iio: adc: rradc: Update RRADC reads and scaling

A check is needed to ensure the LSB and MSB are coherent
when reading the result registers for the RRADC channels.
The driver performs another round of read request and
compares the result registers to ensure the data read
back is coherent.

Since there are no channel specific properties remove
the dependency to add the channel nodes in the device
tree and instead statically register the channels within
the driver.

Update the scaling functions to report in the units
desired for the final scaled value based on the channel.
The resistance channel reports the units for batt_id
in ohms, the voltage channels such as DCIN, USBIN report
the value in units of microvolts, the current channels
in units of microamps and the temperature channels
such as thermistors are reported in units of millidegC.

Change-Id: I56e6bff28be2cc23f00622d5c37e42564c51a72f
Signed-off-by: Siddartha Mohanadoss <smohanad@codeaurora.org>

0 files changed, 0 insertions, 0 deletions