kernel/linux.git/drivers/iio/inkern.c, branch v6.7

iio: inkern: Add a helper to query an available minimum raw value

2023-07-09T21:48:17+00:00

A helper, iio_read_max_channel_raw() exists to read the available maximum raw value of a channel but nothing similar exists to read the available minimum raw value. This new helper, iio_read_min_channel_raw(), fills the hole and can be used for reading the available minimum raw value of a channel. It is fully based on the existing iio_read_max_channel_raw(). Signed-off-by: Herve Codina Reviewed-by: Andy Shevchenko Acked-by: Jonathan Cameron Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20230623085830.749991-11-herve.codina@bootlin.com Signed-off-by: Mark Brown

iio: inkern: Replace a FIXME comment by a TODO one

2023-07-09T21:48:16+00:00

This FIXME comment is more a TODO one. It is a note when someone will need for this currently unsupported case. Change from FIXME to TODO. Signed-off-by: Herve Codina Suggested-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Acked-by: Jonathan Cameron Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20230623085830.749991-10-herve.codina@bootlin.com Signed-off-by: Mark Brown

iio: inkern: Use max_array() to get the maximum value from an array

2023-07-09T21:48:15+00:00

Use max_array() to get the maximum value from an array instead of a custom local loop. Signed-off-by: Herve Codina Reviewed-by: Andy Shevchenko Acked-by: Jonathan Cameron Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20230623085830.749991-9-herve.codina@bootlin.com Signed-off-by: Mark Brown

iio: inkern: Fix headers inclusion order

2023-07-09T21:48:13+00:00

Fix the mutex.h inclusion order as it seems to be the only one misplaces. Signed-off-by: Herve Codina Suggested-by: Andy Shevchenko Reviewed-by: Andy Shevchenko Acked-by: Jonathan Cameron Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20230623085830.749991-7-herve.codina@bootlin.com Signed-off-by: Mark Brown

iio: inkern: Remove the 'unused' variable usage in iio_channel_read_max()

2023-07-09T21:48:12+00:00

The code uses a local variable to initialize a null pointer in order to avoid accessing this null pointer later on. Simply removed the 'unused' variable and check for the null pointer just before accessing it. Signed-off-by: Herve Codina Reviewed-by: Andy Shevchenko Acked-by: Jonathan Cameron Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20230623085830.749991-6-herve.codina@bootlin.com Signed-off-by: Mark Brown

iio: inkern: Check error explicitly in iio_channel_read_max()

2023-07-09T21:48:10+00:00

The current implementation returns the error code as part of the default switch case. This can lead to returning an incorrect positive value in case of iio_avail_type enum entries evolution. In order to avoid this case, be more strict in error checking. Signed-off-by: Herve Codina Acked-by: Jonathan Cameron Reviewed-by: Andy Shevchenko Reviewed-by: Christophe Leroy Link: https://lore.kernel.org/r/20230623085830.749991-4-herve.codina@bootlin.com Signed-off-by: Mark Brown

iio: inkern: fix coding style warnings

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

Just cosmetics. No functional change intended... Signed-off-by: Nuno Sá Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220715122903.332535-16-nuno.sa@analog.com Signed-off-by: Jonathan Cameron

iio: inkern: remove OF dependencies

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

Since all users of the OF dependendent API are now converted to use the firmware agnostic alternative, we can drop OF dependencies from the IIO in kernel interface. Signed-off-by: Nuno Sá Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220715122903.332535-15-nuno.sa@analog.com Signed-off-by: Jonathan Cameron

iio: inkern: move to fwnode properties

2022-08-15T21:29:59+00:00

This moves the IIO in kernel interface to use fwnode properties and thus be firmware agnostic. Note that the interface is still not firmware agnostic. At this point we have both OF and fwnode interfaces so that we don't break any user. On top of this we also want to have a per driver conversion and that is the main reason we have both of_xlate() and fwnode_xlate() support. Signed-off-by: Nuno Sá Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220715122903.332535-6-nuno.sa@analog.com Signed-off-by: Jonathan Cameron

iio: inkern: split of_iio_channel_get_by_name()

2022-08-15T21:29:59+00:00

This change splits of_iio_channel_get_by_name() so that it decouples looking for channels in the current node from looking in it's parents nodes. This will be helpful when moving to fwnode properties where we need to release the handles when looking for channels in parent's nodes. No functional change intended... Signed-off-by: Nuno Sá Reviewed-by: Andy Shevchenko Link: https://lore.kernel.org/r/20220715122903.332535-5-nuno.sa@analog.com Signed-off-by: Jonathan Cameron