:29: Changes V6:
> * iio patch (no changes elsewhere)
> - tsc2007_iio: fix a missing return 0 for non-iio case (found by kbuid test robot)
> - tsc2007_core: group error return paths so that tsc2007_iio_unconfigure is called at only one place
> - tsc2007_iio: fix copyright (this file is 100% original work)
>
> 2016-10-25 21:26:46: Changes V5:
> * ads7846: remove an empty line (suggested by Andrew F. Davis <afd@xxxxxx>)
> * ads7846: remove MODULE_ALIAS for SPI (suggested by Andrew F. Davis <afd@xxxxxx>)
> * tsc2007: fix a bug from swapping patch 3/n and patch 4/n (found by kbuild test robot)
> * refactored tsc2007 into tsc2007_core and tsc2007_iio (asked for by Jonathan Cameron <jic23@xxxxxxxxxx>)
>
> 2016-10-17 16:00:02: Changes V4:
> * fix a merge/squash issue resulting in a non-bisectable patch set (suggested by kbuid test robot)
> * remove some unnecessary #include (suggested by Jonathan Cameron <jic23@xxxxxxxxxx>)
> * make the iio extension depend on CONFIG_IIO rather than selecting it (suggested by Jonathan Cameron <jic23@xxxxxxxxxx>)
> * swapped patch 3/n and patch 4/n to remove internal dependency
>
> 2016-09-23 14:41:23: Changes V3:
> * fix an issue with swapping
> * remove hard clipping to min/max rectangle - some systems expect to handle negative coordinates
> * make use of commit ed7c9870c9bc ("Input: of_touchscreen - add support for inverted / swapped axes")
>
> 2015-11-13 21:36:07: Changes V2:
> * add a patch to make drivers still recognise the old "ti,swap-xy" property (suggested by Rob Herring)
>
> 2015-11-06 16:14:53: V1: This patch series improves the drivers for the tsc2007 and
> ads7846/tsc2046 touchscreen controllers which are e.g. used by the GTA04
> OpenPandora and Pyra devices.
>
> New common bindings have been defined by
> commit b98abe52fa8e ("Input: add common DT binding for touchscreens"):
>
> Documentation/devicetree/bindings/input/touchscreen/touchscreen.txt
>
> which also defines a helper function to parse the DT. These new parameters
> allow to specify the fuzz factors (jitter suppression), inversion of x or y axis and
> swapping of x and y to achieve inversion and rotation so that the touch
> coordinate axes match the natural orientation of the display panel.
>
> Another improvement is to better use the min/max ADC values and
> scale to the screen size as defined by the DT. This allows to coarsely
> calibrate the touch to match the LCD to which it is glued on so that the
> touch can quite precisely be operated before any user-space fine-calibration
> can be (and needs to be) started.
>
> For the adc7846 we fix an issue with the spi module table.
>
> Finally we add an iio interface for the AUX and temperature ADC channels of
> the tsc2007 and also provide the touch screen raw values. This allows to read
> an optional ambient light sensor installed on the gta04 board and improves
> calibration and hardware monitoring.
>
>
> H. Nikolaus Schaller (8):
> drivers:input:tsc2007: add new common binding names, pre-calibration,
> flipping and rotation
> drivers:input:tsc2007: check for presence and power down tsc2007
> during probe
> DT:omap3+tsc2007: use new common touchscreen bindings
> drivers:input:ads7846(+tsc2046): add new common binding names,
> pre-calibration and flipping
> dt-bindings: input: move ads7846 bindings to touchscreen subdirectory
> drivers:input:ads7846(+tsc2046): fix spi module table
> DT:omap3+ads7846: use new common touchscreen bindings
> drivers:input:tsc2007: add iio interface to read external ADC input
> and temperature
>
> .../bindings/input/{ => touchscreen}/ads7846.txt | 9 +-
> .../bindings/input/touchscreen/tsc2007.txt | 20 +-
> arch/arm/boot/dts/omap3-gta04.dtsi | 25 ++-
> arch/arm/boot/dts/omap3-lilly-a83x.dtsi | 2 +-
> arch/arm/boot/dts/omap3-pandora-common.dtsi | 17 +-
> .../boot/dts/omap3-panel-sharp-ls037v7dw01.dtsi | 3 +-
> drivers/input/touchscreen/Kconfig | 10 +
> drivers/input/touchscreen/Makefile | 2 +
> drivers/input/touchscreen/ads7846.c | 71 ++++++--
> drivers/input/touchscreen/tsc2007.h | 116 ++++++++++++
> .../touchscreen/{tsc2007.c => tsc2007_core.c} | 201 ++++++++++++---------
> drivers/input/touchscreen/tsc2007_iio.c | 150 +++++++++++++++
> include/linux/i2c/tsc2007.h | 8 +
> 13 files changed, 520 insertions(+), 114 deletions(-)
> rename Documentation/devicetree/bindings/input/{ => touchscreen}/ads7846.txt (90%)
> create mode 100644 drivers/input/touchscreen/tsc2007.h
> rename drivers/input/touchscreen/{tsc2007.c => tsc2007_core.c} (74%)
> create mode 100644 drivers/input/touchscreen/tsc2007_iio.c
>
> --
> 2.7.3
>