On Thu, Mar 23, 2017 at 08:38:42PM -0700, Tony Lindgren wrote: > On Motorola phones like droid 4 there is a custom CPCAP PMIC. This PMIC > has ADCs that are used for battery charging and USB PHY VBUS and ID pin > detection. > > Unfortunately the only documentation for this ADC seems to be the > Motorola mapphone Linux kernel tree. I have tested that reading raw and > scaled values works, but I have not used the timed sampling that the ADC > seems to support. > > Let's add a minimal support for it so we can eventually provide IIO > channels for the related battery charging and USB PHY drivers. > > Cc: devicetree@xxxxxxxxxxxxxxx > Cc: Marcel Partap <mpartap@xxxxxxx> > Cc: Michael Scott <michael.scott@xxxxxxxxxx> > Cc: Sebastian Reichel <sre@xxxxxxxxxx> > Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx> > --- > > Changes since v2: > > - Simplify things further by using channel based indexing and > remove more drivers specific enumerations > > Changes since v1: > > - Fix numerous issues pointed out by Peter Meerwald-Stadler > <pmeerw@xxxxxxxxxx> and Jonathan Cameron <jic23@xxxxxxxxxx> > > - Simplify things further by limiting read functions to a > single channel instead of a bank and got rid of the driver > specific cpcap_adc_conv_type in favor of IIO generic types > > --- > .../devicetree/bindings/iio/adc/cpcap-adc.txt | 18 + Acked-by: Rob Herring <robh@xxxxxxxxxx> > drivers/iio/adc/Kconfig | 11 + > drivers/iio/adc/Makefile | 1 + > drivers/iio/adc/cpcap-adc.c | 1007 ++++++++++++++++++++ > 4 files changed, 1037 insertions(+) > create mode 100644 Documentation/devicetree/bindings/iio/adc/cpcap-adc.txt > create mode 100644 drivers/iio/adc/cpcap-adc.c -- To unsubscribe from this list: send the line "unsubscribe linux-iio" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
