Fix the labels used in io-channels to be consistent in whole
tests/drivers/build_all/sensor/adc.dtsi file.
Signed-off-by: Franciszek Zdobylak <fzdobylak@antmicro.com>
Add support for a generic NTC, `ntc-thermistor-generic`. In this case,
the compensation table is provided via devicetree. Note that DT property
is prefixed with `zephyr,`, because while hardware related, it is linked
to a particular software implementation.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Refactor driver to align a bit more with its Linux counterpart, ie,
ntc_thermistor. This driver did quite a few _unconventional_ things,
like using "zephyr," compatibles, a dedicated node for pre-computed
compensation table (referenced by the actual pseudo-device node), etc.
The comparison helper function should likely be simplified as well (to
avoid the need for custom wrapper for bsearch), but this can be done
later.
In this refactor, each thermistor gets a compatible, e.g. "epcos,xxxx".
Compatibles are known by the driver, so are compensation tables. This
simplifies devicetree files. There's no need to bother about
compensation tables in **every** board file if Zephyr supports a certain
NTC model.
In general we should respect Linux bindings, which in the end influence
how drivers are implemented. In this case, this principle resulted in
simplified, easier to use code.
For future developers, this is how support for a new NTC can be added:
1. Add to the end of the driver:
```c
#undef DT_DRV_COMPAT
#define DT_DRV_COMPAT vnd_model
static __unused const struct ntc_compensation comp_vnd_model[] = {
{ x, y },
...,
};
#define DT_INST_FOREACH_STATUS_OKAY_VARGS(NTC_THERMISTOR_DEV_INIT,
DT_DRV_COMPAT, comp_vnd_model)
```
3. In driver's Kconfig make sure it depends on
DT_HAS_$DT_DRV_COMPAT$_ENABLED
Note: $X$ means _value_ of X.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
It looks like the Zephyr thermistor driver bindings were half-copied
from Linux ntc-thermistor. Zephyr principle is to maintain compatibility
with Linux, when possible, so there's no reason to deviate here. Convert
the connection type from a custom enum to a boolean, as Linux does.
Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
Rename adc node to not collide with the default adc
node now present in the native posix dts.
Signed-off-by: Benjamin Björnsson <benjamin.bjornsson@gmail.com>
Remove includes of adc dt-bindings header since these are
now already included in the root .dtsi file that adds an
adc node.
Signed-off-by: Benjamin Björnsson <benjamin.bjornsson@gmail.com>
