[PATCH 3/4] thermal: of-thermal: Extend thermal dt driver to support bi-directional monitoring of a thermal trip point.

Thara Gopinath
2019-09-19T02:18:38Z

Introduce of_thermal_get_trip_monitor_type to return the direction
of monitoring of a thermal trip point. Also translate the DT information
regarding trip point monitor direction into the thermal framework.

Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
---
drivers/thermal/of-thermal.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)

diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
index dc5093b..a5f6fdc 100644
--- a/drivers/thermal/of-thermal.c
+++ b/drivers/thermal/of-thermal.c
@@ -377,6 +377,20 @@ static int of_thermal_set_trip_hyst(struct thermal_zone_device *tz, int trip,
return 0;
}

+static int of_thermal_get_trip_monitor_type
+ (struct thermal_zone_device *tz, int trip,
+ enum thermal_trip_monitor_type *type)
+{
+ struct __thermal_zone *data = tz->devdata;
+
+ if (trip >= data->ntrips || trip < 0)
+ return -EDOM;
+
+ *type = data->trips[trip].monitor_type;
+
+ return 0;
+}
+
static int of_thermal_get_crit_temp(struct thermal_zone_device *tz,
int *temp)
{
@@ -401,6 +415,7 @@ static struct thermal_zone_device_ops of_thermal_ops = {
.set_trip_temp = of_thermal_set_trip_temp,
.get_trip_hyst = of_thermal_get_trip_hyst,
.set_trip_hyst = of_thermal_set_trip_hyst,
+ .get_trip_monitor_type = of_thermal_get_trip_monitor_type,
.get_crit_temp = of_thermal_get_crit_temp,

.bind = of_thermal_bind,
@@ -809,6 +824,7 @@ static int thermal_of_populate_trip(struct device_node *np,
{
int prop;
int ret;
+ bool is_monitor_falling;

ret = of_property_read_u32(np, "temperature", &prop);
if (ret < 0) {
@@ -830,6 +846,12 @@ static int thermal_of_populate_trip(struct device_node *np,
return ret;
}

+ is_monitor_falling = of_property_read_bool(np, "monitor-falling");
+ if (is_monitor_falling)
+ trip->monitor_type = THERMAL_TRIP_MONITOR_FALLING;
+ else
+ trip->monitor_type = THERMAL_TRIP_MONITOR_RISING;
+
/* Required for cooling map matching */
trip->np = np;
of_node_get(np);
--
2.1.4