linux-toradex.git/drivers/iio/inkern.c, branch v5.17-rc5

iio: inkern: introduce devm_iio_map_array_register() short-hand function

2021-10-19T07:27:34+00:00

This change introduces a device-managed variant to the
iio_map_array_register() function. It's a simple implementation of calling
iio_map_array_register() and registering a callback to
iio_map_array_unregister() with the devm_add_action_or_reset().

The function uses an explicit 'dev' parameter to bind the unwinding to. It
could have been implemented to implicitly use the parent of the IIO device,
however it shouldn't be too expensive to callers to just specify to which
device object to bind this unwind call.
It would make the API a bit more flexible.

Signed-off-by: Alexandru Ardelean 
Link: https://lore.kernel.org/r/20210903072917.45769-2-aardelean@deviqon.com
Signed-off-by: Jonathan Cameron

iio: core: move @info_exist_lock to struct iio_dev_opaque

2021-05-17T12:49:13+00:00

This lock is only of interest to the IIO core, so make it only
visible there.

Signed-off-by: Jonathan Cameron 
Reviewed-by: Alexandru Ardelean 
Link: https://lore.kernel.org/r/20210426174911.397061-7-jic23@kernel.org

iio: inkern: simplify some devm functions

2021-05-17T12:49:07+00:00

Use devm_add_action_or_reset() instead of devres_alloc() and
devres_add(), which works the same. This will simplify the
code. There is no functional changes.

Signed-off-by: Yicong Yang 
Reviewed-by: Lars-Peter Clausen 
Reviewed-by: Nuno Sa 
Reviewed-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/1617881896-3164-8-git-send-email-yangyicong@hisilicon.com
Signed-off-by: Jonathan Cameron

iio: Fix iio_read_channel_processed_scale()

2021-04-07T07:35:51+00:00

The code was checking if (ret) from the processed
channel readout, not smart, we need to check if (ret < 0)
as this will likely be something like IIO_VAL_INT.

Fixes: 635ef601b238 ("iio: Provide iio_read_channel_processed_scale() API")
Signed-off-by: Linus Walleij 
Link: https://lore.kernel.org/r/20210323122705.1326362-1-linus.walleij@linaro.org
Signed-off-by: Jonathan Cameron

iio: Provide iio_read_channel_processed_scale() API

2021-03-25T19:13:51+00:00

Since the old iio_read_channel_processed() would
lose precision if we fall back to reading raw and
scaling, we introduce a new API that will pass in
a scale factor when reading a processed channel:
iio_read_channel_processed_scale().

Refactor iio_read_channel_processed() as a special
case with scale factor 1.

Cc: Peter Rosin 
Cc: Chris Lesiak 
Cc: Jonathan Cameron 
Cc: linux-iio@vger.kernel.org
Link: https://lore.kernel.org/linux-iio/20201224011607.1059534-1-linus.walleij@linaro.org/
Signed-off-by: Linus Walleij 
Link: https://lore.kernel.org/r/20210308100219.2732156-1-linus.walleij@linaro.org
Signed-off-by: Jonathan Cameron

iio: provide of_iio_channel_get_by_name() and devm_ version it

2021-01-16T18:27:51+00:00

There might be cases when the IIO channel is attached to the device
subnode instead of being attached to the main device node. Allow drivers
to query IIO channels by using device tree nodes.

Signed-off-by: Dmitry Baryshkov 
Link: https://lore.kernel.org/r/20201204025509.1075506-8-dmitry.baryshkov@linaro.org
Signed-off-by: Jonathan Cameron

io:core: In iio_map_array_register() cleanup in case of error

2020-12-03T19:40:25+00:00

In function iio_map_array_register() properly rewind in case of error.

Signed-off-by: Lino Sanfilippo 
Reviewed-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/1606571059-13974-2-git-send-email-LinoSanfilippo@gmx.de
Signed-off-by: Jonathan Cameron

iio:core: Introduce unlocked version of iio_map_array_unregister()

2020-12-03T19:40:25+00:00

Introduce an unlocked version of iio_map_array_unregister(). This function
can help to unwind in case of error while the iio_map_list_lock mutex is
held.

Signed-off-by: Lino Sanfilippo 
Reviewed-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/1606571059-13974-1-git-send-email-LinoSanfilippo@gmx.de
Signed-off-by: Jonathan Cameron

iio: inkern: drop devm_iio_channel_release{_all} API calls

2020-04-19T15:56:37+00:00

It's unused so far, so it can be removed. Also makes sense to remove it
to discourage weird uses of this call during review.

Signed-off-by: Alexandru Ardelean 
Signed-off-by: Jonathan Cameron

Merge tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

2019-07-12T19:24:03+00:00

Pull driver core and debugfs updates from Greg KH:
 "Here is the "big" driver core and debugfs changes for 5.3-rc1

  It's a lot of different patches, all across the tree due to some api
  changes and lots of debugfs cleanups.

  Other than the debugfs cleanups, in this set of changes we have:

   - bus iteration function cleanups

   - scripts/get_abi.pl tool to display and parse Documentation/ABI
     entries in a simple way

   - cleanups to Documenatation/ABI/ entries to make them parse easier
     due to typos and other minor things

   - default_attrs use for some ktype users

   - driver model documentation file conversions to .rst

   - compressed firmware file loading

   - deferred probe fixes

  All of these have been in linux-next for a while, with a bunch of
  merge issues that Stephen has been patient with me for"

* tag 'driver-core-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (102 commits)
  debugfs: make error message a bit more verbose
  orangefs: fix build warning from debugfs cleanup patch
  ubifs: fix build warning after debugfs cleanup patch
  driver: core: Allow subsystems to continue deferring probe
  drivers: base: cacheinfo: Ensure cpu hotplug work is done before Intel RDT
  arch_topology: Remove error messages on out-of-memory conditions
  lib: notifier-error-inject: no need to check return value of debugfs_create functions
  swiotlb: no need to check return value of debugfs_create functions
  ceph: no need to check return value of debugfs_create functions
  sunrpc: no need to check return value of debugfs_create functions
  ubifs: no need to check return value of debugfs_create functions
  orangefs: no need to check return value of debugfs_create functions
  nfsd: no need to check return value of debugfs_create functions
  lib: 842: no need to check return value of debugfs_create functions
  debugfs: provide pr_fmt() macro
  debugfs: log errors when something goes wrong
  drivers: s390/cio: Fix compilation warning about const qualifiers
  drivers: Add generic helper to match by of_node
  driver_find_device: Unify the match function with class_find_device()
  bus_find_device: Unify the match callback with class_find_device
  ...