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Bug fixes for the ads111x driver... make configurable gain and sample rate

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hints work on per-channel basis as documented, rather than chip-wide.  Also,
when configured via hints, return BUS_PROBE_NOWILDCARD on successful hints
match, so that the hints don't bogusly match other types of i2c chips.
This commit is contained in:
Ian Lepore 2020-10-12 18:02:51 +00:00
parent e6f9af16bc
commit c88da3b94d
1 changed files with 9 additions and 2 deletions
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11
sys/dev/iicbus/ads111x.c
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@ -456,12 +456,15 @@ ads111x_add_channels(struct ads111x_softc *sc)
name = device_get_name(sc->dev);
unit = device_get_unit(sc->dev);
for (chan = 0; chan < sc->chipinfo->numchan; ++chan) {
char resname[16];
found = false;
gainidx = DEFAULT_GAINIDX;
rateidx = DEFAULT_RATEIDX;
if (resource_int_value(name, unit, "gain_index", &gainidx) == 0)
snprintf(resname, sizeof(resname), "%d.gain_index", chan);
if (resource_int_value(name, unit, resname, &gainidx) == 0)
found = true;
if (resource_int_value(name, unit, "rate_index", &gainidx) == 0)
snprintf(resname, sizeof(resname), "%d.rate_index", chan);
if (resource_int_value(name, unit, resname, &rateidx) == 0)
found = true;
if (found) {
ads111x_setup_channel(sc, chan, gainidx, rateidx);
@ -522,7 +525,11 @@ ads111x_probe(device_t dev)
info = ads111x_find_chipinfo(dev);
if (info != NULL) {
device_set_desc(dev, info->name);
#ifdef FDT
return (BUS_PROBE_DEFAULT);
#else
return (BUS_PROBE_NOWILDCARD);
#endif
}
return (ENXIO);