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acpi: thermal: display forced passive trip points in proc

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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@planet.nl>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Frans Pop 2009-11-17 14:27:33 -08:00 committed by Len Brown
parent b552a8c56d
commit bf2abdd79a
1 changed files with 7 additions and 0 deletions
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7
drivers/acpi/thermal.c
View file

@ -1052,6 +1052,13 @@ static int acpi_thermal_trip_seq_show(struct seq_file *seq, void *offset)
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++) {