| Message ID | 20230613090726.1358199-1-wenst@chromium.org (mailing list archive) |
|---|---|
| State | Handled Elsewhere, archived |
| Headers | show |
| Series | power: supply: core: Avoid duplicate hwmon device from thermal framework | expand |
Hi, On Tue, Jun 13, 2023 at 05:07:23PM +0800, Chen-Yu Tsai wrote: > When the power supply device being registered supports a temperature > readout, the core registers a thermal zone for it. The thermal core > would register a hwmon device for that unless told otherwise. > > When CONFIG_POWER_SUPPLY_HWMON is enabled, the power supply core creates > a hwmon device. This results in a second entry, one which has a better > name than the one registered through the thermal framework. It could > potentially have readouts other than temperature. > > To simplify the result, tell the thermal framework to not register a > hwmon device if CONFIG_POWER_SUPPLY_HWMON is enabled. The result is > one hwmon device with all the readings the device supports. Thanks, queued. -- Sebastian > drivers/power/supply/power_supply_core.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) > > diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c > index 3791aec69ddc..4aa466c945e2 100644 > --- a/drivers/power/supply/power_supply_core.c > +++ b/drivers/power/supply/power_supply_core.c > @@ -1305,8 +1305,12 @@ static int psy_register_thermal(struct power_supply *psy) > > /* Register battery zone device psy reports temperature */ > if (psy_has_property(psy->desc, POWER_SUPPLY_PROP_TEMP)) { > + /* Prefer our hwmon device and avoid duplicates */ > + struct thermal_zone_params tzp = { > + .no_hwmon = IS_ENABLED(CONFIG_POWER_SUPPLY_HWMON) > + }; > psy->tzd = thermal_zone_device_register(psy->desc->name, > - 0, 0, psy, &psy_tzd_ops, NULL, 0, 0); > + 0, 0, psy, &psy_tzd_ops, &tzp, 0, 0); > if (IS_ERR(psy->tzd)) > return PTR_ERR(psy->tzd); > ret = thermal_zone_device_enable(psy->tzd); > -- > 2.41.0.162.gfafddb0af9-goog >
diff --git a/drivers/power/supply/power_supply_core.c b/drivers/power/supply/power_supply_core.c index 3791aec69ddc..4aa466c945e2 100644 --- a/drivers/power/supply/power_supply_core.c +++ b/drivers/power/supply/power_supply_core.c @@ -1305,8 +1305,12 @@ static int psy_register_thermal(struct power_supply *psy) /* Register battery zone device psy reports temperature */ if (psy_has_property(psy->desc, POWER_SUPPLY_PROP_TEMP)) { + /* Prefer our hwmon device and avoid duplicates */ + struct thermal_zone_params tzp = { + .no_hwmon = IS_ENABLED(CONFIG_POWER_SUPPLY_HWMON) + }; psy->tzd = thermal_zone_device_register(psy->desc->name, - 0, 0, psy, &psy_tzd_ops, NULL, 0, 0); + 0, 0, psy, &psy_tzd_ops, &tzp, 0, 0); if (IS_ERR(psy->tzd)) return PTR_ERR(psy->tzd); ret = thermal_zone_device_enable(psy->tzd);
When the power supply device being registered supports a temperature readout, the core registers a thermal zone for it. The thermal core would register a hwmon device for that unless told otherwise. When CONFIG_POWER_SUPPLY_HWMON is enabled, the power supply core creates a hwmon device. This results in a second entry, one which has a better name than the one registered through the thermal framework. It could potentially have readouts other than temperature. To simplify the result, tell the thermal framework to not register a hwmon device if CONFIG_POWER_SUPPLY_HWMON is enabled. The result is one hwmon device with all the readings the device supports. Signed-off-by: Chen-Yu Tsai <wenst@chromium.org> --- drivers/power/supply/power_supply_core.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)