From: Frans Pop <elendil@xxxxxxxxx>
Users can force a passive trip point for a thermal zone that does not have
_PSV defined in ACPI by setting the passive attribute in sysfs. It's
useful to display such trip points in /proc/acpi/thermal_zone.
.../TZ1/cooling_mode:<setting not supported>
.../TZ1/polling_frequency:polling frequency: 10 seconds
.../TZ1/state:state: ok
.../TZ1/temperature:temperature: 53 C
.../TZ1/trip_points:critical (S5): 110 C
.../TZ1/trip_points:passive (forced): 95 C
And if not set (passive is 0):
.../TZ1/trip_points:passive (forced):<not set>
Signed-off-by: Frans Pop <elendil@xxxxxxxxx>
Acked-by: Zhang Rui <rui.zhang@xxxxxxxxx>
Cc: Matthew Garrett <mjg59@xxxxxxxxxxxxx>
Cc: Len Brown <lenb@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/acpi/thermal.c | 7 +++++++
1 file changed, 7 insertions(+)
diff -puN drivers/acpi/thermal.c~acpi-thermal-display-forced-passive-trip-points-in-proc drivers/acpi/thermal.c
--- a/drivers/acpi/thermal.c~acpi-thermal-display-forced-passive-trip-points-in-proc
+++ a/drivers/acpi/thermal.c
@@ -1052,6 +1052,13 @@ static int acpi_thermal_trip_seq_show(st
acpi_device_bid(device));
}
seq_puts(seq, "\n");
+ } else {
+ seq_printf(seq, "passive (forced):");
+ if (tz->thermal_zone->forced_passive)
+ seq_printf(seq, " %i C\n",
+ tz->thermal_zone->forced_passive / 1000);
+ else
+ seq_printf(seq, "<not set>\n");
}
for (i = 0; i < ACPI_THERMAL_MAX_ACTIVE; i++) {
_
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