Support PiModules UPS PIco HV3.0A for Raspberry Pi A+/B+/2B/3B and Zero (W)

[renne]

Please add support for the PiModules UPS PIco HV3.0A.

It needs triggering the watchdog with a train pulse on GPIO 22/27 via sysfs GPIO and returns power state via the GPIOs. Further settings and information can be obtained via I²C registers.

Most current information can be found here.

[jimklimov]

Sounds like a fun project, but unfortunately needs someone with hardware to step up and implement and test it. So far nobody picked it up, and the links in this issue went defunct...

[jimklimov]

That above said, now there is more in-tree precedent about both GPIO and I2C drivers, including a PiJuice HAT driver added by #730 - at least to look and be inspired by for new work.