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Mxs-lradc driver development status/progress

Question asked by Denny van Leersum on Jul 5, 2013
Latest reply on Nov 17, 2013 by OtavioSalvador



At the moment I am running the mainline linux kernel 3.8 on some of our i.mx28 based boards. On one board we use the iio driver in staging to read some analog values from the lradc controller through the triggered buffer interface.


For another board with a touchscreen connected to the lradc we decided to upgrade to the latest 3.10 kernel for better support. The touchscreen works fine, but I am having trouble reading adc values from the other channels.


I have made a little progress and can now read the values from the adc out of the sysfs (raw mode) whith the touchscreen functioning, however the interrupt based trigger interface seems broken.


Has anyone else succeeded or tried using the touchscreen combined with reading other channels (irq based) with the driver in 3.9+ kernels?


Quite a few things changed recently so it seems that this driver is under developement. Can anyone point me to where I can find the latest patches/commits to this part of the kernel? I would also like to get in touch with the current developer(s) to know what's happening before I start adding/changing things which are there or aren't broken (anymore?).




Denny van Leersum