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drivers: thermal: tsens: Cache the trip temperature

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Cache the trip temperature for the thermal framework to read. Once the
trip occurs the temperature at which the trip or trip clear is cached
till the thermal framework sets a new trip value. This will ensure that
the thermal framework will read the exact temperature as the driver and
it cannot go out of sync.

Change-Id: Ie44ee0e1e7e4acf3a08f47f1204e6d2ab1a8100f
Signed-off-by: Manaf Meethalavalappu Pallikunhi <quic_manafm@quicinc.com>
This commit is contained in:
Manaf Meethalavalappu Pallikunhi 2021-12-16 15:49:42 +05:30 committed by Rashid Zafar
parent 70627fa6e2
commit 8f25da0261
2 changed files with 11 additions and 1 deletions
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11
drivers/thermal/qcom/tsens.c
View File

@ -466,7 +466,7 @@ static irqreturn_t tsens_irq_thread(int irq, void *data)
for (i = 0; i < priv->num_sensors; i++) {
bool trigger = false;
const struct tsens_sensor *s = &priv->sensor[i];
struct tsens_sensor *s = &priv->sensor[i];
u32 hw_id = s->hw_id;
if (!s->tzd)
@ -511,6 +511,7 @@ static irqreturn_t tsens_irq_thread(int irq, void *data)
spin_unlock_irqrestore(&priv->ul_lock, flags);
if (trigger) {
s->cached_temp = temp;
dev_dbg(priv->dev, "[%u] %s: TZ update trigger (%d mC)\n",
hw_id, __func__, temp);
thermal_zone_device_update(s->tzd,
@ -564,6 +565,7 @@ static int tsens_set_trips(void *_sensor, int low, int high)
tsens_read_irq_state(priv, hw_id, s, &d);
s->cached_temp = INT_MIN;
/* Write the new thresholds and clear the status */
regmap_field_write(priv->rf[LOW_THRESH_0 + hw_id], low_val);
regmap_field_write(priv->rf[UP_THRESH_0 + hw_id], high_val);
@ -605,6 +607,11 @@ int get_temp_tsens_valid(const struct tsens_sensor *s, int *temp)
u32 valid;
int ret;
if (s->cached_temp != INT_MIN) {
*temp = s->cached_temp;
goto dump_and_exit;
}
/* VER_0 doesn't have VALID bit */
if (tsens_version(priv) == VER_0)
goto get_temp;
@ -624,6 +631,7 @@ int get_temp_tsens_valid(const struct tsens_sensor *s, int *temp)
/* Valid bit is set, OK to read the temperature */
*temp = tsens_hw_to_mC(s, temp_idx);
dump_and_exit:
TSENS_DBG(priv, "Sensor_id: %d temp: %d", hw_id, *temp);
return 0;
@ -1150,6 +1158,7 @@ static int tsens_probe(struct platform_device *pdev)
priv->sensor[i].hw_id = data->hw_ids[i];
else
priv->sensor[i].hw_id = i;
priv->sensor[i].cached_temp = INT_MIN;
}
priv->feat = data->feat;
priv->fields = data->fields;

1
drivers/thermal/qcom/tsens.h
View File

@ -56,6 +56,7 @@ struct tsens_sensor {
unsigned int hw_id;
int slope;
u32 status;
int cached_temp;
};
/**