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thermal: of: fix cooling device weights in device tree

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Currently you can specify the weight of the cooling device in the device
tree but that information is not populated to the
thermal_bind_params where the fair share governor expects it to
be.  The of thermal zone device doesn't have a thermal_bind_params
structure and arguably it's better to pass the weight inside the
thermal_instance as it is specific to the bind of a cooling device to a
thermal zone parameter.

Core thermal code is fixed to populate the weight in the instance from
the thermal_bind_params, so platform code that was passing the weight
inside the thermal_bind_params continue to work seamlessly.

While we are at it, create a default value for the weight parameter for
those thermal zones that currently don't define it and remove the
hardcoded default in of-thermal.

Cc: Zhang Rui <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Len Brown <[email protected]>
Cc: Peter Feuerer <[email protected]>
Cc: Darren Hart <[email protected]>
Cc: Eduardo Valentin <[email protected]>
Cc: Kukjin Kim <[email protected]>
Cc: Durgadoss R <[email protected]>
Signed-off-by: Kapileshwar Singh <[email protected]>
Signed-off-by: Eduardo Valentin <[email protected]>
This commit is contained in:
Kapileshwar Singh 2015-02-18 16:04:21 +00:00 • committed by Eduardo Valentin
commit 6cd9e9f629
11 changed files with 42 additions and 18 deletions
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4
Documentation/thermal/sysfs-api.txt
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@ -95,7 +95,7 @@ temperature) and throttle appropriate devices.
1.3 interface for binding a thermal zone device with a thermal cooling device
1.3.1 int thermal_zone_bind_cooling_device(struct thermal_zone_device *tz,
int trip, struct thermal_cooling_device *cdev,
unsigned long upper, unsigned long lower);
unsigned long upper, unsigned long lower, unsigned int weight);
This interface function bind a thermal cooling device to the certain trip
point of a thermal zone device.
@ -110,6 +110,8 @@ temperature) and throttle appropriate devices.
lower:the Minimum cooling state can be used for this trip point.
THERMAL_NO_LIMIT means no lower limit,
and the cooling device can be in cooling state 0.
weight: the influence of this cooling device in this thermal
zone. See 1.4.1 below for more information.
1.3.2 int thermal_zone_unbind_cooling_device(struct thermal_zone_device *tz,
int trip, struct thermal_cooling_device *cdev);