On Thu, 2009-08-27 at 00:17 +0800, Frans Pop wrote:
> Users can force passive cooling 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>
> Cc: Zhang Rui <rui.zhang@xxxxxxxxx>
> Cc: Matthew Garrett <mjg59@xxxxxxxxxxxxx>
>
Acked-by: Zhang Rui <rui.zhang@xxxxxxxxx>
thanks,
rui
> diff --git a/drivers/acpi/thermal.c b/drivers/acpi/thermal.c
> index 564ea14..a4e507b 100644
> --- a/drivers/acpi/thermal.c
> +++ b/drivers/acpi/thermal.c
> @@ -1050,6 +1050,13 @@ 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++) {
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