thermal: continuous: add custom dt entry support

Why?
In the case of therm-fan-est driver, the dt entry is not added
as part of thermal-zones. Hence, any continuous governor parameters
defined under therm-fan-est node will not be considered by the
continuous governor while binding to the thermal zone.

How?
Expose the dt parsing logic in continuous governor driver. This way
therm-fan-est driver can call the dt parsing function passing the
dt node defined under therm-fan-est dt entry.

Bug 200594433

Change-Id: I06f1653209887f674db0636fe6f5803771d46877
Signed-off-by: Karthik Mantravadi <mkarthik@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nvidia/+/2464743
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/include/linux/therm_est.h b/include/linux/therm_est.h
index a321f91a4..85284a5fe 100644
--- a/include/linux/therm_est.h
+++ b/include/linux/therm_est.h
@@ -258,4 +258,15 @@ static inline struct device *pwm_get_tach_dev(void)
 }
 #endif
 
+#if IS_ENABLED(CONFIG_THERMAL_GOV_CONTINUOUS)
+int continuous_thermal_gov_update_params(struct thermal_zone_params *tzp,
+                struct device_node *np);
+#else
+static inline int continuous_thermal_gov_update_params(
+                struct thermal_zone_params *tzp, struct device_node *np)
+{
+        return 0;
+}
+#endif
+
 #endif /* _LINUX_THERM_EST_H */