kernel/linux.git/drivers/iio/test, branch v6.12.80

iio: test: drop dangling symbol in gain-time-scale helpers

2026-03-04T12:20:29+00:00

[ Upstream commit d63d868b312478523670b76007dcc5eaedc3ee07 ] The code for this never went upstream. It was replaced by other code, so this should be dropped. Link: https://bugzilla.kernel.org/show_bug.cgi?id=216748 Fixes: cf996f039679 ("iio: test: test gain-time-scale helpers") Signed-off-by: Randy Dunlap Signed-off-by: Jonathan Cameron Signed-off-by: Sasha Levin

iio: test: gts: test available times and gains sorting

2024-05-27T08:48:56+00:00

The iio_gts helpers build available times and scales tables based on the times and gains arrays given from the driver. The driver should be able to list all valid register values so that conversion from register valu to correct gain/time works for all supported register values. It might be more convenient for drivers to list these times and gains in the order where they're listed in the data-sheet than ascending order. However, for user who requests the supported scales / times it is more convenient to get the results in asscending order. Also, listing duplicated values is not meaning for the user. Hence the GTS heler should do sorting and deduplication of the scales and times when it builds the tables listing the available times/scales. Note, currently duplicated gain values aren't handled by GTS-helpers. Unsort the gain and time arrays in the test code, and add duplicates to time array in order to test the sorting and deduplicating works. Signed-off-by: Matti Vaittinen Link: https://lore.kernel.org/r/365cc6de3c17a457db738f5fdf8dd3bd6f50d5f2.1714480171.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron

iio: test: test gain-time-scale helpers

2024-02-17T16:16:09+00:00

Some light sensors can adjust both the HW-gain and integration time. There are cases where adjusting the integration time has similar impact to the scale of the reported values as gain setting has. IIO users do typically expect to handle scale by a single writable 'scale' entry. Driver should then adjust the gain/time accordingly. It however is difficult for a driver to know whether it should change gain or integration time to meet the requested scale. Usually it is preferred to have longer integration time which usually improves accuracy, but there may be use-cases where long measurement times can be an issue. Thus it can be preferable to allow also changing the integration time - but mitigate the scale impact by also changing the gain underneath. Eg, if integration time change doubles the measured values, the driver can reduce the HW-gain to half. The theory of the computations of gain-time-scale is simple. However, some people (undersigned) got that implemented wrong for more than once. Hence some gain-time-scale helpers were introduced. Add some simple tests to verify the most hairy functions. Signed-off-by: Matti Vaittinen Link: https://lore.kernel.org/r/0f7505b43f91394dc3bb636369489c897b7e01a7.1705328293.git.mazziesaccount@gmail.com Signed-off-by: Jonathan Cameron

iio: test: Mark file local structure arrays static.

2022-08-15T21:30:01+00:00

Warning cleanup: drivers/iio/test/iio-test-rescale.c:32:30: warning: symbol 'scale_cases' was not declared. Should it be static? drivers/iio/test/iio-test-rescale.c:480:30: warning: symbol 'offset_cases' was not declared. Should it be static? Signed-off-by: Jonathan Cameron Cc: Liam Beguin Reviewed-by: Liam Beguin Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220807145457.646062-2-jic23@kernel.org

iio: test: rework Kconfig to support modules

2022-07-16T18:03:41+00:00

Rework the IIO test Kconfig to support building KUnit tests as modules. This lets users execute tests at runtime in addition to the usual tools/testing/kunit/kunit.py script. Signed-off-by: Liam Beguin Link: https://lore.kernel.org/r/20220710013109.3349104-6-liambeguin@gmail.com Signed-off-by: Jonathan Cameron

iio: afe: rescale: export symbols used during testing

2022-07-16T18:01:14+00:00

In preparation for module support, export symbols use during testing. Signed-off-by: Liam Beguin Link: https://lore.kernel.org/r/20220710013109.3349104-5-liambeguin@gmail.com Signed-off-by: Jonathan Cameron

iio: test: format: follow CONFIG_ naming convention

2022-07-16T18:01:14+00:00

The KUnit documentation indicates that all KUnit Kconfig entries must match CONFIG__KUNIT_TEST: where is the name of the test suite. Rename the IIO_TEST_FORMAT configuration accordingly. Signed-off-by: Liam Beguin Link: https://lore.kernel.org/r/20220710013109.3349104-4-liambeguin@gmail.com Signed-off-by: Jonathan Cameron

iio: test: format: add MODULE_* information

2022-07-16T18:01:14+00:00

In preparation for module support, add missing MODULE_* information. Signed-off-by: Liam Beguin Link: https://lore.kernel.org/r/20220710013109.3349104-3-liambeguin@gmail.com Signed-off-by: Jonathan Cameron

iio: test: rescale: add MODULE_* information

2022-07-16T18:01:14+00:00

In preparation for module support, add missing MODULE_* information. Signed-off-by: Liam Beguin Link: https://lore.kernel.org/r/20220710013109.3349104-2-liambeguin@gmail.com Signed-off-by: Jonathan Cameron

iio: test: fix missing MODULE_LICENSE for IIO_RESCALE=m

2022-06-19T16:22:49+00:00

When IIO_RESCALE_KUNIT_TEST=y and IIO_RESCALE=m, drivers/iio/afe/iio-rescale.o is built twice causing the MODULE_LICENSE() to be lost, as shown by: ERROR: modpost: missing MODULE_LICENSE() in drivers/iio/afe/iio-rescale.o Rework the build configuration to have the dependency specified in the Kconfig. Reported-by: Randy Dunlap Fixes: 8e74a48d17d5 ("iio: test: add basic tests for the iio-rescale driver") Signed-off-by: Liam Beguin Acked-by: Randy Dunlap Tested-by: Randy Dunlap Reviewed-by: Masahiro Yamada Link: https://lore.kernel.org/r/20220601142138.3331278-1-liambeguin@gmail.com Cc: Signed-off-by: Jonathan Cameron