linux-toradex.git/drivers/iio/adc/ad4130.c, branch v6.7

iio: ad4310: Replace devm_clk_register() with devm_clk_hw_register()

2023-09-13T19:13:54+00:00

The devm_clk_register() is deprecated and devm_clk_hw_register() should be
used as a replacement.

Switching to the clk_hw interface also allows to use the built-in device
managed version of registering the clock provider. The non-clk_hw interface
does not have a device managed version.

Signed-off-by: Lars-Peter Clausen 
Reviewed-by: Nuno Sa 
Link: https://lore.kernel.org/r/20230910140903.551081-1-lars@metafoo.de
Signed-off-by: Jonathan Cameron

iio: ad4130: Make sure clock provider gets removed

2023-05-13T16:54:57+00:00

The ad4130 driver registers a clock provider, but never removes it. This
leaves a stale clock provider behind that references freed clocks when the
device is unbound.

Register a managed action to remove the clock provider when the device is
removed.

Fixes: 62094060cf3a ("iio: adc: ad4130: add AD4130 driver")
Signed-off-by: Lars-Peter Clausen 
Link: https://lore.kernel.org/r/20230414150702.518441-1-lars@metafoo.de
Cc: 
Signed-off-by: Jonathan Cameron

iio: Don't silently expect attribute types

2022-11-23T19:44:04+00:00

The iio_triggered_buffer_setup_ext() and the
devm_iio_kfifo_buffer_setup_ext() were changed by
commit 15097c7a1adc ("iio: buffer: wrap all buffer attributes into iio_dev_attr")
to silently expect that all attributes given in buffer_attrs array are
device-attributes. This expectation was not forced by the API - and some
drivers did register attributes created by IIO_CONST_ATTR().

When using IIO_CONST_ATTRs the added attribute "wrapping" does not copy
the pointer to stored string constant and when the sysfs file is read the
kernel will access to invalid location.

Change the function signatures to expect an array of iio_dev_attrs to
avoid similar errors in the future.

Merge conflict resolved whilst applying due to patch crossing with
two new drivers (kx022a accelerometer and ad4130 ADC).

Signed-off-by: Matti Vaittinen 
Tested-by: Claudiu Beznea 
Link: https://lore.kernel.org/r/63f54787a684eb1232f1c5d275a09c786987fe4a.1664782676.git.mazziesaccount@gmail.com
Signed-off-by: Jonathan Cameron

iio: adc: ad4130: Fix spelling mistake "diffreential" -> "differential"

2022-11-23T19:44:03+00:00

There is a spelling mistake in an error message. Fix it.

Signed-off-by: Colin Ian King 
Link: https://lore.kernel.org/r/20221104093148.167765-1-colin.i.king@gmail.com
Signed-off-by: Jonathan Cameron

iio: adc: ad4130: add AD4130 driver

2022-11-23T19:44:01+00:00

AD4130-8 is an ultra-low power, high precision, measurement solution for
low bandwidth battery operated applications.

The fully integrated AFE (Analog Front-End) includes a multiplexer for up
to 16 single-ended or 8 differential inputs, PGA (Programmable Gain
Amplifier), 24-bit Sigma-Delta ADC, on-chip reference and oscillator,
selectable filter options, smart sequencer, sensor biasing and excitation
options, diagnostics, and a FIFO buffer.

Signed-off-by: Cosmin Tanislav 
Reviewed-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20221021104115.1812486-3-demonsingur@gmail.com
Signed-off-by: Jonathan Cameron