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htu21: allow configuration via hints on FDT-based systems

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On-board devices should be configured via the FDT and overlays.
Hints are primarily useful for external and temporarily attached devices.
Adding hints is much easier and faster than writing and compiling
an overlay.

MFC after:	1 week
This commit is contained in:
Andriy Gapon 2021-11-04 13:56:12 +02:00
parent 6354154ef5
commit a75159eabc
1 changed files with 8 additions and 4 deletions
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12
sys/dev/iicbus/htu21.c
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@ -458,11 +458,17 @@ static int
htu21_probe(device_t dev)
{
uint8_t addr;
int rc;
#ifdef FDT
if (!ofw_bus_search_compatible(dev, compat_data)->ocd_data)
if (!ofw_bus_status_okay(dev))
return (ENXIO);
if (ofw_bus_search_compatible(dev, compat_data)->ocd_data)
rc = BUS_PROBE_GENERIC;
else
#endif
rc = BUS_PROBE_NOWILDCARD;
addr = iicbus_get_addr(dev);
if (addr != (HTU21_ADDR << 1)) {
device_printf(dev, "non-standard slave address 0x%02x\n",
@ -470,7 +476,7 @@ htu21_probe(device_t dev)
}
device_set_desc(dev, "HTU21 temperature and humidity sensor");
return (BUS_PROBE_GENERIC);
return (rc);
}
static int
@ -516,6 +522,4 @@ static devclass_t htu21_devclass;
DRIVER_MODULE(htu21, iicbus, htu21_driver, htu21_devclass, 0, 0);
MODULE_DEPEND(htu21, iicbus, IICBUS_MINVER, IICBUS_PREFVER, IICBUS_MAXVER);
MODULE_VERSION(htu21, 1);
#ifdef FDT
IICBUS_FDT_PNP_INFO(compat_data);
#endif