linux.git/drivers/iio/magnetometer, branch v5.16

iio: magn: hmc5843: Make hmc5843_common_remove() return void

2021-10-19T07:30:45+00:00

Up to now hmc5843_common_remove() returns zero unconditionally. Make it
return void instead which makes it easier to see in the callers that
there is no error to handle.

Also the return value of i2c and spi remove callbacks is ignored anyway.

Signed-off-by: Uwe Kleine-König 
Reviewed-by: Alexandru Ardelean 
Link: https://lore.kernel.org/r/20211013203223.2694577-14-u.kleine-koenig@pengutronix.de
Signed-off-by: Jonathan Cameron

iio: magnetometer: ak8975: add AK09116 support

2021-09-14T11:00:33+00:00

Add additional AK09116 to the magnetometer driver which has the same
register mapping and scaling as the AK09112 device.

Signed-off-by: Matt Ranostay 
Link: https://lore.kernel.org/r/20210825020738.35877-1-matt.ranostay@konsulko.com
Signed-off-by: Jonathan Cameron

iio: st_sensors: remove reference to parent device object on st_sensor_data

2021-09-14T11:00:32+00:00

The idea behind it, is that all devm_ calls in ST sensors are bound to the
parent device object.

However, the reference to that object is kept on both the st_sensor_data
struct and the IIO object parent (indio_dev->dev.parent).

This change only adds a bit consistency and uses the reference stored on
indio_dev->dev.parent, to enforce the assumption that all ST sensors' devm_
calls are bound to the same reference as the one store on st_sensor_data.

Reviewed-by: Andy Shevchenko 
Signed-off-by: Alexandru Ardelean 
Reviewed-by: Linus Walleij 
Link: https://lore.kernel.org/r/20210823112204.243255-6-aardelean@deviqon.com
Signed-off-by: Jonathan Cameron

iio: st_sensors: remove all driver remove functions

2021-09-14T11:00:31+00:00

At this point all ST driver remove functions do iio_device_unregister().
This change removes them from them and replaces all iio_device_register()
with devm_iio_device_register().

This can be done in a single change relatively easy, since all these remove
functions are define in st_sensors.h.

Reviewed-by: Andy Shevchenko 
Signed-off-by: Alexandru Ardelean 
Reviewed-by: Linus Walleij 
Link: https://lore.kernel.org/r/20210823112204.243255-5-aardelean@deviqon.com
Signed-off-by: Jonathan Cameron

iio: st_sensors: remove st_sensors_power_disable() function

2021-09-14T11:00:31+00:00

This change converts the st_sensors_power_enable() function to use
devm_add_action_or_reset() handlers to register regulator_disable hooks for
when the drivers get unloaded.

The parent device of the IIO device object is used. This is based on the
assumption that all other devm_ calls in the ST sensors use this reference.

This makes the st_sensors_power_disable() un-needed.
Removing this also changes unload order a bit, as all ST drivers would call
st_sensors_power_disable() first and iio_device_unregister() after that.

Reviewed-by: Andy Shevchenko 
Signed-off-by: Alexandru Ardelean 
Reviewed-by: Linus Walleij 
Link: https://lore.kernel.org/r/20210823112204.243255-4-aardelean@deviqon.com
Signed-off-by: Jonathan Cameron

iio: st_sensors: remove st_sensors_deallocate_trigger() function

2021-09-14T11:00:31+00:00

This change converts the st_sensors_allocate_trigger() to use
device-managed functions.

The parent device of the IIO device object is used. This is based on the
assumption that all other devm_ calls in the ST sensors use this reference.

That makes the st_sensors_deallocate_trigger() function un-needed, so it
can be removed.

Reviewed-by: Andy Shevchenko 
Signed-off-by: Alexandru Ardelean 
Reviewed-by: Linus Walleij 
Link: https://lore.kernel.org/r/20210823112204.243255-3-aardelean@deviqon.com
Signed-off-by: Jonathan Cameron

iio: st_sensors: disable regulators after device unregistration

2021-09-14T11:00:31+00:00

Up until commit ea7e586bdd331 ("iio: st_sensors: move regulator retrieveal
to core") only the ST pressure driver seems to have had any regulator
disable. After that commit, the regulator handling was moved into the
common st_sensors logic.

In all instances of this regulator handling, the regulators were disabled
before unregistering the IIO device.
This can cause issues where the device would be powered down and still be
available to userspace, allowing it to send invalid/garbage data.

This change moves the st_sensors_power_disable() after the common probe
functions. These common probe functions also handle unregistering the IIO
device.

Fixes: 774487611c949 ("iio: pressure-core: st: Provide support for the Vdd power supply")
Fixes: ea7e586bdd331 ("iio: st_sensors: move regulator retrieveal to core")
Cc: Lee Jones 
Cc: Denis CIOCCA 
Reviewed-by: Linus Walleij 
Reviewed-by: Andy Shevchenko 
Signed-off-by: Alexandru Ardelean 
Link: https://lore.kernel.org/r/20210823112204.243255-2-aardelean@deviqon.com
Signed-off-by: Jonathan Cameron

iio: magn: st_magn: use devm_iio_triggered_buffer_setup() for buffer

2021-07-24T15:35:05+00:00

The st_magn_allocate_ring() function calls iio_triggered_buffer_setup() to
allocate a triggered buffer.

But the same can be done with devm_iio_triggered_buffer_setup() and then
the st_magn_common_remove() no longer needs to manually deallocate it.

We know that the parent of the IIO device is used to manage other instances
of the devm unwind, so it can be used in the st_magn_allocate_ring() as
well.

This change also removes some omitted st_magn_{probe,remove}_trigger()
inline hooks.

Signed-off-by: Alexandru Ardelean 
Link: https://lore.kernel.org/r/20210720074642.223293-3-aardelean@deviqon.com
Signed-off-by: Jonathan Cameron

iio: st-sensors: Remove some unused includes and add some that should be there

2021-07-24T14:59:00+00:00

The st-sensors drivers have changed in structure over time, and includes
have not always kept up with this.  Let's bring them back to nearer
the ideal.

Identified with the  include-what-you-use tool and careful checking of
its suggestions.

Note I haven't been particularly aggressive here, so this is just the
cases where the include obviously isn't needed rather than the more
subtle corners.

Note I took the opportunity to add mod_devicetable.h as I generally
prefer to see that when acpi or of match tables are present.

Signed-off-by: Jonathan Cameron 
Cc: Linus Walleij 
Cc: Denis Ciocca 
Cc: Hans de Goede 
Acked-by: Linus Walleij 
Link: https://lore.kernel.org/r/20210608175149.4019289-1-jic23@kernel.org

iio: hid-sensors: Update header includes

2021-06-16T13:53:13+00:00

General driver churn doesn't always include updates of header includes.
Manual review of the output of the include-what-you-use checker lead to the
following cleanup. Hopefuly this brings things back to a good state for the
hid-sensor drivers.

Signed-off-by: Jonathan Cameron 
Cc: Jiri Kosina 
Cc: Srinivas Pandruvada 
Acked-by: Srinivas Pandruvada 
Link: https://lore.kernel.org/r/20210608205510.4033887-1-jic23@kernel.org