staging:iio:accel rework driver and move out of staging.

Changes since V1:
- Fix the patch that breaks the makefile due to a := when it should be += It didn't make it to the end of the set, but broke building of other drivers in the middle (thanks Lars-Peter Clausen)
- Drop the unwanted buffer setup after the move to the hybrid hardware / software buffer (Lars-Peter Clausen)
- Use chan->address rather than the modifier to index the address array. (Lars-Peter Clausen)
- Typo and gibberish fixups (Peter Meerwald-Stadhler)

V1 Message

This was around about the 4th IIO driver dating back to the days when I was sticking these on sprinters and seeing if we could learn anything useful about how they ran.

It was a device way ahead of it's time. Back then this was pretty much the only relatively high G / low cost sensor and it had a hardware fifo.

Anyhow, it has languished in staging primarily because of the complexity around working out how we handle hardware buffers. However, that trail has long since been blaized by the likes of the am335x driver and now lots of of newer devices are coming with fifos to smooth the flow of data between these realtime chips and non realtime operating sytems, so it just became a question of getting around to sorting it out. I suspect there are very few of these still out there, but I have an sca3000-e05 so that's no excuse

Anyhow, please review the whole series, but in particular the final move patch (i.e. the resulting code). The only odd corner I know of now is the interaction of the watermark with the software controlled watermarks. That may take some thought, but in the meantime I don't think that is sufficient reason to keep it in staging.

Some wacky corners in this hardware (like the crazy number representations for the motion detection thresholds). It's a good datasheet but you do have to wonder what the designers were thinking at times

Jonathan

p.s. The best bit about this series is now I can moan at everyone else about not cleaning up their staging drivers as this is the last one of mine.

Jonathan Cameron (18):
staging:iio:accel:sca3000 Fix a use before setting of the

    indio_dev->buffer pointer.

staging:iio:accel:sca3000 merge files into one. staging:iio:accel:sca3000 drop sca3000_register_ring_funcs staging:iio:accel:sca3000 Fix clearing of flag + setting of size of
scan.
staging:iio:accel:sca3000 Drop custom ABI for watersheds. staging:iio:accel:sca3000 move to hybrid hard / soft buffer design. staging:iio:accel:sca3000 drop some unused variables. staging:iio:accel:sca3000 use a 'fake' channel to handle freefall
event registration.
staging:iio:accel:sca3000 Clean up register defines. staging:iio:accel:sca3000 add readback of the 3db low pass filter
frequency
staging:iio:accel:sca3000: Fix off by one error in axis due to
IIO_NO_MOD
staging:iio:accel:sca3000 Add write support to the low pass filter
control
staging:iio:accel:sca3000 Drop custom measurement mode attributes staging:iio:accel:sca3000 replace non standard revision attr with
dev_info on probe
staging:iio:accel:sca3000 Tidy up probe order to avoid a race. staging:iio:accel:sca3000 small checkpatch fixes (alignment etc) staging:iio:accel:sca3000 kernel docify comments that were nearly
kernel doc.
staging:iio:accel:sca3000 Move out of staging.

 drivers/iio/accel/Kconfig                |   12 +
 drivers/iio/accel/Makefile               |    2 +
 drivers/iio/accel/sca3000.c              | 1575 ++++++++++++++++++++++++++++++
 drivers/staging/iio/accel/Kconfig        |   10 -
 drivers/staging/iio/accel/Makefile       |    3 -
 drivers/staging/iio/accel/sca3000.h      |  279 ------
 drivers/staging/iio/accel/sca3000_core.c | 1210 -----------------------
 drivers/staging/iio/accel/sca3000_ring.c |  350 -------
 drivers/staging/iio/ring_hw.h            |   27 -
 9 files changed, 1589 insertions(+), 1879 deletions(-)
 create mode 100644 drivers/iio/accel/sca3000.c
 delete mode 100644 drivers/staging/iio/accel/sca3000.h
 delete mode 100644 drivers/staging/iio/accel/sca3000_core.c
 delete mode 100644 drivers/staging/iio/accel/sca3000_ring.c
 delete mode 100644 drivers/staging/iio/ring_hw.h

2.10.0