From: Wei Ni <wni@nvidia.com>
To: <daniel.lezcano@linaro.org>, <edubezval@gmail.com>
Cc: <thierry.reding@gmail.com>, <linux-tegra@vger.kernel.org>,
<rui.zhang@intel.com>, <srikars@nvidia.com>,
<linux-kernel@vger.kernel.org>, <linux-pm@vger.kernel.org>,
Wei Ni <wni@nvidia.com>
Subject: [PATCH v7 3/3] thermal: tegra: add get_trend ops
Date: Thu, 3 Jan 2019 18:12:49 +0800 [thread overview]
Message-ID: <1546510369-28491-4-git-send-email-wni@nvidia.com> (raw)
In-Reply-To: <1546510369-28491-1-git-send-email-wni@nvidia.com>
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>
---
drivers/thermal/tegra/soctherm.c | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/drivers/thermal/tegra/soctherm.c b/drivers/thermal/tegra/soctherm.c
index fd2703c0cfc5..864205af104b 100644
--- a/drivers/thermal/tegra/soctherm.c
+++ b/drivers/thermal/tegra/soctherm.c
@@ -488,9 +488,43 @@ 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;
+
+ mutex_lock(&tz->lock);
+ temp = tz->temperature;
+ last_temp = tz->last_temperature;
+ mutex_unlock(&tz->lock);
+
+ 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)
--
2.7.4
next prev parent reply other threads:[~2019-01-03 10:13 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-03 10:12 [PATCH v7 0/3] Fixes for Tegra soctherm Wei Ni
2019-01-03 10:12 ` [PATCH v7 1/3] thermal: tegra: remove unnecessary warnings Wei Ni
2019-02-18 9:47 ` Daniel Lezcano
2019-02-19 2:14 ` Wei Ni
2019-01-03 10:12 ` [PATCH v7 2/3] thermal: tegra: fix memory allocation Wei Ni
2019-02-18 10:24 ` Daniel Lezcano
2019-01-03 10:12 ` Wei Ni [this message]
2019-02-18 10:27 ` [PATCH v7 3/3] thermal: tegra: add get_trend ops Daniel Lezcano
2019-02-19 2:15 ` Wei Ni
2020-03-30 17:23 ` Daniel Lezcano
2019-01-11 2:20 ` [PATCH v7 0/3] Fixes for Tegra soctherm Wei Ni
2019-01-21 9:17 ` Wei Ni
2019-02-18 7:59 ` Wei Ni
2019-02-20 2:14 ` Zhang Rui
2019-02-20 8:42 ` Wei Ni
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