61 lines
1.9 KiB
Diff
61 lines
1.9 KiB
Diff
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From 7e51c80478a0ce1d36ee48b4007222296ea26cab Mon Sep 17 00:00:00 2001
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From: "charles.park" <charles.park@hardkernel.com>
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Date: Fri, 1 Jun 2018 18:12:01 +0900
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Subject: [PATCH 054/109] ODROID-XU4: Update hack avoiding the invalid
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temperature by TMU broken
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Change-Id: I6092834427950a50746535458e99bf7089212044
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---
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drivers/thermal/thermal_helpers.c | 28 ++++++++++++++++++++++++++++
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1 file changed, 28 insertions(+)
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diff --git a/drivers/thermal/thermal_helpers.c b/drivers/thermal/thermal_helpers.c
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index 7f50f412e02a..b0f1a9cf6a7d 100644
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--- a/drivers/thermal/thermal_helpers.c
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+++ b/drivers/thermal/thermal_helpers.c
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@@ -75,6 +75,10 @@ EXPORT_SYMBOL(get_thermal_instance);
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*
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* Return: On success returns 0, an error code otherwise
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*/
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+
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+#define CRITICAL_TEMP 120000
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+int thermal_zone_data[4] = { 0, };
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+
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int thermal_zone_get_temp(struct thermal_zone_device *tz, int *temp)
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{
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int ret = -EINVAL;
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@@ -108,6 +112,30 @@ int thermal_zone_get_temp(struct thermal_zone_device *tz, int *temp)
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*temp = tz->emul_temperature;
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}
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+ /* save thermal_zone data */
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+ if (!ret)
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+ thermal_zone_data[tz->id] = *temp;
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+ /*
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+ * This case is that the thermal sensor is broken.
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+ * That's not real temperature. Set the fake temperature value in order to
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+ * avoid reaching the ciritical temperature.
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+ */
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+ if ((thermal_zone_data[tz->id] > CRITICAL_TEMP) && (tz->id != 4)) {
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+ int i, broken_sensor = 0, correct_temp = 0;
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+ for (i = 0; i < 4; i++) {
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+ if ((thermal_zone_data[i] <= CRITICAL_TEMP) &&
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+ (correct_temp <= thermal_zone_data[i]))
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+ correct_temp = thermal_zone_data[i];
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+ if (thermal_zone_data[i] > CRITICAL_TEMP)
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+ broken_sensor++;
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+ }
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+ /*
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+ * if all thermal sensor broken then critical temperature data send
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+ * for system poweroff.
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+ */
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+ *temp = (broken_sensor == 4) ? CRITICAL_TEMP : correct_temp;
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+ }
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+
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mutex_unlock(&tz->lock);
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exit:
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return ret;
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--
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2.25.1
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