[PATCH V7 07/12] thermal: of-thermal: allow setting trip_temp on hardware

[Wei Ni]

In current of-thermal, the .set_trip_temp only support to
set trip_temp for SW. But some sensors support to set
trip_temp on hardware, so that can trigger interrupt,
shutdown or any other events.
This patch adds .set_trip_temp() callback in
thermal_zone_of_device_ops{}, so that the sensor device can
use it to set trip_temp on hardware.

Signed-off-by: Wei Ni <w...@nvidia.com>
---
 drivers/thermal/of-thermal.c | 8 ++++++++
 include/linux/thermal.h      | 1 +
 2 files changed, 9 insertions(+)

diff --git a/drivers/thermal/of-thermal.c b/drivers/thermal/of-thermal.c
index 5a515f8677ec..57828841b6e6 100644
--- a/drivers/thermal/of-thermal.c
+++ b/drivers/thermal/of-thermal.c
@@ -331,6 +331,14 @@ static int of_thermal_set_trip_temp(struct 
thermal_zone_device *tz, int trip,
        if (trip >= data->ntrips || trip < 0)
                return -EDOM;
 
+       if (data->ops->set_trip_temp) {
+               int ret;
+
+               ret = data->ops->set_trip_temp(data->sensor_data, trip, temp);
+               if (ret)
+                       return ret;
+       }
+
        /* thermal framework should take care of data->mask & (1 << trip) */
        data->trips[trip].temperature = temp;
 
diff --git a/include/linux/thermal.h b/include/linux/thermal.h
index 9c481991fdc7..fcaab873b94f 100644
--- a/include/linux/thermal.h
+++ b/include/linux/thermal.h
@@ -338,6 +338,7 @@ struct thermal_zone_of_device_ops {
        int (*get_temp)(void *, int *);
        int (*get_trend)(void *, long *);
        int (*set_emul_temp)(void *, int);
+       int (*set_trip_temp)(void *, int, int);
 };
 
 /**
-- 
1.9.1