build/patch/kernel/archive/odroidxu4-5.13/0054-ODROID-XU4-Update-hack-avoiding-the-invalid-temperat.patch

61 lines
1.9 KiB
Diff

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