Thursday 4 July 2013

One-shot ADC reading in 3.11

I successfully reinvented the wheel :)

After realizing that IIO was disabled in Kconfig, it was easy once things started running somewhat. Previously it'll all be just blank!

Manually re-based the patches that I had done previously for 3.8.

I have one-shot ADC reading up and fixed for 3.11.

These patches can be upstreamed too! Especially the one that fixes the first sample read and the Ebusy signal bugs.

The iio-scale parameter requires a bit more refinement. At the moment, I have fixed the scale to 1800mV which is for BBB. Ideally this should be read from somewhere(perhaps a configured register..) or an input via sysfs..

I really need to get around configuring the resisters for the TSC test. Evtest works great. But I'll need switches and a few pots for a proper test bench..

Too pre-occupied with the MSc thesis during the day time.

Now for looking at how to update my github fork so that I can upload these patches and send a pull request to koen.. Have to send that pull request for the 3.8 ones too..

2 comments:

  1. What do you mean that they "can be upstreamed"? Are there existing submissions to one of the maintainer lists?

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  2. I believe you are unaware of https://lkml.org/lkml/2013/6/12/361

    The Mfd-next tree has already received and accepted a large patchset by Sebastian. Some patches are the same as the ones we had in 3.8. But mostly different stuff. I still noticed the first sample read problem and the Ebusy signal problem when I load them only.

    I add some more patches on top of those patches. These fix the first sample read and ebusy bugs.

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