tree b40a354c7655a25f7ac880c0f83b32bdd26a57c7
parent ff1293f67734da68e23fecb6ecdae7112b8c43f9
author Andreas Klinger <ak@it-klinger.de> 1483638717 +0100
committer Jonathan Cameron <jic23@kernel.org> 1484078099 +0000

iio: adc: hx711: Add IIO driver for AVIA HX711

This is the IIO driver for AVIA HX711 ADC which is mostly used in weighting
cells.

The protocol is quite simple and using GPIOs:
One GPIO is used as clock (SCK) while another GPIO is read (DOUT)

The raw value read from the chip is delivered.
To get a weight one needs to subtract the zero offset and scale it.

Signed-off-by: Andreas Klinger <ak@it-klinger.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>