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

Jonathan Cameron jic23 at kernel.org
Sat Jan 21 14:08:47 CET 2017


On 16/01/17 06:34, H. Nikolaus Schaller wrote:
> ping
Always good to say who you are pinging ;)  Saves the rest of us wondering
if we have missing something we should have reviewed.

Guessing it's Dmitry in this case!

Jonathan
> 
>> Am 28.12.2016 um 15:53 schrieb H. Nikolaus Schaller <hns at goldelico.com>:
>>
>> Changes V9:
>> * added explicit CONFIG for TSC2007_IIO and simplified Makefile (suggested by Dmitry Torokhov <dmitry.torokhov at gmail.com>)
>> * 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 at kernel.org>)
>> * add some more Reviewed-by: and Acked-by:
>> * mutiple improvements suggested by Dmitry Torokhov <dmitry.torokhov at gmail.com>:
>> ** 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 at kernel.org>)
>> * forward reference struct iio_dev * instead of condition in tsc2007.h (asked for by Jonathan Cameron <jic23 at kernel.org>)
>> * 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 at ti.com>)
>> * ads7846: remove MODULE_ALIAS for SPI (suggested by Andrew F. Davis <afd at ti.com>)
>> * 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 at kernel.org>)
>>
>> 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 at kernel.org>)
>> * make the iio extension depend on CONFIG_IIO rather than selecting it (suggested by Jonathan Cameron <jic23 at kernel.org>)
>> * 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
>>
> 



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