diff options
| author | Wei Ni <wni@nvidia.com> | 2019-02-19 05:27:04 +0100 |
|---|---|---|
| committer | Eduardo Valentin <edubezval@gmail.com> | 2019-02-21 02:23:38 +0100 |
| commit | 76b1ae8698d63a15000068057ccae38ec763baaa (patch) | |
| tree | f49bb8b448fd0d00f858a2e1727f53c67fcaef14 /drivers/thermal/tegra | |
| parent | thermal: tegra: fix memory allocation (diff) | |
| download | linux-76b1ae8698d63a15000068057ccae38ec763baaa.tar.xz linux-76b1ae8698d63a15000068057ccae38ec763baaa.zip | |
thermal: tegra: add get_trend ops
Add support for get_trend ops that allows soctherm
sensors to be used with the step-wise governor.
Signed-off-by: Wei Ni <wni@nvidia.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Diffstat (limited to 'drivers/thermal/tegra')
| -rw-r--r-- | drivers/thermal/tegra/soctherm.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/thermal/tegra/soctherm.c b/drivers/thermal/tegra/soctherm.c index b1ead6ea4c73..70043a28eb7a 100644 --- a/drivers/thermal/tegra/soctherm.c +++ b/drivers/thermal/tegra/soctherm.c @@ -488,9 +488,41 @@ static int tegra_thermctl_set_trip_temp(void *data, int trip, int temp) return 0; } +static int tegra_thermctl_get_trend(void *data, int trip, + enum thermal_trend *trend) +{ + struct tegra_thermctl_zone *zone = data; + struct thermal_zone_device *tz = zone->tz; + int trip_temp, temp, last_temp, ret; + + if (!tz) + return -EINVAL; + + ret = tz->ops->get_trip_temp(zone->tz, trip, &trip_temp); + if (ret) + return ret; + + temp = READ_ONCE(tz->temperature); + last_temp = READ_ONCE(tz->last_temperature); + + if (temp > trip_temp) { + if (temp >= last_temp) + *trend = THERMAL_TREND_RAISING; + else + *trend = THERMAL_TREND_STABLE; + } else if (temp < trip_temp) { + *trend = THERMAL_TREND_DROPPING; + } else { + *trend = THERMAL_TREND_STABLE; + } + + return 0; +} + static const struct thermal_zone_of_device_ops tegra_of_thermal_ops = { .get_temp = tegra_thermctl_get_temp, .set_trip_temp = tegra_thermctl_set_trip_temp, + .get_trend = tegra_thermctl_get_trend, }; static int get_hot_temp(struct thermal_zone_device *tz, int *trip, int *temp) |