Hi all, The drivers/iio/trigger/stm32-timer-trigger.c file remains the last consumer if the IIO_COUNT type. The IIO_COUNT type was deprecated some time ago with the introduction of the Counter subsystem. Most of the previous IIO_COUNT consumers were migrated successfully to the Counter subsystem, but the stm32-timer-trigger driver remains as the sole module preventing the final removal of IIO_COUNT. At the time we deprecated IIO_COUNT, the Counter subsystem was nascent and lacked some of the functionality we have nowadays such as a character device interface, timestamping, hardware buffer support, etc. If I recall correctly, the decision to delay the migration of stm32-timer-trigger to the Counter subsystem was a lack of some functionality the Counter subsystem could not provide at the time. I hoping someone can evaluate stm32-timer-trigger to see if we are able transition now to the Counter subsystem, or if that necessary functionality is still missing today. Even if it turns out that we are unable to migrate, it'll be useful to know what's left to implement in the Counter subsystem to support stm32-timer-trigger or similar devices in the future. Thanks, William Breathitt Gray
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