Reply to [RFC PATCH v2 0/1] Adding support for IIO SCMI based sensors

Jyoti Bhayana
2021-01-05T23:10:11Z

Hi Jonathan,

> So, sensor_max_range can effectively be exposed as a combination of
> scale and the *_raw_avail for a raw read (via the read_avail callback in IIO).
> We'll ignore the fact the interface assumes a single value (so I assume symmetric?)

Based on the SCMI specification the sensor min range and max range are 64 bits signed number.

looks like IIO_AVAIL_RANGE can only take the following
types of data which all looks like 32 bit. IIO_VAL_FRACTIONAL
also takes two int type numbers.
How can I send 64 bit sensor range using this and read_avail callback?

#define IIO_VAL_INT 1
#define IIO_VAL_INT_PLUS_MICRO 2
#define IIO_VAL_INT_PLUS_NANO 3
#define IIO_VAL_INT_PLUS_MICRO_DB 4
#define IIO_VAL_INT_MULTIPLE 5
#define IIO_VAL_FRACTIONAL 10
#define IIO_VAL_FRACTIONAL_LOG2 11
#define IIO_VAL_CHAR 12

Thanks,
Jyoti