MLK-16093-2 thermal: qoriq: add necessary callbacks for cooling support

Add get_trend and set_trip_temp to support i.MX8MQ cooling
device, get_trend is to customize cooling governor behavior,
once temperature exceeds passive trip, cooling device will work
at full function, and set_trip_temp is for updating trip
temp when do thermal test via modifying trip temp from sysfs.

Signed-off-by: Anson Huang <Anson.Huang@nxp.com>

diff --git a/drivers/thermal/qoriq_thermal.c b/drivers/thermal/qoriq_thermal.c
index 787b5f6..4b1be03 100644 (file)
--- a/drivers/thermal/qoriq_thermal.c
+++ b/drivers/thermal/qoriq_thermal.c
@@ -78,6 +78,14 @@ struct qoriq_tmu_data {
        struct qoriq_tmu_regs __iomem *regs;
        int sensor_id;
        bool little_endian;
+       int temp_passive;
+       int temp_critical;
+};
+
+enum tmu_trip {
+       TMU_TRIP_PASSIVE,
+       TMU_TRIP_CRITICAL,
+       TMU_TRIP_NUM,
 };
 
 static void tmu_write(struct qoriq_tmu_data *p, u32 val, void __iomem *addr)
@@ -189,8 +197,44 @@ static void qoriq_tmu_init_device(struct qoriq_tmu_data *data)
        tmu_write(data, TMR_DISABLE, &data->regs->tmr);
 }
 
+static int tmu_get_trend(void *p,
+       int trip, enum thermal_trend *trend)
+{
+       int trip_temp;
+       struct qoriq_tmu_data *data = p;
+
+       if (!data->tz)
+               return 0;
+
+       trip_temp = (trip == TMU_TRIP_PASSIVE) ? data->temp_passive :
+                                            data->temp_critical;
+
+       if (data->tz->temperature >= trip_temp)
+               *trend = THERMAL_TREND_RAISE_FULL;
+       else
+               *trend = THERMAL_TREND_DROP_FULL;
+
+       return 0;
+}
+
+static int tmu_set_trip_temp(void *p, int trip,
+                            int temp)
+{
+       struct qoriq_tmu_data *data = p;
+
+       if (trip == TMU_TRIP_CRITICAL)
+               data->temp_critical = temp;
+
+       if (trip == TMU_TRIP_PASSIVE)
+               data->temp_passive = temp;
+
+       return 0;
+}
+
 static struct thermal_zone_of_device_ops tmu_tz_ops = {
        .get_temp = tmu_get_temp,
+       .get_trend = tmu_get_trend,
+       .set_trip_temp = tmu_set_trip_temp,
 };
 
 static int qoriq_tmu_probe(struct platform_device *pdev)
@@ -245,6 +289,8 @@ static int qoriq_tmu_probe(struct platform_device *pdev)
        }
 
        trip = of_thermal_get_trip_points(data->tz);
+       data->temp_passive = trip[0].temperature;
+       data->temp_critical = trip[1].temperature;
 
        /* Enable monitoring */
        site |= 0x1 << (15 - data->sensor_id);