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Alexandru Ardelean
789976accb iio: adc: at91-sama5d2_adc: merge buffer & trigger init into a function 
This change is mostly cosmetic, but it's also a pre-cursor to the
the change for 'iio_buffer_set_attrs()', where the helper gets updated to
better support multiple IIO buffers for 1 IIO device.

The only functional change is that the error message for the trigger alloc
failure is bound to the parent device vs the IIO device object.

Also, the new at91_adc_buffer_and_trigger_init() function was moved after
the definition of the 'at91_adc_fifo_attributes'.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20200929125949.69934-3-alexandru.ardelean@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2020-11-21 14:53:03 +00:00
Alexandru Ardelean
5e6dc43e2c iio: buffer: dmaengine: unwrap the use of iio_buffer_set_attrs() 
The iio_buffer_set_attrs() helper will be removed in this series. So, just
assign the attributes of the DMAEngine buffer logic directly.

This is IIO buffer core context, so there is direct access to the
buffer->attrs object.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20200929125949.69934-2-alexandru.ardelean@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2020-11-21 14:52:57 +00:00
Jonathan Cameron
ee4fb4c079 dt-bindings:iio:accel:domintech,dmard06: Move to trivial-devices.yaml 
No need to maintain a separate document for such a simple binding.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201031182922.743153-8-jic23@kernel.org
 2020-11-16 20:34:55 +00:00
Jonathan Cameron
184a99de93 dt-bindings:iio:magnetometer:memsic,mmc35240: move to trivial-devices.yaml 
Extremely simple binding so no need to maintain a separate file.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Jandy Gou <qingsong.gou@ck-telecom.com>
Link: https://lore.kernel.org/r/20201031182922.743153-7-jic23@kernel.org
 2020-11-16 20:33:37 +00:00
Jonathan Cameron
76e11a05d2 dt-bindings:iio:light:renesas,isl29501: Move to trivial devices. 
This binding is so simple there is no obvious advantage in maintaining
a separate binding doc file for it. As such, move it to trivial-devices.yaml

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Simon Horman <horms+renesas@verge.net.au>
Link: https://lore.kernel.org/r/20201031182922.743153-6-jic23@kernel.org
 2020-11-16 20:32:33 +00:00
Jonathan Cameron
b25e67b290 dt-bindings:iio:potentiometer:maxim,max5481 move to trivial devices 
Simple SPI binding that doesn't need a separate file.
During conversion I looked up the individual part number descriptions
in the datasheet so that we could give slightly more detail in
trivial-device.yaml.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Slawomir Stepien <sst@poczta.fm>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Maury Anderson <maury.anderson@rockwellcollins.com>
Cc: Matthew Weber <matthew.weber@rockwellcollins.com>
Cc: Slawomir Stepien <sst@poczta.fm>
Link: https://lore.kernel.org/r/20201031182922.743153-5-jic23@kernel.org
 2020-11-16 20:31:25 +00:00
Jonathan Cameron
6d3766da16 dt-bindings:iio:potentiometer:maxim,ds1803 move to trivial devices. 
Simple binding where there is no obvious benefit in maintaining a
separate file.  Hence document in trivial-devices.yaml and drop
the txt file.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Slawomir Stepien <sst@poczta.fm>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Slawomir Stepien <sst@poczta.fm>
Link: https://lore.kernel.org/r/20201031182922.743153-4-jic23@kernel.org
 2020-11-16 20:29:51 +00:00
Jonathan Cameron
9bd4ede748 dt-bindings:iio:chemical:bosch,bme680: Move to trivial devices 
Very simple binding so no need to maintain a separate file.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Sebastien Bourdelin <sebastien.bourdelin@gmail.com>
Cc: Himanshu Jha <himanshujha199640@gmail.com>
Link: https://lore.kernel.org/r/20201031182922.743153-3-jic23@kernel.org
 2020-11-16 20:27:56 +00:00
Jonathan Cameron
c59c1bf744 dt-bindings:iio:chemical:sensirion,sgp30: Move to trivial-bindings.yaml 
The binding for this device and the sgpc3 is very simple so lets
not maintain a seperate document for this one.  Of course we can
always add a document again if the binding becomes more complex in
future.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Andreas Brauchli <andreas.brauchli@sensirion.com>
Link: https://lore.kernel.org/r/20201031182922.743153-2-jic23@kernel.org
 2020-11-16 20:25:47 +00:00
Jonathan Cameron
2cba117073 dt-bindings:iio:temperature:ti,tmp07 yaml conversion 
Simple conversion from txt to yaml.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://lore.kernel.org/r/20201031134110.724233-30-jic23@kernel.org
 2020-11-16 20:16:01 +00:00
Jonathan Cameron
29a702dcf4 dt-bindings:iio:temperature:maxim_thermocouple.txt to maxim,max31855k.yaml 
Given we already have another maxim thermocouple driver that isn't
covered by this binding it seems a better idea to chose to name it
after a specific part.

I added an additional example for the maxim,max6755 to illustrate
the need for spi-cpha for that part.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Matt Ranostay <matt.ranostay@konsulko.com>
Link: https://lore.kernel.org/r/20201031134110.724233-29-jic23@kernel.org
 2020-11-16 20:14:42 +00:00
Jonathan Cameron
17d1ffdfb6 dt-bindings:iio:temperature:maxim,max31856 yaml conversion. 
Simple txt to yaml conversion of this binding.
Paresh Chaudhary's email is bouncing so for now I've listed
myself as maintainer.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201031134110.724233-28-jic23@kernel.org
 2020-11-16 20:13:08 +00:00
Jonathan Cameron
93f8dd3b8a dt-bindings:iio:temperature:meas,tsys01 move to trivial-devices.yaml 
The existing binding description brings little value and the similar
meas,* parts are in trivial-devices.yaml so move this one there
to join them.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20201031134110.724233-27-jic23@kernel.org
 2020-11-16 20:12:37 +00:00
Jonathan Cameron
92af0fb2d4 dt-bindings:iio:temperature:melexis,mlx90632 conversion to yaml 
Technically this could have gone in trivial-devices.yaml, but I have
kept it as a separate binding due to the detailed additional description
from the text file.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Crt Mori <cmo@melexis.com>
Cc: Crt Mori <cmo@melexis.com>
Link: https://lore.kernel.org/r/20201031134110.724233-26-jic23@kernel.org
 2020-11-16 20:11:26 +00:00
Jonathan Cameron
39616b4e4a dt-bindings:iio:temperature:melexis,mlx90614 yaml conversion 
Simple conversion from txt to yaml.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Crt Mori <cmo@melexis.com>
Cc: Peter Meerwald <pmeerw@pmeerw.net>
Link: https://lore.kernel.org/r/20201031134110.724233-25-jic23@kernel.org
 2020-11-16 20:09:03 +00:00
Jonathan Cameron
1e6536ee34 dt-bindings:iio:dac:adi,ad5758 yaml conversion 
I have put Michael as maintainer on this one. Happy to change it to
someone else though.

One issue in here, is I cannot have an example with a negative
limit on the range.  There are very few such yaml bindings in existence
but the thermal-zones.yaml has the same problem.  If there is
any means of fixing this let me know.  For now I'm sticking to
positive range values in the example.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Michael Hennerich <Michael.Hennerich@analog.com>
Link: https://lore.kernel.org/r/20201031134110.724233-24-jic23@kernel.org
 2020-11-16 20:06:23 +00:00
Jonathan Cameron
c15058d5fb dt-bindings:iio:dac:nxp,lpc1850-dac yaml conversion. 
Very similar binding to that for the ADC on the same device.
Conversion from txt to yaml format.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Link: https://lore.kernel.org/r/20201031134110.724233-23-jic23@kernel.org
 2020-11-16 20:03:05 +00:00
Jonathan Cameron
9de14fa28d dt-bindings:iio:dac:maxim,max5821 yaml conversion 
Simple txt to yaml conversion for this binding description.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Philippe Reynes <tremyfr@yahoo.fr>
Link: https://lore.kernel.org/r/20201031134110.724233-22-jic23@kernel.org
 2020-11-16 20:01:32 +00:00
Jonathan Cameron
6ced946a4b dt-bindings:iio:dac:microchip,mcp4725 yaml conversion 
I'm not sure vdd-supply absolutely has to be provided if vref-supply
is, but as the previous binding docs stated it was required it seems
reasonable to leave it as such.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Tomas Novotny <tomas@novotny.cz>
Link: https://lore.kernel.org/r/20201031134110.724233-21-jic23@kernel.org
 2020-11-16 19:59:54 +00:00
Jonathan Cameron
87b8092e6b dt-bindings:iio:dac:fsl,vf610-dac yaml conversion 
Simple binding to convert.  Example expanded a little to include
an example bus.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Sanchayan Maity <maitysanchayan@gmail.com>
Link: https://lore.kernel.org/r/20201031134110.724233-20-jic23@kernel.org
 2020-11-16 19:58:08 +00:00
Jonathan Cameron
e0d8ef7d2f dt-bindings:iio:dac:maxim,ds4424 yaml conversion 
Simple conversion of this straight forward binding.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Ismail H. Kose <ihkose@gmail.com>
Link: https://lore.kernel.org/r/20201031134110.724233-19-jic23@kernel.org
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2020-11-16 19:56:20 +00:00
Jonathan Cameron
6918ed88bf dt-bindings:iio:dac:adi,ad7303 yaml conversion 
Converted to maintain the requirement for Vdd-supply as per original file.
It is possible we could relax this requirement to make it at least one
of Vdd-supply and REF-supply.  We need to establish the scaling of the
output channel and if REF-supply is provided that is used instead of
Vdd-supply, hence I cannot see why a dummy regulator cannot be used for
Vdd-supply if this happens.

For now, let us keep it simple.

Drop adi,use-external-reference from binding example as no such binding
exists.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Lars-Peter Clausen <lars@metafoo.de>
Link: https://lore.kernel.org/r/20201031134110.724233-18-jic23@kernel.org
 2020-11-16 19:54:57 +00:00
Jonathan Cameron
8b74e06b0f dt-bindings:iio:dac:ti,dac7612 yaml conversion 
Simple conversion from txt to yaml.  No significant adjustments.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Ricardo Ribalda Delgado <ricardo@ribalda.com>
Link: https://lore.kernel.org/r/20201031134110.724233-16-jic23@kernel.org
 2020-11-16 19:54:09 +00:00
Jonathan Cameron
5034ceaff5 dt-bindings:iio:dac:ti,dac7512 yaml conversion 
This one is a bit interesting because the binding was moved from
misc a while back, but the linux support for this device is
provided via the ad5446 DAC driver which doesn't currently
have a binding.

For now, lets just convert this file over, but we may want to
think about consolidating this with proper documentation of
the bindings for the other parts supported by the ad5446 driver.

As Daniel Mack does not seem to have been active since 2015,
I've put myself as maintainer of this binding for now.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201031134110.724233-15-jic23@kernel.org
 2020-11-16 19:54:08 +00:00
Jonathan Cameron
b120365fa6 dt-bindings:iio:dac:ti,dac7311 yaml conversion 
Very simple conversion of this binding from txt to yaml.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Charles-Antoine Couret <charles-antoine.couret@essensium.com>
Link: https://lore.kernel.org/r/20201031134110.724233-14-jic23@kernel.org
 2020-11-16 19:54:08 +00:00
Jonathan Cameron
3eccfe575e dt-bindings:iio:dac:ti,dac5571 yaml conversion. 
A few tweaks in this conversion.
* The example didn't have the I2C address of 4C in the node name so
  fixed that.
* The reference voltage in the txt file is an optional binding, but
  the driver is making use of it to provide the scaling of the output
  channels.  As such I have made it required going forwards.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201031134110.724233-13-jic23@kernel.org
 2020-11-16 19:54:02 +00:00
Jonathan Cameron
d08a718742 dt-bindings:iio:proximity:ams,as3935 yaml conversion 
A straight forward conversion of this binding. I have added
a maximum SPI frequency from the datasheet.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Matt Ranostay <matt.ranostay@konsulko.com>
Link: https://lore.kernel.org/r/20201031134110.724233-12-jic23@kernel.org
 2020-11-16 19:17:20 +00:00
Jonathan Cameron
b4be8bd1c6 dt-bindings:iio:proximity:st,vl53l0x yaml conversion 
Straight forward conversion from txt to yaml.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Song Qiang <songqiang1304521@gmail.com>
Link: https://lore.kernel.org/r/20201031134110.724233-11-jic23@kernel.org
 2020-11-16 19:15:47 +00:00
Jonathan Cameron
7fd5da368e dt-bindings:iio:proximity:semtech,sx9500 yaml conversion. 
Simple conversion.  There hasn't been much activity around this driver
for a long time and I don't think I have any up to date contact details
for the original authors.  As such, I've listed myself as the binding
maintainer.  More than happy to hand it off to someone more relevant though!

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201031134110.724233-10-jic23@kernel.org
 2020-11-16 19:14:22 +00:00
Jonathan Cameron
1517c6a30c dt-bindings:iio:pressure:hoperf,hp03 yaml conversion 
One quirk in the txt file was that the xclr gpio was specified as
xclr-gpio rather than xclr-gpios. I've fixed that in the
yaml version.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Marek Vasut <marex@denx.de>
Link: https://lore.kernel.org/r/20201031134110.724233-9-jic23@kernel.org
 2020-11-16 19:12:47 +00:00
Jonathan Cameron
b1b69ba70d dt-bindings:iio:pressure:meas,ms5611 yaml conversion. 
One addition here was to put in a 20MHz maximum for the SPI bus
as specified in the datasheets of both support parts.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Tomasz Duszynski <tduszyns@gmail.com>
Link: https://lore.kernel.org/r/20201031134110.724233-8-jic23@kernel.org
 2020-11-16 19:11:28 +00:00
Jonathan Cameron
1cf4ad3f60 dt-bindings:iio:pressure:murata,zpa2326 yaml conversion 
Simple conversion with a few minor tweaks:
* I added 1MHz max for spi-max-frequency
* I have give myself as the maintainer.  This driver was written by
  Gregor Boirie but I don't have an up to date email address for Gregor.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201031134110.724233-7-jic23@kernel.org
 2020-11-16 19:10:01 +00:00
Jonathan Cameron
88b4485023 dt-bindings:iio:pressure:ms5637 Drop separate doc + add to trivial-devices 
Very simple binding for this i2c device with no properties beyond
reg and compatible.  Hence doesn't need it's own document.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201031134110.724233-6-jic23@kernel.org
 2020-11-16 19:08:51 +00:00
Jonathan Cameron
4dd49a1b9b dt-bindings:iio:humidity:dht11 yaml conversion 
The conversion is straight forward, but leaves an open question.
The compatible for this device has never had a vendor.

Harald Geyer has identified as probably being made by aosong,
but we have no current match to any of their more specific part
numbers.  As such, this is noted in the file but the
compatible doesn't include the vendor prefix.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-By: Harald Geyer <harald@ccbib.org>
Link: https://lore.kernel.org/r/20201031134110.724233-5-jic23@kernel.org
 2020-11-16 19:07:21 +00:00
Jonathan Cameron
9a6ac31382 dt-bindings:iio:humidity:st,hts221 yaml conversion. 
Straight forward conversion of this temperature and pressure sensor binding.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Cc: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/20201031134110.724233-4-jic23@kernel.org
 2020-11-16 19:05:14 +00:00
Jonathan Cameron
3c055f31ac dt-bindings:iio:humidity:htu21 Drop separate doc + add to trivial-devices 
Very simple binding for this i2c device with no properties beyond
reg and compatible.  Hence doesn't need it's own document.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20201031134110.724233-3-jic23@kernel.org
 2020-11-16 19:04:28 +00:00
Jonathan Cameron
126df08e54 dt-bindings:iio:humidity:hdc100x Drop separate doc + add to trivial-devices 
Very simple binding for this i2c device with no properties beyond
reg and compatible.  Hence doesn't need it's own document.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Matt Ranostay <matt.ranostay@konsulko.com>
Link: https://lore.kernel.org/r/20201031134110.724233-2-jic23@kernel.org
 2020-11-16 19:01:45 +00:00
Alexandru Ardelean
24b284984e iio: adc: ad7887: convert probe to device-managed functions 
This is conversion of the driver to use device-managed functions.
The IIO registration and triggered buffer setup both have device-managed
versions.
The regulator disable needs to be handled via an action_or_reset handler.

With these changes, the remove hook is removed, and the error path is
cleaned up in probe.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20201113091648.148589-1-alexandru.ardelean@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2020-11-14 16:44:59 +00:00
Fabrice Gasnier
89d1f72570 iio: adc: stm32-adc: adapt clock duty cycle for proper operation 
For proper operation, STM32 ADC should be used with a clock duty cycle
of 50%, in the range of 49% to 51%. Depending on the clock tree, divider
can be used in case clock duty cycle is out of this range.
In case clk_get_scaled_duty_cycle() returns an error, kindly apply a
divider by default (don't make the probe fail).

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Link: https://lore.kernel.org/r/1604681846-31234-1-git-send-email-fabrice.gasnier@st.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2020-11-14 15:51:13 +00:00
Alexandru Ardelean
8dedcc3eee iio: core: centralize ioctl() calls to the main chardev 
The aim of this is to improve a bit the organization of ioctl() calls in
IIO core. Currently the chardev is split across IIO core sub-modules/files.
The main chardev has to be able to handle ioctl() calls, and if we need to
add buffer ioctl() calls, this would complicate things.

The 'industrialio-core.c' file will provide a 'iio_device_ioctl()' which
will iterate over a list of ioctls registered with the IIO device. These
can be event ioctl() or buffer ioctl() calls, or something else.

Each ioctl() handler will have to return a IIO_IOCTL_UNHANDLED code (which
is positive 1), if the ioctl() did not handle the call in any. This
eliminates any potential ambiguities about negative error codes, which
should fail the call altogether.

If any ioctl() returns 0, it was considered that it was serviced
successfully and the loop will exit.

This change also moves the handling of the IIO_GET_EVENT_FD_IOCTL command
inside 'industrialio-event.c', where this is better suited.

This patch is a combination of 2 other patches from an older series:
Patch 1: iio: core: add simple centralized mechanism for ioctl() handlers
  Link: https://lore.kernel.org/linux-iio/20200427131100.50845-6-alexandru.ardelean@analog.com/
Patch 2: iio: core: use new common ioctl() mechanism
  Link: https://lore.kernel.org/linux-iio/20200427131100.50845-7-alexandru.ardelean@analog.com/

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20200924084155.99406-1-alexandru.ardelean@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2020-11-14 15:31:25 +00:00
Gene Chen
1f4877218f iio: adc: mt6360: Add ADC driver for MT6360 
Add MT6360 ADC driver including Charger Current, Voltage, and
Temperature.

Signed-off-by: Gene Chen <gene_chen@richtek.com>
Link: https://lore.kernel.org/r/1603181267-15610-4-git-send-email-gene.chen.richtek@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2020-11-08 16:20:18 +00:00
Gene Chen
d4686c52a2 Documentation: ABI: testing: mt6360: Add ADC sysfs guideline 
Add ABI documentation for mt6360 ADC sysfs interfaces.

Signed-off-by: Gene Chen <gene_chen@richtek.com>
Link: https://lore.kernel.org/r/1603181267-15610-3-git-send-email-gene.chen.richtek@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2020-11-08 16:20:18 +00:00
Gene Chen
396cd5092c dt-bindings: iio: adc: add bindings doc for MT6360 ADC 
This change adds the binding doc for the MT6360 ADC.

Signed-off-by: Gene Chen <gene_chen@richtek.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1603181267-15610-2-git-send-email-gene.chen.richtek@gmail.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2020-11-08 16:19:31 +00:00
Olivier Moysan
499da8bdb8 iio: adc: stm32-adc: dma transfers cleanup 
- Remove processing related to DMA in irq handler as this
data transfer is managed directly in DMA callback.
- Update comment in stm32_adc_set_watermark() function.

Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Reviewed-by: Fabrice Gasnier <fabrice.gasnier@st.com>
Link: https://lore.kernel.org/r/20201105142941.27301-1-olivier.moysan@st.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2020-11-08 16:07:40 +00:00
Cristian Pop
7f79711533 dt-bindings:iio:adc:adc.txt: Add documentation for channel label attribute 
Optional attribute for better identification of the channels.

Signed-off-by: Cristian Pop <cristian.pop@analog.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200928090959.88842-5-cristian.pop@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2020-11-08 16:07:40 +00:00
Cristian Pop
7d4156ddf1 dt-bindings:iio:adc:adi,ad7768-1: Add documentation for channel label 
Optional attribute for better identification of the channels.

Signed-off-by: Cristian Pop <cristian.pop@analog.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200928090959.88842-4-cristian.pop@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2020-11-08 16:07:39 +00:00
Cristian Pop
75ed0be720 iio: adc: ad7768-1: Add channel labels. 
For better identification of the channels.

Signed-off-by: Cristian Pop <cristian.pop@analog.com>
Link: https://lore.kernel.org/r/20200928090959.88842-3-cristian.pop@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2020-11-08 16:07:39 +00:00
Cristian Pop
3079188f82 iio:Documentation: Add documentation for label channel attribute 
If a label is defined for this channel add that to the channel specific
attributes. This is useful for userspace to be able to identify an
individual channel.

Signed-off-by: Cristian Pop <cristian.pop@analog.com>
Link: https://lore.kernel.org/r/20200928090959.88842-2-cristian.pop@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2020-11-08 16:07:39 +00:00
Cristian Pop
1d4ef9b39e iio: core: Add optional symbolic label to a device channel 
If a label is defined in the device tree for this channel add that
to the channel specific attributes. This is useful for userspace to
be able to identify an individual channel.

Signed-off-by: Cristian Pop <cristian.pop@analog.com>
Link: https://lore.kernel.org/r/20200928090959.88842-1-cristian.pop@analog.com
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2020-11-08 16:07:39 +00:00
Jonathan Neuschäfer
397f45ed26 MAINTAINERS: Fix 'W:' prefix in Invensense IMU entry 
The colon is missing, which can confuse scripts/parse-maintainers.pl.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Link: https://lore.kernel.org/r/20201108013738.1410528-1-j.neuschaefer@gmx.net
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
 2020-11-08 15:01:35 +00:00