Hello, I want to add support for the DRV2605L[1] haptic driver, but I am not sure what interface to use in doing so. I saw that there was no haptic upperhalf support in the motor/ folder, but I found a force-feedback upperhalf[2] in input/ which, from what I understand, is meant for haptics. However, I don't see how I can use it in my case. DRV2605L has a lot of features (RTP support, Analog input, PWM input, Audio-To-Vibe interface, incorporated ROM effects library, etc) and the ff driver seems to be lacking the flexibility I need.
My question is: Should I use the ff upperhalf to add support for DRV2605L (and, if so, can you please give me some pointers on how to implement such a feature-rich driver using the ff interface), or should I write a haptic upperhalf that uses the classic file-operations: read, write, ioctl, etc. (similar to a sensor upperhalf) ? [1]: https://www.ti.com/lit/ds/symlink/drv2605l.pdf?ts=1733068441406&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FDRV2605L [2]: https://github.com/apache/nuttx/blob/master/drivers/input/ff_upper.c Thank you, Simona
