Input: ad714x - use guard notation when acquiring mutex

Using guard notation makes the code more compact and error handling
more robust by ensuring that mutexes are released in all code paths
when c

Input: ad714x - use guard notation when acquiring mutex

Using guard notation makes the code more compact and error handling
more robust by ensuring that mutexes are released in all code paths
when control leaves critical section.

Reviewed-by: Javier Carrasco <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: ad714x - unify dev_pm_ops using EXPORT_SIMPLE_DEV_PM_OPS()

The I2C and SPI PM callbacks were identical (though wrapped in some
bouncing out to the bus specific container of the struct device

Input: ad714x - unify dev_pm_ops using EXPORT_SIMPLE_DEV_PM_OPS()

The I2C and SPI PM callbacks were identical (though wrapped in some
bouncing out to the bus specific container of the struct device and
then back again to get the drvdata). As such rather than just moving
these to SIMPLE_DEV_PM_OPS() and pm_sleep_ptr() take the opportunity
to unify the struct dev_pm_ops and use the new EXPORT_SIMPLE_DEV_PM_OPS()
macro so that we can drop the unused suspend and resume callbacks as well
as the structure if !CONFIG_PM_SLEEP without needing to mark the callbacks
__maybe_unused.

Signed-off-by: Jonathan Cameron <[email protected]>
Cc: Michael Hennerich <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Dmitry Torokhov <[email protected]>

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treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 149

Based on 1 normalized pattern(s):

licensed under the gpl 2 or later

extracted by the scancode license scanner the SPDX license

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 149

Based on 1 normalized pattern(s):

licensed under the gpl 2 or later

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 82 file(s).

Signed-off-by: Thomas Gleixner <[email protected]>
Reviewed-by: Allison Randal <[email protected]>
Reviewed-by: Kate Stewart <[email protected]>
Reviewed-by: Richard Fontana <[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: ad714x - convert to using managed resources

Use managed resource functions devm_request_threaded_irq,
devm_inpute_allocate_device and devm_kzalloc to simplify error handling.
Also, remove use

Input: ad714x - convert to using managed resources

Use managed resource functions devm_request_threaded_irq,
devm_inpute_allocate_device and devm_kzalloc to simplify error handling.
Also, remove use of input_unregister_device as input_register_device itself
handles it and works as resource managed function.

To be compatible with the change, various gotos are replaced with direct
returns, and unneeded labels are dropped. With these changes remove
ad714x_remove and corresponding calls of it as they are now redundant.

Signed-off-by: Vaishali Thakkar <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: delete non-required instances of include <linux/init.h>

None of these files are actually using any __init type directives
and hence don't need to include <linux/init.h>. Most are just a
left

Input: delete non-required instances of include <linux/init.h>

None of these files are actually using any __init type directives
and hence don't need to include <linux/init.h>. Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.

Signed-off-by: Paul Gortmaker <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: use dev_get_platdata()

Use the wrapper function for retrieving the platform data instead
of accessing dev->platform_data directly. This is a cosmetic change
to make the code simpler and enhan

Input: use dev_get_platdata()

Use the wrapper function for retrieving the platform data instead
of accessing dev->platform_data directly. This is a cosmetic change
to make the code simpler and enhance the readability.

Signed-off-by: Jingoo Han <[email protected]>
Acked-by: Fugang Duan <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: request threaded-only IRQs with IRQF_ONESHOT

Since commit 1c6c69525b ("genirq: Reject bogus threaded irq requests")
threaded IRQs without a primary handler need to be requested with
IRQF_ONES

Input: request threaded-only IRQs with IRQF_ONESHOT

Since commit 1c6c69525b ("genirq: Reject bogus threaded irq requests")
threaded IRQs without a primary handler need to be requested with
IRQF_ONESHOT, otherwise the request will fail. This patch adds the
IRQF_ONESHOT to input drivers where it is missing. Not modified by
this patch are those drivers where the requested IRQ will always be a
nested IRQ (e.g. because it's part of an MFD), since for this special
case IRQF_ONESHOT is not required to be specified when requesting the
IRQ.

Signed-off-by: Lars-Peter Clausen <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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drivers/input: Add module.h to modular drivers implicitly using it

A pending cleanup will mean that module.h won't be implicitly
everywhere anymore. Make sure the modular drivers in input dir
are a

drivers/input: Add module.h to modular drivers implicitly using it

A pending cleanup will mean that module.h won't be implicitly
everywhere anymore. Make sure the modular drivers in input dir
are actually calling out for <module.h> explicitly in advance.

Signed-off-by: Paul Gortmaker <[email protected]>

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Input: ad714x - read the interrupt status registers in a row

The interrupt status registers should be read in row to avoid invalid data.

Alter "read" method for both bus options to allow reading se

Input: ad714x - read the interrupt status registers in a row

The interrupt status registers should be read in row to avoid invalid data.

Alter "read" method for both bus options to allow reading several registers
in a row and make sure we read interrupt status registers properly.

Read sequence saves 50% of bus transactions compared to single register
reads. So use it also for the result registers, which are also located
in a row.

Also update copyright notice.

Signed-off-by: Michael Hennerich <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: ad714x - use DMA-safe buffers for spi_write()

spi_write() requires use of DMA-safe (cacheline aligned) buffers.
Also use the same buffers when reading data since to avoid extra
locking and po

Input: ad714x - use DMA-safe buffers for spi_write()

spi_write() requires use of DMA-safe (cacheline aligned) buffers.
Also use the same buffers when reading data since to avoid extra
locking and potential memory allocation in spi_write_then_read().

Acked-by: Michael Hennerich <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: ad714x - fix captouch wheel option algorithm

As reported by Jean-Francois Dagenais, the wheel algorithm caused a
divide by zero exception due to missing variable pre-initialization.
In fact i

Input: ad714x - fix captouch wheel option algorithm

As reported by Jean-Francois Dagenais, the wheel algorithm caused a
divide by zero exception due to missing variable pre-initialization.
In fact it turned out that the whole algorithm had several problems.
It is therefore replaced with something that is known working.

Signed-off-by: Michael Hennerich <[email protected]>
Tested-by: Jean-Francois Dagenais <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: ad714x - allow platform code to specify irqflags

Add option to specify irqflags in platfrom data.
Also update copyright notice.

Signed-off-by: Michael Hennerich <[email protected]

Input: ad714x - allow platform code to specify irqflags

Add option to specify irqflags in platfrom data.
Also update copyright notice.

Signed-off-by: Michael Hennerich <[email protected]>
Tested-by: Jean-Francois Dagenais <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: ad714x - fix threshold and completion interrupt masks

Fix two issues in the threshold and completion interrupt mask and unmask
functions. According to the AD714x datasheets the highest stage

Input: ad714x - fix threshold and completion interrupt masks

Fix two issues in the threshold and completion interrupt mask and unmask
functions. According to the AD714x datasheets the highest stage completion
interrupt should be enabled. Fix mask computation.

Signed-off-by: Michael Hennerich <[email protected]>
Tested-by: Jean-Francois Dagenais <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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Input: ad714x - fix up input configuration

Add missing input name and set up parent devices so input devices will
show in proper places in sysfs tree.

Signed-off-by: Michael Hennerich <michael.henn

Input: ad714x - fix up input configuration

Add missing input name and set up parent devices so input devices will
show in proper places in sysfs tree.

Signed-off-by: Michael Hennerich <[email protected]>
Tested-by: Jean-Francois Dagenais <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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fix typos concerning "initiali[zs]e"

Signed-off-by: Uwe Kleine-König <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>

Input: ad714x - add support for the AD7143/8/7A parts

Signed-off-by: Barry Song <[email protected]>
Signed-off-by: Mike Frysinger <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

Input: add Analog Devices AD714x captouch input driver

AD7142 and AD7147 are integrated capacitance-to-digital converters
(CDCs) with on-chip environmental calibration for use in systems
requiring a

Input: add Analog Devices AD714x captouch input driver

AD7142 and AD7147 are integrated capacitance-to-digital converters
(CDCs) with on-chip environmental calibration for use in systems
requiring a novel user input method. The AD7142 and AD7147 can interface
to external capacitance sensors implementing functions such as buttons,
scrollwheels, sliders, touchpads and so on.

The chips don't restrict the specific usage. Depending on the hardware
connection, one special target board can include one or several these
components. The platform_data for the device's "struct device" holds
these information. The data-struct defined in head file descript the
hardware feature of button/scrollwheel/slider/touchpad components on
target boards, which need be filled in the arch/mach-/.

As the result, the driver is independent of boards. It gets the
components layout from the platform_data, registers related devices,
fullfills the algorithms and state machines for these components and
report related input events to up level.

Signed-off-by: Bryan Wu <[email protected]>
Signed-off-by: Michael Hennerich <[email protected]>
Signed-off-by: Barry Song <[email protected]>
Signed-off-by: Mike Frysinger <[email protected]>
Signed-off-by: Dmitry Torokhov <[email protected]>

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