On 04/18/2016 03:57 PM, jic23@xxxxxxxxxxxxxxxxxxxxx wrote: > On 18.04.2016 14:56, Marek Vasut wrote: >> On 04/18/2016 03:44 PM, jic23@xxxxxxxxxxxxxxxxxxxxx wrote: >>> On 18.04.2016 14:26, Marek Vasut wrote: >>>> On 04/16/2016 09:40 PM, Jonathan Cameron wrote: >>>>> On 10/04/16 21:52, Marek Vasut wrote: >>>>>> Add support for HopeRF pressure and temperature sensor. >>>>>> >>>>>> This device uses two fixed I2C addresses, one for storing >>>>>> calibration coefficients and another for accessing the ADC. >>>>>> >>>>>> Signed-off-by: Marek Vasut <marex@xxxxxxx> >>>>>> Cc: Matt Ranostay <mranostay@xxxxxxxxx> >>>>>> Cc: Jonathan Cameron <jic23@xxxxxxxxxx> >>>>> Sorry I didn't get to this earlier in the week. >>>>> >>>>> Unfortunately the resulting scales don't match the standard ABI for >>>>> these >>>>> two channel types. >>>> >>>> Ah, sorry for the inconvenience. >>>> >>>>> Otherwise, looks good. I've cc'd the devicetree list and maintainers. >>>>> The binding is trivial I think, but always good to give people a >>>>> opportunity to comment. >>>>> >>>>> Jonathan >>>>>> --- >>>>>> V2: - Expand the binding document with more details on the XCLR pin >>>>>> - Switch from IIO_CHAN_INFO_PROCESSED to RAW + SCALE >>>>>> - Add failpath into hp03_update_temp_pressure() for the case >>>>>> when ADC readout fails. This correctly sets the XCLR pin back >>>>>> to LO now. >>>>>> - Add comment explaining the need for allocation of child device >>>>>> in hp03_probe(). >>>>>> V3: - Fix indent in the DT binding documentation >>>>>> - Report raw pressure and temperature unmodified >>>>> Good >>>>>> - Report pressure scale to be 1 , since pressure is in Pa >>>>> Standard units for pressure (see >>>>> Documentation/ABI/testing/sysfs-bus-iio >>>>> are KPa so it wants to report 0.001) >>>> >>>> OK, got it. >>>> >>>>>> - Report temperature scale to be 0.01 , since temp is in 0.01C >>>>>> steps >>>>> Unfortunately the documented base unit for temp (originally from >>>>> hwmon before >>>>> we started going for SI units every time) are milli Celcius. Thus >>>>> the value >>>>> reported * scale should end up in milli degrees Celcius. Hence if it >>>>> is in 0.01 >>>>> steps the scale should be 0.1 >>>> >>>> Shouldn't this be 10 ? The value is in 0.01C steps , so the value >>>> has to >>>> be multiplied by 10 to convert it into mC units. >>> err. yes I'm clearly wrong :) >> >> Thanks for confirming :) V4 is coming. > Beware, I might not be any more correct today ;) That's fine, take your time, MW opening is far away :) -- Best regards, Marek Vasut -- 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
