Input: switch back to struct platform_driver::remove()

After commit 0edb555a65d1 ("platform: Make platform_driver::remove()
return void") .remove() is (again) the right callback to implement for
pla

Input: switch back to struct platform_driver::remove()

After commit 0edb555a65d1 ("platform: Make platform_driver::remove()
return void") .remove() is (again) the right callback to implement for
platform drivers.

Convert all platform drivers below drivers/input/ to use .remove(), with
the eventual goal to drop struct platform_driver::remove_new(). As
.remove() and .remove_new() have the same prototypes, conversion is done
by just changing the structure member name in the driver initializer.

While touching these files, make indention of the struct initializer
consistent in a few drivers.

Signed-off-by: Uwe Kleine-König <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: sun4i-ts - convert to platform remove callback returning void

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do er

Input: sun4i-ts - convert to platform remove callback returning void

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new() which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <[email protected]>
Acked-by: Jernej Skrabec <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>

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docs: update some straggling Documentation/arm references

The Arm documentation has moved to Documentation/arch/arm; update the
last remaining references to match.

Cc: Dmitry Torokhov <dmitry.torok

docs: update some straggling Documentation/arm references

The Arm documentation has moved to Documentation/arch/arm; update the
last remaining references to match.

Cc: Dmitry Torokhov <[email protected]>
Cc: Chen-Yu Tsai <[email protected]>
Cc: Samuel Holland <[email protected]>
Cc: Thierry Reding <[email protected]>
Acked-by: Nicolas Ferre <[email protected]>
Acked-by: Jernej Skrabec <[email protected]>
Acked-by: Greg Kroah-Hartman <[email protected]>
Acked-by: Uwe Kleine-König <[email protected]> # for pwm
Signed-off-by: Jonathan Corbet <[email protected]>

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Input: sun4i-ts - drop of_match_ptr for ID table

The driver can match only via the DT table so the table should be always
used and the of_match_ptr does not have any sense (this also allows ACPI
mat

Input: sun4i-ts - drop of_match_ptr for ID table

The driver can match only via the DT table so the table should be always
used and the of_match_ptr does not have any sense (this also allows ACPI
matching via PRP0001, even though it might not be relevant here). This
also fixes !CONFIG_OF error:

drivers/input/touchscreen/sun4i-ts.c:392:34: error: ‘sun4i_ts_of_match’ defined but not used [-Werror=unused-const-variable=]

Signed-off-by: Krzysztof Kozlowski <[email protected]>
Acked-by: Jernej Skrabec <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>

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thermal/core: Use the thermal zone 'devdata' accessor in remaining drivers

The thermal zone device structure is exposed to the different drivers
and obviously they access the internals while that sh

thermal/core: Use the thermal zone 'devdata' accessor in remaining drivers

The thermal zone device structure is exposed to the different drivers
and obviously they access the internals while that should be
restricted to the core thermal code.

In order to self-encapsulate the thermal core code, we need to prevent
the drivers accessing directly the thermal zone structure and provide
accessor functions to deal with.

Use the devdata accessor introduced in the previous patch.

No functional changes intended.

Signed-off-by: Daniel Lezcano <[email protected]>
Acked-by: Mark Brown <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]> #mlxsw
Acked-by: Gregory Greenman <[email protected]> #iwlwifi
Acked-by: Sebastian Reichel <[email protected]> #power_supply
Acked-by: Damien Le Moal <[email protected]> #ahci
Acked-by: Rafael J. Wysocki <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>

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Input: sun4i-ts - switch to new of thermal API

The thermal OF code has a new API allowing to migrate the OF
initialization to a simpler approach. The ops are no longer device
tree specific and are t

Input: sun4i-ts - switch to new of thermal API

The thermal OF code has a new API allowing to migrate the OF
initialization to a simpler approach. The ops are no longer device
tree specific and are the generic ones provided by the core code.

Convert the ops to the thermal_zone_device_ops format and use the new
API to register the thermal zone with these generic ops.

Signed-off-by: Daniel Lezcano <[email protected]>
Acked-by: Dmitry Torokhov <[email protected]>
Acked-by: Jernej Skrabec <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Daniel Lezcano <[email protected]>

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Input: sun4i-ts - add a check for devm_thermal_zone_of_sensor_register

The driver misses a check for devm_thermal_zone_of_sensor_register().
Add a check to fix it.

Fixes: e28d0c9cd381 ("input: conv

Input: sun4i-ts - add a check for devm_thermal_zone_of_sensor_register

The driver misses a check for devm_thermal_zone_of_sensor_register().
Add a check to fix it.

Fixes: e28d0c9cd381 ("input: convert sun4i-ts to use devm_thermal_zone_of_sensor_register")
Signed-off-by: Chuhong Yuan <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: sun4i-ts - use devm_platform_ioremap_resource()

devm_platform_ioremap_resource() internally have platform_get_resource()
and devm_ioremap_resource() in it. So instead of calling them separate

Input: sun4i-ts - use devm_platform_ioremap_resource()

devm_platform_ioremap_resource() internally have platform_get_resource()
and devm_ioremap_resource() in it. So instead of calling them separately
use devm_platform_ioremap_resource() directly.

Signed-off-by: Mukesh Ojha <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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docs: arm: convert docs to ReST and rename to *.rst

Converts ARM the text files to ReST, preparing them to be an
architecture book.

The conversion is actually:
- add blank lines and identation in

docs: arm: convert docs to ReST and rename to *.rst

Converts ARM the text files to ReST, preparing them to be an
architecture book.

The conversion is actually:
- add blank lines and identation in order to identify paragraphs;
- fix tables markups;
- add some lists markups;
- mark literal blocks;
- adjust title markups.

At its new index.rst, let's add a :orphan: while this is not linked to
the main index.rst file, in order to avoid build warnings.

Signed-off-by: Mauro Carvalho Chehab <[email protected]>
Reviewed-by Corentin Labbe <[email protected]> # For sun4i-ss

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157

Based on 3 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of th

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157

Based on 3 normalized pattern(s):

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version this program is distributed in the
hope that it will be useful but without any warranty without even
the implied warranty of merchantability or fitness for a particular
purpose see the gnu general public license for more details

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version [author] [kishon] [vijay] [abraham]
[i] [kishon]@[ti] [com] this program is distributed in the hope that
it will be useful but without any warranty without even the implied
warranty of merchantability or fitness for a particular purpose see
the gnu general public license for more details

this program is free software you can redistribute it and or modify
it under the terms of the gnu general public license as published by
the free software foundation either version 2 of the license or at
your option any later version [author] [graeme] [gregory]
[gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i]
[kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema]
[hk] [hemahk]@[ti] [com] this program is distributed in the hope
that it will be useful but without any warranty without even the
implied warranty of merchantability or fitness for a particular
purpose see the gnu general public license for more details

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 1105 file(s).

Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Allison Randal <[email protected]>
Reviewed-by: Richard Fontana <[email protected]>
Reviewed-by: Kate Stewart <[email protected]>
Cc: [email protected]
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

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Input: sun4i-ts - constify thermal_zone_of_device_ops structures

The thermal_zone_of_device_ops structure is only passed as the fourth
argument to devm_thermal_zone_of_sensor_register, which is decl

Input: sun4i-ts - constify thermal_zone_of_device_ops structures

The thermal_zone_of_device_ops structure is only passed as the fourth
argument to devm_thermal_zone_of_sensor_register, which is declared
as const. Thus the thermal_zone_of_device_ops structure itself can
be const.

Done with the help of Coccinelle.

Signed-off-by: Julia Lawall <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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input: convert sun4i-ts to use devm_thermal_zone_of_sensor_register

This changes the driver to use the devm_ version
of thermal_zone_of_sensor_register and cleans
up the local points and unregister

input: convert sun4i-ts to use devm_thermal_zone_of_sensor_register

This changes the driver to use the devm_ version
of thermal_zone_of_sensor_register and cleans
up the local points and unregister calls.

Cc: Dmitry Torokhov <[email protected]>
Cc: Maxime Ripard <[email protected]>
Cc: Chen-Yu Tsai <[email protected]>
Cc: Hans de Goede <[email protected]>
Cc: Zhang Rui <[email protected]>
Cc: Lukasz Majewski <[email protected]>
Cc: Heiko Stuebner <[email protected]>
Cc: Sascha Hauer <[email protected]>
Cc: Jens Thiele <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Acked-by: Dmitry Torokhov <[email protected]>
Acked-by: Hans de Goede <[email protected]>
Signed-off-by: Eduardo Valentin <[email protected]>

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thermal: consistently use int for temperatures

The thermal code uses int, long and unsigned long for temperatures
in different places.

Using an unsigned type limits the thermal framework to positiv

thermal: consistently use int for temperatures

The thermal code uses int, long and unsigned long for temperatures
in different places.

Using an unsigned type limits the thermal framework to positive
temperatures without need. Also several drivers currently will report
temperatures near UINT_MAX for temperatures below 0°C. This will probably
immediately shut the machine down due to overtemperature if started below
0°C.

'long' is 64bit on several architectures. This is not needed since INT_MAX °mC
is above the melting point of all known materials.

Consistently use a plain 'int' for temperatures throughout the thermal code and
the drivers. This only changes the places in the drivers where the temperature
is passed around as pointer, when drivers internally use another type this is
not changed.

Signed-off-by: Sascha Hauer <[email protected]>
Acked-by: Geert Uytterhoeven <[email protected]>
Reviewed-by: Jean Delvare <[email protected]>
Reviewed-by: Lukasz Majewski <[email protected]>
Reviewed-by: Darren Hart <[email protected]>
Reviewed-by: Heiko Stuebner <[email protected]>
Reviewed-by: Peter Feuerer <[email protected]>
Cc: Punit Agrawal <[email protected]>
Cc: Zhang Rui <[email protected]>
Cc: Eduardo Valentin <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: Jean Delvare <[email protected]>
Cc: Peter Feuerer <[email protected]>
Cc: Heiko Stuebner <[email protected]>
Cc: Lukasz Majewski <[email protected]>
Cc: Stephen Warren <[email protected]>
Cc: Thierry Reding <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Cc: Guenter Roeck <[email protected]>
Cc: Rafael J. Wysocki <[email protected]>
Cc: Maxime Ripard <[email protected]>
Cc: Darren Hart <[email protected]>
Cc: [email protected]
Signed-off-by: Zhang Rui <[email protected]>

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Input: sun4i-ts - allow controlling filter and sensitivity via DT

This commit introduces two new optional device-tree properties:
"tp-sensitive-adjust": adjust sensitivity of pen down detection
"fil

Input: sun4i-ts - allow controlling filter and sensitivity via DT

This commit introduces two new optional device-tree properties:
"tp-sensitive-adjust": adjust sensitivity of pen down detection
"filter-type": select median and averaging filter

The previous fixed defaults, didn't work well for the Olimex
A13-LCD10TS (I have).

Signed-off-by: Jens Thiele <[email protected]>
Reviewed-by: Hans de Goede <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: sun4i-ts - really fix A10 temperature reporting

The commit titled: "Input: sun4i-ts - A10 (sun4i) has a different
temperature curve" contains a math error, the offset it uses is in degrees,

Input: sun4i-ts - really fix A10 temperature reporting

The commit titled: "Input: sun4i-ts - A10 (sun4i) has a different
temperature curve" contains a math error, the offset it uses is in degrees,
but the actual code applies the offset before multiplying by stepsize :|

Given that this is rather backwards (every math course ever thought applies
the multiplication before the offset for linear functions), this commit
fixes things by changing the code applying the offset to do the logical
thing, adjusting the offset for the other models accordingly.

This has been tested on an A10, A13, A20 and A31 to make sure everything
really is correct now.

Signed-off-by: Hans de Goede <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: sun4i-ts - A10 (sun4i) has a different temperature curve

Testing has revealed that the temperature in the rtp controller of the A10
(sun4i) SoC has a different curve then on the A13 (sun5i)

Input: sun4i-ts - A10 (sun4i) has a different temperature curve

Testing has revealed that the temperature in the rtp controller of the A10
(sun4i) SoC has a different curve then on the A13 (sun5i) and later models.

Add a new sun5i-a13-ts compatible to differentiate the newer models and
set the curve based on the compatible string.

The new curve is still not ideal on all A10-s, that seems to have to
do with there being a large spread between different A10-s out there,
the new curve us based on callibration results on 4 completely different
models:
raw min raw max temp min temp max stepsize offset
Tong Zhang's hackberry 2402 2680 45.0 80.0 0.125 -255.3
Hansg's Cubieboard 2207 2300 36.0 45.0 0.096 -175.8
Olliver's lime 1 (*): 2258 2537 48.3 87.1 0.139 -265.7
Olliver's lime 2 (*): 2222 2486 46.7 91.7 0.170 -331.0
*) from: http://linux-sunxi.org/Temperature_Calibration

Average all 4: 0.133 -257.0
Average without outliers (middle 2): 0.132 -261.0

Since it is better to slightly overreport the temperature this patch uses
the average of all 4 as curve.

This fixes the temperature reported on the A10 being much higher then
expected.

Reported-by: Tong Zhang <[email protected]>
Signed-off-by: Hans de Goede <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: sun4i-ts - add support for touchpanel controller on A31

The Allwinner A31 SoC (sun6i) has the same resistive touchpanel controller
as on other sunxi platforms. The only difference between the

Input: sun4i-ts - add support for touchpanel controller on A31

The Allwinner A31 SoC (sun6i) has the same resistive touchpanel controller
as on other sunxi platforms. The only difference between the variants is
the control bits for enabling operations are left-shifted by 1 on the A31.

Also update the comment for the original temperature sensor with
information from Allwinner.

Signed-off-by: Chen-Yu Tsai <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: sun4i-ts - add thermal zone sensor support

The touchscreen controller has a temperature sensor embedded in the SoC,
which already has hwmon support in the driver.

Add DT thermal zone support

Input: sun4i-ts - add thermal zone sensor support

The touchscreen controller has a temperature sensor embedded in the SoC,
which already has hwmon support in the driver.

Add DT thermal zone support so we can use it with cpufreq for thermal
throttling.

This also adds a comment stating that we do not know the actual formula
for calculating the temperature.

Signed-off-by: Chen-Yu Tsai <[email protected]>
Acked-by: Eduardo Valentin <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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input: touchscreen: drop owner assignment from platform_drivers

A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang <wsa@the-dreams

input: touchscreen: drop owner assignment from platform_drivers

A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang <[email protected]>

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Input: sun4i-ts - add support for temperature sensor

The sun4i resisitive touchscreen controller also comes with a built-in
temperature sensor. This commit adds support for it.

This commit also int

Input: sun4i-ts - add support for temperature sensor

The sun4i resisitive touchscreen controller also comes with a built-in
temperature sensor. This commit adds support for it.

This commit also introduces a new "ts-attached" device-tree property,
when this is not set, the input part of the driver won't register. This way
the internal temperature sensor can be used to measure the SoC temperature
independent of there actually being a touchscreen attached to the controller.

Signed-off-by: Hans de Goede <[email protected]>
Reviewed-by: Guenter Roeck <[email protected]>
Acked-by: Maxime Ripard <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: add driver for Allwinner sunxi SoC's rtp controller

Note the sun4i-ts controller is capable of detecting a second touch, but
when a second touch is present then the accuracy becomes so bad th

Input: add driver for Allwinner sunxi SoC's rtp controller

Note the sun4i-ts controller is capable of detecting a second touch, but
when a second touch is present then the accuracy becomes so bad the
reported touch location is not useable.

The original android driver contains some complicated heuristics using the
aprox. distance between the 2 touches to see if the user is making a pinch
open / close movement, and then reports emulated multi-touch events around
the last touch coordinate (as the dual-touch coordinates are worthless).

These kinds of heuristics are just asking for trouble (and don't belong in
the kernel). So this driver offers straight forward, reliable single touch
functionality only.

Signed-off-by: Hans de Goede <[email protected]>
Acked-by: Maxime Ripard <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

show more ...